geothermal exchange heat pumps

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Geothermal Exchange Heat Pumps Jordan Harris 4M-C

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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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Page 1: Geothermal Exchange Heat Pumps

Geothermal Exchange Heat Pumps

Jordan Harris

4M-C

Page 2: Geothermal Exchange Heat Pumps

Objectives

• What is a HEAT PUMP?

• What is Geothermal exchange?

• Air vs. water

• Closed vs. open system

• Heating and cooling mode

• Sources

Page 3: Geothermal Exchange Heat Pumps

What is a heat pump

• Moves heat rather than burning a fuel

• Opposite of Air conditioning

• Removes heat from source to deliver to desired heating area

• Fluid expanded, forcibly condensed to release heat, gains more

Page 4: Geothermal Exchange Heat Pumps

What is Geothermal Exchange

• Using the Earth as a heat source or a heat sink

• Consists of a loop of pipe, a compressor, and a pump

• Pipe is installed below the frost line• Ideal, temperatures below ground are

fairly constant• 70% of energy used is renewable energy

from the ground

Page 5: Geothermal Exchange Heat Pumps

Air vs. Water

• Traditional air conditioning uses air as a medium• Geothermal exchange pumps use water • Water can store 3472 times more heat than air• Water requires less energy to move,

One cubic foot of water

3472 cubic feet of air

Page 6: Geothermal Exchange Heat Pumps

Open vs. Closed Loops

• Open– Loop between a water

source and a discharge area

– Higher performance– Water needs to be

analyzed and treated (for corrosives, acid, abrasives)

– Cost of pumping is higher

Page 7: Geothermal Exchange Heat Pumps

Open vs. Closed Loops

• Closed – Water is re-circulated– No new water is

introduced– Heat is transferred

through the walls of pipe

– High installation cost, low pumping cost

Page 8: Geothermal Exchange Heat Pumps

Heating and Cooling

• Heating– Fluid is drawn from the

earth - is expanded to vapour in heat exchanger – forced to compress in compressor releases heat – returned to earth

• Cooling– Opposite.

Page 9: Geothermal Exchange Heat Pumps

Sources

• http://www.geothermalheatpump.com/how.htm

• http://en.wikipedia.org/wiki/Geothermal_exchange_heat_pump

• http://home.howstuffworks.com/question49.htm

• http://home.howstuffworks.com/ac.htm