Advanced

Utvärdering av ett LSS-boende byggt som passivhus

Nilsson, Henrik and Christensson, Filip (2014)
Programmes in Helesingborg
Abstract
An LSS resident has been built, a resident with users that suffers from mental disabilities, a passive house by Karnfastigheter. In this project the technology of the passive house concept has been applied on a new area. An evaluation of the passive house Prisman 7 will show if the building works as projected. The energy values are taken from the building when it is in operational condition. The collected values are then compared to the expected values by the client and the demands from the FEBY passive house criteria and the result will show if the building satisfies the demands. A previous experience from passive houses shows that the behaviour of the user has a deep impact on the energy demand of the building. A great challenge is to... (More)
An LSS resident has been built, a resident with users that suffers from mental disabilities, a passive house by Karnfastigheter. In this project the technology of the passive house concept has been applied on a new area. An evaluation of the passive house Prisman 7 will show if the building works as projected. The energy values are taken from the building when it is in operational condition. The collected values are then compared to the expected values by the client and the demands from the FEBY passive house criteria and the result will show if the building satisfies the demands. A previous experience from passive houses shows that the behaviour of the user has a deep impact on the energy demand of the building. A great challenge is to produce buildings with a low energy demand and an acceptable indoor climate. The most important factor when building a house is the satisfaction of the user. Before the passive house technology can be applied to all new LSS residents the main problems must be found and fixed. The opinion of the user is very important to know if the technology works. The client of Prisman 7 is Karnfastigheter, located in Helsingborg in the south of Sweden. An LSS resident means that the users suffer from mental disabilities. They may have higher comfort demands which affect energy usage. Behaviour is the key for success in the passive house concept because you as a user must always be aware not to use too much energy. The energy values from Prisman 7 show that the total energy usage is higher than the expected values from the client Karnfastigheter and the FEBY passive house criteria. Interviews with the staff gave a picture that the user’s behaviour changes from time to time and can’t be affected. Domestic hot water usage of the residents is high compared to an average person’s consumption in Sweden. Even the building’s heating was high and a confirmation from the staff indicates that they vent a lot with open windows and this may affect the building’s heating. To get a good indoor temperature, we believe that information on how and when to vent should be provided and that the solar shading should be reviewed. Comparisons between the energy usage from Prisman 7 and Cirrusmolnet, an LSS resident built as a low-energy builiding by Karnfastigheter, shows that behaviour is vital for sucess. Cirrusmolnet consumes less energy than Prisman 7, even though Prisman 7 has a solar gaining system to minimize the bought energy. It should be the other way around because a passivehouse should consume less energy than a low-energy building. Economically in the operating phase Cirrusmolnet is cheaper than Prisman 7, the idea of passive house is that you pay more in the beginning and have a lower operating cost later, which is not achieved in this case. The indoor temperature values and relative humidity were gathered for the summer and the winter. The result shows that the temperature were too high in the summer and too low in the winter, compared to the expected values by the client. Around 36 % of the temperature values were above 23 °C and around 15 % were under 21°C, this phenomenon is common among passive houses. Normal values for the indoor relative humidity during the winter are 10 – 30 % and during the summer 45 – 65 %, in Prisman 7 this was achieved. In one of the apartments the relative humidity was too high because the shower was used frequently and for a long time. This resulted in a total renovation of the bathroom. The moisture contribution in Prisman 7´s other rooms during the winter was 1.8 g/m3 which is good. The passive house concept main idea is that it should work for all users. The climate shelter and the ventilation system are the most essential working components for the technology to skip the heating system. It didn’t work well in this project. The conclusion is that the wrong applications of the technology for an LSS resident were used and that the client’s expected values were too optimistic along with windows opened a lot. To minimize the ventilation with windows Karnfastigheter should look over the solar shading. One thing that can be noted is that since the behavior of the residents and staff is important for energy usage maybe LSS residents should have other requirements different from those that exist for passive houses in FEBY today. Karnfastigheter did not achieve FEBY's requirements but reached down to their internal requirement of 30 % lower than BBR, which is good. (Less)
Please use this url to cite or link to this publication:
author
Nilsson, Henrik and Christensson, Filip
organization
year
type
M2 - Bachelor Degree
subject
keywords
energi, passivhus, lss-boende, feby, ftx, tappvarmvatten, verksamhetsel, uppvärmning, inomhusklimat, brukare
language
Swedish
id
4468775
date added to LUP
2014-06-18 03:44:05
date last changed
2018-10-18 10:29:06
@misc{4468775,
  abstract     = {An LSS resident has been built, a resident with users that suffers from mental disabilities, a passive house by Karnfastigheter. In this project the technology of the passive house concept has been applied on a new area. An evaluation of the passive house Prisman 7 will show if the building works as projected. The energy values are taken from the building when it is in operational condition. The collected values are then compared to the expected values by the client and the demands from the FEBY passive house criteria and the result will show if the building satisfies the demands. A previous experience from passive houses shows that the behaviour of the user has a deep impact on the energy demand of the building. A great challenge is to produce buildings with a low energy demand and an acceptable indoor climate. The most important factor when building a house is the satisfaction of the user. Before the passive house technology can be applied to all new LSS residents the main problems must be found and fixed. The opinion of the user is very important to know if the technology works. The client of Prisman 7 is Karnfastigheter, located in Helsingborg in the south of Sweden. An LSS resident means that the users suffer from mental disabilities. They may have higher comfort demands which affect energy usage. Behaviour is the key for success in the passive house concept because you as a user must always be aware not to use too much energy. The energy values from Prisman 7 show that the total energy usage is higher than the expected values from the client Karnfastigheter and the FEBY passive house criteria. Interviews with the staff gave a picture that the user’s behaviour changes from time to time and can’t be affected. Domestic hot water usage of the residents is high compared to an average person’s consumption in Sweden. Even the building’s heating was high and a confirmation from the staff indicates that they vent a lot with open windows and this may affect the building’s heating. To get a good indoor temperature, we believe that information on how and when to vent should be provided and that the solar shading should be reviewed. Comparisons between the energy usage from Prisman 7 and Cirrusmolnet, an LSS resident built as a low-energy builiding by Karnfastigheter, shows that behaviour is vital for sucess. Cirrusmolnet consumes less energy than Prisman 7, even though Prisman 7 has a solar gaining system to minimize the bought energy. It should be the other way around because a passivehouse should consume less energy than a low-energy building. Economically in the operating phase Cirrusmolnet is cheaper than Prisman 7, the idea of passive house is that you pay more in the beginning and have a lower operating cost later, which is not achieved in this case. The indoor temperature values and relative humidity were gathered for the summer and the winter. The result shows that the temperature were too high in the summer and too low in the winter, compared to the expected values by the client. Around 36 % of the temperature values were above 23 °C and around 15 % were under 21°C, this phenomenon is common among passive houses. Normal values for the indoor relative humidity during the winter are 10 – 30 % and during the summer 45 – 65 %, in Prisman 7 this was achieved. In one of the apartments the relative humidity was too high because the shower was used frequently and for a long time. This resulted in a total renovation of the bathroom. The moisture contribution in Prisman 7´s other rooms during the winter was 1.8 g/m3 which is good. The passive house concept main idea is that it should work for all users. The climate shelter and the ventilation system are the most essential working components for the technology to skip the heating system. It didn’t work well in this project. The conclusion is that the wrong applications of the technology for an LSS resident were used and that the client’s expected values were too optimistic along with windows opened a lot. To minimize the ventilation with windows Karnfastigheter should look over the solar shading. One thing that can be noted is that since the behavior of the residents and staff is important for energy usage maybe LSS residents should have other requirements different from those that exist for passive houses in FEBY today. Karnfastigheter did not achieve FEBY's requirements but reached down to their internal requirement of 30 % lower than BBR, which is good.},
  author       = {Nilsson, Henrik and Christensson, Filip},
  keyword      = {energi,passivhus,lss-boende,feby,ftx,tappvarmvatten,verksamhetsel,uppvärmning,inomhusklimat,brukare},
  language     = {swe},
  note         = {Student Paper},
  title        = {Utvärdering av ett LSS-boende byggt som passivhus},
  year         = {2014},
}