Effect of the Specification of Chilled and Hot Water Coil on Efficiency of Air Conditioning System with Water Thermal Storage

This study aims to examine the influence of the specification of heat exchange coils on the operation of air conditioning systems with water thermal storage. In this study, the influence of the specification of the air-handling unit coil on the operating condition of the water thermal storage system...

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Bibliographic Details
Published inASHRAE transactions Vol. 125; no. 1; pp. 376 - 383
Main Authors Kawaji, Tomoya, Yanagihara, Ryuji, Nakahara, Nobuo, Ninomiya, Hiroshi, Nakatsuka, Kazuki
Format Journal Article
LanguageEnglish
Published Atlanta American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE) 01.01.2019
American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc
Subjects
Air conditioners
Air conditioning
Air conditioning equipment
Coils
Cooling systems
Design of experiments
Efficiency
Heat
Heat exchange
Specifications
Storage tanks
Temperature gradients
Thermal energy
Thermal storage
Water
Water temperature
Japan
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Summary:This study aims to examine the influence of the specification of heat exchange coils on the operation of air conditioning systems with water thermal storage. In this study, the influence of the specification of the air-handling unit coil on the operating condition of the water thermal storage system is examined using a simulation tool. The results indicate the importance of properly maintaining the relationship between the thermal storage tank capacity and secondary side temperature difference in both design and operation stages. Furthermore, this study shows that significant attention should be paid to the input of coil specifications when using the simulation tool.
ISSN:0001-2505