Geothermal Exchange Heat Pumps

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Geothermal Exchange Heat Pumps. Jordan Harris 4M-C. Objectives. What is a HEAT PUMP? What is Geothermal exchange? Air vs. water Closed vs. open system Heating and cooling mode Sources. What is a heat pump. Moves heat rather than burning a fuel Opposite of Air conditioning - PowerPoint PPT Presentation

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  • Geothermal Exchange Heat PumpsJordan Harris4M-C

  • ObjectivesWhat is a HEAT PUMP?What is Geothermal exchange? Air vs. waterClosed vs. open systemHeating and cooling modeSources

  • What is a heat pumpMoves heat rather than burning a fuelOpposite of Air conditioningRemoves heat from source to deliver to desired heating areaFluid expanded, forcibly condensed to release heat, gains more

  • What is Geothermal ExchangeUsing the Earth as a heat source or a heat sinkConsists of a loop of pipe, a compressor, and a pumpPipe is installed below the frost lineIdeal, temperatures below ground are fairly constant70% of energy used is renewable energy from the ground

  • Air vs. WaterTraditional air conditioning uses air as a mediumGeothermal exchange pumps use water Water can store 3472 times more heat than airWater requires less energy to move,

    One cubic foot of water3472 cubic feet of air

  • Open vs. Closed LoopsOpenLoop between a water source and a discharge areaHigher performanceWater needs to be analyzed and treated (for corrosives, acid, abrasives)Cost of pumping is higher

  • Open vs. Closed LoopsClosed Water is re-circulatedNo new water is introducedHeat is transferred through the walls of pipeHigh installation cost, low pumping cost

  • Heating and CoolingHeatingFluid is drawn from the earth - is expanded to vapour in heat exchanger forced to compress in compressor releases heat returned to earthCoolingOpposite.

  • Sourceshttp://www.geothermalheatpump.com/how.htmhttp://en.wikipedia.org/wiki/Geothermal_exchange_heat_pumphttp://home.howstuffworks.com/question49.htmhttp://home.howstuffworks.com/ac.htm

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