Performance analysis of a novel expansion valve and control valves designed for a waste heat-driven two-adsorber bed adsorption cooling system

2016 ◽  
Vol 100 ◽  
pp. 1119-1129 ◽  
Author(s):  
Amir Sharafian ◽  
Patric Constantin Dan ◽  
Wendell Huttema ◽  
Majid Bahrami
2011 ◽  
Vol 137 (2) ◽  
pp. 99-107 ◽  
Author(s):  
Wipawadee Wongsuwan ◽  
Wirote Ritthong ◽  
Tanongkiat Kiatsiriroat ◽  
Atipoang Nuntaphan

2015 ◽  
Vol 23 (02) ◽  
pp. 1530001 ◽  
Author(s):  
Vinayak D. Ugale ◽  
Amol D. Pitale

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.


2013 ◽  
Vol 27 (1) ◽  
pp. 14-27
Author(s):  
W. Ritthong ◽  
T. Kiatsiriroat ◽  
W. Wongsuwan ◽  
A. Nuntaphan

Energy ◽  
2016 ◽  
Vol 112 ◽  
pp. 481-493 ◽  
Author(s):  
Amir Sharafian ◽  
Seyyed Mahdi Nemati Mehr ◽  
Poovanna Cheppudira Thimmaiah ◽  
Wendell Huttema ◽  
Majid Bahrami

2015 ◽  
Author(s):  
Anutosh Chakraborty ◽  
Syed Muztuza Ali ◽  
How Wei Benjamin Teo

This article presents the dynamic behaviors of two bed adsorption chiller utilizing the composite adsorbent “immobilization of NH2, -NO2, -OH groups to MiL-101(Cr)” as adsorbent and water as adsorbate, which is based on the experimentally confirmed adsorption isotherms and kinetics data. The experimentally measured MOFs + water based isotherms and kinetics data are fitted with adsorption isotherm models and linear driving force kinetics equations. Compared with the experimental data of conventional adsorption chiller based on zeolites/silica gel-water system, we found that the newly working pair provides better cooling capacity and performances in terms of COP and adsorption bed size. From numerical simulation, it is also found that the cooling capacity can be increased up to 20 percent of the parent silica gel-water adsorption chiller and the COP can be improved up to 25% more at optimum conditions.


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