Wu, X; Tian, Z; Tian, C; Wang, Y and Li, J (2019) New design-day method for building cooling load calculation in China. Building Research & Information, 47(8), pp. 901-911. ISSN 0961-3218
Abstract
Design days are the fundamental parameters for design cooling load calculations. At present, the coincidence and coupling relationship of meteorological elements are ignored by the design-day selection methods provided in the current standards, which results in conservative and unreasonable designs. This research proposes a method of selecting design days for design cooling load calculation that considers the coincidence and correlation of meteorological elements. First, a joint distribution function is constructed; on this basis, the coincident near-extreme meteorological parameters are selected. Then three meteorological elements from a 30-year meteorological record are integrated into one single normalization parameter. Finally, a design day reflective of the variation trend of near-extreme climate conditions is selected from the meteorological record. This paper uses Tianjin in China as an example to generate the research design day. It was found that the outdoor non-guaranteed rate of the research design day is roughly consistent with the corresponding indoor thermal environment risk level. Compared with the standard Chinese design day, the peak values of the research design day are reduced effectively, and the gap between the indoor thermal environment risk level and the outdoor non-guaranteed rate is narrowed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | air conditioning; building envelope; climate loads; coincidence of meteorological parameters; indoor thermal environment; risk level |
| Index terms: | selection method, China, air conditioning, variation, distribution function, research design, coupling, thermal environment, building envelope |
| Subjects: | research design and methodology, architectural elements, tendering, Geography, contractual condition, probability and distributions, systems engineering, environmental engineering |
| Topics: | Engineering Principles, Geographical Context, Research Practice, Sustainability, Procurement, Design Practice, Contract Administration |
| Descriptive scope: | 3 PCA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here