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The Home Energy Saver is built on DOE-2, a computer program for building heating and cooling energy analysis and design. [3] DOE-2 performs a thermal load simulation that accounts for heating and cooling equipment and thermal distribution efficiencies, infiltration, and thermostat management. [4]
United States Heating Degree Day map, 1961–1990 United States Cooling Degree Day map, 1961–1990. Heating degree day (HDD) is a measurement designed to quantify the demand for energy needed to heat a building.
The first of the cooling load factors used in this method is the CLTD, or the Cooling Load Temperature Difference. This factor is used to represent the temperature difference between indoor and outdoor air with the inclusion of the heating effects of solar radiation. [1] [5] The second factor is the CLF, or the cooling load factor.
HERS can produce a list of recommended improvements based on some life cycle's effective cost analysis. These recommendations may be pertaining to any of the inefficient components of a building i.e. insulation layer in the composite wall of building, air conditioning equipment, water heating unit, double-glazed windows, etc.
Weekly or monthly degree-day figures may also be used within an energy monitoring and targeting scheme to monitor the heating and cooling costs of climate controlled buildings, while annual figures can be used for estimating future costs. A degree day is computed as the integral of a function of time that generally varies with temperature. The ...
The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [ 1 ] [ 2 ] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.
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