Arsenal on top of English Premier League

first_img GREAT WEEK LONDON (AP): As title-chasing Arsenal completed back-to-back wins with ease, it took other Premier League games to provide a double-dose of late drama. Newcastle were facing ending another weekend in the relegation zone until Ayoze Perez stunned Tottenham in the third minute of stoppage time to win 2-1 at White Hart Lane. Liverpool, which lost last weekend to Newcastle, left it even later at home to West Bromwich Albion, with Divock Origi recovering a 2-2 draw in the sixth minute of stoppage time. The optimism which surrounded Juergen Klopp’s arrival as Liverpool manager two months ago has been substituted with a realism. Liverpool are five points adrift of Manchester United, which held on to fourth place despite losing at Bournemouth on Saturday, and nine behind provisional leaders Arsenal. Olivier Giroud converted an early penalty for his 50th Premier League goal, before Mesut Ozil set up Aaron Ramsey to sweep in another as Arsenal beat bottom-place Aston Villa 2-0. It was goalkeeper Petr Cech’s 169th clean sheet in the Premier League – most achieved with Chelsea – matching David James’ record. Although Arsenal’s stay at the top could be brief if Leicester beat ailing champions Chelsea, the win at Villa Park capped a good week when the odds were defied to book a place in the round of 16 in the Champions League. “I was a bit anxious today because we had given a lot on Wednesday night (at Olympiakos) and we came back very, very late,” Arsenal manager Arsene Wenger said. “I knew that Villa was fighting to survive … it was a controlled performance and a great week for us. Don’t worry. I had as well a few bad weeks already. So sometimes it balances a little bit.” It’s been a good four months for north London counterpart Mauricio Pochettino at Spurs. They had not lost in the League since the opening day of the season until running into a resilient Newcastle, which ended the 14-match unbeaten run. Perez beat Tottenham goalkeeper Hugo Lloris at his near post as the full-time whistle loomed, after fellow substitute Aleksandar Mitrovic had cancelled out Eric Dier’s first-half headed opener for Tottenham. “In the second half, every time we had the ball we started to make some mistakes and we give them the possibility to a right to a goal,” Pochettino said. “I think the first person that was responsible of the defeat is me.” With Newcastle out of the drop zone and up to 15th – above Chelsea – the pressure is off Steve McClaren for now. HARD WORK AND COMMITMENT “You’re only two days away from another crisis, so it’s important we keep our feet on the ground,” McClaren said. “We’ve not turned the corner … we want to be (like) this every week and that only comes on a platform of hard work, attitude and commitment and discipline.” A week after a miserable trip to McClaren’s Newcastle, Liverpool were facing a second successive loss. Although Jordan Henderson put Liverpool ahead at Anfield, Craig Dawson quickly scored an equaliser in the first half for West Brom and Jonas Olsson put the visitors ahead in the 73rd. But Henderson set up Origi to score from outside the area just when the Midlands club seemed set to take all three points. “Maybe the crowd was disappointed, but they didn’t let us feel it,” Klopp said. “We were all in the game, we were all concentrated to get this one point at the end and it felt like three. I know it’s only one, but it felt like three and in this moment there was an explosion (of emotion).”last_img read more

Nimba Education Office Trains Colleagues

first_imgThe Nimba County office of the Ministry of Education (MOE) has embarked on the training of fellow educators to prepare them to join the fight against the deadly Ebola virus disease (EVD).A branch of the Liberia News Agency (LINA) in the county reported that Nimba Chief Education officer (CEO), Wleh T. Sailah, commenced training his colleagues, including district education officers (DEOs) and principals of schools from both private and public sectors from the 12 school districts about the danger of the disease and how to prevent it from attacking them and their students.Though schools remained closed, CEO Sailah said the daylong training, which was held last Friday in Sanniquellie, the county capital, was intended to empower the participants, who upon completion of the training would conduct awareness on the danger of the EVD in their respective school districts.He said his office had decided to decentralize the training by getting closer to DEOs and principals, who did not have the opportunity to attend the first session in Sanniquellie over the weekend.He said, the training series is being sponsored by the United Nations Children’s Fund (UNICEF), in collaboration with the Ministry of Health and Social Welfare.Meanwhile, participants who completed the first day of the training have embarked on “house-to-house” campaign, creating more awareness about the existence of the EVD as well as telling residents to avoid their deep-rooted denial factor.Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)last_img read more


first_imgCOUNTING is underway this morning at five centres across County Donegal in the local government election.Thirty-seven county councillors will be elected over the next 18 hours or so.County council staff and others are in Letterkenny, Stranorlar, Donegal Town, Glenties and Buncrana sorting through ballot papers from the five electoral areas. There will be an extra eight councillors this time around, to make up for the sad loss of our local town councils under government reform.Fianna Fail has done well across the county. Fine Gael has taken a hammering at the polls, whilst Sinn Fein has had mixed results, doing well in the north and east of the county but not as well as expected in the south.The story of today however is likely to be that of independents with a number of high profile candidates set to be elected to Lifford. COUNTING UNDERWAY AT 5 DONEGAL ELECTION CENTRES was last modified: May 25th, 2014 by John2Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)Click to print (Opens in new window) Tags:Donegal County CouncilElectionslast_img read more

Worrying signs as Cranes fire blanks against Proline FC

first_imgThe Cranes have scored only one goal in three build-up matches. (PHOTOS/FUFA)Build-up gameUganda Cranes 0-0 Proline FCStarTimes Stadium, LugogoWednesday, 24-07-2019LUGOGO – Eight goals scored in four matches and Uganda reached the 2019 CHAN championships in Morocco.An average of two goals per game was as good as the team got in front of goal as they negotiated through the qualifying stage, eliminating both South Sudan and Rwanda.With just three days to the first qualifier against Somalia in the 2021 edition, Abdallah Mubiru’s side is clearly struggling in front of goal.On Wednesday morning they were held to a goalless draw by newly promoted StarTimes Uganda Premier league side Proline FC.It is supposed to be a concern for the team but Mubiru thinks otherwise.“I am not worried about the lack of goals. We are still training and have a lot of time to improve in front of goal. The good thing is that we are creating chance and now we just have to put them away. Said Mubiru after the game.Mubiru may claim not to be worried but if a team scores a single goal in three build-up games, one would clearly be right to think otherwise.In the past week, the Cranes defeated URA FC 1-0 before losing by the same score line to Kitara in the Regional tour.In the two games prior to Wednesday, they struggled to create goal scoring chances and the few they did curb out were wasted by the forwards.Towards the end of the victory over, Nelson Ssenkatuka was played through on goal by Bright Anukani but the Bright Stars striker pulled the effort wide while one on one with the keeper. The moment was received with astonishment as the on-lookers looked on in disappointment.Their best chance against Proline came in the 90th minutes with substitute Muzamir Mutyaba finding space in behind the Proline back-line before forcing a top-notch save from custodian Shatif Magoola.As the Cranes tried to force the issue, Allan Okello unsurprisingly headed a Mustapha Kizza cross wide of the target. Okello is not known for his heading ability and him missing from a header can not be treated as a huge issue.Earlier in the first half, Kaddu squandered up to three chances one of which saw him pounce onto a tame Magoola pass before shooting straight at the custodian.In an effort to win the game, Mubiru sent on Muzamir Mutyaba and Shafick Kagimu to replace Allan Kayiwa and Tom Matsiko at the start of the second half but the move did not pay off.With 15 minutes to play, nine more changes were made but to no desired effect.Uganda will take on Somalia in Djibouti on Saturday in their first leg of the 2021 CHAN first round qualifiers.The Cranes will take on Somalia on Saturday.The team is expected to depart the country on Thursday morning.Uganda Cranes starting teamCharles Lukwago (GK), Paul Willa, Mustapha Kizza, Timothy Awanyi (c), John Revita, Tadeo Lwanga, Tom Matsiko, Allan Okello, Allan Kayiwa, Allan Kyambadde, Patrick Kaddu.The Cranes team that is currently in campGoalkeepersLukwago Charles (KCCA FC), Alitho James (URA FC), Mugabi Yasin (Wakiso Giants Fc)DefendersWilla Paul (Police FC), Mustafa Mujuzi (Proline FC), Kizza Mustafa (KCCA FC), Revita John (Express FC), Awany Timothy (KCCA FC), Mbowa Paul (URA FC), Galiwango Dissan (Express FC), Mandela Ashraf (URA FC)MidfieldersTaddeo Lwanga (Vipers SC), Mutyaba Muzamir (KCCA FC), Masiko Tom (Vipers SC), Kagimu Shafiq (URA FC), Kayiwa Allan (Vipers SC), Okello Allan (KCCA FC), Kyambadde Allan (KCCA FC), Sadam Juma (KCCA FC), Ssozi Yusuf ( Paidha Black Angels), Bright Anukani (Proline FC)StrikersKaddu Patrick (KCCA FC), Sserunkuma Daniel (Vipers SC), Senkatuka Nelson (Bright Stars FC)The technical team of the Uganda CranesHead coach – Abdallah MubiruAssistant coach – Livingstone MbabaziGoalkeeping coach – Sadiq WassaTeam Coordinator – Geoffrey MassaComments Tags: abdallah mubiruCHAN 2021proline fctopUganda Craneslast_img read more

Pardew hails Cisse after stunning Newcastle victory

first_imgNewcastle boss Alan Pardew hailed Papiss Cisse after the forward’s incredible late strike against Chelsea.Cisse’s first goal in the Magpies’ 2-0 win at Stamford Bridge was stunning, but his second was even better.And Pardew told Sky: “I actually thought we were going to win 1-0 with our 15th clean sheet of the season, but the goal was special.“It sums him up. He feels he is just going to score whenever he is near the goal.”More reaction to follow later.Click here for our Chelsea v Newcastle quizFollow West London Sport on TwitterFind us on Facebooklast_img read more

‘Lazy’ DeGale determined to sharpen up

first_imgJames DeGale insisted he would learn from his tough fight against durable Frenchman Hadillah Mohoumadi.The Harlesden man successfully defended his European super-middleweight title, securing a unanimous points decision at Glow, Bluewater.He showed his talent by landing with a variety of shots throughout, but Mohoumadi seemed immovable and managed to drag the champion into a battle.DeGale looked at his best when in the centre of the ring, landing blows almost at will, but he spent much of the fight propped against the ropes, counter-punching as his opponent plodded forward.He admitted doing so partly because of a tendency to get lazy, but also because of the intensity of the fight – only his second this year.“Oh my word he was tough. I knew he was game and durable but didn’t know he was that tough. He’s a fit, strong boy,” DeGale told Channel 5.“That’s why you’ve got to train hard and I’m so pleased I put the work in so I could produce a performance like that.“Sometimes I get lazy and I know that. I stay on the ropes and don’t bend at the knees. I know I need to work on stuff like that in the gym.“I showed I can dig deep and take shots, but I don’t need to take those shots.“I had to have rounds off in there because he was so tough. He just kept on coming. I’m glad I did all them Hampstead Heath runs and all those rounds of sparring.”Having recently resolved a long-running dispute with Frank Warren, the fight was DeGale’s first under new promoter Mick Hennessy.And the former Olympic champion, 26, is determined to make up for lost time following a frustrating 12 months.“My plans have been knocked back a year because of all the rubbish outside the ring, but it’s a new start and the future’s bright,” he declared.“It was a good, learning 12 rounds. There aren’t many super-middleweights out there that are faster than me or that have my movement.”See also:DeGale wins to retain European titleFollow West London Sport on TwitterFind us on Facebooklast_img read more

JSE outperforms most markets in 2011

first_img6 January 2012 Comparing year-end values, South Africa’s stock exchange showed little movement overall in 2011, but held firm – and in doing so was one of the better performers in a turbulent year for equities worldwide, Moneyweb reports. The JSE’s benchmark Top 40 index gave a marginally negative return of 0.59% in 2011, while at close of play on 30 December 2011 its All Share index was down by 0.41% compared to 30.12.2010.Global markets hammered But, as Moneyweb’s David Carte pointed out, these losses pale against the -52.9% suffered by investors on the Athens stock exchange, or the -18.3% of the Eurostox 50. “You thought that Germany had come through Europe’s crisis relatively unscathed? Well, Germany’s DAX was down by 15.6%,” Carte wrote. “But who is not surprised that the Hang Seng in Hong Kong gave a negative return of 19.8%? And that the Nikkei in tsunami-rocked Japan gave investors a negative 17.3% return.” The FTSE 100 index of UK companies fell 5.6% over the 12-month period, “while in the US, the Standard & Poors 500 gave investors a positive return, albeit a measly one of 0.41%.”Local winners, losers Investors in certain sectors of the JSE were fairly well rewarded in 2011 – among them, oil and gas producers were up 11%, food producers up 13%, and industrials up 6%. Conversely, it was a bad year for the JSE’s construction stocks (down 26%), and for platinum (-28%) and mining in general (-11%), despite a strong showing from coal (+22%). According to Business Day, the JSE attracted 16 listings with a combined market capitalisation of more than R35-billion in the course of 2011, while about 15 companies delisted.New CEO looks to grow products, services Nicky Newton-King, who this week became the first woman CEO of the JSE, told Business Day that the exchange would be looking to offer more access to African companies in 2012, as well as products such as exchange-traded funds that opened access to new investments. With South Africa’s rules of inward listing having been relaxed, “we would also like to attract more inward listings”, Newton-King said. In October, the National Treasury announced that local investors would be able to trade in foreign-domiciled companies listed on the JSE, boosting the status of South Africa’s bourse as a springboard for foreign companies to expand into Africa. Previously, the JSE could not include foreign companies in the exchange’s indices, as local investors weren’t able to buy shares in these companies without restriction. SAinfo reporterlast_img read more

DEMO 2011: It’s All About Social

first_imgWhy Tech Companies Need Simpler Terms of Servic… 8 Best WordPress Hosting Solutions on the Market Top Reasons to Go With Managed WordPress Hosting mike melanson Related Posts center_img DEMO, the conference where companies get six minutes on stage to present their product, kicked off this morning with VentureBeat’s Matt Marshall talking social. “It’s all about social,” said Marshall, explaining that social media companies like Facebook have grown at an unprecedented pace. It took half a century for IBM to hit $1 billion, whereas it only took Facebook a handful of years, he said.With that in mind, let’s take a look at three companies that presented this morning at DEMO and hope to latch on to the ever-expanding social web.AboutOneAboutOne describes itself as a “location to manage memories and household information.” In short, it looks almost like a Facebook for the familial unit, but with much more utility in mind. It serves as a place to not only store family-related documents (like instructions for the babysitter) but also information like car insurance and other useful documents. The site connects with other services via API, so that you don’t even need to enter all of this information manually. Key in your car’s VIN number and AboutOne can automatically import the model, make, year and everything else into the system. The service also serves as an online location to store all sorts of other family-related documents, such as pictures and scans of your children’s artwork. From this data, users can create newsletters for friends and family and even create online baby books, which they can then order hard copies of.PhotoRocketPhotoRocket jumps in the try to handle a key space in the social web – photo sharing. Facebook’s photo sharing feature is one of its most popular, but photo sharing doesn’t end there, with a plethora of other popular services. Where does PhotoRocket come in? It attempts to help users “share photos instantly in one step” to multiple destinations from a variety of platforms. Of course, this isn’t the first time we’ve seen an app attempt this, but it’s all in the execution. Just last week, we saw Chute display a similar product, but PhotoRocket tries to edge out competition with an important feature – integration.PhotoRocket is available on Windows, Mac and iOS (What? No Android?) and shares content to Facebook, Twitter and a host of other sites. According to the company, it steps beyond competition by integrating directly into the operating system and letting users right-click on files, use a browser button or an app to share. Social EyesSocial Eyes, an ambitious app that lists among its competition some big hitters like Skype, is a “social video service that instantly connects you to your friends and groups of people who share your interests.” So how does this differ from Skype? Social Eyes is a video and text chatting service that is centered on your existing social graph. You sign in using your Facebook login and it automatically populates your list of contacts according to your Facebook friends that have also signed up. Social Eyes also does something Skype doesn’t do – it organizes other users around interests, so you can join groups like “Current Events” or create your own group based on your interests. Beyond that, you can also record and send video messages to other users, so not everything has to be live. What keeps Social Eyes potentially a bit more above board than other live video chat services like Tiny Chat or Chat Roulette is its authenticated identity by way of Facebook Connect. Using Facebook Connect leads to greater accountability, and wearing of pants, than purely anonymous systems. Tags:#conferences#DEMO 2011#web A Web Developer’s New Best Friend is the AI Wai…last_img read more

Flatrock Passive: A Winter Update

first_imgEditor’s Note: This is one of a series of blogs by David Goodyear describing the construction of his new home in Flatrock, Newfoundland, the first in the province built to the Passive House standard. You’ll find his complete blog here. In a previous post I talked a little about food security. I tried to focus some of the landscape in our yard on producing food — and it was a huge success! We had a steady supply of baby root vegetables and greens until the end of September. The garden was quite a bit of work but it was amazingly enjoyable to watch it flourish and be able to pick vegetables throughout the summer. I battled nature and learned a lot from my planting mistakes. I will put those lessons to work next year as I add new crops. Getting ready for the fall harvest was no easy task. I had never owned a cellar before now, nor had I harvested or stored vegetables. A lot of effort went into researching the old methods of root cellaring vegetables to keep them fresh for a long time. Storage for most root vegetables is basically about creating underground conditions to keep the vegetable “alive.”RELATED ARTICLESDucting HRVs and ERVsMisconceptions About HRVs and ERVsBreathe Easy With Balanced VentilationHow to Provide Makeup Air for a Wood StoveAn Introduction to Pressure Diagnostics A low, constant temperature (less than 5°C, or 41°F) with high humidity (95% plus) is necessary and can be achieved by adjusting dampers to regulate air flow through the ventilation stacks inside the cellar. Luckily, my father and my father in-law have been around a few cellars. They grew up in a time when every family had a garden. It was a necessity. They provided me with much of the knowledge needed to create good storage conditions. Storage is pretty easy for potatoes. A large bin with slatted sides promotes air movement around the potatoes. I made some bins from leftover flooring, and they also proved useful for storing carrots, beets, and parsnips. The vegetable garden was well worth the effort, providing produce through the summer and root crops that could be wintered over. My fall harvest provided our family with a great bounty. Some of the root vegetables were ready for harvest through the summer so we picked away while the garden continued to grow. Nature provided us with turnip greens, lettuce, beet greens, and a variety of small vegetables, including carrots, rutabagas, potatoes, beets and onions. By October the potato plants had completely died back and I let their skins “harden off” in the ground to toughen them for storage. By mid-October we pulled the potato plants. We left them to dry for a day, and moved them directly to the cellar. We ended up with about 300 pounds. The cellar at this point was cool (less than 10°C [50°F]) but humidity was low. A perfect combination to promote drying for a couple of weeks to further harden-off the skins before closing up the door for winter. I left most the vegetables (carrots, parsnips, cabbage, beets) in the ground until the beginning of November while I waited for the root cellar to cool. Gently pulling them (on a cold day) to ensure minimal damage, cutting off the greens and leaving the dirt on them is all you really need to do for preparation. They were then stacked inside of a burlap lined crate with sawdust between each of the layers. I paid careful attention to keep the roots from touching each other as that can promote rot in storage. One month later, the carrots had little green sprouts growing out the top, a good sign that the vegetables are still alive and kicking! A root cellar will keep root vegetables fresh over the winter with a combination of low temperatures and high humidity. Although the snow-covered garden is a beautiful sight, looking out at an empty garden does lead to some heavy feelings. This being said, I get to enjoy the fruits of our labor (or should I say vegetables) for the whole winter and will start again in the spring. Creating food security does take work. Some of the work is easy. Some of the work is hard. The end game is all pure enjoyment! Going to your personal grocery store on a cold winter day to pick roots for a warm winter stew is priceless. Next year I plan on adding more perishable varieties of vegetables that lend themselves well to canning. Now that the days are short and the nights are long, I guess I’ll have plenty of time to research what comes next. Airtightness and indoor air quality It was a fairly cold fall this year with a noticeable drop in temperature around mid-September. At the same time, it was somewhat humid, as would be expected for our climate. Humidity inside the house was high. After a purge with open windows on a dry day, humidity would drop dramatically in a very short period of time. After closing the windows humidity would continue to climb over several days until we would have to purge again. Although the temperature inside the house was comfortable, the high humidity sometimes made it feel stuffy. Running a dehumidifier wasn’t much of an option because dehumidifiers just add sensible heat to the living space. Our heat-pump water heater helped a little, but our hot water usage was just too low for it to be effective. I really should have listened to my Passive House designer from the beginning and installed a minisplit. Lesson learned! From what I recall, his primary concern wasn’t actually humidity. Instead, he expected the interior temperature to be an issue during the summer months, although the house has performed fine in that respect. In any case, we opted to install a minisplit in order to address dehumidification. The minisplit, a Fujitsu 9RLS3H, made a huge difference up until the end of September and was able to keep the humidity around 50% while running in dry mode. As the exterior temperature dropped, I expected the interior humidity to fall as well, albeit more slowly than it would have with an HRV. It was much slower than expected (the opposite was true during the summer). It would take days to drop a couple of percentage points. Depending on the moisture load in the house, on some days relative humidity would increase, reach a new equilibrium humidity, then start falling again. I was concerned that as the temperature decreased, I would see a significant amount of condensation on the windows and doors. In response, we ran a dehumidifier continuously. Construction contributes to high humidity Many new airtight homes see high humidity levels. Where does all the moisture come from? Construction materials are filled with moisture. Drying those materials takes a long time. A concrete slab could take years to dry. However, the house had been closed in for almost a year so I suspected that most of that construction moisture would have dissipated. Given that we could purge the house of humidity quickly (it could drop 10-15 percentage points in 10-15 minutes just by opening the windows), I suspected there was some sort of ventilation issue. I wondered whether it was the ERV, the airtightness of the house, or construction moisture. Was the current moisture load too high for ventilation to eliminate? I think the answer is a combination of things. Most houses are leaky (3-5 ach50). Even the ones that people call energy-efficient (less than 2 ach50) are still leaky when compared to the airtightness of this house — 0.36 ach50. At this leakage rate, the natural air infiltration is about 2% of the volume of the thermal boundary. At 3 ach50 the natural infiltration is about 20%. If 20% of the air in a house (under average weather conditions) is being exchanged from outside to inside I would think that the effect it has on interior humidity must be astoundingly greater than infiltration in an airtight house. It is well known that gaining energy efficiency through airtightness can lead to indoor air quality issues if ventilation is not addressed properly. I started investigating every aspect of the ventilation system, from materials to installation methods and balancing. Then I started thinking, and here’s where it got complicated. Tracking down the source of the problem I lit our Walltherm stove when we moved in back in April. Smoke started leaking from the flue pipe joints. The joints are typically not sealed since the natural draft of the chimney should prevent smoke from entering the living space. When I opened the windows, the smoke infiltration stopped. The next day, I decided to do some testing. I placed my hands around the stove pipe joints and I could feel cold air leaking through them. My first intuition was that the ERV was unbalanced, leading to depressurization of the house. I checked the airflow balance (using a digital differential manometer) according to the manufacturer’s test method and found that it was fine. After some additional experimenting, it became evident that the house was under negative pressure even though the ERV was balanced. I increased the amount of fresh air supply to the building until the manometer read slightly positive. I tested this setup by burning a match near the stove pipe and the smoke was immediately sucked into the stove pipe joints. I had to unbalance the machine by almost 30 cubic feet per minute in order to achieve this. I left the ERV in this unbalanced state so I could use the wood stove. I decided at the time that I would revisit the issue in the fall when I had more time. The depressurization and smoke issue seemed quite complicated and a solution eluded me for many months. I figured it was related to the ducting of the ERV, so when fall rolled around I started an investigation. My initial thoughts were that the depressurization was caused somehow by the duct configuration on the supply and return, so I switched them just to test the hypothesis. The good news was that the ERV basically remained balanced, meaning that the supply and return duct runs had nearly equivalent lengths. I rebalanced the unit and once again could feel cold air leaking from the stove pipe joints. I decided to change the ducting at the outside hoods. I switched them and made a few other configuration changes and rebalanced the machine — with much disappointment. After rebalancing, the cold air kept seeping out the joints of the stove pipe. Each test led to the same result and further despair! Creating neutral pressure inside the house Then I thought that if the results are always the same it obviously has nothing to do with the unit. Instead, there must be some underlying fundamental physics going on. Then it came to me: Even a tight house is still a “leaky” plenum. Both fans in the ERV operate independently. Fresh air is being fed into the house by the supply. The exhaust has no way of differentiating where air is being drawn from. It simply pulls air from the space. It will pull some air from the fresh air sources but air will naturally start infiltrating through holes in the envelope since they offer a path of least resistance — unless they are plugged. Plugging the holes can be done artificially by unbalancing the ERV so that the difference inside and outside the envelope is neutral. There are obviously more holes in the envelope then just the stove pipe so when pressurizing by using supply air, you have no control over which holes the supply air exits through. As a result, a large amount of air (in my case 30 cfm) could potentially be needed to effectively “plug” the holes and create neutral pressure. I am guessing that with airtightness at 3-5 ach50, most homes are so leaky that there is little to no depressurization. I can almost bet that anybody in a Passive House who has balanced their ventilator would see depressurization if a manometer was used to measure the difference between interior and exterior pressure. I am yet to find anybody willing to test this. If you do, please let me know! This effect is simply not unique to Flatrock! Physics is the same everywhere. It seemed like a good idea to just continue operating the ERV in an unbalanced state to deal with the stove issue. What could possibly go wrong? The problem is that a solution to one problem can often lead to problems elsewhere. Needless to say, unbalancing the ERV had unexpected consequences. After a lot of research I determined that operating in an unbalanced state (supply greater than exhaust) will collect more of the moisture from the exhaust air stream than when it is operating in a balanced state. When it is dry outside, interior humidity will drop much slower in this unbalanced state. In the summer, this unbalanced state will lower the moisture removing capacity of the unit and the interior humidity will climb much quicker than if the machine were balanced. The assumption during planning is that our ventilation would take care of exhausting some humidity during the winter but leave enough to be comfortable. The assumption is fine as long as the machine is balanced. The wood stove provides welcome heat, but also created an indoor air quality issue that took some time to sort out. My solution for the wood stove was based on a lack of understanding about the mechanism of moisture migration from one air stream to another in the ERV core. I balanced the ERV airflows and interior humidity would drop dramatically quicker than in the unbalanced state. So operating in an unbalanced state fixes the stove issue but leads to humidity problems! This also explained why humidity climbed so quickly during the summer when it was humid outside. So another solution had to be investigated. Another solution emerges I had read that wood-burning appliances in tight homes can be problematic… and they can be! Good quality assurance is absolutely necessary. This being said, I feel like this ongoing depressurization issue is beyond the understanding and scope of most ventilation installers. I do think that other people who are building super-airtight houses should measure to see if the house is depressurized even though the airflows are equalized. Equality of the supply and exhaust exchange rates does not imply that the house pressure is neutral and therefore could lead to dangerous backdrafting, flooding the living space with carbon monoxide. I read some time ago that the Zehnder brand of ventilators have a function that helps prevent depressurization. I believe it’s called “ChimneySweep.” When activated, it unbalances the unit in order to provide 10% more makeup air, and therefore pressurizes the house to prevent back-drafting of smoke into the living space. My experience was that 10% would not be enough, and in fact I required almost a 30 cubic feet per minute differential between the supply and exhaust (on a ventilation rate of 95 cfm) in order to balance to neutral pressure. By December I had concocted a strategy that would work. I decided that a normally open motorized damper on the supply duct would do the job. I balanced the ERV unit (with the damper open) to pressurize the house, checking pressure between the inside and outside using a differential manometer. Then I adjusted the damper’s closed position so that the supply and exhaust were equal. Flipping the switch opens a damper and allows the ERV to pressurize the house, eliminating a back-draft of wood smoke into the house. When I want to use the wood stove I would just flip a switch on the wall by the ERV control to force the damper to open, which would pressurize the house. It worked like a charm. If the damper motor fails, the spring-loaded damper opens and the wood stove can still be used. I feel this is a much safer solution and has redundancy built in. Unfortunately, it is another mechanical part that adds complication, but the safety factor makes it worth the complication. The added benefit of pressurizing the house is that when I add wood to the fire there are now no issues with smoke spilling into the living space. The stove now works like a charm! Energy use So how about energy use? I am pleased. I currently heat about 3,376 square feet of interior living space, including both the house and the garage. In December 2018, we depended purely on electricity since I wasn’t ready to use the stove until I fixed the ventilation issue. The temperature in the house and the garage (woodworking shop) are both set to 20°C (68°F). We used a total of 1,576 kWh of electricity. I have found that the heat loads of the house and garage are definitely lower than the lowest heat output of the Fujitsu heat pumps. How do I know this? Simple: The heat pumps short cycle. This can be easily confirmed by measuring the amperage at the breaker panel and tracking how long the machine is drawing power. At 0°C, the heat load for the garage is below the lowest modulated heat output for the Fujitsu unit (3100 Btu per hour). I calculated the load to be somewhere around 2800 Btu/hour, including air infiltration and heat loss through the envelope. The heat pump short cycles every 10 minutes or so. Unfortunately, this does affect efficiency. How much I have no idea, but operating in a steady state would be more desirable. The heat pump in the house has short cycled less. It is the same size as the model in the garage and there is more heat loss due to a larger envelope, so that makes sense. As the nights get even colder I have witnessed longer run times and less short cycling, which is great for efficiency. I think that the usage could have been less if the heat pumps short cycled less. I am still investigating what is going on but it appears to be a common thing with heat pumps operating under low-load conditions in airtight houses. So far, our bills have been about 38% of that used in our previous home which used electricity and propane. BLOGS BY DAVID GOODYEAR A Garden and a Sun Shade Air Sealing the Penetrations Blower Door Test Comes Up Roses Wrapping Up the Air Barrier Firing Up the Heating System Laying Out the Mechanical System Framing and Insulating an Interior Service Wall Insulation and an Air Barrier Installing Windows and Doors Foam Sheathing and Window Details Framing and Air Sealing A Well Insulated Slab Footings and Frost Walls A Final Design and Energy Modeling An Introduction to the Flatrock Passive Houselast_img read more

What You Need to Know About the Pocket Cinema Camera

first_imgThe Blackmagic Pocket Cinema Camera makes it easier to capture great images on-the-go. Check out the features that make it stand out.With it’s RAW capabilities and sleek design the Blackmagic Pocket Cinema Camera has quickly become the go-to camera for filmmakers who are looking for a small, high quality camera at an affordable price. The BMPCC is the little-brother to the Blackmagic Cinema Camera and the Blackmagic 4K Cinema Camera but it still packs quite a punch for being a fraction of the price. Here are a few things you need to know about it:It shoots in RAWUnlike comparable DSLR cameras, the Blackmagic Pocket Cinema Camera natively shoots in a RAW lossless format. This is huge for color correcting. As a filmmaker, you don’t have to worry about details getting lost in compression.13 Stops of Dynamic RangeHow good is 13 stops of dynamic range? Well, a Canon Mark III shoots with only 10 stops of dynamic range and the “cream-of-the-crop” Arri Alexa gets 13.5. We’re not saying that a Blackmagic Pocket Cinema Camera will get you Arri quality video, but as far as dynamic range goes it can get you pretty close.A 3.5 Inch DisplayA larger display means it’s much easier to monitor what you are recording. On the display you can also review clips straight from your SD card which is nice for on-set playback. The BMPCC also allows you to zoom in to get a better view of what you are recording.A Micro Four Thirds MountThis is an interesting advantage to DSLR lenses in that Micro Four Thirds lenses tend to be much smaller and more compact than DSLR lenses. As it stands right now, Micro Four Third lenses tend to be cheaper than comparable DSLR lenses too. There are also a lot of adapters for Micro Four Thirds mounts that can help your BMPCC take almost any lens avaliable.We’re Giving One Away for FreePremiumbeat, in partnership with, is giving away a free Blackmagic Pocket Cinema Camera along with an awesome gear pack for a limited time. To find out more information about the giveaway go over to the contest page and enter. Each user can enter once a day and you get bonus entries if your friends sign up.Do you use a BMPCC on your productions? What do you think of it so far? Let us know in the comments below.last_img read more