Performance optimization of two-bed closed-cycle solid-sorption heat pump systems

1995 ◽  
Vol 31 (1-2) ◽  
pp. 1-9 ◽  
Author(s):  
W. Zheng ◽  
W. M. Worek ◽  
G. Nowakowski
Keyword(s):  
Heat Pump ◽  
Performance Optimization ◽  
Closed Cycle ◽  
Sorption Heat ◽  
Sorption Heat Pump

Readsorption Processes in a Sorption Bed Heat Exchanger During Pressurization and Depressurization

1995 ◽  
Vol 117 (4) ◽  
pp. 865-870 ◽  
Author(s):  
W. Zheng ◽  
W. M. Worek
Keyword(s):  
Heat Exchanger ◽  
Heat Pump ◽  
Initial Temperature ◽  
The Other ◽  
Sorption Heat ◽  
Sorption Heat Pump

Readsorption occurs inside a sorbent-bed heat exchanger during the pressurization and depressurization processes, causing the adsorbate to be relocated from one end of the sorption bed heat exchanger to the other. In this paper, the readsorption processes are quantitatively determined for both the pressurization and depressurization processes in a sorbent-bed heat exchanger with a uniform initial temperature, loading, and pressure. Also, the readsorption that occurs during a typical operation of a two-bed sorption heat pump is quantified. The results show that the readsorption can cause as much as 30 percent of the ammonia in a sorbent-bed heat exchanger to be reallocated.

Pressure boost thermochemical sorption heat pump cycle

Energy ◽  
2019 ◽  
Vol 169 ◽  
pp. 1090-1100 ◽  
Author(s):  
Peng Gao ◽  
Liang-Liang Shao ◽  
Chun-Lu Zhang
Keyword(s):  
Heat Pump ◽  
Sorption Heat ◽  
Sorption Heat Pump

Effect of Operating Conditions on the Performance of Two-Bed Closed-Cycle Solid-Sorption Heat Pump Systems

1995 ◽  
Vol 117 (3) ◽  
pp. 181-186 ◽  
Author(s):  
W. Zheng ◽  
W. M. Worek ◽  
G. Nowakowski
Keyword(s):  
Ambient Temperature ◽  
System Performance ◽  
Cooling Capacity ◽  
Heat Pumps ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Closed Cycle ◽  
Sorption Heat ◽  
Cycling Speed ◽  
Sorption Heat Pump

The effect of two operating parameters, the regeneration temperature and the ambient temperature, on the performance of two-bed, closed-cycle solid-sorption heat pumps is investigated. The results show that increasing the regeneration temperature can improve both the COP and cooling capacity, and the effect on cooling capacity is more significant than the COP. Increasing the regeneration temperature from 180°C to 260°C, the cooling capacity increases by 50 percent and the COP improves 20 percent. When the ambient temperature drops, the system performance increases significantly. When the ambient temperature decreases by 10°C from the design point of 35°C, the COP and cooling capacity increases by 50 percent and 40 percent, respectively. Also, the bed cycling speed should be increased to achieve the optimum system performance when the regeneration temperature is higher or the ambient temperature becomes lower.

scholarly journals Efficiency analysis of semi-open sorption heat pump systems

2017 ◽  
Vol 110 ◽  
pp. 95-104 ◽  
Author(s):  
Kyle R. Gluesenkamp ◽  
Devesh Chugh ◽  
Omar Abdelaziz ◽  
Saeed Moghaddam
Keyword(s):  
Heat Pump ◽  
Efficiency Analysis ◽  
Sorption Heat ◽  
Sorption Heat Pump

Screening of Ionic Liquid/H2O Working Pairs for Application in Low Temperature Driven Sorption Heat Pump Systems

2015 ◽  
Vol 3 (4) ◽  
pp. 750-757 ◽  
Author(s):  
Sabine Popp ◽  
Andreas Bösmann ◽  
René Wölfel ◽  
Peter Wasserscheid
Keyword(s):  
Ionic Liquid ◽  
Low Temperature ◽  
Heat Pump ◽  
Sorption Heat ◽  
Sorption Heat Pump
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