학술논문
As-operated heat loss coefficients of residential buildings in the Pacific Northwest: An analysis of empirical space-heating energy data
Document Type
Conference
Author
Source
Conference: Thermal performance of the exterior envelopes of buildings,Clearwater, FL (United States),7-10 Dec 1992; Other Information: PBD: [1992]
Subject
Language
English
Abstract
Previous research of residential electrical space-heating data has revealed that the heat loss coefficients obtained from empirical data (``as-operated`` UAs) are, on average, about 25% below the UA calculated from the shell construction of each building. This as-operated UA is obtained from a linear regression of the measured space-heating energy consumption versus the inside-outside temperature difference. This finding indicates that simple steady-state calculation techniques for heating energy consumption utilizing only UAs may be inaccurate in estimating annual consumption. The purpose of this research was to study how climate, construction, and occupant variables may affect the as-operated UA and, therefore, the annual heating energy consumption. Specifically, the goal is to gain a greater understanding of how and why the as-operated UA differs from the construction-based nameplate UA. Multiple seasons of daily heating data from 131 occupied single-family residential sues were analyzed. A multiple linear regression was used to generate a model that utilizes the construction-based UAs and other characteristics of individual residences to predict an as-operated UA that better estimates annual heating energy.