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 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 seasonal crops all year round considerably reduces the price of the final product and, thus, enabling competition in the market with products coming from other zones.
The thermodynamic panels used generate energy thanks to the difference in temperature between a cold gas that circulates through a closed circuit and the ambient air temperature. They outstand for their low energy cost, as they are able to function in situations without sunlight and, thereby, produce energy both by day and by night. Moreover, it drastically reduces emissions of CO2 to the atmosphere. They are capable of heating water to 45 degrees centigrade and their cost per kilowatt consumed is 60 % less than the one generated by conventional diesel or heating oil boilers.
The biomass boiler used by Neiker-Tecnalia works with organic waste, such as almond nut shells, olive oil stones, tree pruning cuttings, the waste obtained from clearing forests, granulated pellets of sawdust, sawdust itself, wood shavings or any other leftover from the timber industry. The expenditure in fuel for the biomass boiler is 55 cents for kilowatt consumed, well below the 92 cents of a euro needed for boilers fed by petroleum oil-derived fuels or by natural gas or propane.
All this system involves a network of sensors (distributed throughout the greenhouse) that enables regulating the temperature of the market garden. The meters gather data in real time on the temperature and humidity of the crop zone. The data is sent to a computer which has software capable of programming different actions, such as increasing or reducing the temperature of the greenhouse or fixing the most appropriate hours for heating the plants.
Amaia Portugal | EurekAlert!
Alkaline soil, sensible sensor
03.08.2017 | American Society of Agronomy
New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences