Geothermal Heating And Cooling Systems
geothermal heating and cooling systems
WYANDOTTE: City breaks ground on area’s first geothermal utility
WYANDOTTE — The city has broken ground — literally and figuratively — on the area’s first geothermal utility.
How much heat can geothermal systems produce?
We want to build a home with a geothermal heating and cooling system in northwest Pennsylvania. Typically, the soil makeup in our area is quite a bit of clay, rocky with shale type rock. The house will have a total square footage of around 2400. What are some good options for types of systems and what could we expect as far as energy production. The kind of answer that would be most helpful would be helping us understand what indoor temperature we could expect in the winter (avg temps: high 45 low -10) and in summer (high – 100 low- 65).
Please excuse the vernacular! Thanks!
to produce the necessary amount of geothermal energy you need a large area of land as you notice on the heat heat flux Q = w/m2
fourier law of geothermal heat transfer
Q = (k)(TD)
Q = heat flux watt per m2 area w/m2
k = thermal conductivity of rocks = 3.0 w/m/K
K = temp in K
TD = temp gradient temp K per meter deep underground
TD = 0.01 K/m for 0-35km crust
TD = 0.0003 K/m for 35-2890km mantle rocks
K = 273 + C
Q = (3)(0.01)
Q = 0.03 w/m2
for 2400Sqft (223m2) of land
Q = 0.03*223 = 6.69 watt
you produced only 6 watts of power
the geothermal plant in california has 78 km^2 of land to produce 750Mw power output
Geothermal Heating & Cooling Systems by Total Heating & Cool
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