Solar-Powered, Liquid-Desiccant Air Conditioner for Low-Electricity Humidity Control

2012 ◽  
Author(s):  
Jesse Dean ◽  
Eric Kozubal ◽  
Lesley Herrmann ◽  
Jeff Miller ◽  
Andy Lowenstein ◽  
...  
Keyword(s):  
Air Conditioner ◽  
Liquid Desiccant ◽  
Humidity Control ◽  
Solar Powered

scholarly journals Solar-Powered, Liquid-Desiccant Air Conditioner for Low-Electricity Humidity Control: Report and Summary Report

2012 ◽  
Author(s):  
J. Dean ◽  
E. Kozubal ◽  
L. Herrmann ◽  
J. Miller ◽  
A. Lowenstein ◽  
...  
Keyword(s):  
Air Conditioner ◽  
Summary Report ◽  
Liquid Desiccant ◽  
Humidity Control ◽  
Solar Powered

Study on Water-Cooled Solar Semiconductor Air Conditioner

2015 ◽  
Vol 9 (1) ◽  
pp. 135-140
Author(s):  
Dong Zhi-Ming ◽  
Guo Li-Xia ◽  
Chang Ji-Bin ◽  
Zhou Xue-Bin
Keyword(s):  
Air Conditioning ◽  
Working Condition ◽  
Test System ◽  
Air Conditioner ◽  
Solar Panels ◽  
Experimental Room ◽  
Maximum Value ◽  
Cooling Unit ◽  
Battery Capacity ◽  
Solar Powered

Aiming to compare the cooling effect, two types of solar-powered semiconductor air-conditioning devices were designed in different structures. According to the cooling load in an experimental room, the solar panels and battery capacity were determined for the development of a test system. In the same working condition, a comparison test was carried out to examine the cooling performance. Experimental results showed that the design of dual water-cooled cooling unit presented a higher ratio of energy efficiency, with its maximum value of 1.08. By observing the experimental data of the prototype, its comparative economic evaluation results indicated that the annualized cost of solar semiconductor airconditioning was app. 2.7 times that of air-conditioning made from an ordinary compressor.

Cascaded liquid desiccant system for humidity control in space conditioned by cooled membrane ceiling and displacement ventilation

2019 ◽  
Vol 195 ◽  
pp. 1212-1226 ◽  
Author(s):  
Jinane Charara ◽  
Nesreen Ghaddar ◽  
Kamel Ghali ◽  
Assaad Zoughaib ◽  
Marco Simonetti
Keyword(s):  
Liquid Desiccant ◽  
Displacement Ventilation ◽  
Humidity Control

Solar-powered compression-enhanced ejector air conditioner

Solar Energy ◽  
1993 ◽  
Vol 51 (3) ◽  
pp. 183-194 ◽  
Author(s):  
M. Sokolov ◽  
D. Hershgal
Keyword(s):  
Air Conditioner ◽  
Solar Powered

Solar-Assisted Liquid Desiccant Dehumidification Using Hollow-Fiber and Parallel-Plate Membrane Dehumidifiers: Comparative Analysis

2019 ◽  
Vol 141 (12) ◽  
Author(s):  
Haitham M. Bahaidaraha ◽  
Mohand H. Mohamed ◽  
Esmail M. A. Mokheimer
Keyword(s):  
Heat Exchanger ◽  
Latent Heat ◽  
Hollow Fiber ◽  
Parallel Plate ◽  
Cooling System ◽  
Thermal Capacity ◽  
Air Conditioner ◽  
Liquid Desiccant ◽  
Evaporative Cooling System ◽  
Mass Exchanger

In hot and humid climates, air conditioning is an energy-intensive process due to the latent heat load. A unitary air conditioner system is proposed, here, to reduce the latent heat of the humid air using a liquid desiccant followed by an evaporative cooling system. The heat liberated by the desiccant is removed by a solution to the solution heat exchanger. To restore the concentration of the liquid desiccant, the desiccant solution is regenerated by any low-temperature heat source such as solar energy. In order to make the system compact, the membrane heat exchanger is used for the dehumidifier and regenerator. This paper presents the numerical investigation of heat and mass transfer characteristics of a selected membrane dehumidifier under different climatic parameters. Membrane-based parallel-plate and hollow-fiber exchangers are used for this application. A parallel-plate heat-and-mass exchanger (contactor) is composed of a series of plate-type membrane sheets to form channels. On the other hand, hollow-fiber membranes are packed in a shell to form a shell-and-tube heat-and-mass exchanger. The two streams of both contactors are in a counter parallel flow, separated by micro-porous semi-permeable hydrophobic membranes. In this research, the equations governing the transport of heat and mass between the two streams along with the membrane effect in both contactors are solved numerically. The results are compared at different number-of-transfer units (NTU) on the airside and thermal capacity ratios. It is found that the hollow fiber is more efficient than the parallel plate.

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