• Journal of the Korean Society for Geothermal and Hydrothermal Energy
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• v.9 no.1
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• pp.8-14
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• 2013

HVAC&R systems are the most energy consuming building services representing approximately half of the final energy use in the building sector. Despite their significant energy use, there is a lack of a consistent and homogeneous framework to efficiently guide research, mainly due to the complexity and variety of HVAC&R systems but also to insufficient rigour in their energy analysis. This research reviews energy consumption of HVAC&R systems with the aim of establishing a common idea for the analysis of energy efficiency. The paper focuses on energy flow of the HVAC&R which include air-conditioning, transport and heat generation system for low-energy buildings.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.31 no.1
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• pp.9-14
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• 2002

산업의 발전에 따른 도시화의 영향으로 대도시에서는 가용공간을 확보하기 위하여 건물의 고층화와 지하공간의 개발이 활발하게 이루어지고 있다. 최근 증가추세에 있는 초고층주상복합건물, 초고층아파트는 건물의 높이가 증가함으로 인하여 건축공사비의 증가는 물론 설비적인 측면에서는 저층부의 수압이 상승 하여 높은 수압과 수격작용(water hammer)에 대한 배관 및 기기의 내압강도와 안전대책이 요구된다. 또한 건물의 초고층화로 인하여 열원에서 공조기까지, 공조기에서 실내기기까지의 수직거리 (vertical distance)가 길어지게 되어 연장된 공조덕트 및 배관 의 길이로 인해 반송동력비의 상승에도 큰 영향을 미치게된다. 이러한 문제점을 해결하기 위하여 기기 및 재료의 선정시 내압을 고려하거나 기기의 적정배치와 조닝(zoning)을 통해 상기의 문제점을 해결하는 방법을 적극 채용하고 있다. 하지만 보다 근본적인 문제해결 방법으로 건물의 층고저감에 의한 건축공사비 및 연 간운전비의 절감을 통한 건물에서의 소비에너지량 감소로 부존자원이 부족한 우리나라의 에너지수급정책에 기여하여야 할 것이다. 본 고에서는 건축물의 층고저감 효과를 얻을 수 있는 공조시스템에 대해 전반적으로 기술하고자 한다.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.26 no.3
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• pp.115-121
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• 2014

HVAC&R system costs can often be one of the most expensive components, representing approximately 15% of the total construction cost for office buildings. Despite their significant importance, there is a lack of a consistent and homogeneous framework to approximate the estimate research. This research deals with the prediction methodology of HVAC&R system cost with the aim of establishing a common idea for the analysis of the construction cost estimate. Our approach deals with the concept of an HVAC&R set that is composed of subsystems. The matrix combination analysis is examined, and total 960 HVAC&R system cost estimation can be implemented to large scale office buildings.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.25 no.7
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• pp.363-370
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• 2013

HVAC&R systems are the most energy consuming building services, representing approximately half of the final energy use in the building sector. Despite their significant energy use, there is a lack of a consistent and homogeneous framework to efficiently guide research. This research is about the energy consumptions of HVAC&R systems, with the aim of establishing a common idea for the analysis of building energy efficiency. Our approach deals with the concept of an HVAC&R set that is composed of subsystems. A matrix combination evaluation is examined, and a total of 960 sets can be implemented in a large scale office building. A method as a tool for energy evaluations of HVAC&R systems, and HEET as a energy simulation program, were developed.