矿用多功能热泵机组制冷供热能级分析及应用

为研究与分析多功能热泵机组在供能和用能方面的匹配问题,建立了该机组不同工况能级分析模型、并推导了相应的表达公式。继而进行了理想工况与采用制冷剂后不同工况下的能级计算与分析。研究结果表明:多功能热泵系统的输入输出能级差较小、其供能与用能匹配合理;在机组设计与应用中应尽量降低冷凝温度、提高蒸发温度、减小机组换热器与冷热源之间的传热温差,减小系统损失、降低电能消耗;机组在制冷同时回收冷凝热工况下节能潜力最大。

Energy Analysis on Cooling and Heating of Multi-functional Heat Pump Unit and its Application in Mine

Analysis models are established for a multi-functional heat pump unit (MFHPU) for mine cooling, district heating and waste heat recovery in different working conditions and formulae are proposed accordingly in order to study the performance of the MFHPU in heat supply and consumption. Then energy analysis and calculation are developed on theoretical working condition and real working conditions adopting real refrigeration agents. The research result shows: the difference between the input and output energy of the MFHPU system is small, the energy supply and consumption matches well, it is better to reduce condensing temperature, increase evaporating temperature and reduce temperature difference of heat transfer between heat exchangers of the MFHPU and cold or heat sources during design and application of the MFHPU, and the MFHPU has an optimal performance in the working condition wherein cooling and heat recovery are performed simultaneously.