geothermal heating / geothermal heat pumps
DESCRIPTION
Geothermal Heating / Geothermal Heat Pumps. Allie Paccadolmi. How T hey Work. “Split System” – outdoor unit (condenser) and indoor unit (evaporator coil) Compressor changes gaseous refrigerant to high pressure gas Refrigerant cools and changes into a high temp gas - PowerPoint PPT PresentationTRANSCRIPT
Geothermal Heating / Geothermal Heat Pumps
Allie Paccadolmi
How They Work“Split System” – outdoor unit (condenser)
and indoor unit (evaporator coil)Compressor changes gaseous
refrigerant to high pressure gasRefrigerant cools and changes into a high
temp gasLiquid refrigerant expands and turns into
gas – gas then absorbs heat from circulating air
AdvantagesTwice as efficient as the top-rated air
conditionersEnergy costs are 30-70% lowerReduces greenhouse gas emissions
equivalent to planting 750 trees
DisadvantagesInitial cost is high two to three times higher
than a conventional heating/cooling systemOpen-loop systems – bring in water from
outside, can lead to clogging, mineral deposits, or corrosion of pipes
Impact on the Environment?Reduces greenhouse gas emissions
5.9 million CO2 emissions cut 1.6 million C emissions cut
Compared to other Energy SourcesLasts longer – abt 50 years longerNo gas lines – no potential for leakage or fire
RestrictionsOpen-loop systems: need a large supply of
clean water to be most efficientLimits use in coastal, lake, and river areas
FactsTakes only 1 kW/hr for a geothermal heat
pump to produce nearly 12,000 Btu of cooling or heating. (To produce the same number of Btus, a standard heat pump consumes 2.2 kilowatt-hours.)
50% more efficient than the best gas furnaces
70% of energy used in a geothermal heat pump system is renewable energy from the ground
Websiteshttp://climatelab.org/Geothermal_Heat_Pump
s http://www.residential.carrier.com/products/g
eothermalheatpumps/index.shtml
http://www.consumerenergycenter.org/home/heating_cooling/geothermal.html
http://www.thisoldhouse.com/toh/article/0,,20162296,00.html