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Anonymous users2024-01-23Look at the total power of all your household appliances together, 9 18 yuan per W, if there are household appliances with motors, such as air conditioners, refrigerators, washing machines, it is recommended that the total power increase is 1 3 or more.
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Anonymous users2024-01-22If the cost of solar energy input is 9-12 yuan watts connected to the grid, it is about 20 yuan off the grid.
Relative to the mains must be high, I don't recommend such a big one, if you really like to do a system with an average daily power generation of 2 kilowatt-hours, about 10,000 yuan.
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Anonymous users2024-01-21Personal home is not recommended, the cost is too high, not cost-effective, 15-20 years to recover the cost, the cost of generating electricity per day is 2000-2500 yuan.
The price of balcony wall-mounted solar energy is generally high, and the price of the brand is generally around 5000-8000 yuan. The collectors of wall-mounted solar energy do not go out of the tube (no pipe bursting, safe operation), and the operation mode of the water tank is under pressure, which is much higher than the cost of ordinary falling water solar energy. The selling price is also much higher.
The advantage of using copper coil is antifreeze, the copper coil is placed in the water tank and connected to the collector, and the antifreeze is installed inside, which is a double-circuit system.
First of all, in general, when we install solar energy, the collector surface is about 5 degrees west due south. You can compare it according to this ordinary standard, secondly, there is solar energy that can be installed on the balcony, but it is not a solar water heater that integrates a vacuum tube and a solar water tank.
Wall-mounted, whether you need electric heating depends on your local climate. Of course, it is good, but it also costs electricity, so it is recommended to connect a small electric water heater.
Here's how to add it:
1. Determine the minimum air temperature for the local area, and on the basis of the minimum temperature, float down 5 10 and choose antifreeze. If the local minimum temperature is -15, choose the freezing point of antifreeze, which cannot be higher than -20, so as not to cause the antifreeze to become viscous and affect the use of extreme weather. >>>More