| Author: | Fung, Po-yee |
| Title: | Experimental study on phase change materials for temperature control in electric and electronic control boxes/plant rooms |
| Degree: | M.Eng. |
| Year: | 2006 |
| Subject: | Hong Kong Polytechnic University -- Dissertations. Energy conservation. Heat storage. Temperature control. Electronic apparatus and appliances -- Temperature control. |
| Department: | Department of Building Services Engineering |
| Pages: | xxi, 201 leaves : ill. (some col.) ; 30 cm. |
| Language: | English |
| Abstract: | Energy storage system plays a very important role in conserving available energy and improving its utilization, since many energy sources are intermittent in nature. Therefore, latent heat storage systems, phase change materials which provide high storage density, have become an attractive approach for many applications. This study aims to evaluate the feasibility of applying the phase change materials under the Hong Kong weather conditions and to compare the performance of phase change materials control systems against natural ventilation systems and heat pipe systems. The theoretical calculation was used to evaluate the performances of natural ventilation systems and heat pipe systems while the experiment was used to evaluate the performances of phase change materials temperature control systems taking into account of the theoretical calculation results. The findings indicated that natural ventilation systems are the best option for the temperature control of the box if the temperature inside the box can be fluctuant and the box does not require being totally enclosed. When the box must be totally enclosed, the phase change materials temperature control systems may be more effective than the heat pipe systems If the temperature gradient problem inside the box and freezing problem of the phase change materials have been solved by the installation of fans as the phase change materials can keep the air temperature inside the box nearly unchanged. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b1973668x.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 166.93 MB | Adobe PDF | View/Open |
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