Confirmation and Prevention of Vapor Bypass in Absorption Heat Pump with U-Pipe Pressure Separation Device Caused by Upward Side Two-phase Flow

2021 ◽  
Author(s):  
Chaoyi Zhu ◽  
Xiaoyun Xie ◽  
Yi Jiang
Keyword(s):  
Heat Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Separation Device ◽  
Absorption Heat Pump

Two-phase flow investigation in channel design of the roll-bond cooling component for solar assisted PVT heat pump application

2021 ◽  
Vol 235 ◽  
pp. 113988
Author(s):  
Jian Yao ◽  
Wenjie Liu ◽  
Yao Zhao ◽  
Yanjun Dai ◽  
Junjie Zhu ◽  
...  
Keyword(s):  
Heat Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Channel Design ◽  
Two Phase ◽  
Flow Investigation

Downward two-phase flow applications for a non-conventional heat pump

2004 ◽  
Vol 27 (6) ◽  
pp. 629-638 ◽  
Author(s):  
S. Arosio ◽  
R. Carlevaro ◽  
M. Guilizzoni
Keyword(s):  
Heat Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

Erratum to ‘Downward two-phase flow applications for a non-conventional heat pump’

2005 ◽  
Vol 28 (5) ◽  
pp. 791
Author(s):  
S. Arosio ◽  
R. Carlevaro ◽  
M. Guilizzoni
Keyword(s):  
Heat Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

Analysis of Two-Phase Flow Solar Collectors With Application to Heat Pumps

1982 ◽  
Vol 104 (4) ◽  
pp. 358-365 ◽  
Author(s):  
S. K. Chaturvedi ◽  
Y. F. Chiang ◽  
A. S. Roberts
Keyword(s):  
Heat Pump ◽  
Thermal Performance ◽  
Two Phase Flow ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Working Fluid ◽  
Phase Flow ◽  
Solar Collectors ◽  
Ambient Conditions ◽  
Two Phase

A thermodynamic model is developed to analyze the thermal performance of two-phase solar collectors. The well-known equilibrium homogeneous theory is used to model the two-phase flow in the solar collectors. The resultant set of coupled ordinary differential equations for saturated pressure and quality of working fluid in the collector tubes are solved by an iterative procedure using a fourth-order Runge-Kutta method. The results are then applied to determine the thermal performance of a solar assisted heat pump which uses two-phase flow collectors as the evaporator. The results indicate that even with the use of less expensive bare solar collectors as evaporator for the heat pump, the heating coefficient of performance (COPH) as high as 6 can be obtained under realistic ambient conditions provided a proper matching exists between the collector’s evaporative capacity and the compressor’s pumping capacity.

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