太阳能燃气热泵供暖系统余热回收性能研究  

Study on the Heat-recovering Performance of Solar-gas Heating System

作　　者：郝红[1] 于国鑫 姚俊彬 冯国会[1] 李媛[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2016年第4期684-692,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十二五科技支撑计划项目(2011BAJ05B02)

摘　　要：目的研究太阳能燃气热泵供暖系统中余热回收，分析发动机和缸套冷却器以及排烟余热回收器的匹配性．方法以沈阳某小区一单体住宅建筑为研究对象，通过基准建筑的负荷对太阳能燃气热泵供暖系统的各部件进行选型设计，并建立燃气发动机、缸套冷却器及排烟余热回收器等主要部件的模型．结果发动机转速每增加100r／min时，相应的冷却水流量增加0．285—1．21g／s，供暖循环水温度提高2—5℃，温度提高后为47—50℃；以额定功率为基础，排烟废热回收率为O．7时，可获得最大的能源利用；保证额定功率不变时，需控制排烟换热器的阻力小于190．27kPa；发动机转速每增加100r／min，余热回收器的面积需增加0．173m2．结论合理地回收燃气机的余热，既能回收可观的热量，又能保证发动机的高效率，而且也提高了能源利用效率．This paper was proposed to investigate the heat-recovering performance of solar-gas heating system in a residential building in Shenyang to study the compatibility between the engine, cylinder cooler and waste heat saver. According to the components design on basic construction load of the solar-gas heat pump heating system, a set of model was established and the results showed that the cooling water flow rate increased by 0. 285 - 1.21 g/s when the engine velocity accelerated every 100 r/min, therefore, increase the circulation heating water temperature by 2 - 5 ℃, and the circulating water temperature increased to 47 -50℃ ;The optimal energy utilization was obtained when the waste heat recovery was 0. 7 based on the rated power. To maintain a con- stant rated power, the resistance of the exhaust heat exchanger was controlled less than 190. 27 kPa;With engine speed raised every 100 r.min-1 ,the waste heat recovery unit area addedO. 173 m2. It can be concluded that recovering the waste heat of gas-engine in a proper way will guarantee the high efficiency of the engine, and improve the energy utilization.

关 键 词：太阳能 燃气热泵 余热回收 部件匹配 

分 类 号：TU832.1[建筑科学—供热、供燃气、通风及空调工程]