基于空气源热泵热水系统的一种新型恒温蓄热机组运行特性研究

Research on operation characteristics of a new thermostatic heat storage unit based on air-source heat pump

空气源热泵热水系统的不同加热温差对系统加热效率有较大影响,较低的初始加热温度,较大的加热温差更有利于系统加热效率的提升。基于此原理研制的一种新型恒温蓄热机组,通过切换控制并联罐体交替运行,使得储热水罐加热及供热工况相对独立,在保证系统供水水温及压力稳定的前提下最大化系统加热效率。

The different heating temperature difference of air-source heat pump hot water sup-ply system has a great influence on the system heating efficiency.Lower initial heating temperature and larger heating temperature difference are more conducive to the improvement of system heating efficiency.Based on this principle,a new type of thermostatic heat storage unit is developed,which switches and controls the parallel tanks to operate alternately,so that the heating and heating con-ditions of the hot water storage tank are relatively independent.The heating efficiency of the sys-tem is maximized on the premise of ensuring the stability of water temperature and pressure of the system.