• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.11a
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• pp.95-99
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• 1999

자연에너지와 전기에너지를 조합하여 냉방과 난방을 수행할 수 있는 방법중의 하나로 히트펌프 이용기술이 있으며, 국내의 경우 히트펌프는 주로 냉방 또는 냉동을 목적으로 이용되고 있으나, 1980년 이후 전기가 풍부한 경제선진국을 중심으로 난방 또는 냉난방겸용의 히트펌프가 개발되어 주택, 빌딩, 온실 등의 공조시스템에 이용되고 있다. (중략)

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.12 no.2
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• pp.101-113
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• 1983

논문은 물을 저장물질로 사용하는 공간난방에 있어서의 seasonal storage의 몇 가지 중요한 문제연구하고 있다. 집열기 면적과 저장체적 그리고 시스템 성능간의 관계를 transient simulation program(TRNSYS)을 사용하여 조사하였다. 여기서 seasonal storage의 가장 일어나기 쉬운 상태가 나타내어지는데 seasonal storage system의 설계에 특히 역점을 두고 있다. 이러한 설계방법은 몇 일간에서 seasonal storage에 이르는 seasonal pacity (저장용량)에 대하여 적용되어진다. 비용과 관련하여 이러한 설계방법은 seasonal storage system 경제성 (economic viability)을 추정하는데 유용할 것이다. 또한 시스템 설계에서 부하 열기의 크기 탱크단열 집열기 경사 매년 기후변화의 중요성이 조사되고 있다.

• Journal of the Korean Society for Geothermal and Hydrothermal Energy
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• v.7 no.1
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• pp.38-44
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• 2011

In this study, heating performance and energy consumption characteristics with control strategies for central heating system were researched by the simulation. The simulation analysis is made by TRNSYS ver. 15 with the actual data. The parametric study on proportional factor, control time interval and outdoor air temperatures changes were done to compare control characteristics and energy performance, respectively. As a result, the simulation results with various parameter changes show good heating performance and energy saving.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.17 no.1
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• pp.88-93
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• 2005

In this study, the operational characteristics on heating performance and energy consumption for intermittent hot water heating system in apartment buildings were research by simulation. The effects of apartment inlet hot water temperature and operation time per day on energy consumption and indoor thermal environment are investigated. The strategy of energy saving and thermal environment improvement is suggested in comparison with the existing ones.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.24 no.12
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• pp.830-836
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• 2012

In this study, the effects of heating control methods on heating control performance and energy consumption in the floor radiant heating control system of residential apartments were research by computer simulation. A general regression neural network(GRNN) control method for reducing indoor temperature overshoot and saving energy in floor radiant heating system is suggested. The GRNN control method shows good responses in comparison with the conventional and outdoor reset control methods for improving indoor thermal environment and reducing energy consumption.

• Journal of Energy Engineering
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• v.28 no.1
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• pp.22-29
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• 2019

A heat pump system using wasted heat from thermal effluent to supply the heating energy can reduce energy consumption and emissions of greenhouse gases by greenhouse facilities nearby. The Jeju National University consortium constructed a heat pump system using the thermal effluent from the Jeju thermal power plant of KOMIPO to provide with cool or hot water to greenhouse facilities located 3 km from the power station. In this paper, the system configuration of the heat pump system was summarized, and the results of operations for demonstration of a heating performance carried out during the winter season in 2018 were investigated. The preoperational tests proved that the water temperature drop through the pipeline transporting extracted heat was less than $2^{\circ}C$. The COP (coefficient of performance) of the heat pump was higher than 4.0, and hot water with the maximum temperature of $50^{\circ}C$ could be supplied to greenhouse facilities by utilizing wasted heat from thermal effluent.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.1
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• pp.454-459
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• 2017

In this study, a thermal system was designed using a 3-way valve and PTC attached to a solar module. This design could help solve the problem of rising fossil fuel costs caused by limited reserves and environmental problems resulting from fossil fuel use. The thermal system is a hot-air and heating control system composed of a temperature sensor part, mode setting part (for hot air and heating modes), supply part, and thermal system control part. The temperature sensor part has piping and an indoor temperature display, and the temperature setting part has multiple monitoring functions. The mode setting part switches between hot air and heating modes and can be used to set the temperature. The thermal system control part performs functions such as PTC control and temperature setting, PTC day and night and time selection, hot air and heating control, and three-way valve selection. The results verify that the system operates with stable response speeds of $680{\mu}s$ in the temperature sensor part, $700{\mu}s$ in the mode setting part, and $610{\mu}s$ in the thermal system control part.

• 한국신재생에너지학회:학술대회논문집
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• 2005.11a
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• pp.353-362
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• 2005

태양열시스템은 하절기에 급탕과 난방 부하가 적거나, 거의 없어 시스템의 과열 문제가 야기 될 수 있다. 이를 해결하는 방안 중에 하나로 흡수식 냉방시스템을 이용하여 하절기 잉여열원을 활용하여 냉방하는 방법이 대두되고 있다. 태양열 냉방시스템은 전기에너지를 대체하는 효과 뿐 아니라 태양열 연간 이용 효율 극대화에도 크게 기여 할 수 있다. 본 고에서는 국내 기술로 최초로 개발 실용화된 중온용 단일 진공관형 태양열 집열기와 1중 효용 흡수식 냉방기를 이용하여 실증연구를 계획하였다. 태양열 냉방 실증을 위하여 단일 진공관형 태양열 집열기 집열면적 200m2, 축열조(태양열, 급탕, 냉수), 10RT급 냉방기, 냉각탑, 보조 보일러, 원격 제어 및 모니터링 등이 계획 되었다. 실증시험 중간 결과 태양열 냉방시스템은 하절기 맑은 날 하루 동안 약 5 - 6시간 안정적으로 가동 되었으며, 앞으로 온수급탕, 난방 시험을 거쳐 시스템 성능 및 경제성 평가를 통하여 유용성, 안정성 및 신뢰성이 검증 될 계획이다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.33 no.10
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• pp.17-22
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• 2004

태양열 시스템의 적용 뷴야를 선정하는 데 고려되어야 할 사항과 적정 적용 분야 그리고 최근에 독일을 중심으로 보급 확산되고 있는 태양열 지역 난방 시스템에 대하여 언급하였다.

• 열병합발전
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• s.19
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• pp.12-20
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• 2001