Research on the working medium of the absorption air-conditioning system with a new regeneration method. Issue 1 (February 2020)

• Record Type: Journal Article
• Authors: Li, YH; Cheng, F; Li, XW
• Is Part Of: IOP conference series. Volume 431:Issue 1(2020)
• Publication Date: 2020-02
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/431/1/012058
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: To be environmentally friendly and save energy, absorption air-conditioning system is a good attempt. However, plenty of heat waste in the regeneration limits its performance. For further application, the capacitive deionization (CDI) regeneration method has been proposed which works between the electrode pairs of the capacitor to achieve the interconversion between water and solution. Previous work shows the theoretical COP of the new system could reach up to 6 under certain conditions. Different absorbents have been calculated and experimented in this paper to find a most suitable absorbent to approach the highest possible COP. Different concentrations also has been considered. It is found that the COP of the CDI based system can attain 2 to 3. Experimental results agree well with theoretical results of the tendency of the system performance among different absorbents and different concentrations. There is some difference of the COP because the energy recovery rate in our experiment can not approach 50% which is calculated at 50% theoretically. In practical applications, the COP could be higher with energy recovery of CDI.