• Title/Summary/Keyword: Floor heating

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A Casestudy on the Eating and the Cooking Spaces of Farmhouse in Suburban Area (서울 근교 농촌주택에 있어서 식사 및 취사공간에 관한 사례 연구 -경기도 용인군 용인읍 삼가 3리 마을을 중심으로-)

  • 윤정숙
    • Journal of the Korean Home Economics Association
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    • v.26 no.4
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    • pp.87-100
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    • 1988
  • The purpose of this study was to investigate the dweller's housing needs through the connection between dwellers' living pattern and space usage. The objectives were (1) to examine how to eat and cook in the eating and cooking spaces, (2) to examine how to alter the original housing, (3) to research the dwellers' housing needs for the eating and cooking spaces, and the changing process of dwellers' housing needs, and (4) to classify the type of eating and cooking spcaces. The results of this study were (1) there were changed in eating pattern of space usage according to the season. The eating activities were a Korean living pattern : sitting on the floor and eating at the BAB SANG. (2) There was a difference in the pattern of space usage and the activity for main cooking and KIM CHI. (3) AN BANG (eating space for winter) as well as MARU (eating space for summer) has changed to a larger space. (4) By the changing of living patterns, BU AUK (a main cooking space ) has showed a various alternations: function, dimension of space, facilities, floor materials and floor level. (5) The dwellers' housing needs for eating space were a multipurpose room, and a dining kitchen of western living pattern (using a dining table and chairs) with the present changing life styles. (6) The dwellers' housing needs for cooking space were a multipurpose room of working area, a seperation of heating area, a western living pattern, a plan of flat fllor level and a dining kitchen. (7) BU AUK of eating and cooking spaces was classified into 4 types: a traditional type, a mixing type, a modernized type, and a western type.

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A Study on the Risk of Halogen Lamp for Pigsty Heating and Fire Prevention (축사 난방용 할로겐램프의 위험성 및 화재 예방에 관한 연구)

  • Lee, Jae kyung;Seo, Seong Hyeon;Lee, Jae Wook
    • The Journal of the Convergence on Culture Technology
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    • v.7 no.3
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    • pp.553-564
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    • 2021
  • This study analyzed the the risk of halogen lamp for pigsty heating and its fire prevention. Halogen lamps are used for keeping warm in pen because of their excellent economy and convenience. However, there is a high risk of fire due to poor safety management and exposure to animal movements. In fact, after exploring old pigsty and cattle shed, it was easy to confirm that they were exposed to fire risks. We noted this point and studied the possibility of fire by experiment due to combustible contact with halogen lamp and carelessness in use. The experiment was conducted under conditions similar to the actual use environment. After installing halogen lamps to the height used in actual pen, the temperature change was observed with infrared camera with straw, sawdust and rice husks on the floor. And assuming abnormal conditions, the experiment was also conducted under conditions the lamp dropped on the floor or combustible material came into contact with the glass tube inside the lamp. If halogen lamps were used in normal condition, there was no risk of fire. However, in abnormal use environments, smoke comes out or even ignited. Even if it is convenient for use or highly utilized, high risk of fire will require setting up fire prevention measures or regulation of use. Through in-depth fire investigation and research, we should promote the risk of fire and make efforts to prevent fire to minimize human life and property damage.

Viscoelastic Properties of MF/PVAc Hybrid Resins as Adhesive for Engineered Flooring by Dynamic Mechanical Thermal Analysis

  • Kim, Sumin;Kim, Hyun-Joong;Yang, Han-Seung
    • Journal of the Korean Wood Science and Technology
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    • v.34 no.2
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    • pp.37-45
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    • 2006
  • The viscoelastic properties of blends of melamine-formaldehyde (MF) resin and poly(vinyl acetate) (PVAc) for engineered flooring used on the Korean traditional ONDOL house floor heating system were investigated by dynamic mechanical thermal analysis (DMTA). Because MF resin is a thermosetting adhesive, the effect of MF rein was shown across all thermal behaviors. The addition of PVAc reduced the curing temperature. The DMTA thermogram of MF resin showed that the storage modulus (E') increased as the temperature was further increased as a result of the cross-linking induced by the curing reaction of the resin. The storage modulus (E') of MF resin increased both as a function of increasing temperature and with increasing heating rate. From isothermal DMTA results, peak $T_{tan{\delta}}$ values, maximum value of loss modulus (E") and the rigidities (${\Delta}E$) of MF/PVAc blends at room temperature as a function of open time, peak $T_{tan{\delta}}$ and maximum loss modulus (E") values were found to increase with blend MF content. Moreover, the rigidities of the 70:30 and 50:50 MF/PVAc blends were higher than those of the other blends, especially of 100% PVAc or MF. We concluded that blends the MF/PVAc blend ratios correlate during the adhesion process.

A Study of the Anbang Usage and Furniture in the Oiam-Ri Folk Village in Chung-Nam Province (충남 외암리 민속 마을의 안방 사용과 가구 보유 실태 연구)

  • 고도임
    • Journal of the Korean Home Economics Association
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    • v.37 no.10
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    • pp.81-90
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    • 1999
  • This study investigated the present traditional Korean farmhouse based on a survey of 30 households from Oiam-Ri folk Village in Chung-Nam Province. This study was primarily concerned with the present housing; the size and plan of the house, lighting and heating, the finishing materials of anbang(the master's bedroom or ondol) and the kinds of fumiture. I was also interested in identifying the socio-demographic and physical variables that influenced the housing, both the ordinary farm households and the descendent of nobility households. Bibliographical studies, cultural approaches, field surveys with tape recordings, and questionnaires were used to collect the data. The results showed that the types of house plans were mixed from the southern region(one-line type) and middle region(courtyard type). The heating system and the fuel for the ondol anbang has changed entirely from wood burning system to oil boiler system. The finishing material of the anbang floor changed from traditional oil paper and straw mats to vinyl flooring. Traditional fumiture and small decor items are disappearing and are being replaced by modem items, but the descendents of the nobility household kept many traditional type of fumiture and small decor items.

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Development of Loop Heat Pipe Using Bubble Jet (Bubble Jet을 이용한 Loop Heat Pipe의 개발)

  • Kong, Sang-Woon;Ha, Soo-Jung;Jang, Jeong-Wan;Hwang, Jong-Ho;Son, Kil-Jae;Lee, Hyun-Jik;Kim, Jong-Soo
    • Proceedings of the SAREK Conference
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    • 2009.06a
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    • pp.1503-1506
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    • 2009
  • Bubble jet loop heat pipe is a newly devised variation of heat pipe in which heat is effectively transported by the latent heat of evaporation and condensation as well as the heat capacity of circulating working fluid. The circulatory and oscillating motion of the working fluid becomes possible by the motion of bubble jet which is generated at a narrow circular gap. These bubbles are condensed at the condensing section. Bubble jet loop heat pipe makes it possible to carry heat long distances upward and horizontal directions. Because Its structure is a very simple and a low cost, it is available for the floor heating, vinyl house heating, the defrosting of heat pump system and home refrigerator.

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Construction of Geum'yeok-dang, the Heung'hae Bae Clan House, and its Structural Changes during the Late Joseon Period -On the Architectural Ideology and Issue of Practicality- (흥해배씨 종가 금역당(琴易堂)의 건축과 조선후기의 구조 변화 -건축이념 및 실용성과 관련하여-)

  • Lee, Jong-Seo
    • Journal of architectural history
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    • v.25 no.4
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    • pp.31-44
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    • 2016
  • Geum'yeok-dang house in Andong was originally constructed in 1558. The original floor plan of the upper base featured a 90-degree tilted '日' shape, and had inner court(內庭) on each side of 'Jungdang(中堂, center hall)' building that was placed on the south-north axis. When designing the building, the Neo-Confucian client of Geum'yeok-dang applied his understanding of how Ga'rye("家禮") defined the structure of ritual space. Consequently, 'Daecheong(大廳)', the place where guests were greeted and ancestral rites and coming of age ceremonies for male were held, was built in a protruding fashion. 'Jungdang'[otherwise known as 'Jeongchim(正寢)'], where coming of age ceremonies for females were held, the master of the house faced death, and memorials for close ancestors were held, was placed at the center of the residence on the south-north axis. The Geum'yeok-dang today was greatly renovated in the early and mid 18th century, due to the spread of 'Ondol' heating system. As the Ondol heating system became popular, the pre-existing drawbacks and the inconvenience of the house stood out clearly. As a result, the house was renovated into today's structure consisting of '口' shape 'Anchae' and 'Daecheongchae' in separate building.

A Study on the POE(Post Occupancy Evaluation) of Rural Han-ok (전라남도 농촌한옥의 거주성 평가에 관한 연구)

  • Lee, Chang-Jae;Choi, Il;Park, Sung-Jin
    • Journal of the Korean Institute of Rural Architecture
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    • v.16 no.1
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    • pp.17-26
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    • 2014
  • This study examined the trend of floor space characteristics, size characteristics and modeling characteristics so as to evaluate the satisfactory level of subjects living in Hanok. By doing so, the type of Hanok was classified into 5 groups. The satisfactory level was evaluated after the subjects resided in Hanok based on each type of housing. In the satisfactory level investigation, which was conducted after the residence, the overall satisfactory level on Hanok showed to be high. In the evaluation on the residence scale, positive results were generally achieved regarding 'full size of residence', 'number of rooms compared to residence size', 'size of living room', etc. The indoor environment of residence evaluation mainly showed positive results regarding 'ventilation', but most subjects were unsatisfied in regard to 'heating', 'noise', 'lighting', etc. In the behavioral factor evaluation of residents, positive results were gained regarding 'health', but comparatively negative results showed based on items of 'construction expense', 'burden of maintenance expense', 'investment value', etc. After analyzing the influential factors on the overall satisfactory level, results showed that 'dust inflow' of the physical site environment evaluation, 'size of living room' of the residence size evaluation, 'heating' of the residence indoor environment evaluation, and 'burden of maintenance expense' in the behavioral factor evaluation significantly influences the overall satisfactory level.

Energy Performance Evaluation of Apartment Building in Case of Applying a Blind Integrated Window System (전동 블라인드 내장형 창호시스템 적용에 따른 공동주택 에너지 성능평가 연구)

  • Choi, Gyeong-Seok;Sohn, Jang-Yeul
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.22 no.7
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    • pp.429-435
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    • 2010
  • Although recently revised building code requires 15~20% increased thermal insulation performance for window systems, since the code is focusing on winter heat loss, it is not satisfactory to contribute on reducing rapidly rising cooling load in summer. Window systems have great impact on building heat gain and loss. Therefore technological development for window system specialized in shading solar gain in summer is an urgent matter. This study evaluates the performance of sun shading and thermal insulation for blind integrated window system. Also, computer simulation evaluates the effect of heating and cooling energy consumption reduction for an individual unit(floor area of $85m^2$) of a multi-family housing. Physibel Voltra, a heat transfer analysis software, was used to analyse the effect of energy consumption reduction, and the energy load was converted to the cost to compare the actual effect of economical benefit.

The characteristics of heat storage and emission of PCM in Ondol system (잠열저장재를 이용한 온돌판넬의 축열 및 방열특성에 관한 연구)

  • Cho, Soo;Yoo, Je-In;Chung, Hun-Saeng
    • Solar Energy
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    • v.10 no.2
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    • pp.38-43
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    • 1990
  • The present study was to investigate the use of a phase change material for hydronic radiant floor heating. Two identical unit test cells sized $1.8m^L{\times}1.8m^W{\times}1.8m^H$ were built and installed with specially designed $1.6cm^T{\times}9cm^W{\times}80cm^H$ aluminum Ondol-panels holding 1.25kg of calcium chloride hexahydrate(CCH) each. It was found that the Ondol-panel with CCH reduced the room temperature fluctuations and maintains the phase changing temperature for considerably long duration, $2{\sim}4$ times of heating hour, over no-CCH one.

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A Study on The Performance of Ventilation and Thermal Environment for a Combined Type Diffuser in a Residential Space (거주공간에 대한 급·배기 일체형 디퓨저의 환기 및 온열환경 유지성능에 대한 연구)

  • Lim, Seok-Young;Chang, Hyun-Jae
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.29 no.2
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    • pp.74-81
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    • 2017
  • In this study, the combined-type diffuser developed by the Authors, in a previous study, was applied to a residential space. The performance of a ventilation and thermal environment, created by the use of a combined-type diffuser was compared to the pan-type diffuser widely used in apartment houses. In cooling conditions, because of the relatively high air flow rate of ceiling cassette-type air conditioners, the characteristics of airflow distribution in a room were governed by the air conditioner's airflow. In heating conditions, because of the low air flow rate of the diffuser, the characteristics of airflow distribution were governed by the buoyancy effect created by cold external walls and a hot floor. In terms of the Air Diffusion Performance Index (ADPI), which is a thermal environmental index, the result of a combined-type diffuser was greater than a pan-type diffuser in both of cooling and heating conditions. Consequently, the combined-type diffuser showed equal or superior ventilation and thermal environment performance compared to a pan-type diffuser.