Abstract
Heating degree-days are often used as a climatic measure in building energy calculations. To account for the effects of solar and internal gains, degree-days at a base temperature, lower than the heating set point temperatures are used, or the number of degree days is adjusted downward by a degree-day correction factor. In this paper, we present a theoretical derivation, which demonstrates thatASHRAE Cd factors are not the appropriate correction d factors for the calculation of energy savings from envelope conservation measures. The results of this derivation can be used to develop new correction factors appropriate for savings calculations.
Original language | American English |
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Number of pages | 11 |
State | Published - 1985 |
NREL Publication Number
- NREL/TP-253-2435
Keywords
- building energy calculations
- degree-days
- envelope conservation measures