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Energianalys av CTEN byggsystem

Eneroth, Carl (2010)
Civil Engineering - Architecture (BSc)
Abstract
Abstract Analysis of CTENTM building system Approximately 40 % of the total energy consumption in Sweden is being consumed in the building market. The introduction of passive houses to the market have created circumstances for a reduction of nearly half the energy consumption compared with today’s energy regulations. The idea of how to do this is well known but has never gained any foothold until about a decade ago. An initiative from Kristianstads municipality to arrange an competition during Bodagarna09 regarding an area set out for building passive houses gave Kreativahus Arkitekter a reason to rethink their building system CTENTM and how they could adapt it to meet the passive house standards. This report shows the benefits of CTENTM... (More)
Abstract Analysis of CTENTM building system Approximately 40 % of the total energy consumption in Sweden is being consumed in the building market. The introduction of passive houses to the market have created circumstances for a reduction of nearly half the energy consumption compared with today’s energy regulations. The idea of how to do this is well known but has never gained any foothold until about a decade ago. An initiative from Kristianstads municipality to arrange an competition during Bodagarna09 regarding an area set out for building passive houses gave Kreativahus Arkitekter a reason to rethink their building system CTENTM and how they could adapt it to meet the passive house standards. This report shows the benefits of CTENTM building system has when building houses that meets the Swedish standards. This building system will be compared with a traditionally built brick wall house here called Referenshuset. When building a passive house there appear questions such as moisture, air tightness and others concerning the solutions of the detailed construction design. The passive house and Referenshuset are put in relation to each other to try to find benefits and the setbacks of both building systems. The analysis of the energy calculations for Alba 130, which is built with CTENTM, shows how it meets the passive house standards. While it would be a difficult case to solve with a decent thickness of the mono brick wall which Referenshuset is built with. Referenshuset doesn’t show any problems with the governmental demands on energy standards according to BBR. A couple of changes where made in building system of Alba 130 to reduce for example thermal bridges and a couple of other more general adjustments to secure the air tightness of the climate shell. These adjustments turned out give positive results in the calculations of energy demand and nominal heat output. None of the studied building systems shows any obviously signs of being less better than the other, but CTENTM shows a much more secure system because of the resistance of moisture and the easiness of reducing the thermal bridges. These, which in a house with this low energy consumption, would stand out much more and therefore more important to solve. The system that has already been used in several so called “low energy houses” was easy to adjust for passive house standards and lower its thermal capacity. The building system also gives a great benefit with the possibility to glue windows, without frames, directly onto the outside of the climate shell. The most negative reaction CTENTM has is its anonymity within the industry of contractors and therefore is some contractors hesitant to the system.
Keywords: CTEN, Passive house, nominal heat output, energy demand, thermal bridge (Less)
Please use this url to cite or link to this publication:
author
Eneroth, Carl
organization
year
type
M2 - Bachelor Degree
subject
keywords
cten, passivhus, effektbehov, energibehov, köldbrygga
language
Swedish
id
1611218
date added to LUP
2010-06-02 00:00:00
date last changed
2018-10-18 10:10:37
@misc{1611218,
  abstract     = {Abstract Analysis of CTENTM building system Approximately 40 % of the total energy consumption in Sweden is being consumed in the building market. The introduction of passive houses to the market have created circumstances for a reduction of nearly half the energy consumption compared with today’s energy regulations. The idea of how to do this is well known but has never gained any foothold until about a decade ago. An initiative from Kristianstads municipality to arrange an competition during Bodagarna09 regarding an area set out for building passive houses gave Kreativahus Arkitekter a reason to rethink their building system CTENTM and how they could adapt it to meet the passive house standards. This report shows the benefits of CTENTM building system has when building houses that meets the Swedish standards. This building system will be compared with a traditionally built brick wall house here called Referenshuset. When building a passive house there appear questions such as moisture, air tightness and others concerning the solutions of the detailed construction design. The passive house and Referenshuset are put in relation to each other to try to find benefits and the setbacks of both building systems. The analysis of the energy calculations for Alba 130, which is built with CTENTM, shows how it meets the passive house standards. While it would be a difficult case to solve with a decent thickness of the mono brick wall which Referenshuset is built with. Referenshuset doesn’t show any problems with the governmental demands on energy standards according to BBR. A couple of changes where made in building system of Alba 130 to reduce for example thermal bridges and a couple of other more general adjustments to secure the air tightness of the climate shell. These adjustments turned out give positive results in the calculations of energy demand and nominal heat output. None of the studied building systems shows any obviously signs of being less better than the other, but CTENTM shows a much more secure system because of the resistance of moisture and the easiness of reducing the thermal bridges. These, which in a house with this low energy consumption, would stand out much more and therefore more important to solve. The system that has already been used in several so called “low energy houses” was easy to adjust for passive house standards and lower its thermal capacity. The building system also gives a great benefit with the possibility to glue windows, without frames, directly onto the outside of the climate shell. The most negative reaction CTENTM has is its anonymity within the industry of contractors and therefore is some contractors hesitant to the system.
Keywords: CTEN, Passive house, nominal heat output, energy demand, thermal bridge},
  author       = {Eneroth, Carl},
  keyword      = {cten,passivhus,effektbehov,energibehov,köldbrygga},
  language     = {swe},
  note         = {Student Paper},
  title        = {Energianalys av CTEN byggsystem},
  year         = {2010},
}