• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.27 no.6
• /
• pp.513-522
• /
• 1998

우리나라의 여름 기후는 고온 다습한 특징을 갖고 있다. 고온 다습한 지역에서는 습도가 쾌적성을 결정하는데 중요한 요소가 되기 때문에, 습도가 높으면 온도가 그다지 높지 않더라도 쉽게 무더위를 느낀다. 이러한 계절적 특성을 없애 쾌적한 생활을 영위하기 위하여 생활의 질적 향상과 더불어 공조장치의 수요가 매년 두드러지게 증가하고 있다. 특히, 실내의 경우에는 공조장치 중 대표적인 에어컨(air conditioner)으로 냉방을 행함으로써 고온 다습한 여름철의 거주공간을 개선하고 있다. 그러나 고온 다습한 환경하에서의 과다한 에어컨 사용은 인체의 온열 환경적 측면에서 오히려 불리하다. 왜냐 하면, 에어컨에서는 여름철에 잠열(latent heat)을 고려해야 함에도 불구하고 단지 현열비(sensible heat factor)로 취출온도를 결정하고 있기 때문이다. 그 결과, 실내가 과다하게 냉각되어 재실자에게 불쾌감은 물론, 심지어 냉방병도 초래할 수가 있다.

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

• Proceedings of the SAREK Conference
• /
• 2007.06a
• /
• pp.167-167
• /
• 2007

• Proceedings of the SAREK Conference
• /
• 2007.06a
• /
• pp.165-165
• /
• 2007

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.35 no.9
• /
• pp.19-29
• /
• 2006

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.40 no.5
• /
• pp.25-33
• /
• 2011

제습냉방기술을 이용한 태양열 냉방시스템 개발 현황을 소개한다.

• Applied Chemistry for Engineering
• /
• v.21 no.2
• /
• pp.169-173
• /
• 2010

Many salts have the ability to attract and remove water vapor from the surrounding environment. The ability of each salt to remove water vapor is based on the flow rate and temperature of air in surrounding. The objective of this study was toinvestigate the humid control characteristics in air-water system by using a desiccants. The aim is to asses the influence of three parameters on the humid control process which are air volume rate, air temperature and desiccant amount. Humidity control materials which consist of K (potassium) or Na (sodium) have been synthesized by the aqueous process. The humidity control properties of materials have been also investigated. Experiment results are as following. Thermal characteristics of desiccants showed similar properties regardless of processing condition. The experiments were examined by using artificial air-water system (humidity : 70~93%, air volume rate : $0.22{\sim}0.69m^3/s$). The results showed that the Na-type desiccant was an effective material. It was found that dew point increased with air volume rate, and the humidity change in humid control process was depended on desiccants amount.

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

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.38 no.7
• /
• pp.571-579
• /
• 2014

A series of field tests on hybrid desiccant cooling systems were conducted in July-August, 2013. The temperature and humidity of the supply and return air, power, and heat consumption were monitored and transferred in real time through the Internet. The performance parameters of the cooling system, namely, cooling capacity and COP (coefficient of performance), were evaluated from the measured data and their variations under outdoor conditions was analyzed. It was found that with increase in the outdoor temperature, the total energy decreases and cooling capacity increases whereas the latter decreases with increase in the outdoor humidity. The COP was also found to increase with the increase in outdoor temperature.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.18 no.3
• /
• pp.287-293
• /
• 2012

This paper has dealt with the probability of oyster shell desiccant cooling system driven by renewable energy of photo-voltaic effect. For this, fundamental experiments have been carried out focusing on the observation of dehumidifying effect of oyster shell and peltier elements used for air conditioning system. From this study, it is found that oyster shell has sufficient probability for using as a desiccant in air-conditioning system. Moreover, the heat releasing device(peltier element) can be used with direct current from PV cells so the system can be operated with high efficiency. As a result, the absolute humidity in a test chamber was reasonably controlled by oyster shell and peltier elements. Also the photo-voltaic energy from sun was enough for running power of this system.