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Development of a high-performance and small-sized air-conditioning system with an ice thermal storage device.

Author(s) : YASUDA H., WATANABE M., MATSUMURA K., et al.

Summary

An air-conditioning system with an ice thermal storage device has been investigated and developed for the use of small shops and stores. This system has operation modes of an ice thermal storage, cooling operations with/without an assist from stored ice and a heating operation. The HFC zeotropic refrigerant mixture R407C is adopted. The performance has been raised by introducing various kinds of measures such as a revised refrigeration cycle configuration for R407C, an inverter-driven scroll compressor with an AC and a DC motor, DC-driven fan motors, improved ice-making heat exchangers and others. The developed system has shown 24% higher cooling performance at the nominal condition and 40% lower value in terms of the annual electric power consumption as compared with a conventional system driven by a constant speed compressor with R22. In this development, system simulators consisting of a refrigeration cycle performance simulator and an ice-making process simulator have been developed and utilized to study various parameters for prototype systems.

Details

  • Original title: Development of a high-performance and small-sized air-conditioning system with an ice thermal storage device.
  • Record ID : 2006-2592
  • Languages: English
  • Source: Green breeze from Asia: frontiers of refrigerants, heat transfer and system.. ACRA-2002. Proceedings of the Asian conference on refrigeration and air conditioning.
  • Publication date: 2002/12/04

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