Application of CPMV for improving the indoor thermal environment under global solar radiation

The impacts of solar radiation on indoor thermal comfort are growing with the popularity of curtain walls in modern constructions. In order to accurately assess indoor thermal comfort under global solar radiation, a previous study proposed a corrected predicted mean vote with global solar radiation (CPMV*) and validated the model in summer. To further investigate the year-round applicability of the model, field experiments were conducted in transparent envelope buildings in winter, and 1098 valid thermal responses were obtained. The results indicate that CPMV* fits well with the thermal sensation vote, and it has important applications in guiding the design of indoor thermal environments and the operation of ventilation and air conditioning systems throughout the year. Besides, the predicted percentage dissatisfied with global solar radiation and the percentage unacceptable are proven to be feasible in evaluating the thermal acceptability of buildings with solar radiation. Based on CPMV*, we can calculate the indoor thermal comfort zone matching various solar radiation intensities and reasonably regulate the actual operation of the heating, ventilation and air conditioning systems. The indoor thermal environment exposed to solar radiation would be significantly improved by these findings.