Development of an electroosmotic pump-driven micro LiBr absorption heat pump system for controlling microclimate in protective clothing: feasibility ... the pump.: An article from: HVAC & R Research
Book Details
Author(s)J.S. Hu, Christopher Y.H. Chao
ISBN / ASINB002TZTDM0
ISBN-13978B002TZTDM0
AvailabilityAvailable for download now
Sales Rank11,541,249
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from HVAC & R Research, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on May 1, 2008. The length of the article is 9557 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: In this study, the feasibility of using a micro LiBr/water-based absorption heat pump system embedded in protective clothing used in hazardous environments is explored and the characteristics of various microelectromechanical-system-based components are reviewed. The pump is identified as a key part of optimizing the performance of the system. An electroosmotic (EO) micro pump is suggested due to its higher flow rate together with many other advantages. A fabrication process of the EO micro pump was developed and various prototypes of the EO pump were fabricated using standard microfabrication technology. Experiments were conducted to study the performance of the EO micro pump. The results show that a thinner pump offers a higher pressure capacity but a lower flow rate. Higher electric field strength results in an enhanced pressure capacity and flow rate. The flow rate increases at higher temperatures. The effect of the ionic concentration on pumping performance is weak even if the flow rate and pressure capacity are enhanced to some extent. Ethanol was also explored, and it was found that both the flow rate and the pressure are lower when water is used as the working liquid. The information from these results is valuable for use in the subsequent design of the overall micro heat pump system. A thermodynamic analysis using the EO pump information shows that the energy density of the micro heat pump system can be as high as 2.6 W/g and is feasible for use in protective clothing aiming at a total cooling load of about 300 W. The EO pump has been found to contribute about 45% of the total mass of the micro heat pump system.
Citation Details
Title: Development of an electroosmotic pump-driven micro LiBr absorption heat pump system for controlling microclimate in protective clothing: feasibility review and role of the pump.
Author: J.S. Hu
Publication:HVAC & R Research (Magazine/Journal)
Date: May 1, 2008
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 14 Issue: 3 Page: 467(21)
Distributed by Gale, a part of Cengage Learning
From the author: In this study, the feasibility of using a micro LiBr/water-based absorption heat pump system embedded in protective clothing used in hazardous environments is explored and the characteristics of various microelectromechanical-system-based components are reviewed. The pump is identified as a key part of optimizing the performance of the system. An electroosmotic (EO) micro pump is suggested due to its higher flow rate together with many other advantages. A fabrication process of the EO micro pump was developed and various prototypes of the EO pump were fabricated using standard microfabrication technology. Experiments were conducted to study the performance of the EO micro pump. The results show that a thinner pump offers a higher pressure capacity but a lower flow rate. Higher electric field strength results in an enhanced pressure capacity and flow rate. The flow rate increases at higher temperatures. The effect of the ionic concentration on pumping performance is weak even if the flow rate and pressure capacity are enhanced to some extent. Ethanol was also explored, and it was found that both the flow rate and the pressure are lower when water is used as the working liquid. The information from these results is valuable for use in the subsequent design of the overall micro heat pump system. A thermodynamic analysis using the EO pump information shows that the energy density of the micro heat pump system can be as high as 2.6 W/g and is feasible for use in protective clothing aiming at a total cooling load of about 300 W. The EO pump has been found to contribute about 45% of the total mass of the micro heat pump system.
Citation Details
Title: Development of an electroosmotic pump-driven micro LiBr absorption heat pump system for controlling microclimate in protective clothing: feasibility review and role of the pump.
Author: J.S. Hu
Publication:HVAC & R Research (Magazine/Journal)
Date: May 1, 2008
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 14 Issue: 3 Page: 467(21)
Distributed by Gale, a part of Cengage Learning
