アジア・オセアニア研究教育機構(Q-AOS)ポスターセッション

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4.CHEN HAONAN（Interdisciplinary Graduate School of Engineering Sciences / Master's Course）
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NUMERICAL ANALYSIS OF ISOTHERMAL MEMBRANE-BASED DEHUMIDIFICATION FOR M-CYCLE EVAPORATIVE COOLER

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Maisotsenko cycle (M-cycle) is an indirect evaporative cooling (IEC) method utilizing the latent heat of evaporation of water which can theoretically cool down air to its dew point temperature beyond its wet bulb temperature. M-cycle uses water as its refrigerant and consumes less energy, which is considered to have better environmental and economic benefit. In IEC systems, the lower humidity the lager cooling capacity. Membrane-based dehumidification can decrease the humidity of air in an isothermal manner by a vacuum pump. With high efficiency and no hydrochlorofluorocarbons (HCFCs), this green cooling system is expected to apply in the sustainable future society.

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Title
Trade off
Comment
Thank you for you presentation. To increase the reduction of electricity consumption, what aspect is the trade off between? What also are measures that you can take to maximize efficiency?
Name
Ueda
Date
2021/10/18
Title
High humidity air
Comment
Thank you for your poster presentation. How do you think the performance of this cooling system during the summer in Japan which has a high humidity? How much power can be saved by this system if we compare to the conventional cooling system by air conditioning?
Name
Suyantara
Date
2021/10/18
Title
Reply for Trade off
Comment
Thank you for your comment. To increase the reduciton of electricity consumption, the main trade off is between cooling capacity and system size. If the cannels are very long, such as more than 1 m, the cooler could achieve same performance with less electricity consumption.
Name
CHEN HAONAN
Date
2021/10/19
Title
Reply for High humidity air
Comment
Thank you for your comment. As what you said, Japan's humidity ratio is very high in summer. For example, average humidity in summer of Fukuoka is around 80%. Thus it is necessary to do dihumidification first. About how much power can be saved, it is depend on the air's condition and system size. Generally, set the convetional family air conditioner's COP is 3.5, which is a good product. This system's COP can reach to 3.8-4.6 (depend on the channel length). It means it can save 8%-31% electricity consumption.
Name
CHEN HAONAN
Date
2021/10/19