CAJ | 학술논문

冷却塔逆用已经在热泵制热系统中得到实际应用并取得了一定的节能效果。本文从热力学第二定律的角度，对冷却塔逆用作为低温热源的热泵制热系统进行了火用分析。构建了系统各部件火用分析数学模型，并结合实验系统现场测试数据进行分析，分析过程中采用火用损失、火用效率、火用损失率、火用损失系数评价指标综合评价。结果表明在系统制热工况下，末端空气处理机组与压缩机火用损失、火肭员失率明显高于整个系统中其他设备及部件，火用损失率分别为14％和12％，是整个系统改进的主要对象。该研究有助于诊断出系统主要设备的薄弱环节，并能对系统的节能潜力做出判断，为进一步优化系统指明方向。
냉각탑역용이경재열빙제열계통중득도실제응용병취득료일정적절능효과。본문종열역학제이정률적각도，대냉각탑역용작위저온열원적열빙제열계통진행료화용분석。구건료계통각부건화용분석수학모형，병결합실험계통현장측시수거진행분석，분석과정중채용화용손실、화용효솔、화용손실솔、화용손실계수평개지표종합평개。결과표명재계통제열공황하，말단공기처리궤조여압축궤화용손실、화눌원실솔명현고우정개계통중기타설비급부건，화용손실솔분별위14％화12％，시정개계통개진적주요대상。해연구유조우진단출계통주요설비적박약배절，병능대계통적절능잠력주출판단，위진일보우화계통지명방향。
A mechanical draft cooling tower may be reversibly used, as part of a heat pump system for service hot water, to extract free heat from ambient air. It is advantageous in minimizing the total installation and operating cost. The research focused on the analysis and the evaluation of the exergy performance of the heating system and its components. The second law of thermodynamics performance analysis, also called the exergy performance analysis, can point out the inefficient components of the system with great improvement potential more accurately. And experimental study of a heat pump system is presented, and the analytical formulas of exergy loss, exergy efficiency, exergy loss rate and exergy loss coefficient were derived, respectively. According to the comparison, the most exergy is consumed by the AHU and the compressor, whose exergy destruction ratios are about 14% and 12%, respectively. To achieve better whole system's exergy performance, the recommend improvements should focus on these two kind of components. Furthermore, the results can draw an engineer's attention towards the components where the most availability is being destroyed and quantify the extent to which modification of one component affects, favorably or unfavorably, the performance of other components of the system.