热能储存
热泵
蓄热式加热器
热虹吸
环境科学
可再生能源
火用
可用能
可再生能源
相变材料
热交换器
采暖系统
太阳能
核工程
混合热
光电-热混合太阳能集热器
废物管理
工艺工程
热力学
工程类
机械工程
热的
电气工程
物理
作者
Chuanhui Zhu,Shubin Yan,Xiaodong Dong,Wei Zhang,Biyi Huang,Yang Cui
出处
期刊:Materials
[MDPI AG]
日期:2021-09-24
卷期号:14 (19): 5552-5552
被引量:3
摘要
With the rapid development of industrialization, the excessive use of fossil fuels has caused problems such as increased greenhouse gas emissions and energy shortages. The development and use of renewable energy has attracted increased attention. In recent years, solar heat pump heating technology that uses clean solar energy combined with high-efficiency heat pump units is the development direction of clean heating in winter in northern regions. However, the use of solar energy is intermittent and unstable. The low-valley electricity policy is a night-time electricity price policy. Heat pump heating has problems such as frosting and low efficiencies in cold northern regions. To solve these problems, an exergy analysis model of each component of a phase-change heat-storage coupled solar heat pump heating system was established. Exergy analysis was performed on each component of the system to determine the direction of optimization and improvement of the phase-change heat-storage coupled solar heat pump heating system. The results showed that optimizing the heating-end heat exchanger of the system can reduce the exergy loss of the system. When the phase-change heat-storage tank meets the heating demand, its volume should be reduced to lower the exergy loss of the tank heat dissipation. Air-type solar collectors can increase the income exergies of solar collectors.
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