太阳能-空气源热泵的直接采暖系统  

Direct heating system with solar-energy air-source heat pump

作　　者：杜海存[1] 马立[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2015年第2期155-158,共4页Journal of Nanchang University(Engineering & Technology)

摘　　要：为了提高太阳能集热器运行稳定性及空气源热泵适应冬季低温环境的能力,构造一种太阳能-空气源热泵串联连接的直接采暖系统。实验测试冬季工况下,热泵压缩机的供热特性和实验房间的温度变化。结果表明:系统经过180 min的预热时间,地板表面温度达到26.2℃,室内环境温度达到22.1℃;稳定供热过程中,室内温度波动范围为0.2℃,完全满足室内冬季供暖需求;系统停机3 h,地板温度下降3.1℃,室内环境温度下降1.2℃,仍能满足人体热舒适性需求,验证了该供暖系统运行的可行性及稳定性。In view of the instability of solar heat collector and poor performance of air source heat pump at low temperature in winter,a direct heating system was designed to connect solar heat collector with air source heat pump in series. The experimental study tested heating characteristics of heat pump compressor and change of the room temperature. The study results showed that after 180 minutes of preheating in this system,the floor surface temperature reaches to 26. 2 ℃,and the room temperature rises to 22. 1 ℃. In the heating process,the room temperature varies by 0. 2℃,fully meeting the demands of heating in winter. After the heating system stops working for 3 hours,the floor temperature drops by 3. 1 ℃,and room temperature drops by 1. 2 ℃,fully meeting the need of human body on thermal comfort. Therefore,the study has verified the feasibility and stability of the heating system.

关 键 词：太阳能-空气源热泵 直接采暖系统 太阳能集热器 热源效率 

分 类 号：TK5[动力工程及工程热物理—热能工程]