In this study, thermodynamic inefficiencies of the components and the whole system are quantified by exergy destruction. The performance of an air source heat pump water heater (ASHPWH) is examined experimentally under varying ambient conditions from the exergy destruction aspect. The exergy destruction is calculated for each moment through the entire heating period with regard to collected temperature and pressure data under various ambient conditions. The exergy destructions are examined continuously in a sequence from the beginning to the end of the water heating process. This approximation allows the designer and the manufacturer to see the progress of exergy destruction through the entire heating period to evaluate the performance of every component for avoiding irreversibilities and improving the ASHPWH. During these observations, three individual zones are observed in which the exergy destruction characteristics have changed. Furthermore, the impact of the ambient conditions on these zones is identified either. The thermodynamic properties and exergy destruction values are computed for all data collected by a MATLAB code. The results would be helpful to picture out the true evolution of the exergy destruction from component aspect either solely or combined effect of them during the water heating period.

在这项研究中，组件的热力学效率低下和整个系统的热力学效率低下可以通过火用破坏来量化。从火用破坏的角度出发，在变化的环境条件下，通过实验检查了空气源热泵热水器（ASHPWH）的性能。根据在各种环境条件下收集的温度和压力数据，针对整个加热周期中的每个时刻计算出火用破坏。从水加热过程的开始到结束，对火用破坏进行连续检查。通过这种近似，设计人员和制造商可以观察到整个加热期间的火用破坏进程，以评估每个组件的性能，从而避免不可逆性并改善ASHPWH。在这些观察中，观察到三个单独的区域，其火用破坏特性发生了变化。此外，还确定了环境条件对这些区域的影响。对于由MATLAB代码收集的所有数据，都将计算热力学性质和火用破坏值。这些结果将有助于从水加热期间单个或组合影响的角度描述火用破坏的真实演变。