Effect of active solar heating system on microclimate, development, yield and fruit quality in greenhouse tomato production
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URI: http://hdl.handle.net/10835/15247
DOI: https://doi.org/10.1016/j.renene.2020.11.007
DOI: https://doi.org/10.1016/j.renene.2020.11.007
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2021Resumen
Heating greenhouses is essential to provide favorable climatic conditions for growing plants under cold periods. In this article, we have studied the performance of an Active Solar Heating System (ASHS) consisting of
two solar water heaters equipped with flat solar collectors, two storage tanks and exchanger pipes. During the
day, the water is heated in the thermosyphon solar collectors and stored in tanks before being placed into
circulation in the exchanger pipes to distribute the heat to the aerial and root zones of plants.
To assess the performance of the Active Solar Heating System, climatic and agronomic parameters
were monitored in two identical canarian greenhouses, one equipped with ASHS heater and the second
without. Experimental results show that the ASHS system improve the nocturnal climatic conditions
under greenhouse. The thermal comfort created by the ASHS system in root zone, increases the absorption of nutrients, which improve the external quality (color, size, ...
Palabra/s clave
solar energy
greenhouse heating
tomato production
greenhouses
tomato quality
energy saving