期刊
ENERGY
卷 223, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.120011
关键词
Solar heat for industrial processes; Linear Fresnel collectors; Direct solar air heating; Solar Brayton cycle; Industrial drying
资金
- Industrial Ph.D. program of Comunidad de Madrid, Spain [IND2017/AMB7769]
- CORFO (Corporacion de Fomento de la Produccion) [13CEI221803]
The study examines an innovative concentrating solar thermal system for the direct production of hot air for industrial applications. By utilizing linear Fresnel collectors and matching them with automotive turbochargers, the system successfully avoids auxiliary energy consumption and provides a stable output of hot air.
The study analyzes an innovative concentrating solar thermal system aimed at the direct production of hot air for industrial applications. Air is heated inside linear Fresnel collectors in an open to atmosphere circuit, not requiring the use of a primary heat transfer fluid and a heat exchanger, with their associated cost and maintenance. Matching an automotive turbocharger with the solar field avoids auxiliary energy consumption for pumping the airflow. The detailed quasi-steady numerical model implemented, including commercial collector and turbocharger technical features, allows to scrutinize the daily and yearly operating time profile of a medium scale plant with a 633.6 m(2) solar field. Considering the typical meteorological year of the selected location (Madrid, Spain), the numerical results indicate that hot air is provided at a remarkable quasi-constant temperature between 300 degrees C and 400 degrees C despite the solar variations, delivering 330 MW h per year without overheating the receiver evacuated tubes. (C) 2021 Elsevier Ltd. All rights reserved.
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