脱炭素エネルギー先導人材育成フェローシップ 2022年度
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wolle空調・給湯・照明等の建築由来の二酸化炭素排出量は、わが国全体の約34%にもなることから、建築にはZEBなどの高い目標が課せられています。室温制御のための顕熱負荷の削減は断熱・遮熱等の技術が進んでいますが、湿度制御については有効な対策が見当たらず、特に冷房時の潜熱負荷の低減が課題です。PSEは、本研究室が特許を有する太陽熱と大気放射冷却を利用して自然除湿するパッシブ・システムです。陳さんはPSEの実証実験と理論解析により優れた研究成果を上げており、革新的な研究者として今後の成長が期待されます。Q-Energy Innovator FellowshipCHEN Yulu11人間環境学府空間システム専攻博士後期課程2年人間環境学研究院 教授The Japanese government declared a carbon-neutral goal in October 2020 to reduce greenhouse gas emissions to zero by 2050. This includes the requirement to ensure that housing and buildings meet the standards of Zero Energy houses (ZEHs) / Zero Energy Buildings (ZEBs) and the introduction of renew-able energy sources. However, according to statistics, heating and cooling accounted for 27.5% of Japan’s household sector energy consumption in 2020. Many studies on heat collection in winter or natural cooling in summer using renewable energy have been conducted to reduce the energy consumption of HVAC systems such as Trombe walls, solar air-heating systems, and cool roofs. Furthermore, it is well known that controlling indoor humidity levels is the most prominent means of reducing latent heat load, especially in hot and humid summer areas. Indoor humidity is an essential criterion for indoor hygrothermal comfort.This study proposes an intelligent envelope system, which is a combination of a passive dehumidification and solar collection (PDSC) system and energy recovery ventilation (ERV), known as the PSE (PDSC combined with ERV) system. The PDSC sys-tem can perform passive dehumidification and radiative cooling in summer and solar-heating collection and humidity control in winter. ERV can recover (or release) energy (moisture and heat) from (or into) the return air (RA) while ventilating to reduce the ventilation load, thereby reducing the demand for the indoor air conditioning system. In order to investigate the effectiveness and practicality of the PSE system, field measurement experiments were conducted in a full-scale wooden house with a PSE system, and the temperature and humidity in the rooms were measured. The measurement results confirmed that the PSE system could reduce the indoor absolute humidity and maintain a stable and low indoor relative humidity within the comfort value specified in ASHRAE (40%~65%). Simulations were performed to further quantify the energy savings of the PSE system by using a simula-tion program called THERB for HAM, which was an unsteady computational simulation tool for evaluating the thermal envi-ronment of buildings. The simulation results showed that the PSE system could reduce the latent cooling load by 86% compared with a house installed with the exhaust-only ventilation system.指導教員からメッセージA photograph of attending the COBEE 2022 conference at Concordia University in Montreal, Canada, taken on July 28, 2022.尾崎 明仁Development of an intelligent envelope system combined with energy recovery ventilation for passive dehumidification in summer and solar collection in winter再生可能エネルギーを利用して室内温湿度を自然調節するPSEシステムの開発陳 雨露06f

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