greenhouse heating 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

  • Wireless Greenhouse Monitoring and Control

    CAS DataLoggers Provides the Intelligent Automated Solution A fruit crop experiment station needed to remotely monitor and control its climate systems in a number of greenhouses.  The proposed system needed to monitor soil moisture content and temperature and actively control irrigation and airflow by opening and closing windows to ensure that the appropriate temperature was ...


    By CAS DATALOGGERS

  • Greenhouse Gases-California-Things to Know

    Here are some things to know about California Gov. Jerry Brown's new target for reducing carbon emissions that contribute to climate change. WHAT DO THE NUMBERS MEAN? Brown set a goal for the state to reduce emissions to 40 percent below what they were in 1990. Countries set that year as a benchmark for climate change when they signed on to the U.N. Kyoto Protocol, an ...


    By Associated Press

  • The impact of the oceans heating up

    Following the hottest July and August on record, the earth’s rising temperature is having a number of knock on effects on rising ocean water temperatures around the world. A new study by The International Union for the Conservation of Nature has described rising ocean temperatures as “the greatest hidden challenge of our generation,” and outlined findings that indicate that ...


    By Aquaread Limited

  • Les Chênes Verts, Eiffage, greenhouse cogeneration plant - Case Study

    Chênes Verts Energie has awarded Eiffage Energie as the main contractor of the renovation of an older generation greenhouse cogenerationplant in Chenes Verts’s  ...


    By Clarke Energy

  • Reporting of greenhouse gases (GHGs) to be mandated for top 13,000 facilities

    The newly formed Obama administration has listed greenhouse gas (GHG) tracking and reporting as a major goal, with the objective of protecting the future of the environment by reducing today's carbon footprint. If no action were taken, the makeup of the earth would significantly altered. Future actions will establish a market drive carbon cap and trade program to drive GHG emissions ...


    By Verisae

  • From Landfill to the Tomato Plant -- Purified Biogas Powers Greenhouse Operation

    In 2009, the Board of Waste Management for the Mauricie region of Quebec, Canada (RGMRM) found a biogas purification solution through an Eco-Tec Inc. system known as BgPur, which uses a patented, high efficiency gas-liquid contacting process, allowing H2S to be absorbed and the gas purified for reuse in power generation, cogeneration and heating applications. The aim was to purify the landfill ...


    By Eco-Tec Inc.

  • Thermodynamic limitations to nuclear energy deployment as a greenhouse gas mitigation technology

    To both replace fossil-fuel-energy use and meet the future energy demands, nuclear energy production would have to increase by 10.5% per year from 2010 to 2050. This large growth rate creates a cannibalistic effect, where nuclear energy must be used to supply the energy for future nuclear power plants. This study showed that the limit of ore grade to offset greenhouse gas emissions is ...


    By Inderscience Publishers

  • Commission Calls for New Policies as EU Greenhouse Gases Rise Again

    EU greenhouse gas emissions rose for the second successive year in 2001, raising concerns over progress towards targets under the Kyoto Protocol. The European Commission has responded with a call for 'additional measures' to cut emissions from industry, transport and products. Under the Kyoto Protocol, the EU signed up to reduce its greenhouse gas emissions to 8% below the 1990 level by 2008-12. ...

  • 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

  • New EPA ruling deems greenhouse gases (GHGs) harmful to humans

    Greenhouse Gases (GHGs) will be categorized as a pollutant following the US Supreme Court's landmark notice approving the Environmental Protection Agency’s (EPA) ruling. The gases harm the environment as they have proved to increase heat trapping chemicals in the atmosphere. These chemicals, commonly taking the form of refrigerant gases, originate from a variety of systems, including ...


    By Verisae

  • Evaluation of convective heat and mass transfer in Open Sun and Green House Drying

    In this paper, a study on open sun and green house drying has been performed to evaluate the convective heat and mass transfer coefficients as a function of climatic parameters. The hourly data for the rate of moisture removal, crop temperature, relative humidity inside greenhouse and outside greenhouse and ambient air temperature for complete drying have been recorded. The experiments were done ...


    By Inderscience Publishers

  • Impact of energy efficiency upgrade retrofits on the residential energy consumption and Greenhouse Gas emissions in Canada

    The impact of various energy efficiency upgrade scenarios on the annual energy consumption and Greenhouse Gas emissions of the Canadian housing stock is assessed using the Canadian Residential Energy End-use Model (CREEM). The energy efficiency upgrade scenarios that are considered include major retrofits, such as the improvement of the house envelope by adding insulation, and the replacement of ...


    By Inderscience Publishers

  • Formation and emissions of ammonia and greenhouse gases from stored and composted solid animal manure

    Beside other branches of industry, agriculture is an important source of methane (CH4) and nitrous oxide (N2O) emissions and the most important source of ammonia (NH3). In spite of several investigations concerning ammonia and greenhouse gas emissions during storage and composting of liquid and solid animal manure, the real extent of these emissions is still unknown. This is mainly because of the ...


    By ORBIT e.V.

  • Case study - Smith Gardens, Inc., Bellingham, Washington, USA

    “In 1993, Sid Abma installed a new 350 HP boiler along with his SRU stack recovery condenser, to heat a section of our greenhouses in Bellingham, Washington. While the boiler requires yearly service and maintenance, the condenser requires no maintenance. It just sits on the floor next to the boiler and gives us free heat. Sid was able to pipe the condenser in a way that takes maximum ...


    By Sidel Systems USA Inc.

  • Decreased cost price advantage of gas CHP use

    From the new Quantitative Information of the Greenhouse Horticulture prove the differences in cost between whether or not CHP use almost to fall away, the carbon footprint using CHP for the heat demand remains more favorable. At different crops is the average realized sales price below the economic cost price. The scale of the companies continues to increase; the NL acreage of the main crops is ...

  • Fluidised bed combustion and gasification of rice husk and rice straw – a state of art review

    Rice is cultivated in all the main regions of world. The worldwide annual rice production is 666 million tons for the year 2008. The combustion and gasification of rice husk/rice straw in fluidised bed reactors seems to be an attractive possibility of future for power generation, the solution of waste disposal problems and the reduction of greenhouse gases. In this paper, overview of fluidised ...


    By Inderscience Publishers

  • Case study - Pelton Reforestation Ltd., Maple Ridge, British Columbia, Canada

    “In 1986 our company used Sidel Systems to design and install a complete hot water heating system in our 135,000 sq./ft. greenhouse. The system was comprised of 51mm heating loops, headers with computer controlled mixing valves, and a 500 HP gas fires Cleaver Brooks Boiler outfitted with a matching flue gas condenser unit. Over the next 3 years we added additional greenhouse space and the ...


    By Sidel Systems USA Inc.

  • Composting and local food merge st urban garden

    Growing Power (GP), a nonprofit urban garden and training center in Milwaukee, Wisconsin, provides affordable produce to neighborhoods without access to fresh food, and processes a variety of organic wastes through composting and anaerobic digestion. Located on a two-acre lot on Milwaukee's north side, the six greenhouses and several hoop houses include raised beds for herbs and greens, ...


    By BioCycle Magazine

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