公共建筑太阳能热水系统运行效益考察及分析

以大型公共建筑示范项目为研究对象,通过测评、计算得出调查对象太阳能热水系统的年节约费用、静态投资回收期、环保效益和全年太阳能保证率.结果表明:太阳能热水系统的使用率在所有项目中比率最高,应用广泛,使用份额大;调查对象的年平均节约费用为21.91万元,平均静态投资回收期为3.47 a,经济效益良好,且太阳能保证率平均值接近50%,符合国标要求.相对于使用化石燃料生产热水,太阳能可大幅减少对环境的污染,环保效益显著.

Effectiveness Analysis of Solar Water Heating Systems for Public Buildings

Taking the ten large public building demonstration projects as the studying object, static payback time, environmental protection benefits and the annual assurance rate of the solar water heating system were discussed through evaluation and calculation. The result shows that among all the items, the usage rate of the solar water heating system is the highest with wide application and big share. The annual cost savings of the projects is 219 100 Yuan, the average static payback time is 3.47 years, indicating good economic benefit. The average solar assurance rate is close to 50%, in accordance with the national standards. Compared with heating water using fossil fuels, the solar energy application can sharply reduce the environment pollution, also can benefit greatly the environmental protection.