Date of Award

Spring 1982

Document Type

Thesis

Department

Mechanical & Aerospace Engineering

Program/Concentration

Mechanical Engineering

Committee Director

S. K. Chaturvedi

Committee Member

A. S. Roberts

Committee Member

G. L. Goglia

Call Number for Print

Special Collections; LD4331.E56S45

Abstract

A direct expansion solar-assisted heat pump, which uses economical bare solar collectors as evaporator, is designed and operated. The experimental results indicate that marked improvement in thermal performance results if the collector/ evaporator temperature is maintained at o0c to 10°c above the ambient temperature. During the course of this investigation, the system thermal performance is determined under various ambient and operating conditions by measuring the incident solar energy flux, refrigerant flow rate, temperature and pressure at various locations in the system. The heat pump coefficient of thermal performance and solar collector efficiency ranging from 2.0 to 3.0 and 40% to 70% respectively have been achieved for widely ranging ambient and operating conditions. The experimental results indicate that the proposed system offers significant advantages in terms of superior thermal performance when compared with results gotten by replacing the solar evaporator with a standard outdoor fan coil unit. A novel, dual-source (hybrid) direct expansion solar-assisted heat pump is proposed that integrates the fan coil and solar collector units into one component.

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In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

DOI

10.25777/y5sh-0t64

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