건식이중바닥온돌에서의 쾌적성 평가에 관한 연구

김난행(Nan-Haeng Kim),손장열(Jang-Yeul Sohn) 한국생활환경학회 2005 한국생활환경학회지 Vol.12 No.3

The aim of the research was to evaluate the characteristics of thermal comfort in the two kinds of Ondol heating systems (Wet ondol and the dry double floors Hydronic Ondol). Physical features conditions, thermal sensation, thermal comfort, humidity sensation, comfort of the lower half of the body were investigated for the survey. The results are as follow, (1) While the skin temperature showed a wide distribution of temperature in wet ondol, it showed a narrow distribution of temperature in the dry double floors hydronic Ondol. (2) The response to thermal comfort which people felt was satisfactory, and most of them felt dry during the test.

건식이중바닥온돌시스템 개발을 위한 실험적 연구

김난행(Kim Nan-Haeng),손장열(Sohn Jang-Yeul) 한국주거학회 2006 한국주거학회 논문집 Vol.17 No.3

The aim of the research was to evaluate the characteristics of thermal environment and thermal comfort in the Dry Double floors Hydronic Ondol System. Physical indoor thermal environments (the floor surface temperature, the vertical temperature, etc.) and skin temperature have especially been measured. Physical features conditions, sensation, thermal comfort, humidity sensation, comfort of body were investigated for the survey. As a result, (1) During the operation of the boiler (12 hour), the average indoor temperature is appeared to be . The floor surface temperature showed peak value of after 8hours 30minutes after the start-point of the heating. The vertical difference of temperature was turned out to be not uniform. (2) While the skin temperature showed a narrow distribution of temperature in the Dry Double floors Hydronic Ondol system. (3) The response to thermal comfort which people felt was satisfactory, and most of them felt dry during the test.

조립식과 습식온돌의 구조 및 바닥마감재별 방열 특성 비교 연구

김태원(Kim Tae-Won),김난행(Kim Nan-Haeng),김종엽(Kim Jong-Yeob),손장열(Sohn Jang-Yeul) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

This research was estimated that the thermal characteristics of the materials for a floor structure are very important factors to the thermal comfort. In this study, experimental chamber were constructed to evaluate a heat retrieving characteristics difference between floor finishing material and structure of ondol system.<br/> A research for comparison' analysis to heat retrieving characteristics of the pre-fabricated ondol system and existing ondol system according to floor finishing materials. The conclusions of this study are as follows. (1) Flat rates of the top finish handling were showed that affecting many effects on average temperature of floor finishing material and wooden floor was showed very wide comports of the floor surface temperature ranges. (2) pvc sheet showed that the bottom temperature is relatively higher than different floor materials in energy consumption sides. (3) time to reach set temperature in hot water of 40"C was presented pvc sheet > wooden floor > no finishing. and in case 50℃ was wooden floor > no finishing > pvc sheet, in case 60℃ was no finishing > pvc sheet > wooden floor.

건식이중바닥 온수온돌 시스템의 실내온열환경 및 열적특성

최동혁(Choi.Dong-hyuk),김난행(Kim.Nan-Haeng),손장열(Sohn.Jang-Yeul) 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The aim of the research was to evaluate the characteristics of indoor thermal environment related to thermal storage in the two kinds of Ondol heating system. Physical indoor thermal environments (the floor surface temperature, the vertical temperature etc.) and thermal comfort indicators(PMV, PPD, OT) have in particular been measured. (1)As a result of measurement of indoor temperature and relative humidity, it appeared to be 20.4℃ and<br/> 33% in case of wet Ondol, 19.2℃ and 27.3% in case of dry double floor Ondol heating system. In case of wet Ondol indoor temperature satisfied 22℃ which is the comfort condition for indoor temperature in winter for 11 hours at 5hours after the starting point of heating and in case of the dry double floor, in door temperature satisfied the comfort condition for 4 hours at 2 hours and 20minutes after the starting point of heating. However, relative humidity didn'tgenerally satisfied comfort condition in both case of wet Ondol and dry double floor.

온수온돌 바닥마감재에 따른 실내 열환경 및 방열 특성 평가

원종욱(Jong-Wook Won),김난행(Nan-Haeng Kim),손장열(Jang-Yeul Sohn),박병윤(Byung-Yoon Park),김종엽(Jong-Yeob Kim) 한국생활환경학회 2002 한국생활환경학회지 Vol.9 No.2

The thermal characteristics of floor finishing material are very important on the thermal comfort because Koreans are used to be seated on the floor. In this study, experimental chamber were constructed to evaluate the thermal comfort and characteristics according to floor finishing materials and structure of Ondol system. The results of this study are 1) The factor that influence reaching to the set temperature of model room was thickness and thermal conductivity of floor finishing material, 2) Surface temperature for maintaining same indoor air temperature and thermal comfort is different according to thermal conductivity and diffusivity of the floor finishing material, 3) In the Glass Plate Ondol system, wooden floor was most close to comfort zone in the Conventional Ondol system, 4) The factor that influence the amount of energy required to reach set temperature was thickness of floor finishing. 5) As the result of evaluating thermal comfort by contact temperature of glass, concrete, marble were fluctuated sharply according to the floor surface temperature. But the carpet was close to human body temperature.

二重바닥溫突시스템 개발을 위하여 熱的 特性의 比較에 관한 實驗硏究

여한승,김난행,손장열 대한건축학회 2004 대한건축학회논문집 Vol.20 No.10

The aim of the research was to develop the double floor Ondol system. Experiment on radiant property, distribution of surface temperature, insulating ability for wet hydronic Ondol and double floor hydronic Ondol system was undertaken through physical experiments in a laboratory setting. Hot water whose temperature was varied from 40℃ to 60℃ with 10℃ interval was supplied to each Ondol system. As a result, (1) As for the heat loss from the floor to the underground, the Hydronic Radiant Floor Heating System with the Double Floorings was lower than the typical Ondol system. (2) Under consideration of the differences from supply water temperature to return water temperature, Hydronic+ Radiant Floor Heating System with the Double Floorings was higher than the typical Ondol system by 0.23℃ to 0.62℃ with regard to the heat storage of the Ondol structure. (3) When supplying the 60℃ hot water, heat radiation efficiency of the Hydronic Radiant Floor Heating System with the Double Floorings was higher than the typical Ondol system by 9.4% with regard to the heat storage of the Ondol structure.

전통온돌난방의 실내온열환경특성에 관한 연구

여한승,김난행,손장열 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

The aim of the research was to evaluate the characteristics of indoor thermal environment. Related to thermal storage in the traditional Ondol heating system, and to verify the excellence of it. Physical indoor thermal environments (the floor surface temperature. The vertical temperature etc.) and thermal comfort indicators(PMV, OT) have. In particular, been measured. The results of a measurement campaign carried out inside two traditional houses with Ondol heating system is presented in this paper. The analysed houses are the Chung hyo dong (the head house of Ryo family in Andong) and the Pyeung won jung(the traditional house in Yesan). The experimental results have pointed out how Ondol heating system may lead to comfortable and uniform indoor thermal environments.