Thermodynamic and heat‐hydrogen transfer analyses of novel multistage hydrogen‐alloy sorption heat pump

2019 ◽  
Vol 44 (4) ◽  
pp. 2925-2940 ◽  
Author(s):  
Shajiullah Naveed Syed ◽  
Vinod Kumar Sharma ◽  
Anil Kumar Emadabathuni
Keyword(s):  
Heat Pump ◽  
Hydrogen Transfer ◽  
Sorption Heat ◽  
Sorption Heat Pump

scholarly journals Performance investigation of multi-stage hydrogen-based sorption heat pump

2021 ◽  
Vol 49 (1) ◽  
pp. 121-127
Author(s):  
Syed Naveed ◽  
Satyasreet Jena ◽  
Sharma Kumar ◽  
Kumar Anil
Keyword(s):  
Heat Pump ◽  
Heat Supply ◽  
Hydrogen Transfer ◽  
Metal Hydrides ◽  
Maximum Temperature ◽  
Heating Process ◽  
Multi Stage ◽  
Bed Temperature ◽  
Sorption Heat ◽  
Sorption Heat Pump

Metal hydrides are broadly investigated, for more than three decades, towards its application for cooling and heating applications. As a continuation of those works, in the present study, authors have investigated the performance of a multi-stage sorption heat pump for multiple cooling and heating outputs. The metal hydrides selected for the present study are Ti0.98Zr0.02V0.43Fe0.09Cr0.05Mn1.5, MmNi4.7Al0.3, LaNi4.8Al0.2 and Zr0.9Ti0.1 Cr0.9Fe1.1, with the operating temperature range as 20°C for cooling output, 45°C for heating output and 140°C for heat supply. The system produces three cooling and four heating outputs with only one heat input. The performance of the system is investigated, via finite volume approach, in terms of hydrogen interaction within the coupled beds, bed temperature variations and heat interactions during hydrogen transfer processes. The minimum temperature observed during the cooling process is 0.5°C, whereas the maximum temperature observed during the heating process is 60°C, which shows that the obtained temperature is capable of space air-conditioning. On the other hand, the maximum cooling and heating outputs, at a particular instant of time, are estimated at 361 W and 402 W, respectively with a heat supply of 23 W.

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
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