再生可能 エネルギー
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- Joined
- Nov 28, 2019
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- 274
Thank for for your comment, but am living near the ocean, and some time, only few days a years, the wind is so strong that youI'm curious why you don't think you can tilt your panels. I live in Northern Baja and have my array mounted on a flat roof and tilted @31 degrees. We have strong winds on a regular basis (up to 70 mph) and have even had a degrading hurricane pass over. I have built a cedar dog eared fence type structure to break up any wind that may want to lift my array. It has remained rock solid throughout all wind events. I basically don't even think about it any more.
could not walk on top of a flat roof. San Francisco is windy because the ocean is cold and inland areas are hot. When there is any
obstacle, like a mountain, the air traveling from high pressure (cold air) to low pressure (hot air) can go very fast.
Offshore wind speeds over 90 mph belt Bay Area in rare winter event
The blustery conditions sparked a handful of brush fires.
www.sfgate.com
Your solar panel would not stand for too long in my area.
In my situation, I can only install two panels toward the south,
and when installed verticaly there is not too much difference in winter with a panel installed flat.
The optimum solution that I am considering is to have three sets of six panels each, oriented toward east, west, and flat.
Looking at the numbers previousl generated by @sunshine_eggo, inclining the east and west panels, would be
less efficient in winter, while providing more solar energy in summer than I need to provide ligthing inside a building.
1) 18 panels with 6 flats, 6 vertical east and west:
2) 18 panels with 6 flats, 6 east and 6 west with 85 degree inclination:
3) 18 panels with 6 flats, 6 east and 6 west with 45 degree inclination:
I am currently considering a battery of 16 cells of 280 Ah, or may be 310 Ah.
I plan to use only 80 % of the capacity of the battery, and I estimate that
I would have overall 20% of losses from conversions, so basically charging
the battery would require about 17.2 kWh of solar energy.
Since I will have some solar surplus, I made a quick study to try
using the extra energy to heat some water or to recharge an EV.
To heat the water I would need an extra water tank and
a 240 V inverter to power one 4.5 kW heating element.
In the case of charging an EV, I could still use a 120 V inverter,
however a 240 V inverter would be more efficient. For illustration pupose,
I estimate a 3 miles range per kWh to include the car AC/DC inverter losses.
In the case of the east and west panels installed verticaly, I will have 12 months of surplus, but
in the case of the east and west panels inclined 85 degrees, I will have only 9 months of surplus, and
in the case of the east and west panels inclined 45 degrees, I will have only 10 months of surplus.
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