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  2. Ecohouse - Wikipedia

    en.wikipedia.org/wiki/Ecohouse

    Living in the house also generates heat. Active human beings can produce as much heat as a one bar electric fire. Add to this heat from cooking, washing, lights etc. and you can begin to see how an eco-house could get too hot. Conventionally opening the windows reduces heat, but an eco-house design could include heat recovery ventilation ...

  3. Sustainable architecture - Wikipedia

    en.wikipedia.org/wiki/Sustainable_architecture

    Energy Star ground-source heat pumps can be 40% to 60% more efficient than their air-source counterparts. They are also quieter and can also be applied to other functions like domestic hot water heating. [23] In terms of initial cost, the ground-source heat pump system costs about twice as much as a standard air-source heat pump to be installed.

  4. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

  5. Building insulation - Wikipedia

    en.wikipedia.org/wiki/Building_insulation

    Eco-friendly insulation is a term used for insulating products with limited environmental impact. The commonly accepted approach to determine whether or not an insulation product, or in fact any product or service is eco-friendly is by doing a life-cycle assessment (LCA). A number of studies compared the environmental impact of insulation ...

  6. Window insulation - Wikipedia

    en.wikipedia.org/wiki/Window_insulation

    Window insulation reduces heat transfer from one side of a window to the other. The U-value is used to refer to the amount of heat that can pass through a window, called thermal transmittance, with a lower score being better. [1] The U-factor of a window can often be found on the rating label of the window.

  7. Passive house - Wikipedia

    en.wikipedia.org/wiki/Passive_house

    A maximum air temperature of 50 °C (122 °F) is applied, to prevent any possible smell of scorching from dust that escapes the filters in the system. Beyond the recovery of heat by the heat recovery ventilation unit, a well-designed passive house in the European climate should not need any supplemental heat source if the heating load is kept ...

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