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System for hothouse heating during nighttime by solar radiation energy stored during daytime

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Chemical and Petroleum Engineering Aims and scope

Patent search has been performed and the most efficient design of radiative heat exchanger usable in hothouse heating system has been chosen. A system has been built for stabilizing hothouse temperature during nighttime with natural heat carrier circulation. The loop for daytime operation of the system has been improved: for the first time cones that equalize the temperature field of the heat carrier have been placed at the storage tank inlet and outlet, and a mathematical model of daytime operation of the system has been built with due regard for the functioning of the cones. A procedure has been proposed for hour-by-hour determination of the total solar radiation incident on an inclined plane taking account of cloudiness, which helps find the optimum plane inclination angle. A procedure has been worked out to calculate the nighttime performance of the system, and rational heat stabilization parameters of the system, type of heat carrier, area of the radiative heat exchanger, volume of the storage tank, and dimensions of the hothouse have been determined. The theoretical data obtained by calculation of the system have been compared with the experimental data. The discrepancy between the experimental and calculated data was about 2–3 %.

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Authors and Affiliations

  1. Bauman Moscow State Technical University, Moscow, Russia

    D. V. Samoilov

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  1. D. V. Samoilov
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 9, pp. 12–15, September, 2008.

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Samoilov, D.V. System for hothouse heating during nighttime by solar radiation energy stored during daytime. Chem Petrol Eng 44, 503–509 (2008). https://doi.org/10.1007/s10556-008-9091-x

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  • DOI: https://doi.org/10.1007/s10556-008-9091-x

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