• 제목/요약/키워드: main cooling S. W. pump

검색결과 2건 처리시간 0.019초

선박용 펌프의 소개 (An Introduction of Pumps Installed for Marine Use)

  • 이상일;이영호;김유택
    • 유체기계공업학회:학술대회논문집
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    • 유체기계공업학회 2006년 제4회 한국유체공학학술대회 논문집
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    • pp.363-366
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    • 2006
  • Various kinds of ships(Cargo ship, Passenger ship, Training ship, Special ship etc.) are operated to transport cargo or passengers at sea in the world. Most of the important auxiliary machinery which is installed are fluid machinery in those ships. A large percentage of fluid machinery is pumps which are classified turbo and non-turbo type. While much previous research has focused on pumps for shore use, very little is known about ship's pump. In order to develop an understanding of ship's pump, we introduce common pumps used in every ship and special pumps based on ship's type. This exploratory study lays the groundwork for further investigation of ship's pumps

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온실 냉난방을 위한 연료전지 기반 열병합 발전 시스템 (Fuel Cell-based Cogeneration System for Greenhouse Cooling and Heating)

  • 박진영;뚜안앵;박승용;이동근;배용균;김영상;이상민
    • 한국수소및신에너지학회논문집
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    • 제34권6호
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    • pp.667-672
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    • 2023
  • This study proposes polymer electrolyte membrane fuel cell (PEMFC) based cogeneration system for greenhouse heating and cooling. The main scope of this study is to examine the proposed cogeneration system's suitability for the 660 m2-class greenhouse. A 25 kW PEMFC system generates electricity for two identical air-cooled heat pumps, each with a nominal heating capacity of 70 kW and a cooling capacity of 65 kW. Heat recovered from the fuel cell supports the heat pump, supplying hot water to the greenhouse. In cooling mode, the adsorption system provides cold water to the greenhouse using recovered heat from the fuel cell. As a result, the cogeneration system satisfies both heating and cooling capability, performing 175 and 145 kW, respectively.