Development of Finned Tube Type Adsorber Bed for Adsorption Cooling System

2019 ◽  
pp. 533-552
Author(s):  
Bhushan C. Behede ◽  
Uday S. Wankhede
Keyword(s):  
Cooling System ◽  
Finned Tube ◽  
Tube Type ◽  
Adsorption Cooling System ◽  
Adsorber Bed

Heat Recovery Time of Adsorption Cooling System

2018 ◽  
Vol 26 (02) ◽  
pp. 1850014 ◽  
Author(s):  
Xuan Quang Duong ◽  
Ngoc Vi Cao ◽  
Jae Dong Chung
Keyword(s):  
Recovery Time ◽  
Heat Recovery ◽  
Cooling System ◽  
Recovery Process ◽  
Finned Tube ◽  
Hot Water ◽  
Two Dimensional ◽  
Cycle Times ◽  
Tube Type ◽  
Adsorption Cooling System

In this study, a two-dimensional numerical model of finned-tube type adsorbers was developed and used to examine heat recovery time to improve the performance of an adsorption cooling system. The optimal heat recovery time, which resulted in the highest COP, was determined for a range of heat source temperatures (60–90[Formula: see text]C) and cycle times (600–1200[Formula: see text]s). The introduced heat recovery process enhanced COP, but also reduced SCP. This penalty became more serious when the hot water temperature was low and cycle time was short, which serves as a guideline for when heat recovery should be adopted in a given operating condition.

Effect of Un-Balanced Water Supply and Nonuniform Pressure Distribution on the Performance of an Adsorption Cooling System

2019 ◽  
Vol 27 (02) ◽  
pp. 1950014
Author(s):  
Ngoc Vi Cao ◽  
Xuan Quang Duong ◽  
Woo Su Lee ◽  
Jae Dong Chung
Keyword(s):  
Water Supply ◽  
Pressure Distribution ◽  
Cooling System ◽  
Three Dimensional ◽  
Cooling Water ◽  
Finned Tube ◽  
Adsorption Chiller ◽  
Heating Water ◽  
Tube Type ◽  
Adsorption Cooling System

A three-dimensional numerical analysis was conducted to examine the effect on performance of un-balanced heating/cooling water supply and nonuniform pressure distribution in the beds, issues observed in an experiment by our colleague during the development of a 35[Formula: see text]kW prototype finned-tube type adsorption chiller. Case studies were conducted with reference values of [Formula: see text][Formula: see text]m/s, [Formula: see text][Formula: see text]Pa and [Formula: see text][Formula: see text]Pa, and the differences in [Formula: see text][Formula: see text]m/s, [Formula: see text][Formula: see text]Pa and [Formula: see text][Formula: see text]Pa. A remarkable increase in COP was found for the cases of un-balanced heating water supply and nonuniform pressure distribution when the bed was connected to the evaporator. However, after integration of multi-modules, the effect was smoothed out, which removed the worry about the degradation in the overall COP. The effect of un-balanced cooling water supply and nonuniform pressure distribution when the bed was connected to the condenser was not discernible. In all cases, the change in SCP was negligible.

Optimum fin spacing of finned tube adsorber bed heat exchangers in an exhaust gas-driven adsorption cooling system

2018 ◽  
Vol 232 ◽  
pp. 504-516 ◽  
Author(s):  
Behzad Golparvar ◽  
Hamid Niazmand ◽  
Amir Sharafian ◽  
Amirjavad Ahmadian Hosseini
Keyword(s):  
Heat Exchangers ◽  
Cooling System ◽  
Finned Tube ◽  
Exhaust Gas ◽  
Adsorption Cooling System ◽  
Fin Spacing ◽  
Adsorber Bed

A Review on Working Pair Used in Adsorption Cooling System

2015 ◽  
Vol 23 (02) ◽  
pp. 1530001 ◽  
Author(s):  
Vinayak D. Ugale ◽  
Amol D. Pitale
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Cooling System ◽  
Physical Adsorption ◽  
Vital Role ◽  
Transfer Performance ◽  
Adsorption System ◽  
Adsorption Cooling System ◽  
Adsorber Bed

Adsorption cooling system find its application in refrigeration, air conditioning, chiller, Ice making, etc. It uses thermal energy as driving force. Adsorption systems are environmental friendly (zero global warming potential and ozone depleting potential) and also eliminates use of compressor and minimize vibration problem. So it can be used as substitute for conventional vapor compression refrigeration system or vapor absorption system. The adsorption generally classified in two types as physical adsorption (due to weak van der waal forces) and chemical adsorption (chemical reaction between adsorbent and adsorbate form new molecules). The working pair of adsorber and adsorbate play vital role in the performance of adsorption system. Activated carbon, zeolite, silica gel are commonly used adsorber and water, ammonia, methanol and ethanol can be used as adsorbate. The poor heat and mass transfer performance of adsorption is major challenge for researchers. The heat transfer performance of adsorption system can be increased by increasing heat transfer area of adsorber bed i.e., design of new adsorber bed, while mass transfer performance is improved by use of new adsorbent with higher sorption rate. Composite adsorber solve the problem of heat and mass transfer performance of chemical adsorbents and adsorption quantity of physical adsorbents by combination of chemical and physical adsorbent but it can add some limitation with it. In this paper, various adsorption pair, their selection, design of adsorber bed, methods to improve thermal performance of adsorber bed is reviewed with their properties, advantages and limitations.

scholarly journals Performance investigation of integrated PVT/adsorption cooling system under the climate conditions of Middle East

2020 ◽  
Vol 6 ◽  
pp. 168-173
Author(s):  
Ahmed A. Hassan ◽  
Ahmed E. Elwardany ◽  
Shinichi Ookawara ◽  
Ibrahim I. El-Sharkawy
Keyword(s):  
Middle East ◽  
Cooling System ◽  
Climate Conditions ◽  
Adsorption Cooling System

An Experimental Study of Adsorption Cooling System by Using Low Grade Heat Source

2018 ◽  
Author(s):  
H. M. Elgohary ◽  
H. M. Soliman ◽  
A. M. Soliman ◽  
H. H. Gouda ◽  
S.P. Chowdhury
Keyword(s):  
Experimental Study ◽  
Heat Source ◽  
Cooling System ◽  
Low Grade ◽  
Adsorption Cooling System ◽  
Low Grade Heat
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