Abstract
Interactive cascade ventilation (ICV) as a recently proposed mechanical ventilation shows energy-saving in local coefficient of cooling capacity utilization compared with stratum ventilation and mixing ventilation. The indoor environment built by ICV can better meet the various thermal comfort needs of human body different parts. To quantitatively investigate the thermal comfort performance of interactive cascade ventilation, related experiments based on body multi-node thermal demand were conducted in this study. Stratum ventilation and mixing ventilation were selected as the comparisons. The mean skin temperature, thermal neutral indoor temperature, thermal sensation vote, and thermal comfort vote were introduced as the evaluation indicators. The research results showed that the thermal neutral indoor temperature of ICV can be enhanced by 0.5 °C and 0.8 °C compared with SV and MV, respectively, leading to a reduction of 97.5 kWh and 156.0 kWh on the year-round space cooling load. The mean skin temperature served by ICV can also be increased by 0.1–0.4 °C and 0.2–0.7 °C under thermoneutral conditions. Meanwhile, the local thermal comfort and overall thermal comfort can be improved by 1.2 %-17.7 % and 9.8 %-14.3 % related to SV and MV, respectively. It indicates that ICV can significantly improve human thermal comfort at higher room temperatures by considering body multi-node thermal demand.
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