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  2. Cooling load temperature difference calculation method

    en.wikipedia.org/wiki/Cooling_load_temperature...

    5.1 For heat gain through walls, doors, roofs, and windows (only window conduction) 5.2 For heat gains due to people, equipment (hooded and unhooded), and lighting 5.3 For solar heat gains through windows and glazed surfaces

  3. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Furnaces are mostly used as a major component of a central heating system. Furnaces are permanently installed to provide heat to an interior space through intermediary fluid movement, which may be air, steam, or hot water. Heating appliances that use steam or hot water as the fluid are normally referred to as a residential steam boilers or ...

  4. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building. The heat can be transferred by convection, conduction, or radiation. Space heaters are used to heat single rooms and only consist of a single unit.

  5. Construction estimating software - Wikipedia

    en.wikipedia.org/wiki/Construction_estimating...

    Construction cost estimating software is computer software designed for contractors to estimate construction costs for a specific project. A cost estimator will typically use estimating software to estimate their bid price for a project, which will ultimately become part of a resulting construction contract. Some architects, engineers ...

  6. Gas holder - Wikipedia

    en.wikipedia.org/wiki/Gas_holder

    30,000 m 3 (1,100,000 cu ft) blast furnace gas holder at Rautaruukki Steel in Finland. A gas holder or gasholder, also known as a gasometer, is a large container in which natural gas or town gas (coal gas or formerly also water gas) is stored near atmospheric pressure at ambient temperatures.

  7. Air changes per hour - Wikipedia

    en.wikipedia.org/wiki/Air_changes_per_hour

    The most common technique to measure airtightness is the fan pressurization method, also known as the blower door test. It is measured by the number of air changes per hour (ACH) that occur when there is a differential pressure of 50 pascals between outside and inside the building.

  8. Uniform Residential Appraisal Report - Wikipedia

    en.wikipedia.org/wiki/Uniform_Residential...

    A Uniform Residential Appraisal Report or URAR is one of the most common forms used in United States real estate appraisals.It was created to allow for standard reporting and analysis of single-family dwellings or single-family dwellings with an "accessory unit".

  9. Furnace - Wikipedia

    en.wikipedia.org/wiki/Furnace

    Furnace (central heating): a furnace, or a heater or boiler, used to generate heat for buildings; Boiler, used to heat water; also called a furnace in American English when used for heating and hot water in a building; Jetstream furnace or Tempest boiler, a design of wood-fired water heater