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Mathematical Model of Electric Vehicle Power Consumption for Traveling and Air-Conditioning

Journal of Energy and Power Engineering 2015年第3期9卷 269-275页

作者： seishiro shibata tsuguhiko nakagawa Department of Thermal Engineering Graduate School of Okayama Prefectural University Okayama 719-1197 Japan

In order to make maximum use of the EV （electric vehicle） battery, evaluating the remaining battery capacity and the power consumption is important. Evaluation method of the remaining battery capacity with accuracy has been proposed. Moreover, the evaluation method of the power consumption for traveling has been proposed. However, the power consumption for vehicle-mounted air-conditioner is 30%. It is necessary to calculate the power consumption for both traveling and air-conditioning. In this paper, the authors have constructed a mathematical model which calculates the EV power consumption for both traveling and air-conditioning. The calculated results of this model have been compared to actual traveling data. In addition, factors which have a impact on the EV power consumption have been studied. As a result, the EV power consumption is greately varied by slope resistance, acceleration resistance and required air-conditioning load. Moreover, it is clarified that the air-conditioner consumes approximately 25% to 50% of the total power consumption in a hot summer day. In addition, the acceleration and the air-conditioning load differ depending on each vehicle driver. Therefore, in order to evaluate the EV power consumption practically, it is necessary to reflect the characteristics of each vehicle driver.

关键词： Electric vehicle air-conditioner energy consumption mathematical model cruising range.

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A Novel Concept of AI-EV （Air-Conditioner Integrated Electric Vehicle） for the Advanced Smart Community

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Journal of Energy and Power Engineering 2014年第11期8卷 1933-1941页

作者： Yu Notoji tsuguhiko nakagawa Department of Thermal Engineering Graduate School of Okayama Prefectural University Kuboki 111 Japan

In order to expand the natural energy and the energy conservation, ＂the smart PV （photovoltaic power generation）＆ EV （electric vehicle） system＂ has been proposed and the effect has been clarified. In the smart PV ＆ EV system, it is important that electric vehicles become popular. Therefore, the AI-EV （air-conditioner integrated electric vehicle） has been proposed. In this paper, the AI-EV is designed based on the required car air-conditioner capacity. And, the value of AI-EV is compared with a gasoline vehicle, HV （hybrid vehicle） and EV using the mathematical simulation model As a result, it is clarified that the minimum displacement of the small-engine is 120 cc for AI-EV. In the smart PV ＆ EV system, AI-EV can reduce CO_2 emissions by 20% almost the same as EV. Additionally, AI-EV is able to gain the cruising range more than twice as long as EV.

关键词： Electric vehicle air-conditioner CO_2 emissions smart community.

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Development of Adsorption Steam Generator without the Fossil Fuels Consumption

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Journal of Energy and Power Engineering 2014年第4期8卷 589-595页

作者： tsuguhiko nakagawa Takahiro Nishi Yu Notoji Yoshiaki Kawakami Masayuki Tanino Yoshio Abe Kasumi Ito Kenji Marumo Toshiyuki Aoyama Yoshinori Itaya Kouichi Nakaso Jun Fukai Department of System Engineering Okayama Prefectural University Okayama 719-1197 Japan Multidiscipline Laboratory Takasago Thermal Engineering Co. Ltd Kanagawa 243-0213 Japan Project Department of Environment and Energy Solution ThyssenKrupp Otto Tokyo 107-0052 Japan Department of Production Engineering Morimatsu Industry Co. Ltd. Gifu 501-0413 Japan Department of Engineering Gifu University Gifu 501-1193 Japan Faculty of Engineering Kyushu University Fukuoka 819-0395 Japan

Reducing CO2 emissions and restraining dependence on nuclear power generation are serious concerns in the prevention of global warming since the Great East Japan Earthquake. To do so, it is necessary to use and expand natural renewable energy source such as solar energy and to promote energy conservation. However, in high-latitude regions, it is difficult to directly and effectively use solar power due to on insufficient amount of solar radiation. If steam can be generated from warm water at less than 373 K, it is possible to obtain steam by solar water heaters from weak solar radiation and industrial waste warm water without the consumption of any fossil fuels. In this study, the authors have been developing a system which generates steam over 423 K from warm water at less than 373 K using an adsorption heat pump with zeolite. Therefore, bench-scale equipment which generates steam continuously and the experimental results are mentioned.

关键词： Steam generation heat pump solar thermal utilization energy conservation.

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