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Neiker-Tecnalia creates air-conditioned greenhouse with alternative energies
Date:2/2/2011

Neiker-Tecnalia (The Basque Institute for Agricultural Research and Development) has created an air-conditioned greenhouse using alternative energies that enable the reduction of energy costs, improvements in energy efficiency and an increase in crop yields. The novel system has a biomass boiler and thermodynamic solar panels, which reach an optimum temperature for the crop without using fuels derived from petroleum oil or gas.

Neiker-Tecnalia has installed a biomass boiler (using wood and other organic waste as fuel), together with thermodynamic panels, with the goal of air-conditioning greenhouses destined for intensive crop cultivation. With this method they have managed to reduce costs and improve crop yields, in such a way that seasonal products can be harvested throughout the year. This project seeks an alternative to the usual diesel or heating oil boilers, which emit significant amounts of CO2 to the atmosphere and are very costly for the farmer, given the high price of petroleum oil-derived fuels.

400 kW power

The project was undertaken at a greenhouse in NEIKER-Tecnalia located in Derio, in the Basque province of Bizkaia and near Bilbao. A biomass boiler which produces 400 kW power and is, to date, the largest in Spain using air-conditioning in greenhouses was installed. With the boiler there are 40 thermodynamic panels, employed for the first time in intensive greenhouse cultivation. The combination of both energies act to heat the water which circulates in tubes located a few centimetres above the floor and below the substrate of the crop, the aim being to heat the roots.

The tubes, distributed throughout the whole surface of the greenhouse, transport water at an average temperature of 80 degrees centigrade. Thus optimum air-conditioning for greenhouses is achieved, with the result that the plants grow as in the natural production period. Achieving less expenditure in consumption and having seaso
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Contact: Amaia Portugal
a.portugal@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

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