basics:passive_houses_in_different_climates:introduction

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basics:passive_houses_in_different_climates:introduction [2016/06/15 12:00]
francis.bosenick@passiv.de
basics:passive_houses_in_different_climates:introduction [2019/02/28 09:33] (current)
cblagojevic
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   * there is a specific building tradition in every country and    * there is a specific building tradition in every country and 
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   * there are specific climatic boundary conditions in every region.   * there are specific climatic boundary conditions in every region.
  
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   * You should keep comfort at a high level. Passive Houses should be well known as the most comfortable houses - in any country and within any climate. Be aware that all persons would like to live in a comfortable indoor climate and that all of them should have a right to do so. Therefore, in the long run, no solution will persist which will not contribute to a better indoor climate. ​   * You should keep comfort at a high level. Passive Houses should be well known as the most comfortable houses - in any country and within any climate. Be aware that all persons would like to live in a comfortable indoor climate and that all of them should have a right to do so. Therefore, in the long run, no solution will persist which will not contribute to a better indoor climate. ​
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   * The solution should be simpler than ordinary buildings/​systems used so far. Only affordable solutions will be attractive in a competition with conventional technology like standard air conditioning.   * The solution should be simpler than ordinary buildings/​systems used so far. Only affordable solutions will be attractive in a competition with conventional technology like standard air conditioning.
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   * It is not necessary that the solution will not need any conventional energy demand ('zero energy solution'​) - that might be very expensive. It is sufficient to use a lot less energy than in ordinary systems. At a factor of 4 to 10, the energy conservation is likely to be high enough to pay for the extra efforts needed.   * It is not necessary that the solution will not need any conventional energy demand ('zero energy solution'​) - that might be very expensive. It is sufficient to use a lot less energy than in ordinary systems. At a factor of 4 to 10, the energy conservation is likely to be high enough to pay for the extra efforts needed.
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   * Insulation might be a good idea in all climates.   * Insulation might be a good idea in all climates.
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   * Shading will be absolutely necessary in all climates with high solar radiation during Summer.   * Shading will be absolutely necessary in all climates with high solar radiation during Summer.
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   * Heat recovery will be necessary in all cold and in all hot climates. If the houses have a ventilation system, which will be a good idea if external temperature will be lower than 8 °C or higher than 32 °C in a relevant time period, the supply air ducts may well be used to transport heat during the heating season, cool air during the hot periods and dry air to dehumidify if necessary.   * Heat recovery will be necessary in all cold and in all hot climates. If the houses have a ventilation system, which will be a good idea if external temperature will be lower than 8 °C or higher than 32 °C in a relevant time period, the supply air ducts may well be used to transport heat during the heating season, cool air during the hot periods and dry air to dehumidify if necessary.
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   * Using very low amounts of auxiliary energy is an important precondition for passive solutions. The fans in ventilation systems, for example, must use highly efficient electronically commutated motors. This  is obvious in the case of recovery of cooling energy, but it is necessary in systems for heat recovery, too. On the other hand - don't hesitate to use a ventilator; moving air requires much less energy than heating or cooling it significantly.   * Using very low amounts of auxiliary energy is an important precondition for passive solutions. The fans in ventilation systems, for example, must use highly efficient electronically commutated motors. This  is obvious in the case of recovery of cooling energy, but it is necessary in systems for heat recovery, too. On the other hand - don't hesitate to use a ventilator; moving air requires much less energy than heating or cooling it significantly.
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   * In many cases the ground can be used as a heat or cold buffer. Vernacular architecture in a country may indicate whether ground coupled systems are an opportunity. The traditional solution may be very expensive, however - like huge air channels or earth buried houses; that will not be a solution reproducible for the future. But there are less expensive solutions using modern technology like earth buried ducts or ground probes.   * In many cases the ground can be used as a heat or cold buffer. Vernacular architecture in a country may indicate whether ground coupled systems are an opportunity. The traditional solution may be very expensive, however - like huge air channels or earth buried houses; that will not be a solution reproducible for the future. But there are less expensive solutions using modern technology like earth buried ducts or ground probes.
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basics/passive_houses_in_different_climates/introduction.txt · Last modified: 2019/02/28 09:33 by cblagojevic