Application of thermal battery in the ice storage air-conditioning system as a subcooler
Resource
International Journal of Refrigeration 30 (2): 245-253
Journal
International Journal of Refrigeration
Journal Volume
30
Journal Issue
2
Pages
245-253
Date Issued
2007
Date
2007
Author(s)
Abstract
This article experimentally investigates the thermal performance of a thermal battery used in the ice storage air-conditioning system as a subcooler. The thermal battery utilizes the superior heat transfer characteristics of two-phase closed thermosyphon and eliminates the drawbacks found in convectional energy storage systems. Experimental investigations are first conducted to study the thermal behavior of thermal battery under different charge temperatures (-5 °C to -9 °C) in which water is used as the energy storage material. This study also examines the thermal performance of the subcooled ice storage air conditioner under different cooling loads. Experimental data of temperature variation of water, ice fraction, refrigerant mass flow rate and coefficient of performance (COP) are obtained. The results show that supercooling phenomenon appears in the water and it can be ended when the charge temperature is lower than -6 °C. The system gives 28% more cooling capacity and 8% higher COP by the contribution of the thermal battery used as a subcooler. © 2006 Elsevier Ltd and IIR.
Subjects
Air conditioning; Experiment; Ice tank; Subcooling; Thermal storage
SDGs
Other Subjects
Air conditioning; Heat convection; Heat transfer; Ice; Thermal conductivity; Coefficient of performance (COP); Ice storage; Ice tank; Thermal battery; Thermal storage; Electric batteries
Type
journal article
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