This afternoons lesson was all about solar panals. First of all we was shown how the are made up how they work then how to install. We then had a practical; we set up 8 solar panals and built up the system to collect the DC (direct current) power and turn it into AC (alternating current) this was realy good as we then saw the hole system working with little sunlight and how electric meter box sarted to turn backwards putting power back to the net. This project was very sucessfull and was good to see the rest of the boys working together and enjoying the task WELL DONE
27-09-2012, 09:16
Geschreven door PassiveHouseCvohz
Today our teacher Fons showed us how to use a thermal imiging camera to detect thermal heat losses to a property and also how it can detect air gaps. The thermal imaging camera could also store prevouise photos to use when the building has to be showen to be signed off. In the afternoon we had to erect a solor pannel systems this was my favouirate bit off the course so far. We worked in two groups Ezel, Alastair, Justin constructed all the solor pannels together while Myself and Marcus instailled the meter, the converter and the breaker. We also did all the wiring between the breakers meter and coveter. The conveter conveted current from direct current to alternating current. We then tested it and it worked slowley but surley.
TTFN
27-09-2012, 09:16
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Day 8 Passivehouse
We spent the morning looking at thermal imaging and it's uses within building surveys. We watched a video detailing how to use a thermal imaging camera and when the limitations and benefits of this system. Although the video was of use, it focussed more towards electrical testing and as such I found myself slightly lost at points. I did gain a better understanding of the equipment. Fons then showed us the thermal imaging camera and we got to look at some construction details within the classroom to see any cold spots in the room. This again was beneficial, but I would have found it more useful if we could have carried out a survey to a property to put practical learning to the theory we have studied.
In the afternoon we went to the training centre to look into solar panels in more detail. We were given a presentation by Patrick regarding the system to give us an understanding of how it worked.
After the presentation we then got the opportunity to erect a solar panel system consisting of 9 panels and connecting this to a converter and meter. This was extremely beneficial as this enhanced the information we had studied previously. All in all a very good afternoon.
27-09-2012, 09:15
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passive house
Today fons showed us how to use the thermal imager to check for cold spots and all the other possible uses of the thermal imager, which could be used for a wide range of things. We got to use the thermal imager around the classroom, this gave me a better view on how the imager worked. after this we went to the training center to be showed how to install solar panels, we was talked through a slideshow which explained the angles, outputs etc. we then had to erect the panels and wire up the converter, meter and the breakers, after this we tested the panels to see how much power was being generated. this was not a large amount as it was a very cloudy day with very little sunlight.
M.Hall
27-09-2012, 09:14
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Day 8
Today we spent the morning watching instructional videos regarding the operation of thermal imaging cameras, with a breif opportunity to operate the camera before we broke for lunch. Personally would have preffered the opportunity to carry out a minor survey on a property using the camera to establish the extent of cold bridges etc, as the videos we saw were more focussed on electrics, rather than building fabric/envelopes.
In the afternoon we had the opportunity to build a solar PV array co^mplete with ancillaries and observe the effectiveness of the system first had. I found this session useful and informative.
27-09-2012, 09:09
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26-09-2012
passivehouse day8
We where shown a video to show how a Fluke Thermal Imager works this was interesting to see how it works and how it picks up heat loss or where it conducts. It was also good to see how the software works so you can see the information in detail. Unfortunatly some of the information on the video was not needed as it went further in to the system than we needed.
26-09-2012, 11:43
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passivehouse day6&7
These two days we revisited the passivehouse construction where we were given the tools to insulate the outside walls to help repair the thermal barrier that we where shown last week. This process was done by using different thicknesses of insulation board; the main thickness had to be 8cm but we had to build up extra layers up depending on what the outer wall finnish was to be. Through this process it was good to be on site using tools the only problem was a confusion in the language barrier even the the english was good it was still hard for us to explain our concerns and the way our apprentice's had to work. Having completed the work we was told that the owner was happy with the work we had done and hopefully it will do the job it is being tried out to do.
26-09-2012, 09:17
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Days 6/7
Days six and seven saw us on site for a two day practical stretch; where we fitted insulation to the bases of the external walls to negate the possibility of thermal bridges occuring. Although I didnt learn a great deal theory wise from this pareticular exercise; it did offer a new a different perspective to the one from which I usually see construction projects.
26-09-2012, 09:09
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Passivehouse Days 6 and 7
On the Monday of week 2 we went to the training centre to collect materials and tools as we were going to be carrying out practical work for the next 2 days. We then drove to site which was the passivehouse office building we visited the Monday before. We were told that there had been an incorrect detail specified for the building which meant that a thermal bridge still existed at low level between the wall and internal floor construction.
As a result we would be reducing the ground level to the top of the footing and then installing insulation to this area to eliminate the thermal bridge.
We spent the next 2 days installing the insulation around the building under the supervision of the client.
Although I didn't learn any new theory, it was good to get a bit of practical experience on site, especially for an office boy.
26-09-2012, 09:09
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:
On monday of the secound week we started the practical work to the house were we visited in the first week. We started work to the property because there was a thermal bridge which needed insulating. We insulated the intiour perimiter of the property to created a good and adiquate thermal bridge. We then were asked to insulate the floor inside the property aswell.It was all in all a good experence.
TTFN
26-09-2012, 09:06
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passive house
we started with the practical work at the beginning of week 2, there was a thernal brigde at the property that we visited last tuesday. We had to rectify this problem with the help of fons and the architect that owned the property, to do this we had several different thicknesses of insulation that we had to layer up around the bottom of the property to give us a thickness of 80cm. we cut the peices at the required height and stuck them to the building using a foam glue, we piled sand up against the foam to keep it in place. This will then be checked to see if all thermal leaks have been eliminated from the property to give it thermal tightness.
M.Hall
26-09-2012, 09:05
Geschreven door PassiveHouseCvohz
21-09-2012
passivehouse day5
Today we where shown thermal images that showed us where in the property we lose heat this is done by using a thermal imaging camera. We then moved on to the airtightness and trough different size gaps what is lossed and how it affects the moisture content so it showed how important it is to have full seal. we where also shown how a blow door test works. Moving on we looked at solar panals and how they work. It was good to see how much there fucntioning loses power when not set at the correct angle of around 35 degrees south facing. We here then shown other sustainable energy systems The video produced by copenhagen denmark just showed how far a city is prepared to go to achive its goal by 2015
21-09-2012, 11:02
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day 4
Today we looked at how a wooden house was put together in a day, we then looked at various diffent plans which showed all the different ways that the materials can be used, the thickness and what the materials was. this included the foundations, walls, floors, roof etc. we then looked at the blower door test which is the test they used to make sure the house is air tight and has no air leaks from small cracks etc. finally we looked at the thermal imageing camera, this showed us all the form and cold spots in the house within 10 minutes which is alot quicker and cheaper than any other method.
M.Hall
21-09-2012, 09:07
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Day 4 Today consisted mostly all theory but we looked at the first stages to a ground floor, first floor and roof pitch and flat. We were shown videos
of how different flat roof systems where used. This afternoon we have been
looking at the different kinds of insulation techniques and the different heat
loss ratios are for each different type of insulation. By doing this today it gave us a good understanding of how the previouse buildings we visited were constructed and worked.
TTFN
21-09-2012, 09:06
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On the morning of day three we were taken to a passivehouse still under construction, which used straw bales as its insulated material. The building was in various stages of completion and as such many of the construction details were still visable. The visit was useful as I had never seen straw used for insulation, and once again the importance of air tightness was enmphasised. In the afternoon we witnessed an exisiting domestic builidng having PU foam injected into the cavitiy to improve its energy efficiency. Day four was spent reviezing Passivehouse construction details and lectures on air tightness.
21-09-2012, 09:02
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day 3
today we looked more at the materials used to create the passive house and how these materials are put together to create a envelope of no heat losses. we then visited the training centre where the the trades practice bricklaying, gardening etc. after this we looked at a renovation protect where they was pumping PU foam into the walls to create a low energy property, the tradesmen on the job showed us how it worked by pumping a small amount into a bucket so we could see the reaction, this was very interesting.
M.Hall
21-09-2012, 09:01
Geschreven door PassiveHouseCvohz
Day 3 Wensday today we where shown how the construction details of one of the first passive
buildings was built . It showed us in detail how the
building was constructed around 4 concrete pillars. Todays vist was to a passive house built using strawbales this
was very intresting as it showed us how thick the walls had to create a good solid insulation. We then visited a property having a cavity wall system filled
with poly foam this was good to see as it showed us how to set up, drill,
inject, seal and finnish off to complete the job in one day. The system also
showed us the problems if there are any faults in either wall (gaps and cracks
etc). We also visted a site that had been built by britsh students
unfortunatly we couldnt get acess to the building.
21-09-2012, 08:58
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Day 3 and 4
On the morning of day 3 we went to visit a house under construction using straw bales for the external walls. Although not the most efficient method of insulating a property, it showed that a passivehouse can be constructed using various types of insulation material, all by changing the profile of the walls. In the afternoon we visited a property which was having PU installed retospectively to the cavity walls. We were given a demonstration of how the foam changes from a liquid state to a solid and showed how this was installed.
Thursday consisted mostly of theory relating to insulation types, construction details, and touched a little on airtightness. Again we were shown examples of good methods of practice and were able to relate this to the buildings we had previously visited.
All in all very informative
21-09-2012, 08:57
Geschreven door PassiveHouseCvohz
20-09-2012
passivehouse day4
back to classroom today looking at the details of footings to first phase of ground floor, firstfloor and roof details pitch and flat. We were shown videos of how different flat roof systems where used. Our teacher fons has been working realy hard to transulate for us he is doing very well . This afternoon we have been looking at the different kinds of insulation techniques and the different heat loss ratios are for each one. Over all the only problems today was the coomputer was a bit slow
20-09-2012, 13:37
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passivehouse day3
Today we where shown the construction details of one of the first passive buildings built that we visted yesterday. It showed us in detail how the building was constructed around 4 concrete pillars, how it needed extra beams added to it etc. Todays vist was to a passive house built using strawbales this was very intresting as it showed us how thick the walls had to be it was also good to be able to ask questions to the owner( he was also the builder) about the benifits of using straw and how he overcame problems and the reasons why he would not use straw again (this is only because of the time scale not price or poor u-value). We then visited a property having a cavity wall system filled with poly foam this was good to see as it showed us how to set up, drill, inject, seal and finnish off to complete the job in one day. The system also showed us the problems if there are any faults in either wall (gaps and cracks etc) what happens. We also visted a site that had been built by britsh students unfortunatly we could not gain access to see the internal finnishing.
20-09-2012, 09:23
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