Mechanical Engineering - Research Publications

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End date: 2004 × Author: Charters, William ×

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    An ice thermal storage computer model
    CHAICHANA, C ; CHARTERS, WWS ; AYE, L (Elsevier, 2001-12-01)
    In hot humid countries such as Thailand, air conditioning plant is installed in most commercial and industrial buildings. A conventional air conditioning system, which is normally operated when cooling is required, is the most favored option. Ice thermal storage on a large scale, used to provide a cool reservoir for use in peak periods, is however an attractive financial option for large buildings to supply coolness. There are two means of operating ice thermal storage systems, namely full storage and partial storage. In this paper, a computer model has been developed in order to compare energy use in conventional air cooling systems and ice thermal storage systems. Under Thailand electricity tariff rates, the results from the simulations show that the full ice thermal storage can save up to 55% of the electricity cost required for cooling per month when compared with the conventional system. It is also found that using full storage option can reduce the total energy consumption by 5% for the selected building.
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    Benefits of cool thermal storage in Thailand
    CHAICHANA, C ; CHARTERS, W ; AYE, L (RERIC, 2001-06-01)
    The use of thermal storage on a large to provide a cool reservoir for use in peak periods is an attractive financial option for large hotels, hospitals or office blocks. This enables the refrigeration plant to operate more effectively and to be completely or partially shut down during peak periods when the demand can be met in full or in part from the cool store. In this paper an overview is given of the power generation capacity and costing structure in Thailand and a typical load profile is presented to illustrate the advantages to be gained by shifting plant operation to off-peak periods. Specific load calculations have been utilized to demonstrate the cost savings possible by incorporation of such a cool thermal storage system into a traditional refrigeration and air conditioning plant for a major hotel complex.
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    Electrical and engine driven heat pumps for effective utilisation of renew-able energy resources
    Aye, L ; Charters, WWS (PERGAMON-ELSEVIER SCIENCE LTD, 2003-07)