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Oreshak: old village, environs, nature
about our village
Oreshak

choosing a settling place in Varna region
the chronicle:
choosing a settling place
in Varna region

     

"Free energy" from renewable sources.

 

It is necessary in the current environment
 >>  Compliance with nature environmental laws - self-defense - self-sufficiency - independence - biological shelter. Self '.'
Self-defense, self-sufficiency, self... Independence, freedom and ecological shelter; as the essence of SAMoDOM.

 

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:

wind speed
m/s
kinetic wind power
KWatt
31.59
43.76
57.35
612.70
720.17
830.11
942.87
1058.80
1178.26
12101.61
13129.18
14161.35
15198.45
16240.84
17288.88
18342.92
19403.31
20470.40

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!

  >> More articles - the part Economical eco building and engineering  

 
 
     
>> How we use "free energy" from renewable sources
underground heat accumulator
building of the underground heat accumulator

 
 
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our opposite to nannospalax leucodon
(underground rodent)
       
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