Influence of bed temperature on performance of silica gel/methanol adsorption refrigeration system at adsorption equilibrium

2020 ◽  
pp. 1-8
Author(s):  
Anirban Sur ◽  
Sharnil Pandya ◽  
Ramesh P. Sah ◽  
Ketan Kotecha ◽  
Swapnil Narkhede
Keyword(s):  
Silica Gel ◽  
Adsorption Equilibrium ◽  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Methanol Adsorption ◽  
Bed Temperature

Investigation on Influence of Solar Radiation on Performance of Solar Adsorption Refrigeration System

2014 ◽  
Vol 953-954 ◽  
pp. 57-60
Author(s):  
Xiang Bo Song ◽  
Xu Ji ◽  
Ming Li ◽  
Jie Qing Fan ◽  
Bin Luo ◽  
...  
Keyword(s):  
Solar Radiation ◽  
System Performance ◽  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Bed Temperature ◽  
The Relationship

This article conducts the research on the relationship between the solar radiation and the adsorption bed temperature, the adsorption bed pressure and the system performance, and obtains that the solar radiation indirectly influences the system refrigeration performance through influencing the adsorption bed temperature and adsorption bed pressure. And in a certain range, the bigger solar radiation is, the higher adsorption bed temperature is, the system refrigeration efficiency is higher, the maximum refrigeration efficiency is 0.122.

scholarly journals Energy Analysis and Performance Evaluation of the Adsorption Refrigeration System

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
H. Z. Hassan
Keyword(s):  
Energy Analysis ◽  
Adsorption Equilibrium ◽  
Operating Parameters ◽  
Differential Analysis ◽  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Cooling Systems ◽  
And Performance ◽  
Energy Conservation Principle ◽  
Theoretical Performance

A complete steady state thermodynamic differential analysis is developed for the adsorption-based refrigeration systems. The introduced thermodynamic model accurately represents the behaviour of adsorption cooling systems, based on a precise, reasonable, and clear fundamental approach. Based on the energy conservation principle, all components and processes in the system are analyzed. The dynamics of adsorption is expressed by the Dubinin-Astakhov adsorption equilibrium model. All types of energy interactions are evaluated in order to determine the theoretical performance and the operating parameters of the system. Moreover, the actual thermodynamic properties of the refrigerant are considered in developing the model. The case studied is an ice maker which uses activated carbon-methanol as the working pair.

scholarly journals Influence of initial bed temperature on bed performance of an adsorption refrigeration system

2018 ◽  
Vol 22 (6 Part A) ◽  
pp. 2583-2595 ◽  
Author(s):  
Anirban Sur ◽  
Randip Das ◽  
Ramesh Sah
Keyword(s):  
Activated Carbon ◽  
Cycle Time ◽  
Cooling System ◽  
Cooling Capacity ◽  
Heat Transfer Fluid ◽  
Low Grade ◽  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Bed Temperature ◽  
Engineering Department

The study deals with the complete dynamic analysis (numerical and practical) of an existing adsorption refrigeration system. The adsorption refrigeration setup is available at Indian School of Mines (Dhanbad, India), Mechanical engineering department. The system operates with activated carbon (as an adsorbent) and methanol (as refrigerant).Numerical model is established base on energy equation of the heat transfer fluid (water) and transient heat and mass transfer equations of the adsorbent bed. The input temperature of heat source is 90?C, which is very low compared to other low-grade energy input refrigeration system. The thermo-physical properties of an adsorptive cooling system (using activated carbon?methanol pair) are considered in this model. In this analysis influence of initial bed temperature (T1) on the bed performances are analysed mathematically and experimentally. The simulation and practical results of this system show that the cycle time decreases with increase in initial bed temperature and the minimum cycle time is 10.74 hours (884 minutes for practical cycle) for initial bed temperature of 40?C. Maximum system COP and specific cooling capacity are 0.436 and 94.63 kJ/kg of adsorbent under a condenser and evaporator temperatures of 35?C and 5?C, respectively. This analysis will help to make a comparison between simulated and experimental results of a granular bed adsorption refrigeration system and also to meet positive cooling needs in off-grid electricity regions.

The Impact of Condensing Pressure on the Performance of Solar Solid Adsorption Refrigeration System

2015 ◽  
Vol 1092-1093 ◽  
pp. 109-112
Author(s):  
Xiang Bo Song ◽  
Xu Ji ◽  
Ming Li ◽  
Jia Xing Liu ◽  
Shao Lin Yin
Keyword(s):  
Working Conditions ◽  
System Performance ◽  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Bed Temperature ◽  
Temperature And Pressure ◽  
Condensing Pressure ◽  
The Impact

A new solar solid adsorption refrigeration system is established in this paper, and the variation relationship between the adsorbent bed temperature and pressure with time are analyzed, and the effects of adsorbent bed condensing pressure on the system performance is researched. Results show that, under the same working conditions, when the condensing pressure is 39 kPa, the daily ice-making capacity of system reach to 5.5 kg with the refrigerating capacity of 2.26 MJ; And when the condensing pressure is 63 kPa, the ice-making capacity of system is only for 3 kg with the refrigerating capacity of 1.48 MJ; The refrigerating capacity of the former is 1.5 times of the latter.

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