• 제목/요약/키워드: Heat Exhaustion

검색결과 53건 처리시간 0.023초

신재생에너지 도입에 따른 시설재배의 경제성 분석 -목재팰릿, 지열과 경유의 비교분석을 중심으로- (Economical Feasibility of Cultivation under Structure Due to the Introduction of New and Renewable Energy -Comparative Analysis of Wood-Pellet, Geothermal Heat and Diesel-)

  • 김형우;윤성이
    • 한국유기농업학회지
    • /
    • 제22권2호
    • /
    • pp.255-268
    • /
    • 2014
  • We are now currently facing serious climate changes such as super typhoon, flood, intense heat, severe cold, super hurricane, drought, desertification, destruction of ecosystem, marine pollution, reduction of food production, destruction of tropical forests, exhaustion of water resources, climate refugees, etc. All of the above mainly derive from greenhouse gas exhaustion. Such harmful consequence might directly affect mankind's sustainable development. If we keep using resources that emits greenhouse gases, the global temperature will rise about $3.2^{\circ}C$ by year 2050. In case of $3^{\circ}C$ rise in temperature, it will result in abnormal climate which will bring about severe property damage. Moreover, 20~50% of the ecosystem will become extinct. As Korea's economy increasingly expands, so do our energy consumption rises. And because of the consequences that can be driven by increasing rate of resource use, not just Korea itself, but also the whole world should seriously concern about greenhouse gases. Although agricultural division only takes up about 3.2% of total greenhouse gas emission, the ministry of Agriculture, Food and Rural Affairs are taking voluntary actions to gradually reduce $CO_2$ and so does each and every related organizations. In order to reduce $CO_2$, introduction of new and renewable energy in farm house warming is crucial. In other words, implementing wood-pellet boiler and geothermal heat boiler can largly reduce $CO_2$ emission compared to diesel boiler. More importantly, not only wood-pellet and geothermal heat is pollution-free but they also have economic advantages some-what. In this thesis, the economic advantage and sustainablity will be introduced and proved through comparing practical analysis of surveyed farm house under structure employing wood-pellet boiler and geothermal heat boiler with Agriculture-Economic Statistic of 2012 who uses diesel boiler.

폐열회수 환기장치의 열교환 효율 개선을 위한 전산수치해석 (Numerical Analysis of Wasted Heat Recovery Ventilator for Improving the Heat Exchange Efficiency)

  • 김현일;김재성;박철우;박경서
    • 한국CDE학회논문집
    • /
    • 제17권1호
    • /
    • pp.54-61
    • /
    • 2012
  • In this paper, we performed numerical analysis to improve the heat exchange efficiency of wasted heat recovery ventilator which has a delivery and a exhaustion fan. One of the most important design factors that affect the efficiency of heat exchange is uniform counter-flow between inbound and outbound air flows. We had simulated several types of porous plates which were installed at air intake area. With plate having 45 degrees of installation angle and 15 mm diameter holes which are uniformly arranged, we can generate a uniform air flows at the area of porous media where inbound and outbound air flows are cross over. In addition, we installed a duct to reduce vortex flows at the outlet and to discharge exhaust airs rapidly. By using the proposed numerical assessment, we expect the improvement of the heat exchange efficiency of ventilator.

저심도 저비용 유닛형 지중열교환기의 개발 (Development of low-cost, low-depth unit-type ground heat exchanger)

  • 오진환;남유진;채호병
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2014년도 춘계 학술논문 발표대회
    • /
    • pp.166-167
    • /
    • 2014
  • Recently, in according to increase cognizance of energy and resources exhaustion, renewable energy system is received attention. In particular, ground heat pump system(GSHP) utilizing annually stable ground temperature for energy saving have been attracted in many buildings. However, GSHP system have disadvantage due to increase of initial installation and boring cost. In this study, in order to reduce the initial cost and to supply ground heat pump system into small scale house, an unit-type ground heat exchanger was developed.

  • PDF

Microwave Heat Dyeing of Polyester Fabric

  • Kim, Sam-Soo;Lee, Su-Gyung m;Ghim, Han-Do;Kim, Joon-Ho;Lyoo, Won-Seok
    • Fibers and Polymers
    • /
    • 제4권4호
    • /
    • pp.204-209
    • /
    • 2003
  • The effect of padding solution on the microwave heat dyeing of polyester fabric was studied extensively. Polyester fabrics were impregnated in aqueous urea solution and aqueous sodium chloride solution for 10 min and then dyed for 7 min by microwave apparatus (2450 MHz, 700 W) under optimum conditions which provide good exhaustion. Aqueous solutions of urea and sodium chloride showed more effective than water as a padding solution for microwave heat dyeing. The type of solvent added in padding media and its concentration significantly affects the K/S values of dyed polyester fabric. Added solvents such as n-hexane, acetone, and dimethyl formamide were also more effective than 100 % water as padding media for the microwave heat dyeing. It is supposed that the effect of used solvents on dyeing property of polyester fabrics depends on the solubility parameter difference between solvent and polyester fabric.

저온융착사를 이용한 섬유의 염색성 및 열처리 특성 (Dyeing and Heat Setting Properties of Low Melting PET Fiber)

  • 황세정;최현석;김동권;정인식;김성군
    • 한국염색가공학회지
    • /
    • 제21권3호
    • /
    • pp.37-42
    • /
    • 2009
  • The low melting PET yarn has sheath/core structure: sheath portion consists of low melting point PET and core portion is regular PET. Dyeing properties of fabric made from low melting PET yarn were investigated at different dyeing temperatures. It was found that the exhaustion yield on the low melting PET fabric was higher than on regular PET fabric. The total K/S value of the dyed low melting PET fabric increased as heat setting temperature increased above $150^{\circ}C$ because the sheath portion of the low melting yarn melted. Although fastness to light of the low melting PET fabric was similar to regular PET fabric, fastness to washing was inferior to regular PET fabric by 1 grade.

실험동물의 병증(病證) 모형에 대한 연구현황 소고 - 중의(中醫) 자료를 중심으로 - (A study on a present condition of research on the experimental model in oriental medicine)

  • 최선미
    • 한국한의학연구원논문집
    • /
    • 제1권1호
    • /
    • pp.69-99
    • /
    • 1995
  • In order to develop experimental research in oriental medicine, it is necessary to make experimental model of diagnostic pattern(證), On model of the condition of a disease maked in china, there are cold-pattern(寒證), heat-pattern(熱證), deficiency of vital energy-pattern(氣虛證), blood-deficiency-pattern(血虛證), yin-deficiency-pattern(陰虛證), yang-deficiency-pattern(陽虛證), deficiency of both yin and yang-pattern(陰陽俱虛證), yang-exhaustion-pattern(亡陽證), blood stasis-pattern(血瘀證), pattern of defferential diagnosis according to states of viscera(臟腑辨證).

  • PDF

Dyeing Properties of Blanket Fabric of Dyeable Polypropylene

  • Kim, Hyun-Jin;Lee, Jin-Ah;Chang, Young-Min;Park, Jong-Ho;Kim, Sung-Dong
    • 한국염색가공학회지
    • /
    • 제19권2호
    • /
    • pp.36-43
    • /
    • 2007
  • Dyeing and fastness properties of a dyeable PP fiber were examined with four different types of disperse dyes. It was found that the dyed PP fiber could be cleared by soaping without using sodium hydrosulphite, and that the heat setting above $140^{\circ}C$ resulted in the melting of the PP fiber. The rates of dyeing and the extents of exhaustion of three primary E type dyes were different with each other, the apparent color strength did not increase with increasing dye concentration, and color fastness to washing was not satisfactory. In the cases of both high wash fastness and high light fastness dyes, the rates of dyeing were slow and the extents of exhaustion were very low. On the other hand, the dyeing rates of three primary S type dyes were similar and the build-up properties were good with good color fastnesses. It might be concluded that the best disperse dyes for the dyeable PP fiber were S type dyes.

이제마(李濟馬)의 난치병(難治病)에 대(對)한 시각(視角)에 관(關)한 연구(硏究) (A study on Intractable disease in the sight of Lee Je Ma)

  • 장현진
    • 사상체질의학회지
    • /
    • 제7권2호
    • /
    • pp.129-134
    • /
    • 1995
  • Lee Je Ma (1837~1900) wrote the DongEuSuSeBoWon in 1894. Constitutional Medicine what is called Sasang Medicine has originated from him. In this book he refers to mild, serious, intractable, incurable and fatal disease. In the sight of his Medical theory each state of disease deserves to be researched. 1. In the case of Soumin exhaustion of Yang, Taeyang-Kwolum, noxious Yin, Yang is kept in the exterior by excessive Yin in the interior, middle diabetes and swelling belong to intractable disease and solid mass in the right epigastric zone belongs to fatal disease. 2. In the case of Soyangin exhaustion of Yin, lower diabetes, afternoon fever due to deficiency of Yin, spitting blood and swelling belong to intractable disease and distention of abdomen with gas or fluid belongs to fatal disease. 3. In the case of Taeumin syncope due to chills, dryness-heat, diabetes, pain of chest and abdomen and swelling belong to intractable disease and apoplexy with dosed eyes belongs to fatal disease. 4. In the case of Taeyangin vertebral disease makes flaccidity of lower limbs and dysphagia with vomiting of frothy fluid belongs to fatal disease.

  • PDF

조명발열 배기시스템의 배기위치에 따른 배기열량 실험연구 (A Study of Exhaust Air Flow for Cooling Load Reduction from Interior Lighting)

  • 오병길;정민호;원종서;이훈
    • 설비공학논문집
    • /
    • 제25권1호
    • /
    • pp.1-6
    • /
    • 2013
  • This study aims to reduce cooling energy by grasping kinds of heating load in building in order to decrease cooling energy in summer and eliminate efficiently heating load. Lighting heating value was confirmed through examination and experiment concerning lighting heating and reducible exhaustion value was extracted lighting apparatus. The optimal exhaust system by air conditioning type was suggested for applying lighting heat exhaust system and the method contributing to promotion supplying low energy architecture was suggested by predicting reduced cooling load.

Dyeing and Flame-retardant Properties of Low melting yarn

  • Hwang, Se-Jeong;Min, Mun-Hong;Son, Hyun-Sik;Kim, Chang-Nam;Lee, Gyu-Hwan
    • 한국염색가공학회:학술대회논문집
    • /
    • 한국염색가공학회 2010년도 제3회 국제학회
    • /
    • pp.167-168
    • /
    • 2010
  • Non coating type Low melting yarn(L/M PET) not to use the polyurethane resin causing some problems was knitting and evaluated its dyeing characteristics, heat setting properties and flame-retardant properties without flame retardant agent or flame retardant fabric. In order to investigate the dyeing property of fabric of L/M PET, the dyeing of L/M PET was experimented at each different dyeing temperature. Higher exhaustion yield was achieved at lower temperature of L/M PET compared to regular PET. According to result of the study for the heat setting properties of L/M fiber, the K/S value of dyed L/M fiber increased as much as the heat setting temperature did. The experiment for the light fastness reached similar result to dyed PET. However washing fastness in L/M fiber showed lower grade compared with regular PET. flame-retardant efficiency of L/M PET without flame retardant agent or flame retardant fabric measured by $45^{\circ}$ burn test and Contact burn test. The flame?retardant performance of the sample was carried out according to the Korea Fire-fighting Standard.[KOFEIS 1001].

  • PDF