• 제목/요약/키워드: comfortable

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잠열 축열 - 바이오 세라믹 온돌의 난방 특성 - 이론적 분석을 중심으로 - (Floor Heating Characteristics of Latent Heat Storage - Bioceramic Ondol - Focused on Theoretical Analysis -)

  • 송현갑;유영선
    • 한국에너지공학회:학술대회논문집
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    • 한국에너지공학회 1995년도 춘계학술발표회 초록집
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    • pp.213-222
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    • 1995
  • Korean traditional Ondol with the sensible heat storage medium has been for a long time used as residential heating system, in these days the concrete Ondol without the heat storage medium was realized as the heating system in the private houses and the apartments. This floor heating system is good for our health. But the concrete Ondol is not desirable for the energy saving and for the maintenance of comfortable room temperature because the heat storage medium is not employed in the concrete Ondol. And as the hot water circulating pipes ate buried under the the concrete floor, the concrete Ondol system has some kind of problems to be improved. Therefore the new type of Ondol system was developed in this study. And the new Ondol was consisted of latent heat storage material as heat storage medium with a great heat capacity and bioceramics as medium to maintain comfortable room temperature. In this study, the heat transfer characteristics of latent heat storage-bioceramic Ondol was analyzed theoretically.

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인체 계측학을 이용한 안전하고 편리한 작업 한계면에 관한 연구 (- A Study on Safe and Convenient Work-Envelop Using Anthropometric Stereotype -)

  • 임영문;방혜경;최인려
    • 대한안전경영과학회지
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    • 제6권4호
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    • pp.99-106
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    • 2004
  • In developing criteria for establishing workstation reach limits, it is essential to select the appropriate anthropometric stereotype for solving a specific design problem. The most important factor for comfortable workstation is to eliminate trunk flexion from the neutral (upright) posture. A solution to this design can be developed using population stature and link length data. This paper provides a methodology for design of comfortable workstation using anthropometric stereotype. Application of this methodology can be utilized in various designs for work space including standing and sitting workplace. For the purpose of this study, the data are measured by some parts on body such as stature, arm length, wrist height, elbow height, and shoulder hight. The samples for this study are randomly chosen from university students in Seoul and Kangnung during sixteen months (2003.3-2004.6).

천장복사냉방의 온열쾌적성 평가에 관한 연구 (Evaluation of Thermal Comfort in Ceiling Cooling System)

  • 이주연
    • 설비공학논문집
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    • 제20권4호
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    • pp.287-293
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    • 2008
  • The purpose of this study was to clarify the effects of air and ceiling temperatures on a type of ceiling cooling system that involves cool water circulation. The experiment is conducted in summer. The subjects (11 young females) are exposed to the following conditions: combinations of air temperatures $(27^{\circ}C,\;29^{\circ}C,\;31^{\circ}C)$ and ceiling temperature of $(22.7^{\circ}C,\;23.7^{\circ}C,\;24.7^{\circ}C)$ in still air and RH 50%. The following results were obtained; the thermal sensation vote is neutral at a mean skin temperature of $34.5^{\circ}C$. The ceiling temperature affected different parts of the body. For example, the forehead, scapula and abdomen produced different skin temperatures. Thermal comfort vote was rated as comfortable at high temperature environment. The satisfaction from the ceiling temperature was valued comfortable zone in this experiment. Mean skin temperature showing higher thermal neutrality temperature than existing studies for floor and wall radiation cooling results.

유로저항에따른 속도제어를 통한 Zone별 유량특성 연구 (A Study of Flow Characteristics through the Speed Control and Flow Resistance)

  • 오병길;김회서
    • 설비공학논문집
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    • 제23권11호
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    • pp.762-768
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    • 2011
  • We use floor radiant heating system in the house of commons in winter Floor radiant heating system, which transfer heat by radiation, is one of the energy efficient and comfortable systems that. Floor radiant heating system is configured to be controlled by the room for energy-saving. Proper flow rate to a comfortable heating in the room is important. However, Using a constant speed circulation pump in separate rooms, heating system may cause an imbalance because of the difference of length of coil when operating in the rooms. In this study, our Research team examined heating imbalance due to the variation length through the coil length changes and flow control of the circulation pump.

후방연장 계속가공의치의 임상적 조사 (A clinical survey of distally extending cantilever bridges)

  • 한수부;김우성
    • Journal of Periodontal and Implant Science
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    • 제28권2호
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    • pp.273-280
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    • 1998
  • This study was to compare the patients wearing comfortable distally extending cantilever bridges (DECBs) with those having discomfortable ones, in the aspect of the periodontal condition & prosthodontic status. The subjects in the present study were 164 patients appointed to Seoul National University Dental Hospital. One group was consisted of 101 patients wearing comfortable DECBs and the other group were made of 64 patients who had felt discomfort. On clinical parameters, there were no significant difference between 2 groups in plaque index, tooth mobility & probing depth, but gingival index was higher in group wearing discomfortable DECBs. In prosthodontic status, the ratio of pontic oversize was higher in the group of discomfortable DECBs, but there were no significant difference in the view of crown overcontour, overhanging margin & interproximal space closure between 2groups. This study failed to clarify causal factors of discomfortable DECBs.

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주광을 활용한 LED조명시스템의 컨트롤에 관한 실험적 연구 (An Experimental Study on Control Strategy of LED System Using Daylight)

  • 윤경;윤갑천;김강수
    • KIEAE Journal
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    • 제10권6호
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    • pp.33-39
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    • 2010
  • Visual Environment and productivity are correlated. So we need to create a comfortable visual environment and maintain proper workplane illumination level. We can obtain lighting energy savings and comfortable visual environment using daylight and LED lights. In this study, we characterized the indoor illuminance level according to the sky condition and proposed dimming control strategy of LED lights. Energy savings in On/Off control mode are 40% at clear sky and 28% at intermediate sky. In dimming control mode, energy savings are 77.2% at clear sky and 64.1% at intermediate sky. Then we obtain the appropriate dimming control strategy of LED lights based on data. Dimming rates are 0-14.2-80(min-avg-max, %) for LED 1, 0-19.9-60% for LED 2 and 30-61.4-90% for LED 3. Lighting energy savings are 68.2% for LED dimming system applied this control method.

산업디자인에서 인체다양성의 적용에 관한 연구 (A Study on the Application of Human variability to the Industrial Design)

  • 정석길;이상도
    • 대한인간공학회:학술대회논문집
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    • 대한인간공학회 1994년도 춘계학술대회논문집
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    • pp.85-85
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    • 1994
  • It is important to provide the opportunity and means to change body posture frequently during the work period. Maintaining a given posture, even if it appears comfortable in the beginning, becomes stressful as time goes on. In order to design most products some knowledge of the dimensions of the human body is required. Data concerning human body dimensions are referred to as anthropometric data. Anthropometric data are used to establish many product dimensions such as the heights of work surfaces, minimum size for access openings, spacing between controls, mounting angles for displays, distance between user and controls, and so forth. The usual procedure is to design to accommodate 90% of the population of anticipated product users. In sosme instances it is necessary to provide a method for adjusting because it allows users to alter the produst's dimensions to meet their individual needs. When the user makes the proper adjustments, the product will be easier to use (e.g., the seat and rearview mirror adjustment mechanisms on automobiles) or more comfortable (e.g., office chairs and stereo headphones).

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발한 Thermal manikin과 국제 표준 7730을 이용한 원자력 발전소 작업복의 열적 쾌적성 판별 (Determining thermal comfort properties of coverall worn in the atomic power plant using a sweating thermal manikin and ISO 7730)

  • 홍성애
    • 대한인간공학회지
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    • 제15권1호
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    • pp.91-103
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    • 1996
  • For determining thermal comfort properties of work suit in an atomic power plant, three different coverall ensembles (PVE, PET/Rayon, PP Nonwoven) were selected and the resistance to dry and evaporative heat transfer were measured for each ensemble by using a sweating thermal manikin. Also, PMV (Predicted Mean Vote) and PPD(Predicted Percentage of Dissatisfied) indices were predicted according to ISO 7730. As a result, ideal environmental conditions in an atomic power plant were suggested to make workers feel thermally comfortable. In addition, ideal intrinsic insulation values of coverall ensembles as a work suit under the present environmental conditions in the at6omic power plant were provided. The information given in this paper can be used to control environmental conditions in the atomic power plant thermally comfortable and to select a proper work suit for providing thermal comfort to the workers.

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여성 바지 패턴에 관한 연구(1) -밑위길이 및 앞.뒤 밑너비 연장분 변화량을 중심으로- (A Study on the Slacks Pattern for Women(1) -Depending on the Variation of Crotch Length and Front & Back crotch Width Extension)

  • 김효숙
    • 복식문화연구
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    • 제6권3호
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    • pp.46-55
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    • 1998
  • The purpose of this study was to develop the better fitting and more comfortable slacks pattern for women. 10 types of slacks pattern were made and worn compared with the sensory evaluations method. The main results of this study were as follows 1. Sensory evaluation for appearance; According to the result of means among the 10 slacks patterns, Type 2 method slacks was most satisfactory, and the next was the Type 4 slacks followed by Type 3, Type 5,6, Type 8, Type 1, Type 7, Type 9 Type 10 method slacks. 2. Sensory evaluation for comfort; The result of means showed that the Type 5 method slacks was most comfortable, and the next was the Type 3,8 slacks followed by Type 6,9 Type 7, Type 1,2,3, Type 10 method slacks.

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Relationships of sensibility image of mannequin and apparel shop

  • Choi, Mi-Hwa;Yoh, Eunah
    • 복식문화연구
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    • 제22권6호
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    • pp.955-964
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    • 2014
  • This study is to explore the relationships between sensibility images of mannequins and apparel shops. A total of 113 consumers participated in experiments with photo stimuli of 2 mannequin types (realistic and semi-abstract mannequins) and 4 brand shops of women's casual wear. In results, luxurious, chic, strong, sexy, and young images were more strongly perceived from realistic mannequins than semi-abstract mannequins whereas simple and soft images were more strongly perceived from semi-abstract mannequins than realistic mannequins. Shops using realistic mannequins indicated strong images whereas shops using semi-abstract mannequins presented soft, comfortable, and feminine images. In the correlation analysis, luxurious, chic, strong, and young images of realistic mannequins were consistent with shop images using realistic mannequins. Also, luxurious, chic, soft, comfortable, and feminine images of semi-abstract mannequins were consistent with shop images using semi-abstract mannequins. In order to clearly communicate brand concepts with consumers, mannequin that is a key element of visual merchandising in the apparel shop, should be carefully selected, considering the accordance with shop image.