摘要
This paper is based on the rainwater collection project in the retrofit of the Dongyi teaching block in Zhejiang University Xixi Campus.The analysis incorporates the local meteorological data, recycling water utilization, and precipitation adjustment.The rainwater collection system in this program also adds the condensation water from the heating, ventilation and air conditioning （ HVAC） system and the concentration from the reverse-osmosis system used for watering greens and supplying waterscapes.By calculating, the quantity of the HVAC condensation water in summer is 3.48 m3/d, and the quantity of the reverse-osmosis concentrated water is 198 to 396 L/d.This method solves the water shortage caused by high evaporation in summer and low precipitation in winter.Supported by empirical monitoring data, the proposed method significantly increases the economic efficiency of the system during the summer period.
通过浙江大学西溪校区东一教学楼改造的雨水收集工程实践，分析了本地的气象资料、回用水使用与降水时段调节等，将房间空调器凝结水与饮用水反渗透浓水予以收集归入整个雨水收集系统，用于教学楼周围的绿化浇灌与景观水的补水．通过计算，教学楼夏季空调器凝结水量约为3．48 m3/d，每日饮用水反渗透浓水的水量可达到198～396 L ．在气温较高的夏季能有效地补充因大量蒸发导致绿化浇灌及景观补水不足的缺陷，同时在降雨量较少的冬季也能一定程度上进行添补．雨水与冷凝水以及反渗透浓水一同收集大大提高了整个收集系统的经济性．项目实测数据验证了系统的经济合理性．
