Silane functionalization on zeolite 13X surface for direct steam generation in a solid sorption heat pump

2021 ◽  
Vol 244 ◽  
pp. 114457
Author(s):  
Linsheng Zhang ◽  
Bing Xue ◽  
Tingting Chen ◽  
Guangyao Li
Keyword(s):  
Heat Pump ◽  
Steam Generation ◽  
Zeolite 13X ◽  
Direct Steam ◽  
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

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

Performance of Partitioned-Bed Sorption Heat Pump Systems

1995 ◽  
Vol 2 (4) ◽  
pp. 283-293 ◽  
Author(s):  
W. Zheng ◽  
W. M. Worek ◽  
G. Nowakowski
Keyword(s):  
Heat Pump ◽  
Sorption Heat ◽  
Sorption Heat Pump

Effect of Design and Operating Parameters on the Performance of Two-Bed Sorption Heat Pump Systems

1995 ◽  
Vol 117 (1) ◽  
pp. 67-74 ◽  
Author(s):  
W. Zheng ◽  
W. M. Worek ◽  
G. Nowakowski
Keyword(s):  
Heat Exchanger ◽  
Heat Pump ◽  
Heat Transfer Fluid ◽  
Switching Frequency ◽  
Operating Parameters ◽  
Switching Speed ◽  
Pump System ◽  
Heat Pump System ◽  
Sorption Heat ◽  
Sorption Heat Pump

The effect of design and operating parameters on the performance of closed-cycle, two-bed sorption heat pump systems were investigated. The parameters studied in this paper included the effects of bed switching frequency (i.e., the switching speed), the sorbent bed NTU, the thermal resistance within the sorbent, the contact resistance between the sorbent and the tube wall of the heat transfer fluid, the fraction of inert mass within the sorbent bed heat exchanger, and the amount of fluid resident within the heat exchanger. The results show that the performance of a sorption heat pump system is extremely sensitive to the switching speed. In fact, the value of the switching speed that optimizes the COP is different from the value that optimizes the overall cooling capacity. Such a performance characteristic allows the design of multispeed sorbent bed heat pumps to be operated in such a way to follow the load while still maximizing the system COP. However, operation of the system at switching speeds away from the optimum values can cause a dramatic deterioration in system performance.

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