Comparative study of R134a and R744 driven solar assisted heat pump systems for different applications

Baradey, Yehya and Hawlader, Mohammad Nurul Alam and Ismail, Ahmad Faris and Hrairi, Meftah (2016) Comparative study of R134a and R744 driven solar assisted heat pump systems for different applications. In: 3rd International Conference on Mechanical, Automotive and Aerospace Engineering, ICMAAE 2016, 25-27 July 2016, Kuala Lumpur; Malaysia.

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Abstract

A solar assisted heat pump (SAHP) system is considered in this study where space cooling, water heating, drying and desalination are carried out using solar energy, ambient energy and the waste heat available from air conditioning system. The integration of different applications with SAHP system leads to many benefits, but the most significant is the energy conservation issue where the prices of fossil fuels are increasing. In recent years, researches have been conducted worldwide to improve the performance of these systems. These systems usually use synthetic refrigerant, such as R134a, which contributes to many atmospheric problems. Currently, embracing natural refrigerants, such as, carbon dioxide in SAHP has become a trend specifically after Kyoto agreement to reduce global warming and improve the performance of SAHP systems. In this paper, comparative study using R134a and R744 in SAHP systems have been considered. The comparison includes the most significant results of previous work relevant to this issue, and the thermo physical properties of the two refrigerants when used in SAHP.

Item Type:	Conference or Workshop Item (Invited Papers)
Additional Information:	4980/56894
Uncontrolled Keywords:	Comparative study, driven solar, assisted heat pump systems, different applications
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ807 Renewable energy sources
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. Meftah Hrairi
Date Deposited:	17 May 2017 15:51
Last Modified:	28 Dec 2017 20:18
URI:	http://irep.iium.edu.my/id/eprint/56894

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