• Proceedings of the SAREK Conference
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• 2007.11a
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• pp.466-473
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• 2007

The comparison for the performance of heating systems, district heating and separate heating and power, is carried out in terms of energy consumption and environment on the basis of real operating data. The efficiency of boiler and the heat loss within the housing are assumed with reasonable manner due to the lack of reliable data regarding those quantities. The assessment for the established criteria of previous studies is performed and the new criteria for the analysis is proposed. It is shown that the district heating system is superior to the separate heating and power system from the point of view of reduction of energy use and environment improvement. The sensitivity study for those quantities with uncertainty such as the boiler efficiency and heat loss within the housing is carried out also and the reasons for the analysis results are discussed in detail.

• Journal of Climate Change Research
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• v.4 no.2
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• pp.141-158
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• 2013

In this study, the projection of future heating and cooling degree days (HDDs and CDDs) has been conducted over South Korea for the period 1996~2005 with 2046~2055 and 2091~2100, using CCSM3 and MM5 simulations driven by the six IPCC SRES emission scenarios (A2, A1B, A1FI, A1T, B1, and B2). Annual mean surface air temperature increases by $1.2{\sim}3.4^{\circ}C$ at the end of the 21st century comparing to the present-day (1996~2005) in South Korea. HDDs decrease by 8~25% and CDDs increase up to 242~1,448% with corresponding changes in temperature. These increases and decreases also change the duration of HDDs and CDDs. HDDs duration decreases by 1 month, while the expansion of CDDs duration is much longer than 2 months. Thus, projected future HDDs and CDDs changes appear that cooling energy demand in summer season would increase and heating energy demand in winter would decrease in the future. Especially, these remarkable changes would be obvious at high mountain area, Gangwon-do and at south area, Jeju island. In the sense of future energy supply and policy, electrical energy for cooling in summer could be getting much more its importance rather than fossil energy used for heating in winter.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.05a
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• pp.104-108
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• 2001

복사에 의한 냉난방은, 장시간 재실하는 방이나 소음, 기류에 민감한 장소에 적합하고 에너지 절약면에서도 유효한 냉난방 방식이라고 알려져 있다. 일반적으로 널리 알려져 있는 바닥난방은 실온의 수직분포가 균일함으로서 인체에 쾌적한 난방방식으로 알려져 있다. 이것에 비해, 바닥의외의 벽, 천장을 활용한 냉난방설비의 쾌적성에 대해서는 아직 충분히 검토되고 잇지 않다. 따라서 본 연구는 물순환식 복사 냉난방장치를 이용하여 겨울철의 천장복사난방이 인체에 미치는 생리적, 심리적영향을 밝히고 복사난방의 유용성에 대해서 검토하는 것을 목적으로 한다. 실험은 일본 나라여자대학 인공기후실을 이용하였고, 실험조건은 실온 18$^{\circ}C$, 21$^{\circ}C$, 24$^{\circ}C$ 천장온도 $25^{\circ}C$, 3$0^{\circ}C$, 35$^{\circ}C$의 조건을 조합하여 7조건으로 설정하였다. 또, 상대 습도 40%, 기류속도 0.1m/s 이하로 일정하게 유지시켰다. 생리적반응으로는 피부온14점과 직장온을 30초 간격으로 측정하였고, 혈압, 심박수, 체중, 체지방율을 측정하고 심리적반응으로는 온열감, 쾌적감등의 항목을 10분간격으로 측정하였다.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2003.04a
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• pp.38-43
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• 2003

우리나라의 시설재배면적은 2001년 현재 52,135ha이고 이중가온 재배면적이 12,710ha로 전체 시설재배면적의 25%에 해당하며 또한 난방비용이 경영비 중 차지하는 비중이 시설재배 선진국의 15%에 비하여 25-30%을 차지하고 있어 난방비의 비중이 높다. 온풍난방시 시설내 에너지 절감을 위한 국내의 연구는 주로 보온, 난방기의 위치 및 Duct의 토출구 간격 및 직경(Kim 등, 1994), 난방배관 구조개선(Kwon 등, 1992)등으로 연구되어 왔다. (중략)

• Journal of Bio-Environment Control
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• v.25 no.4
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• pp.225-231
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• 2016

Glasshouse heating package technologies to improve energy usage efficiency in winter were developed. Heating package was composed of the ground water source heat pump with heating capacity of 105kW, the aluminum multi-layer thermal curtain with six layers of different materials and the root zone local heater with XL pipes of ${\phi}20mm$. Venlo type glasshouse($461m^2$) with the heating package was compared with the same type and area control glasshouse with the light oil boiler, the usual non-woven fabric thermal curtain with respect to the glasshouse inside temperature, relative humidity, crop growth, and heating energy consumption. The results of test in paprika cultivation glasshouses showed that the air temperature inside glasshouse with aluminum multi-layer thermal curtain was maintained $2.2^{\circ}C$ higher than that of control glasshouse in un-heating night time and the temperature in bed with root zone local heating was $4.7^{\circ}C$ higher than that in bed without local heating. Average heating coefficient of performance(COP) of the ground water source heat pump used in paprika cultivation was 3.7 and the glasshouse inside temperature was maintained at $21^{\circ}C$ of heating set up temperature. The heating energy consumptions per 10a were measured at 14,071L of light oil and 364kWh of electric power for the control glasshouse and 35,082kWh for the glasshouse applied heating package. As results, the heating cost of the glasshouse applied heating package was 87 percent lower than that of control glasshouse. The growths of paprika in glasshouses of control and applied heating package did not show any significant difference.

• Journal of Energy Engineering
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• v.22 no.2
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• pp.83-89
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• 2013

Energy consumption is closely related to our lives. As Korea has four seasons, heating and cooling system is considered as essential facilities for the residential buildings. Accordingly, the government has continuously strengthened the design criteria to improve energy for new and existing building to save energy. The most important factor in the energy efficiency analysis for apartment is the heat transmission coefficient, and the value is significantly different as the heating energy amount is greatly different according to the window area ratio versus facade area ratio. Therefore, it is time to conduct continuous set-up for goal to enhance efficiency and restriction on window area ratio versus facade area ratio.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.29 no.1
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• pp.57-67
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• 2000

최근 국민소득수준의 향상을 따라 여름철 전력 수요가 폭증하므로 전력안정 공급을 위한 특별 대책이 필요한 실정이고 환경적인 측면이나 수용가 입장에서 만족스러운 새로운 냉·난방, 전기 공급시스템의 개발·적용이 필요하다. 선진국의 경우, 소규모의 집단에너지 공급이 주류를 이루고 있으며 특히 소규모 열병합 발전시 생산되는 전기, 지역난방열 이외에 냉방에 필요한 냉수를 중앙열원에서 동빌딩을 중심으로하는 구역형 집단에너지 시스템(Community Energy Supply System)등 소규모지역 난냉방 공급방식이 활성화되어 있으므로, 우리나라에서도 냉방/난방/전기부하 패턴 및 하절기 피크부하 경감에 대한 기여도 등을 고려한 경제성있는 최적시스템 구성이 가능한지 검토할 필요가 있다. 소규모 집단에너지사업은 대규모 사업과는 달리 적정 수요예측이 가능하므로 효율적인 초기 투자가 이루어질 수 있으며, 상업용 및 사업용 빌딩 등을 중심으로 부하밀도가 높은 구역을 대상으로 하명서 해당 부하패턴에 적합한 효율적인 시스템의 구성을 통해 수익성이 확보된다면 국가 에너지절약 및 한전의 여름철 전력 피크부하 경감, 대기 환경공해 감소, 도심 도시미관 향상 등의 사업효과가 기대된다. 본문에서는 이러한 소규모 집단에너지시스템 개요 및 국내외 공급 현황, 국내 적용환경, 적용 가능에너지 검토 열원시스템의 기본방향 등에 대하여 언급하고자 한다.

• The Korea Energy Engineers Association Reports
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• no.29
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• pp.1-1
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• 2004

지역난방설비관리사 '민간자격 국가공인 2차 정밀심사'실시

• The Korea Energy Engineers Association Reports
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• no.16
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• pp.6-7
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• 2003

• Korea Journal of Geothermal Energy
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• v.2 no.1
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• pp.52-56
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• 2006