• Title/Summary/Keyword: 공기조화기

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소형에어컨의 에너지절약 기술

  • 강용태
    • The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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    • v.29 no.9
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    • pp.70-74
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    • 2000
  • 소형에어컨의 대부분은 2004년까지 에너지절약법으로 정해진 목표기준을 달성하도록 의무화하고 있다. 또 오존층보호를 위해 신냉매로의 전환도 필요한 바, 본 보고에서는 소형에어컨의 에너지절약 기술과 신냉매 대응기술에 관하여 소개한다. 그밖에 에너지절약법의 목표기준을 달성하기 위해서 필요한 향후 연구과제에 대해서 기술한다.

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空氣調和機 및 熱펌프에 對한 斷續運轉性能 및 季節의 表示方法

  • 민만기
    • Journal of the KSME
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    • v.22 no.5
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    • pp.341-349
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    • 1982
  • 소비자에게 이러한 마침표에 대한 사전지식을 주는 공기조화. 냉동기계의 성능평가방법에서는 쉴 사이없이 변동하는 외기온도에서의 성능과 부분부하의 단속운전(cyclic operation)에서의 성능을 밝혀주고 이를 기초로 해서 공조기 또는 열펌프의 계절성능을 밝혀주여야 될 것이다. 여기서는 그러한 새로운 계절성능의 평가절차 및 방법 중에서 계절성능을 표시하는 방법과 용어에 대해서 만 해설을 하고자 한다.

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A Study on Air-Conditioning System for Excavator using Forced Exhaust (강제배기를 이용한 굴삭기 공기조화 시스템에 관한 연구)

  • Hwang, J.H.;Jeong, C.S.;Ko, J.H.;Yang, S.Y.
    • Journal of Drive and Control
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    • v.10 no.2
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    • pp.23-29
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    • 2013
  • The excavator is used in a variety of construction environments. There are many kinds of risk like falling rocks or harmful dust. The excavator cabin protects the operator not only from these harmful environments but also provides a comfortable working environment. By the way, the excavator cabin consumes a lot of energy for cabin air conditioner. For this reason, the research is required to reduce energy consumption. This study suggests the air conditioning system for excavator using forced exhaust. First, the forced exhaust system simulated by AMESim tool and surveyed the applicability. Using AMESim simulation, it was investigated the effect of cabin inside temperature by intake flow rate and intake air temperature. The experiment executed using the 1.5 ton excavator and field tested according to the intake flow rate. Finally, verified the applicability on the air conditioning system for excavator using forced exhaust.

팬 및 펌프 모터의 이상유무 감시 -기술 및 제품-

  • 조추영
    • The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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    • v.31 no.5
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    • pp.42-47
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    • 2002
  • 건물의 고도화 및 최첨단 공조시스템에 있어서 공기 조화기는 가장 핵심적인 장비로서 고장의 전도는 비교적 단순하나 요소기술의 적용, 운전, 유지관리에서 소홀하게 되 면 환경 업무의 저하와 생산성이 낮아지고 막대한 비용을 초래하기도 한다 . 고장은 설비시스템과 공조기의 사용기간이 길어짐에 따라 마모, 피로 등의 물리적 성능열화가 진행되며 이러한 물리적 열화가 최종적으로 나타나는 현상이 고장이다. 고장의 시간적 변화에는 초기고장, 우발고장, 마모고장으로 분류되며 초기고장은 시스템의 불안정에 따른 원인으로 시운전시에 자주 발생하고 정상적인 운전시에 발생되는 우발고장이 기간이 지나면 마모 고장기에 도달하게되며 이때는 부품의 한계수명과 마모등의 원인으로 고장률이 급격히 증가된다 따라서 본문에서는 공조시스템의 공기조차기의 팬과 펌프 기기의 고장원인을 살펴보고 이에 대한 고장을 신속하게 감시할 수 있는 방안을 일반적일 고찰을 통해 체계적이고 종합적인 대응방안을 소개하여 불필요한 보수비용의 발생과 생산성 저하를 방지하고 내구년수를 증가할 수 있는 신기술의 일부분을 소개하고자 한다.

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Prediction of the Air-side Particulate Fouling in Finned-Tube Heat Exchangers of Air Conditioners used in the Field (실공간 사용 공기조화가용 열교환기의 공기측 파울링 특성 예측)

  • Hwang, Yu-Jin;Kim, Gil-Tae;Jeong, Seong-Il;Lee, Jae-Geun;Ahn, Young-Chull
    • Proceedings of the SAREK Conference
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    • 2005.11a
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    • pp.306-310
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    • 2005
  • The air-side particulate fouling in the heat exchangers of HVAC applications degrades the performance of cooling capacity, pressure drop across a heat exchanger, and indoor air quality. Indoor and outdoor air contaminants foul heat exchangers. An empirical modeling equation is derived from the experimental results using accelerated tests and it shows good predictions of the fouling characteristics of the slitted finned tube heat exchangers. However the modeling equation predicts only the fouling characteristics of new heat exchangers and it can not predicts fouling characteristics obtained from actual field data. The purpose of this study is to modify the previous modeling equation using the actual field data Therefore an modified modeling equation is proposed and it shows good predictions of the actual fouling characteristics of finned-tube heat exchangers.

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A Study on the Automation Process of BIM Library Creation of Air Handling Unit - Development of Revit API module for efficiency and uniformity of library creation - (공기조화기의 BIM 라이브러리 생성 자동화 프로세스에 관한 연구 - 라이브러리 생성의 효율성과 통일성 확보를 위한 Revit API 모듈 개발 -)

  • Kim, Han-Joo;Choi, Myung-Hwan;Kim, Jay-Jung
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.34 no.4
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    • pp.75-82
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    • 2018
  • BIM(Building Information Modeling) based design process can initiatively conduct a task through all phases from early design step to construction and maintenance step. Also BIM efficiently manage the building's energy by reflecting 3D design and construction life cycle. This paper proposes an efficient process to build AHU's BIM-based library. This study involves analyzing an AHU model for development of design module, and making the template model using the same 12 parts including the shapes of ducts, doors and frames. In consideration of each shape's direction and the status of existence, which are detailed shapes of parts upon making the template model, all the shapes of the AHU model can be expressed. By applying parametric modeling to the template model, a quick and precise modification and transformation can be conducted, thus the efficiency is enhanced. A user selects an AHU model from a 2D model selection program, and extracts shape information. The final AHU shape is completed through the automation work of unnecessary shape deletion by bringing the extracted shape information to the template model. This enables the user to build efficient AHU's BIM-based library, since the quick and precise modification and transformation of the template model are possibile, and all AHU model shapes can be expressed.

A study on the comparison of the performance of a heat pump system with air and water heat sources (공기열원 및 수열원을 이용한 열펌프 시스템의 성능특성에 관한 연구)

  • Ko, Won-Bin;Park, Youn-Cheol
    • Journal of Advanced Marine Engineering and Technology
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    • v.40 no.7
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    • pp.563-568
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    • 2016
  • In this study, experiments were conducted to evaluate the performance of a heat pump system. A heat pump system with an air as heat source is adapted as reference. The developed system uses a plate heat exchanger an evaporator to absorb heat from a stack of fuel cell driven electric vehicles. Hence, the system functions as a water source heat pump system. The results indicated that the; power consumption increased with the rotational speed of the compressor. A system performance($COP_h$) of 2.03 at an electronic expansion valve(EEV) openings of 25% and a compressor speed of 1200 rpm was observed in the reference system. However, at the same compressor speed, the $COP_h$ of the water source heat pump system corresponded to 9.42 at an EEV openings of 75%. It was found that the water source heat pump system exhibited the highest performance at a water temperature of $50^{\circ}C$.

Design Development of wall mount type air purifier (벽걸이 형식을 도입한 공기청정기 디자인 개발)

  • Han, Il-Woo
    • Archives of design research
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    • v.18 no.3 s.61
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    • pp.219-222
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    • 2005
  • This study is for the design developement of wall mount air purification device used for pleasant and clean resident environment. As more people have the high standard of living, they are interested in the air quality of indoor environment, since it is believed its relationship with human health. Now the social demand of air purifier is increasing. Its market is growing and there are various design products in the market. However, dominant current products are floor-based standing type, it needs much spaces to install for the air inhalation and exhaust. Therefore, this product provides the space-saved design. Its concept comes from existing wall mount type air conditioners. The effect of wall decoration is another merit of this proposal. It has an easy filtering change and cleaning system and a simple operation of multiple functions. This product also has the perfect-matched slim design that is consist of natural curves with rectangle for any indoor spaces.

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