"Free energy" from renewable sources.

Calculation of kinetic energy of the wind upon our parcel

The formula for full wind kinetic power:

W=0.5*Ro*A*(V**3),

where:

W is full kinetic power of wind flow [Watt]
Ro is air density (1.225 kilograms per cubic metre)
A is area [square metre]
V is wind speed on the area A [metre per second]

See Wikipedia
Wind power
Wind turbine design

Maximal available area upon parcel is 46 metres length x 8 metres height (line east-west), minimal area is 12 metres length x 8 metres height (line south-north) - 96 sqm. For minimal air area, wind power is:

Average wind speed for the parcel is (approximately) 4 metre per second; average wind power is 3.76 kilowatts.
Energy per year is 33000 kilowatt-hours (KWh).

Ground head energy under our parcel
(Geothermal energy)

Ground heat capacity: 0.8 KJ/(Kg*K)
Ground mass for 10 m depth: 12000 tonnes
Temperature at the depth of ten metres: 10 degrees C
If we will cool the ground to 0 degree C or will heat it to 20 degrees C, geothermal energy will be 96000 Mega Joules.

For half a year (opposite phase of ground-air temperature) energy per day is:
527 MJ per day or
22 MJ per hour or
heat power 6.1 KW

Air heat energy under the parcel

Heat capacity of air: 1 KJ/(Kg*K)
Density of air is about 1.2 kg/m3>
Air mass upon the parcel for altitude 10 m: 8160 kg
Heat energy (heating/cooling air mass to 10 degrees C): 81.6 MJ
For wind 4 metre per second: every 6.5 seconds - "new air mass" - heat power is 12 MegaWatts.

Solar power

Parcel area is 680 sqm.
Year average solar power (clear sky, during day) is approximately 800 Watts/m2 (for land area). If during 1/3 of days are clouds or fog (days without direct sunlight): solar energy (year average and day average) is 180 KWatt.

Attention

All data are approximate!

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