Prediction of Ice Melting Process in a Dynamic-type Ice Storage System
Abstract
For an air-conditioning system with ice storage, a calculation model taking into account of the physical processes of ice melting is necessary to predict the performance of peak-shift of the electric power. We already investigated experimentally the characteristics of ice storage and melting processes in a dynamic-type ice storage system by using super-cooled water. In this paper, we have proposed the calculation model of ice melting process applicable to practical uses. This model has taken into account of mass and heat balances in the ice-rich layer, and estimated quantitatively the effects of porosity, permeating water velocity in the layer and side wall of an ice storage tank. It has been confirmed that the time histories of outlet water temperature calculated by this model have agreed well with those obtained in real-scaled ice storage tanks. Moreover, the thermohydraulic behavior in the ice-rich layer has been able to be analyzed qualitatively in the ice melting process.
- Publication:
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
- Pub Date:
- 2011
- Bibcode:
- 2011TRACE..15..237T
- Keywords:
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- Dynamic-type Ice Storage System;
- Ice Storage Tank;
- Ice Melting Process;
- Prediction