• Title, Summary, Keyword: Passenger cabin

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Study on the environmental performance test of cooling and heating equipments' of passenger cabin (철도차량 냉방 및 난방장치의 환경성능 시험방안 연구)

  • Cho, Young-Min;Lee, Jun-Seok;Park, Duck-Shin;Kwon, Soon-Bark;Jung, Woo-Sung
    • Proceedings of the KSR Conference
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    • pp.223-228
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    • 2009
  • Cooling and heating equipments of railroad passenger cabin is one of the most important part in keeping the good thermal comfort of the passengers. The bad performance of these equipments usually results in the comfort of the passengers. However, there is no testing method for cooling and heating equipments during manufacturing the passenger car, and calculation method is frequently used. Many railroad operators spend a lot of money for the maintenance. In this study, a new environmental performance test for railroad passenger cabin was suggested. The temperature of the chamber will be changed from $-40^{\circ}C$ to $60^{\circ}C$. The performance test of cooling and heating equipment in controlling the passenger cabin temperature was carried out under various temperature condition. The testing method to investigate the effect of artificial sunlight irradiation on the passenger cabin temperature was also suggested.

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The Study for Evaluation of Thermal Comfort in Passenger Cabin on Cruise Ship (크루즈선 객실의 공조 쾌적성 평가에 관한 연구)

  • Koo, Keun-Hae;Lee, Ho-Ki;Choi, Jae-Woong;Lee, Jae-Keun
    • Journal of the Society of Naval Architects of Korea
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    • v.48 no.1
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    • pp.62-66
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    • 2011
  • The present work focuses on the evaluation of thermal comfort in passenger cabin of a cruise ship. A computational fluid dynamics (CFD(Airpak)) is used to calculate air velocity and temperature distribution in the passenger cabin as well as PMV and PPD. The CFD is used to simulate two different cases, room unit system and wardrobe duct system. Both of cases are simulated in summer environment condition. The room unit system and wardrobe duct system are compared and evaluated by ISO 7730 thermal comfort categories. The performance of room unit system is shown to be more effective for this typical case of passenger cabin.

A Numerical Study on Air Distribution and Flow in the Passenger Cabin of a High-Speed Electric Train (고속전철 객실의 공기 분배 및 기류에 관한 수치해석적 연구)

  • Myong, Hyon-Kook;Yoo, Kyung-Hoon;Hwang, Jungho
    • Particle and aerosol research
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    • v.15 no.1
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    • pp.27-36
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    • 2019
  • Numerical analysis has been conducted on three-dimensional airflow distribution in the passenger cabin of a high-speed electric train. The types of air distribution systems investigated in the present study were those of TGV and Shinkansen. The Reynolds-averaged Navier-Stokes equations governing the mass and momentum conservations of the airflow in the cabin were solved by using a finite volume method, which are coupled with the standard $k-{\varepsilon}$ turbulence model equations. Predicted velocity distributions were presented on several selected planes in the passenger cabin. The present three-dimensional simulations were found to show the overall features of the airflow in the passenger cabin fairly well. In particular, it was shown that the type of air distribution for Shinkansen was more suitable for a non-smoking cabin than that for TGV.

Study on the volatile organic compounds and suspended microorganism in a high-speed train passenger cabin (고속열차 객실의 휘발성유기화합물 및 부유미생물 분석 연구)

  • Cho, Young-Min;Jung, Woo-Sung;Park, Duck-Shin;Kwon, Soon-Bark;Park, Eun-Young;Jung, Mi-Young;Mok, Jin-Yong;Lee, Jong-Beom
    • Proceedings of the KSR Conference
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    • pp.1045-1050
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    • 2008
  • The public interest on the indoor air quality of a high-speed train passenger cabin is drastically increasing due to the sealing of cabin. In this study, the concentration of volatile organic compounds and suspended microorganism in the high-speed train passenger cabin was investigated. There have been many studies on the indoor air quality of the high-speed passenger cabin, but the study on the indoor air quality without boarding of passengers were hardly carried out. As a result, it was very difficult to identify the exact source of air pollutants in the cabin. In this study, the indoor air quality of passenger cabin without any passengers was investigated so that the contribution of passengers as the source of various pollutants could be estimated.

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Analysis of basic IAQ management factors in KTX passenger cabin (KTX 객실의 IAQ 관리 기초 인자 분석)

  • Cho Young-Min;Park Duckshin;Park Byunghyun;Park Eunyoung
    • Proceedings of the KSR Conference
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    • pp.1153-1158
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    • 2005
  • The passenger cabin of train is generally insulated from exterior environment to ensure the safety of passengers and to enhance the heating and cooling efficiency. Therefore, the IAQ management of passenger cabin is very important in aspect of amenity and health of passengers. In this study, we measured some IAQ factors influencing on the indoor air quality of passenger cabin. The measurement was carried out to investigate the PM-10, PM-2.5, PM-1.0, temperature, relative humidity, carbon monoxide, carbon dioxide leves of KTX. The results showed that the air quality of the cabin was largely satisfactory, but carbon dioxide level was relatively higher. The control of carbon dioxide levels need the extensive research in the future.

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A Study on the Improvement Methods on Cabin Safety Actions in Aircraft Accidents -Focused on Cabin Crew Safety Performances & Passenger Perceptions of Cabin Safety Information - (항공기 비상사태에 대한 객실안전조치에 관한 연구 -객실승무원의 안전업무와 승객의 객실안전정보 인식을 중심으로-)

  • Yoo, Kyung-In;Yoo, Kwang-Eui;Lee, Chun-Ki
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.21 no.4
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    • pp.126-136
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    • 2013
  • Aircraft accidents these days, following the mega sizing trend of the aircraft, result in enormous losses of human lives apart from those of property, which cannot be replaced by any means. As most recently, in April 20, 2012, a Boeing 737 passenger plane departed Karachi on an augural flight to Islamabad, Pakistan, crashed close to an express highway on final approach, all 121 passengers and 6 crew members were killed. As such a large number of fatalities have been recorded in aircraft accidents while accident investigation results show that more than 95% of aircraft accidents are now survivable. There are three basic stages in surviving the aircraft accident: surviving the crash impact, the evacuation process and the hostile post evacuation environmental elements. These stages require the cabin crew's expeditious and appropriate actions on the basis of systematic and thorough cabin safety training in order to increase occupants' survivability, along with the passengers' preparedness. In this aspect, this paper examines the issues acting as the impediments to the passenger survival in inflight emergency situations, that are the deficiencies with cabin crew safety training, related performances and the shortcomings in passengers' knowledge on inflight safety information, leading to their inappropriate responses to emergency situations. These issues are analyzed and the root causes are identified, suggesting the resolving countermeasures.

Development of Amenity-Oriented Air Cleaning System for Railroad Passenger Cabin (객차용 청정시스템 개발)

  • Park, Duch-Shin;Cho, Young-Min;Kwon, Soon-Bark;Park, Eun-Young
    • Proceedings of the KSR Conference
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    • pp.1234-1239
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    • 2006
  • Because the indoors spaces of the passenger cabin is generally airtight to secure the safety of passengers and enhance the efficiency of the cabin air conditioning performances, the contamination pattern of them are largely similar to that of general indoor spaces. Therefore, continuous supply of outdoor air is required to keep the amenity of indoor space. Heating, ventilation, and air-conditioning (HVAC) system is composed of air cleaning filter, heater and air conditioned, blower and ducts. To achieve the clean indoor environment, an integrated control of each HVAC equipment are required. In this study, we developed the air cleaning system to enhance the amenity of the railroad passenger cabin.

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Development of Amenity-oriented Air Cleaning System for Railroad Passenger Cabin (철도차량용 공기청정시스템 개발)

  • Park, Duck-Shin;Cho, Young-Min;Kwon, Soon-Bark;Park, Eun-Young
    • Proceedings of the KSR Conference
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    • pp.1288-1292
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    • 2007
  • Because the indoor spaces of the passenger cabin is generally airtight to secure the safety of passengers and enhance the efficiency of the cabin air conditioning performances, the contamination pattern of them are largely similar to that of general indoor spaces. Therefore, continuous supply of outdoor air is required to keep the amenity of indoor space. Heating, ventilation, and air-conditioning (HVAC) system is composed of air cleaning filter, heater and air conditioned, blower and ducts. To achieve the clean indoor environment, an integrated control of each HVAC equipment are required. In this study, we developed the air cleaning system to enhance the amenity of the railroad passenger cabin.

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Study on the Removal of Carbon Dioxide in Passenger Cabin using Ion-Exchanged Zeolites (이온교환한 제올라이트를 이용한 객실용 이산화탄소 저감방안 연구)

  • Cho, Young-Min;Choi, Jin-Shik;Kwon, Soon-Bark;Park, Duck-Shin;Lee, Ji-Yun;Kim, Hee-Man
    • Proceedings of the KSR Conference
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    • pp.568-573
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    • 2011
  • Carbon dioxide concentration of railroad passenger cabin is obliged to be kept lower than guideline values of 'Indoor air quality guideline for public transportations', but actual carbon dioxide concentration frequently exceeds this guideline value. Ventilation is most desirable to lower carbon dioxide concentration but there are some cases when the ventilation is not applicable. In this study, carbon dioxide concentration control method using adsorbents was presented. The cation of zeolites were exchanged with various kinds of cations, and the carbon dioxide adsorption performance of the zeolites were studied. The various kinds of cations, solvents, and zeolites were introduced, and it was found that some cation-exchanged zeolites showed good carbon dioxide adsorption performances. It is expected that the obtained results will be used to lower carbon dioxide concentration of railroad passenger cabin.

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Study on the Adsorption of Carbon Dioxide in Passenger Cabin Using $Al_2O_3$ Adsorbent ($Al_2O_3$ 흡착제를 이용한 객실용 이산화탄소 흡착연구)

  • Cho, Young-Min;Choi, Jin-Sik;Lee, Ji-Yun;Kwon, Soon-Bark;Park, Duck-Shin
    • Proceedings of the KSR Conference
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    • pp.138-141
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    • 2011
  • Carbon dioxide concentration of railroad passenger cabin is obliged to be kept lower than guideline values of 'Indoor air quality guideline for public transportations', but actual carbon dioxide concentration frequently exceeds this guideline value during the morning and evening rush hours. For improving comfortability and satisfaction of passengers, concentration control method using $Al_2O_3$ adsorbents was presented. The adsorbent is made from $Al_2O_3$ and LiOH. $Al_2O_3$ perform as a frame and LiOH as a chemical adsorbent. The adsorbent performance experiment was carried out by measuring concentration change of Carbon dioxide in terms of flow, initial concentration and amount of adsorbent. It is expexted that the obtained results will be used to lower carbon dioxide concentration of railroad passenger cabin.

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