Development of solar cooling load factors for fenestration in Thailand

Abstract

This article describes the development of solar cooling load factors (SCL) for calculating cooling load from the fenestration part of the building envelopes in Thailand using Bangkok weather data. The Bangkok weather data are selected from 12 years of data collected by the meteorological department. Two sets of weather data are chosen based on dry bulb temperature of 0.4% annual cumulative frequency of occurrence and based on dry bulb temperature of 0.4% hourly cumulative frequency of occurrence and solar radiation obtained from the ASHRAE mathematical model. The building parameters that have effects on the room thermal response are studied. 288 different room types were checked. The values of amplitude and delay based on solar weighting factors are analyzed. Then, rooms with similar thermal response are grouped together and represented by a single point for the group. Each group is defined as a single zone type. Four different zone types are established. For each set of weather data, the values of solar cooling load factors for each zone type are developed.

Key words:

• solar cooling load
• fenestration
• building
• Thailand

Notes

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