Thermal performance of a variable capacity direct expansion solar-assisted heat pump

• Published in: Energy conversion and management Vol. 39; no. 3; pp. 181 - 191
• Main Authors: Chaturvedi, S.K., Chen, D.T., Kheireddine, A.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.02.1998; Elsevier
• Subjects: Applied sciences; Bare collectors; Capacity modulation; Devices using thermal energy; Direct expansion; Energy; Energy. Thermal use of fuels; Equipments, installations and applications; Exact sciences and technology; Heat pumps; Inverters; Natural energy; Solar energy; Solar heat pump; Solar thermal conversion; Capacity modulation; Bare collectors; Inverters; Solar heat pump; Direct expansion; Heat pump; Solar energy; Running; Hot water production; Control systems; Thermodynamic analysis; Experimental study; Performance

A variable capacity direct expansion solar-assisted heat pump system is developed and operated for domestic hot water application. The proposed system employs a bare solar collector which also acts as the system evaporator. A variable frequency drive modulates the compressor speed to maintain a prop...