Numerical Simulation of a Two-Stage Hybrid Heat Pump

被引：1

作者：

Jeong, Siyoung ^{[1
]}

Yun, Han-Gu ^{[1
]}

Park, Kiwoong ^{[1
]}

Park, Seong-Ryong ^{[2
]}

Kim, Minsung ^{[2
]}

机构：

[1] Sogang Univ, Dept Mech Engn, Seoul, South Korea

[2] Korea Inst Energy Res, Daejeon, South Korea

来源：

TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B | 2010年 / 34卷 / 02期

关键词：

Hybrid Heat Pump; Single-Stage; Two-Stage; Cycle Simulation;

D O I：

10.3795/KSME-B.2010.34.2.191

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Hybrid heat pumps, which combine the vapor compression and absorption heat pump cycle, can efficiently produce hot water of 80 degrees-90 degrees C from the low temperature of similar to 50 degrees C. In this study, the performance of a two-stage hybrid heat pump (HHP) was compared with a single-stage hybrid heat pump using EES (Engineering Equation Solver). For the same operating conditions, the two-stage HHP showed a slightly higher COP (Coefficient Of Performance) and more stable operating conditions than the single-stage HHP. Moreover, the maximum working fluid temperature of the two-stage HHP was found to be lower than that of the single-stage HHP by about 40 K, which makes the working conditions of the lubricating oil safer. The COPs of both systems decreased with increasing UA-values. However, the heat output of the HHP was increased at the same time.

引用

页码：191 / 196

页数：6

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