基于光、气和余热回收的复合热水系统研究

Research on Hybrid Hot Water System Based on the Light, Gas and Waste Heat Recovery

为降低高校公共浴室热水系统不可再生能源的消耗,以淮南市某高校浴室为研究对象,基于多能联动和余热回收的理念,设计了太阳能+天然气+废水余热热管回收的复合热水系统,加载了两种能源和余热回收的自动控制系统,同时利用能源替代对比的方法对复合热水系统进行节能减排分析。结果表明与使用电锅炉、燃气锅炉、燃油锅炉和燃煤锅炉相比,复合热水系统年运行费节约率分别为76.8%、51.1%、74.2%和7.6%;按折合标煤计算,复合热水系统每年可减少排放CO573t、SO7158kg、NO1445kg。该复合热水系统具有良好的经济和环保性能,为太阳能和余热回收在建筑中的热利用提供了绿色思路。

In order to reduce the consumption of non-renewable energy in the hot water system of the college bathrooms,the hybrid hot water system of solar energy+natural gas+heat recovery of waste water pipes was designed based on the concept of multi-energy linkage and waste heat recovery,in which the automatic control system of two kinds of energy and waste heat recovery was loaded.With the method of energy substitution and comparison used to analyze the energy saving and emission reduction of the hybrid hot water system,the research obtained the results showing that the annual operating cost saving rate of the hybrid hot water system was 76.8%,51.1%,74.2%and 7.6%respectively compared with the electric boiler,gas-fired boiler,oil-fired boiler and coal-fired boiler.According to the calculation of converted standard coal,the hybrid hot water system can reduce the emission of 573 t CO,7158 kg SOand 1445 kg NOper year,displaying a good economic and environmental performance and providing a green idea for solar energy and waste heat recovery in building heat utilization.