• 월간 기계설비
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• s.100
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• pp.56-61
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• 1998

• Journal of the Institute of Convergence Signal Processing
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• v.21 no.4
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• pp.177-182
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• 2020

Interest in heat pumps is increasing as an eco-friendly and energy-saving heating method. In particular, in order to develop a heat pump capable of heating in a low-temperature area, research to prevent frost on the surface of the outdoor unit is increasing. In other words, when heating through a heat pump in a low-temperature area, a frost layer is formed on the surface of the outdoor unit, which lowers the heat transfer performance, thereby reducing the heating capacity. Therefore, in this study, an adsorption-type dehumidification system is attached to remove the moisture vapor of the air into the outdoor unit of the heat pump. It is believed that this study can suggest the most effective dehumidification method in low temperature regions. In addition, it is expected that a heat pump with high energy efficiency can be developed by attaching an adsorption dehumidifying system to the front of the outdoor unit of the heat pump.

• Journal of the Korean Institute of Gas
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• v.22 no.3
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• pp.32-37
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• 2018

Recently, the distributed power generation market using natural gas is expected to expand gradually according to the government's future energy conversion policy. Distributed power generation means small power generation source near the power demand site, which has the advantage of reducing the construction costs of the transmission and distribution infrastructure, operating cost and power loss. A typical example of distributed generation using natural gas is the trigeneration system. In this study, we conducted a basic study on the performance analysis of trigeneration desiccant system for dehumidifying / cooling / heating in the air conditioner room by using the cold and engine waste heat energy generated in the trigeneration system. It shows that the system efficiency increases and the energy consumption decreases as the temperature difference between the inlet and outlet of the trigeneration system increases compared with the general air conditioning system.

• 발명특허
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• v.29 no.5 s.335
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• pp.51-54
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• 2004

• 월간 기계설비
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• s.37
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• pp.86-89
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• 1993

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.27 no.6
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• pp.533-540
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• 1998

최근에 국내외 에너지 이용 효율성 증대 문제, CFCs등으로 인한 오존층 파괴문제, $CO_2$ 등으로 인한 지구온난화 문제, 실내공기질(IAQ)과 관련된 건물 환기량 증대요구로 인한 건물용 공조시스템(HVAC)의 설계변경 문제 등으로 인해 다양한 종류의 대체 냉방기기가 연구되어 오고 있다. 현재 미국에서는 ASHRAE Standard 62-1989에 의해 실내거주자의 필요한 IAQ와 쾌적함을 유지하기 위해 환기량을 기존의 경우보다 약 3배 이상이 되도록 권장하고 있고 또한 대다수의 미국 주 정부에서 건물설계에 관련된 조례로 ASHRAE Standard 62-1989를 적용하고 있다. 따라서 빌딩공조 설비관계자들은 늘어난 환기 요구량에 따라 잠열냉방용량이 크게 증대되므로 이를 처리하기 위한 새로운 냉방공조기기 시스템기술에 대해 관심이 증대하고 있다. 이에 따라 건조제를 x이용한 냉방 및 제습 시스템이 대체 냉방시스템 또는 기존의 냉방 시스템과 더불어 잠열부하를 처리하는 복합 시스템으로 최근에 다시 상당한 주목을 받고 있다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.43 no.4
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• pp.52-62
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• 2014

• Proceedings of the SAREK Conference
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• 2004.06a
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• pp.24-24
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• 2004

• Proceedings of the SAREK Conference
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• 2004.06a
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• pp.29-29
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• 2004

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.30 no.1
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• pp.10-16
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• 2018

The climate of summer in Korea is quite hot and humid. Many studies have been carried out to reduce the energy required for operating a dehumidifier. The dehumidifier is mainly connected to the cooling system since it operates in the summer. Conventional dehumidification methods often require additional cooling and energy for dehumidification. In this study, a system for increasing the efficiency by applying a membrane was analyzed. Its energy saving effect was analyzed when it was applied to residential buildings. Economic efficiency was also evaluated. As a result of this study, 9.0% energy savings were achieved for residential buildings. The investment recovery period was 28.9 years. Such long investment recovery period was because the initial investment cost was excessive and annual energy saving only appeared in the summer.