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The Living Rainforest Sustainable Greenhouses

The Living Rainforest Sustainable Greenhouses. Gerard Bot 1 , Karl Hansen 2 , Andrew Logan 2 , Henk Witte 3 and Feije de Zwart 1 1 Wageningen UR Greenhouse Horticulture 2 The Living Rainforest, Hampstead Norris, UK

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The Living Rainforest Sustainable Greenhouses

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  1. The Living Rainforest Sustainable Greenhouses Gerard Bot1, Karl Hansen2, Andrew Logan2, Henk Witte3 and Feije de Zwart1 1 Wageningen UR Greenhouse Horticulture 2 The Living Rainforest, Hampstead Norris, UK 3 Groenholland, Amsterdam, The Netherlands

  2. Introduction • Sustainable greenhouses • Seasonal energy storage • To be realised • Link to production greenhouses

  3. Introduction The Living Rainforest? • Charity, demonstrates the ecology of the living rainforest to the general public • renovation of existing buildings: show case for sustainability • demonstrate the link between ecology and sustainability

  4. Sustainable greenhouses • Greenhouse properties for low heat demand: cover insulation • energy friendly climate control: climate settings and strategy • efficient conversion of primary energy to heat the “engine” of the greenhouse

  5. 100 Rel. Econs (%) 80 60 boiler 40 20 0 0 1 2 3 4 5 6 k (W/m2K) Cover insulation and heat demand

  6. 100 Rel. Econs (%) 80 60 boiler 40 20 0 0 1 2 3 4 5 6 k (W/m2K) Cover insulation and heat demand

  7. heat-demand heat demand Heat Pump energy in: work seasonal storage energy in: boiler

  8. Cover insulation and heat demand

  9. Seasonal storage • Aquifer: 2 wells at different temperature

  10. Summer period: excess heat filling warm aquifer emptying cold aquifer (greenhouse is cooled) heat exchanger 7 oC 17 oC

  11. Winter period heat pump heat exchanger 17 oC 7 oC emptying warm aquifer: greenhouse is heated filling cold aquifer

  12. Seasonal storage • Aquifer: 2 wells at different temperature energy storage: specific geological conditions not available at TLR • Ground Source Heat Exchanger: passive storage via boreholes

  13. Heat Pump:

  14. Average GSHE fluid temperatures year 1 till 5for different strategies emphasis onheatingbalancedemphasis oncooling

  15. Average GSHE fluid temperature for year 1 to 25 (final stage) with emphasis on cooling the building Design: number of boreholes and depth from local geology and dynamic interaction of GSHE and greenhouse for 25 y

  16. To be realised: Cover: TLR light is not a bottle neck: k= 1.5 – 2 Wm-2K-1 Climate control: high RH desired Energy conversion:- GSHE + Heat Pump - wood fired boiler for back-up Energy system of greenhouses, offices and visitors centre integrated

  17. TLR show case production greenhouses: demonstrates sustainable operation visualises application bottlenecks general public:- principles applicable at home - link ecology and sustaibnability

  18. Thank you for your attention

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