• 한국산림과학회지
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• 제112권4호
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• pp.544-553
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• 2023

활엽수림은 여름철에 착엽을 통해 일사를 차단하여 열 스트레스를 완화하는 역할을 하는 것으로 알려져 있지만, 이와 관련된 데이터의 축적은 부족한 실정이다. 따라서 본 연구는 여름철 활엽수림에서의 휴식이 온열환경 쾌적성 및 인체의 생리・심리적 반응에 미치는 영향을 분석하는 것을 목적으로 하였다. 연구대상자는 남녀 대학생 32명(21.5±2.1세)으로 하였다. 연구대상자는 두 명이 한 조를 이루어 각각 실험지(수관울폐도: 76.6%)와 대조실험지(25.9%)로 이동하였고, 일련의 실험과정을 이후 장소를 교대하여 같은 실험을 진행하였다. 실험과정은 다음과 같다. 연구대상자는 의자에 앉아 휴식한 후, 눈을 감고 5분 동안 안정을 취하였다. 이때의 온열환경 쾌적성을 평가하고 심박변이도, 심박수, 이마체온을 연속적으로 측정하였다. 이후 혈압 및 맥박수를 측정하였으며, 주관평가를 진행하였다. 그 결과, 실험지는 통계적으로 유의미한 예상평균한서감지수 및 예상불만족률의 감소, 부교감신경활동의 증가, 심박수・이마체온・이완기혈압・맥박수의 감소가 나타났으며, 주관적 온열감 및 쾌적감이 개선되었다. 결론적으로, 수관울폐도가 높은 활엽수림은 여름철 온열 스트레스를 감소시키며, 인체를 생리・심리적으로 안정시킨다는 것을 확인하였다.

• 한국의류학회지
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• 제28권6호
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• pp.767-775
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• 2004

In order to evaluate physiological responses and comfort sensation of the developed thermoregulating textile material, polyester knit fabric was treated with phase change material (PCM) microcapsules by printing. Ten male subjects wearing an experimental best with and without PCMs were seated for 20 minutes, then exercised for 20 minutes, and then seated for 30 minutes in the chamber which was controlled under the temperatures of 20$\pm$1$^{\circ}C$, 50$\pm$5%R.H. The subject's skin temperature, microclimate inside garment and comfort sensation of two experimental bests were compared one another. As a result, the rectal temperature, skin temperature and mean skin temperature were similar in the two groups, and the subjects were not able to perceive the differences in comfort of the two experimental bests. However, the effect of PCM microcapsule could be seen from microclimate temperature and humidity. The microclimate temperature of the PCM garment at chest was significantly higher during exercise. The microclimate humidity of the PCM garment at chest was significantly lower during exercise and rest.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.866-871
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• 2006

Recently according to the fashion of well-being, the case study of under floor heating system type for residential space is increasing. Specially double slab floor system can make several roles as reducing the acoustic noises and also supplying fresh air through the gap. So in present study floor heating performance was examined with various location of the space in the case of floor supply air and ceiling supply air. In both cases return air went out through ceiling opening. As one of the result is that when using the heat pipe type floor heating system the temperature difference between supply and return water was $15.2^{\circ}C$, but in case of commercial type floor heating system the temperature difference was $5.3^{\circ}C$ when the supply water temperature was $50^{\circ}C$.

• 한국주거학회논문집
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• 제18권4호
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• pp.1-7
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• 2007

The principle of Korean Traditional Housing was to be harmonized with the nature with shapes according to regional climate and materials easily available from the region. These environmentally friendly characteristics protected indoor environment from climate changes. The characteristics of Korean traditional housing to control indoor environment would be very useful for contemporary housing in that current issues, improving housing amenity and wellbeing, had basic goals same with what Korean Traditional Housing had. Though it could be found characteristics of indoor thermal environment heated by Ondol Heating System, analyses of evaluation made by occupants of the rooms were insufficient because most of the studies had been focused on the measurement of indoor thermal factors. Thus, with an evaluation of occupants for the indoor thermal comfort and an estimation of discomfort derived from the result of vertical temperature distribution, it was studied whether the agreeable indoor range of rooms, of which was Jeonju Hanok Living Experience Center, heated by Ondol Heating System corresponded to the agreeable indoor range presented in references.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.489-496
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• 2004

전동차 출입문에 에어 커튼을 설치시 객실의 냉난방 효과에는 외부의 찬공기나 더운 공기를 차단하고 외부로부터의 먼지, 배기가스, 냄새, 연기 등의 침입을 방지함으로 위생에 좋으며 항상 쾌적하고 깨끗한 실내를 유지하며, 객실내의 온도 분포가 균일함으로써 건강에도 도움이 된다 냉방시의 냉기 난방시의 온기, 손실을 줄여 냉. 난방 유지비를 대폭 절감 할 수 있으며, (약 86$\%$) 설치 전보다 승객의 출입에 쾌적함을 주며 경영주에게는 경비 절감을 위한 필수품이 되며 예산 절감에 효과가 있다. 출입문 부근의 승객에게도 출입문의 개폐시 냉온의 온도 변동이 없어 승객에게 쾌적감을 느끼게 하며, 객실 온도는 출입문을 열거나 닫을 때 온도 차이가 있다. 연구의 주목적은 외풍 문제에 관계없는 만족스러운 열환경 상태를 유지하는데 있으며 전동차 출입문에 에어 커튼을 설치했을 때 온도의 변화 도를 연구하였다. 그리고 온도는 객실 바닥에서 0.1 0.5 1.3 1.7m 높이에서 측정하였으며 온도 병화의 원인은 외풍에 더 많은 영향을 받는다는 것을 발견하였다.

• 한국의류학회지
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• 제28권5호
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• pp.713-722
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• 2004

This study examined the effects of two kinds of functional sun hats through a head-manikin test and a climatic chamber trial for farm workers in summer. Experiment was composed of four conditions. The first condition was the condition without any hat (Control). The second was the condition with a sun hat on the market (Hat A). The third was the condition with a functional sun hat made of reflective fabric (Hat B). The last was the condition with a functional sun hat having a ventilating structure as well as reflective fabric (Hat C). For the subjects in the climatic chamber trials, 12 healthy males volunteered. Air temperature, relative humidity and globe temperature in the chamber was maintained at $33{\pm}0.5^{\circ}C,\;65{\pm}5%RH\;and\;39{\pm}1^{\circ}C\;(WBGT\;33^{\circ}C)$. Subjects did a simulated red pepper-work (50-min work and 10-min rest, twice repetition) for 120 min. As the result of head-manikin test, the surface temperature on middle of back-neck was the lowest in Hat B of four conditions and the surface temperature on top of head was the lowest in Hat C. As the result of climatic chamber trials, there were apparent differences between with (Hat A, Hat B, Hat C) and without a sun hat (Control). In rectal temperature ($T_{re}$), mean skin temperature ($\={T}_{sk}$), heart rate (HR), total sweat rate (TSR), The physiological heat strain was less in the condition with hats than in the condition without a sun hat. As the increasing rate in Tre, Hat B is the most effective hat for alleviation heat strain. As the subjective responses, Hat B was the most effective hat for thermal comfort even though the difference was not significant. Hat C was less effective than Hat B and the reason might be the increase of weight due to inserting the ventilating structure.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2001년도 춘계학술대회 논문집
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• pp.262-270
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• 2001

본 연구의 목표는 새로 개발된 구두골을 평가하여 보다 편리하고 기능성이 향상된 구두를 제작할 수 있는 한국형 구두골(shoelast)을 설계하는 것이다. 구두의 적합성에 영향을 주는 인자를 찾아내고, 이들에 대한 평가 방법을 개발하여 인간공학 실험을 실시하였다. 새로 개발한 구두골은 남.여 각각 2 개의 타입(type)으로 10 명의 평가자에 의하여 단기간 (1 주일)의 착화감 평가가 이루어졌다. 인체측정치와 발 부위의 상관성 평가, 피험자 각각에 대한 시계열분석의 결과를 종합하여 두 타입의 구두골에 대한 문제점을 파악하고, 그 개선점을 도출하였다. 이 결과를 바탕으로 한국형 구두골(shoelast) 설계 치수를 설정하였다. 본 연구에서는 얻어진 결과는 구두 제작 공정에 직접 사용될 수 있으며, 구두의 쾌적성 및 기능성 향상에 크게 기여할 것으로 기대한다.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
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• pp.324-329
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• 2008

Recently with the demand of well-being is increased, the demand for indoor thermal environment and air quality is increased. According to this circumstance, many people in Korea note the traditional architecture that is made by natural materials, such as a soil, stone and wood. However, few researches regarding the indoor thermal environmental characteristics of the Korean traditional houses is reported. In this study we analyzed the indoor thermal environment for Han-ok through field measurement. Moreover, based on the field measurement results. indoor thermal comfort in Han-ok is analyzed.

• 한국환경과학회지
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• 제14권2호
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• pp.209-214
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• 2005

Draft is defined as an unwanted local cooling of the human body caused by air movement. It is a serious problem in many ventilated or air conditioned buildings. Often draft complaints occur although measured velocities in the occupied zone maybe lower than prescribed in existing standards. Purpose of this study is to clarify the evaluation of thermal comfort based on temperature and air velocity in winter. Experiments were performed in an environmental chamber in winter. Indoor temperature and air velocity was artificially controlled. The experiments were performed to evaluate temperature conditions and air velocity conditions by physiological and psychological responses of human. According to physiological responses and psychological responses, it was clear that the optimum air velocity is about 0.15 m/s and 0.30 m/s.

• 한국환경과학회지
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• 제14권2호
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• pp.215-220
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• 2005

Thermal neutrality is not enough to achieve thermal comfort. The temperature level can be the optimal, and still people may complain. This situation is often explained by the problem of local discomfort. Local discomfort can be caused by radiant asymmetry, local air velocities, too warm and too cold floor temperature and vertical temperature difference. This temperature difference may generate thermal discomfort due to different thermal sensation in different body parts. Therefore, thermal comfort can not be correctly evaluated without considering these differences. This study investigates thermal discomfort sensations of different body parts and its effect on overall thermal sensation and comfort in air-heating room. Experimental results of evaluating thermal discomfort at different body parts in an air-heating room showed that thermal sensation on the shoulder was significantly related to the overall thermal sensation and discomfort. Although it is known that cool-head, warm-foot condition is good for comfort living, cool temperature around the head generated discomfort.