greenhouse cooling Articles

  • Greenhouse packs a power punch

    Closed loop system utilizes gasification, algae ponds and anaerobic digestion to convert wood waste to a variety of products, including biofuel, biogas and a soil amendment. MICHAEL Smith is supervising the first commercial-scale Green Power House at the F.H. Stoltze Land and Lumber Co. near Columbia Falls, Montana. Smith, a physicist, has designed a system to take waste products and turn them ...


    By BioCycle Magazine

  • Chicago Council lists three-decade changes in greenhouse gases and average temperature

    In 2011, we wrote a column, “Global warming is happening: How should farmers respond?” (http://agpolicy.org/weekcol/549.html). In that column we began by saying, “There was a time when one could legitimately argue that there was a lack of scientific agreement over the issue of the role of humans in global warming and even whether we were in a ...


    By National Farmers Union

  • Case study: AACAL, Amarillo ISD Amarillo, TX

    The Challenge: The Amarillo Area Center for Advanced Learning needed a solution for the hard water scaling issues they were experiencing in their greenhouse. The cool cell filter for the greenhouse’s cooling system had to be replaced every two weeks, the mist heads in the propagation tent required cleaning every few days and salt deposits were apparent on the plant cuttings. ...

  • Evaluating the role of vegetation on the ventilation performance in isolated deep street canyons

    Vegetation is generally considered as an essential component for a sustainable city as it helps improve its microclimate environment and reduce greenhouse gases emissions. However, there is some evidence suggesting that adverse effects may be caused by tree–planting in shallow urban street canyons. Accordingly, we intended to investigate whether similar observations are found for different canyon ...


    By Inderscience Publishers

  • Case study - Finally - a fan for the 21st century

    Travis Luther, owner of Forcefield, designs and builds Advanced Greenhouse Climate Solutions in southern Oregon, USA. He bought MagFans for his greenhouses and he is impressed with the powerful, efficient and quiet fan. - Being in a hot dry climate, we rely on evaporative cooling to keep the temperature from climbing to detrimental levels in the summer. This requires massive air flow to ...


    By DACS A/S

  • VeggieFresh LED grow lights help commercial growers increase revenue by 35%

    After 2 years of research, development, and testing, VeggieFresh LED announces arrival of their new line of commercial LED grow lights through VeggieFreshLED.com. Known for bringing innovative products to the commercial greenhouse marketplace, VeggieFresh is positioned to permanently alter how produce is grown on a large scale by showing grow operation ...


    By Veggie Fresh LED

  • Cooking under the sun

    A $6 cardboard box that uses solar power to cook food, sterilise water and could help 3 billion poor people cut greenhouse gases, has won a $75,000 prize for ideas to fight global warming.The 'Kyoto Box', named after the United Nations’ Kyoto Protocol that seeks to cut emissions of greenhouse gases, is aimed at billions of people who use firewood to cook.The cooker uses the greenhouse effect to ...


    By GLOBE SERIES

  • Methane flux in cropland and adjacent riparian buffers with different vegetation covers

    Received for publication September 12, 2008. While water quality functions of conservation buffers established adjacent to cropped fields have been widely documented, the relative contribution of these re-established perennial plant systems to greenhouse gases has not been completely documented. In the case of methane (CH4), these systems have the potential to serve as sinks of CH4 or may provide ...

  • Agriculture minimum temperature

     Agriculture minimum temperature Prediction of minimum temperature and frost damage is a common method and important application in the field of agriculture like outdoors crop growth. In particular those areas where vegetation can be exposed to low temperatures, frost can be disastrous for young vegetation or fruits.When the ...


    By Delta OHM S.r.L.

  • Have humans tilted the climate books out of balance?

    In the great book-keeping of climate change, scientists have just discovered a big mistake. They have been wrong, they now think, to count on the mountains, the plains, the forests and the grasslands as an agency that slows climate change by absorbing carbon dioxide. It does absorb carbon dioxide. But the chilling news is that  ...


    By Climate News Network

  • Correct management of ethylene levels could minimise or eliminate the need for refrigeration during the distribution chain of green bananas

    A recently published scientific article (Reduction of energy usage during storage and transport of bananas by management of exogenous ethylene levels, Wills et al; Postharvest Biology and Technology 89 (2014) 7-10) quantifies the relationship between the concentration of ethylene, temperature and green life of the Cavendish banana. The results demonstrate that an efficient ...


    By Bioconservacion SA

  • 2007 second warmest year on record

    With the record for 2007 now complete, it is clear that temperatures around the world are continuing their upward climb. The global average in 2007 was 14.73 degrees Celsius (58.5 degrees Fahrenheit)—the second warmest year on record, only 0.03 degrees Celsius behind the 2005 maximum. January 2007 was the hottest January ever measured, a full 0.23 degrees Celsius warmer than the previous record. ...


    By Earth Policy Institute

  • Demystifying Light Levels for Cannabis Grows

    As more and more investors, opportunists and growers are jumping onto the green rush that is the cannabis industry right now there is also a big influx of folks who are learning as they go.  Lighting is a major purchase for this industry as a big margin of growers still prefer the better climate control and security of growing indoors and even those who choose to grow in a greenhouse are ...


    By P.L. Light Systems Inc.

  • It’s time to stop overspending our freshwater budget

    If freshwater is to remain a renewable resource, we must balance supply and demand on farms, in cities, in industry and in power production. When you look to the year ahead, what do you see? Ensia recently invited eight global thought leaders to share their thoughts. In this interview with Ensia contributor Lisa Palmer, World Resources Institute Global Water Program director Betsy Otto responds ...


    By Ensia

  • Is zero deforestation possible for the Brazilian Amazon?

    Yes — if we make sure economic growth, social justice and agriculture are part of the picture. From 2005 to 2014, the rate of deforestation in the Amazon rainforest went from 19,014 square kilometers (7,342 square miles) to 5,012 square kilometers (1,935 square miles): a reduction of about 70 percent. Impressive, to be sure, but the rate still remains high. Additionally, ...


    By Ensia

  • A Short Payback Period for Illumitex LEDs vs. 1000 W HPS | White Paper

    Overview Growers interested in purchasing supplemental or sole-source lighting need to be able to accurately predict the economics and cost of ownership for the many different types of fixture layouts and options available on the market.  A useful financial estimate is the simple payback (or return on investment, ROI) of choosing one system over another.  The ROI takes into ...


    By Illumitex Inc.

  • Latest Developments in Mid-to-Large-Scale Vermicomposting

    Latest Developments in Mid-to-Large-Scale Vermicomposting This overview of systems and operational projects describes factors which contribute to their success as well as the challenges that have forced sites to close. Many different approaches are being used to process large volumes of organic residuals with earthworms, ranging from relatively simple land and labor-intensive ...


    By BioCycle Magazine

  • Closed loop system takes manure and methane

    A CONVERSION plant in Mead, Nebraska is processing manure and methane to create ethanol and compost. According to Nebraska Governor Dave Heineman: “This plant sets a new standard for ethanol production in this state and our nation, and is an example of the innovation needed to take this industry to the next level. It lets America get its automotive fuel from the croplands of the Midwest instead ...


    By BioCycle Magazine

  • Demystifying Light Levels for Cannabis Grows

    As more and more investors, opportunists and growers are jumping onto the green rush that is the cannabis industry right now there is also a big influx of folks who are learning as they go.  Lighting is a major purchase for this industry as a big margin of growers still prefer the better climate control and security of growing indoors and even those who choose to grow in a greenhouse are ...


    By P.L. Light Systems Inc.

  • Ontario Horticulture Research Priority Report 2016

    Sector Consultation The Ontario Fruit and Vegetable Growers Association partnered with Vineland to host a research strategy workshop in November 2014 with the goal of defining the top five research priorities for each crop group. Grower organizations were invited to nominate two representatives to participate on their behalf and a number of researchers from relevant fields were invited to ...

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