Thermodynamic analysis and theoretical study of a continuous operation solar-powered adsorption refrigeration system

Energy ◽  
2013 ◽  
Vol 61 ◽  
pp. 167-178 ◽  
Author(s):  
H.Z. Hassan ◽  
A.A. Mohamad
Keyword(s):  
Thermodynamic Analysis ◽  
Theoretical Study ◽  
Continuous Operation ◽  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Solar Powered

Design and Analysis of Cooling Cabinet for Vaccine Storage

2014 ◽  
Vol 984-985 ◽  
pp. 1180-1183
Author(s):  
N. Saravanan ◽  
R. Rathnasamy ◽  
V. Ananchasivan
Keyword(s):  
Mathematical Model ◽  
Cooling Effect ◽  
Refrigeration System ◽  
Ansys Software ◽  
Adsorption Refrigeration ◽  
Ammonia Adsorption ◽  
Energy Demands ◽  
Solar Intensity ◽  
Solar Powered ◽  
The Impact

Solar powered adsorption refrigeration system is renewable source in the future energy demands and more useful for off-grid area. In this paper a mathematical model was developed to investigate the performance of a cooling cabinet of a activated carbon-ammonia adsorption refrigeration system, and a new effective method about the refrigeration studies. A brief thermodynamic study of the cooling cabinet is carried out and the effect of operating parameters such as temperature, pressure, cooling effect of the system is numerically analyzed. The impact of solar intensity on performance of the system is significant. The cooling cabinet model is completely analysied for varies capacity and it is able to calculate the cooling cabinet coil length .The designed mathematical model is analyzed by the use of coolpack software and the results are compared with ansys software. It is observed that the system operate more efficient while maximum solar intensity and the cooling effect. Key words: Solar, Adsorption Refrigeration, Mathematical model, Analysis, Solar intensity.

Evaluation of Minimum, Maximum and Optimum Source Temperature for Solar-Powered Adsorption Refrigeration System

2020 ◽  
Vol 45 (11) ◽  
pp. 9735-9745
Author(s):  
Nitin D. Banker ◽  
Devendra Dandotiya ◽  
Sai Vamsi Reddy Morthala ◽  
Mahesh Gaddam ◽  
Sridhar Kakileti
Keyword(s):  
Refrigeration System ◽  
Adsorption Refrigeration ◽  
Source Temperature ◽  
Solar Powered

Performance Study of a Solar Adsorption Refrigeration System

2013 ◽  
Vol 860-863 ◽  
pp. 223-229
Author(s):  
Yan Ling Liu ◽  
Xue Zeng Shi
Keyword(s):  
Air Conditioning ◽  
Adsorption System ◽  
Refrigeration System ◽  
Performance Study ◽  
Adsorption Refrigeration ◽  
Air Conditioning System ◽  
Continuous Adsorption ◽  
Refrigerant Circuit ◽  
Simulation Results ◽  
Solar Powered

This paper presents the simulation of a solar-powered continuous adsorption air-conditioning system with the working pair of silica gel and water. In order to make the adsorption system more suitable to use solar energy to supply cooling continuously during daytime, a new adsorption system without refrigerant valves is being developed in SJTU recently. By using this system, the problem such as pressure drop along refrigerant circuit can be resolved. The frequent switches of refrigerant valves can also be omitted. The daytime long simulation results (ranging from 6:00 to 18:00) demonstrate that the solar-powered adsorption system can supply a fairly steady cooling output all the time. Based on the results, parametric study is also undertaken to optimize the design.

Thermodynamic Analysis of Heat and Mass Transfer Enhancement for R134a-DMAC/CNT Vapour Absorption Refrigeration System

2014 ◽  
Vol 592-594 ◽  
pp. 1832-1836 ◽  
Author(s):  
A. Kathiravan ◽  
E. Karthikeyan ◽  
V. Mariappan ◽  
Chidambaram T. Muthiah
Keyword(s):  
Thermodynamic Analysis ◽  
Volume Concentration ◽  
Theoretical Study ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Transfer Enhancement ◽  
Mass Transfer Enhancement ◽  
Nano Fluid ◽  
Absorption Refrigeration System ◽  
Nano Fluids

The objective of this paper is to study thermodynamic analysis of R134a-DMAC and R134a-DMAC/CNT vapour absorption system and compare this both system performance. This investigation for R134a-DMAC is carried out based on the correlations available in the literature. The change of thermophysical properties for R134a-DMAC/CNT is predicted and is incorporated in the pure R134a-DMAC correlations. The analysis is carried for 1 kW evaporator capacity and effectiveness of solution heat exchanger is taken as 0.8. Variations in the performance parameters of the system with and without nano fluids are studied against various operating temperatures of generator, absorber and different volume concentration. The result of this theoretical study shows that co-efficient of performance (COP) of system with CNT nano fluid is improved as well as the absorber capacity also increased due to enhanced heat transfer of nano fluids. It also observed that the performance achieved by the pure R134a-DMAC at the elevated generator temperature could be achieved at low generator temperature using R134a-DMAC/CNT.

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