【摘要】 针对辐射供冷存在有结露风险、供冷能力偏低等问题,提出住宅分户式辐射空调系统用多功能新风机,并对其结构参数和运行情况展开研究分析。通过EVAP-COND软件研究换热器的不同流路布置、流程数、管排数、管径、每排管数对换热效果和除湿效果的影响,提出新风机的较优结构为顺逆交叉流均匀布置、管径5mm、流程数为6。并分析其运行性能,发现该新风机可以满足全年98%的除湿需求。同时针对辐射末端+新风复合系统在重庆地区除湿降温需求期间的运行情况展开研究,发现该复合系统可以缩短响应时间,同时避免结露风险,为辐射空调系统推广应用提供支撑与参考。更多还原

【Abstract】 Aiming at the problems of condensation and low cooling capacity in radiation cooling systems, a new household fresh air ventilator for radiation cooling systems was proposed, and its structural parameters and operation performance were studied and analyzed. Through EVAP-COND, the influence of flow path arrangement, flow number, pipe row number, pipe diameter and pipe number of each row on heat transfer and dehumidification effect of heat exchanger was studied. The better structure of the fresh air ventilator is the uniform arrangement of the forward and reverse cross flow, the pipe diameter of 5 mm, and the flow number of 6. Besides, its operation performance was analyzed and showed that the fresh air ventilator can meet 98% of the annual dehumidification requirements. In addition, the response time and condensation situation of the radiation terminal + fresh air composite system during the period of dehumidification and cooling demand in Chongqing were studied, and indicated that the composite system can reduce response time while avoiding the risk of condensation, which provides support for the promotion and application of radiation systems.更多还原