Articles
Influence of a passive heating system that combines heat accumulators and thermal screen on the greenhouse microclimate
Article number
1271_6
Pages
41 – 46
Language
English
Abstract
The Mediterranean horticulture currently uses low technology greenhouses, which means that the productive results are far from their potential due to the climatological characteristics of the area.
During the periods when minimum air temperatures are a limiting factor for yield of the horticultural crops under greenhouse, the heat accumulation by water filled NIR absorbing polyethylene sleeves have showed a positive effect.
In this work the combination of this system with the use of thermal screen is evaluated.
A positive effect of both installations has been observed which leads to an increase in nighttime air temperature higher than 3°C. A good linear relationship has been shown between the daily global radiation and the maximum increase in water temperature in the heat accumulators.
The sustainability of this alternative system for heating makes it interesting for its implementation in the Mediterranean greenhouse.
During the periods when minimum air temperatures are a limiting factor for yield of the horticultural crops under greenhouse, the heat accumulation by water filled NIR absorbing polyethylene sleeves have showed a positive effect.
In this work the combination of this system with the use of thermal screen is evaluated.
A positive effect of both installations has been observed which leads to an increase in nighttime air temperature higher than 3°C. A good linear relationship has been shown between the daily global radiation and the maximum increase in water temperature in the heat accumulators.
The sustainability of this alternative system for heating makes it interesting for its implementation in the Mediterranean greenhouse.
Authors
M.C. Sánchez-Guerrero, E. Medrano, P. Fernández-del Olmo, P. Lorenzo
Keywords
temperature, radiation, passive heating, NIR absorbing, pepper
Groups involved
- Division Greenhouse and Indoor Production Horticulture
- Division Precision Horticulture and Engineering
- Division Plant-Environment Interactions in Field Systems
- Working Group Nettings in Horticulture (subgroup of Protected Cultivation in Mild Winter Climates)
- Working Group Light in Horticulture
- Working Group Organic Greenhouse Horticulture
- Working Group Modelling Plant Growth, Environmental Control, Greenhouse Environment
- Working Group Protected Cultivation, Nettings and Screens for Mild Climates
- Working Group Vegetable Grafting
- Working Group Computational Fluid Dynamics in Agriculture
- Working Group Design and Automation in Integrated Indoor Production Systems
- Working Group Mechanization, Digitization, Sensing and Robotics
- Working Group Greenhouse Environment and Climate Control
- Commission Agroecology and Organic Farming Systems
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