• 대한설비공학회지:설비저널
• /
• 제39권12호
• /
• pp.43-49
• /
• 2010

• 대한설비공학회지:설비저널
• /
• 제27권4호
• /
• pp.347-357
• /
• 1998

• 대한설비공학회지:설비저널
• /
• 제39권10호
• /
• pp.46-51
• /
• 2010

• 대한설비공학회지:설비저널
• /
• 제38권6호
• /
• pp.4-9
• /
• 2009

• 대한설비공학회지:설비저널
• /
• 제27권4호
• /
• pp.339-346
• /
• 1998

• 대한설비공학회지:설비저널
• /
• 제27권4호
• /
• pp.369-377
• /
• 1998

• 대한설비공학회지:설비저널
• /
• 제26권4호
• /
• pp.241-250
• /
• 1997

• 설비공학논문집
• /
• 제26권1호
• /
• pp.26-31
• /
• 2014

This study looks into changing building energy use by application of phase change material (PCM). PCM does not need extra energy for operation and is used for reducing building energy use and, CO2 output by displaying semi-permanent effects after installation. It also is able to avoid the maximum electric power time-zone by inducing a time lag phenomenon of cooling and heating loads with high thermal capacity using latent heat. To verify the efficiency of blinds and PCM, tests about the PCM operation mechanism using air conditioning machinery and nocturnal panel cooling were done. In the test results of the case using PCM installation, a $45^{\circ}$ blind angle with machinery air conditioning and nocturnal panel cooling at the same time shows a 22 percent energy saving effect against general space. The test results of each case were compared and analyzed based on the blind and window opening settings. Finally, the energy reduction of existing buildings using PCM application was reviewed based on the final measurement results.

• 설비공학논문집
• /
• 제21권12호
• /
• pp.688-694
• /
• 2009

With the increase in the demand for sustainable and environmentally-friendly development, Green Building Certification System came into force in 2002, Evaluation parts of Green Building Certification System are divided into land use and transportation, energy, ecological environment, and indoor environment. Alloted point for the part of energy is larger than other part, thus we can say that this part is very important to increase the green building performance. This study aims to analyze the present condition of design and construction for the part of energy in the certificated green school building. Total 40 certificated school buildings were selected and average scoring rate of each item was evaluated. Key particular to be considered were suggested to improve the item of energy consumption.

• International Journal of Air-Conditioning and Refrigeration
• /
• 제15권4호
• /
• pp.182-190
• /
• 2007

Refrigeration and air-conditioning equipments are indispensable products in this civilized society. However, discharged refrigerants used in the equipments and exhausted carbon dioxide to drive the refrigeration and air-conditioning equipments are related to serious environmental problems and energy problems. Especially, the destroyed ozonosphere by the discharged refrigerants and the increased normal temperature by carbon dioxide and fluorocarbon refrigerants (green house gases) are sounded as serious global problems. For alleviating these problems, environmental-friendly refrigeration and air-conditioning equipments must be developed and will spread soon. To develop new equipment, a suitable refrigerant for each usage must be presented. In this paper, the current state of refrigerants was introduced. And, thermophysical properties of the refrigerants were introduced briefly. From the properties, the refrigerants and refrigeration cycles are promising to be used in the future, were proposed