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Sustainability 2018, 10(6), 1821;

An Occupant-Oriented Calculation Method of Building Interior Cooling Load Design

School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, MOE, Tianjin University, Tianjin 300072, China
Author to whom correspondence should be addressed.
Received: 2 May 2018 / Revised: 25 May 2018 / Accepted: 29 May 2018 / Published: 31 May 2018
(This article belongs to the Collection Sustainable Built Environment)
PDF [9767 KB, uploaded 31 May 2018]


Given continued improvement in the thermal performance of building envelopes, interior disturbances caused by occupant behavior now have the greatest impact on building loads and energy consumption. The accurate calculation of interior load during design stage was emphasized in this paper, and a new method was proposed. Indoor occupants were considered as the core of interior disturbances, and the relationship with other interior disturbances was explored. The interior heat release was arbitrarily combined with the representative cooling load to be utilized in building cooling load calculation. Field surveys were conducted in three typical university buildings: an office building, a teaching building, and a library, located in a university in Tianjin, China. The oversized chillers supplying cooling for the buildings resulted from the over-estimating of the indoor occupant number and the power density of electric appliances. Through quantitative analysis, it was observed that the maximum representative interior loads were 196.43, 329.94, and 402.58 W/person, respectively, for the case buildings, at least 50% less than the empirical design data. Compared to the measured cooling load during the testing period, the accuracy of the modified cooling load was greater than 90%. This research is intended to serve as a reference for calculating and optimizing the design loads of cooling systems. View Full-Text
Keywords: load disturbances; representative interior load; consistency check; university buildings load disturbances; representative interior load; consistency check; university buildings

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Wang, Z.; Ding, Y.; Deng, H.; Yang, F.; Zhu, N. An Occupant-Oriented Calculation Method of Building Interior Cooling Load Design. Sustainability 2018, 10, 1821.

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