• Proceedings of the KSME Conference
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• 2000.04b
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• pp.193-198
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• 2000

For an inverter-driven compressor, the discharge temperature increased with a rise of frequency, Therefore, it is necessary to control the discharge temperature at high frequencies in order to obtain system reliability and efficiency. This paper describes the effects of liquid injection system on the performance of an inverter-driven scroll compressor. Experiments were performed at ASHRAE-T conditions. Frequency was altered from 45 to 105Hz. As results of the present work, the refrigerant discharge temperature fur the injection system was dropped approximately $10{\sim}20^{\circ}C$ as compared to those for the non-injection system. The COP of the compressor was improved approximately $0.8{\sim}9.3%$ at high frequencies(75, 90, and 105 Hz).

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.22 no.3
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• pp.103-106
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• 2016

This survey was performed by Kasetsart University Department of Packaging and Materials Technology on Food Packaging Industry in Thailand, was to conduct on the status and trends of food packaging industry to obtain the information on the plastic of packaging materials in food packaging in Thailand. The survey conducted by field visits, questionnaires, interviews and personal communication as well as published data from different sources. The ration of plastic consumption among the industries, packaging is showed 49%, textile 15% and construction 11% respectively. Numbers of company among packaging industry, film processing company is 503, injection molding is 231, blow molding is 216. Production volume of PP, HDPE, LLDPE and LDPE is 1,950 mil. ton, 1,920 mil. ton, 1,150 mil. ton and 685 mil. ton, respectively. Import of plastic 16,668 mil. baht and export is 33,778 mil. baht. Plastic consumption is plastic bottle and flexible pouch, mainly being used in beverage industry. The past decade as it has been replaced by flexible pouches and aseptic cartons in Thailand.