Numerical Analysis of a PV/Microchannel Integrated CO2 Direct-expansion Heat Pump Water Heater

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" Numerical Analysis of a PV/Microchannel Integrated CO2 Direct-expansion Heat Pump Water Heater "
Rony, Mohammad Rajib Uddin Gladen, Adam

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1105770
Doc. No	:	TLpq2323127807
Main Entry	:	Gladen, Adam
	:	Rony, Mohammad Rajib Uddin
Title & Author	:	Numerical Analysis of a PV/Microchannel Integrated CO2 Direct-expansion Heat Pump Water Heater\ Rony, Mohammad Rajib UddinGladen, Adam
College	:	North Dakota State University
Date	:	2019
student score	:	2019
Degree	:	M.S.
Page No	:	117
Abstract	:	A steady-state numerical model of a PV/microchannel integrated direct-expansion CO2 heat pump (PV-DXHP) water heater is developed, validated, and analyzed in the present study. To accomplish the objectives, a numerical model of a microchannel evaporator integrated into a CO2 PV DXHP is developed and validated. The effects of evaporator operating parameters on the heat absorption and pressure drop are analyzed. Utilizing the evaporator model, the PV-DXHP model is developed, and the baseline values of the heat pump operating parameters are determined from the evaporator parametric study. The PV-DXHP demonstrates high water heating capability, while maintaining a reasonably high COP. The COP has the highest dependency on the CO2 mass flow rate, while the water outlet temperature has the highest dependency on the water mass flow rate. The results are highly promising and indicate the system has potential to help meet the energy requirements for residential and industrial water heating demands.
Subject	:	Energy
	:	Engineering