1. Firstly, the collector tube of the solar water heater is irradiated by sunlight. The photons strike the coating and the solar energy is converted into thermal energy. The water absorbs heat from the exterior of the coating. Water temperature increases and density. decreases. Hot water rises and the specific gravity of cold water falls.
2. Second, the hot water is always located in the upper water tank, so the water tank is higher than the collector tube, which promotes water circulation.
3. Finally, it is a convection problem. After water absorbs heat, its temperature increases, its density decreases, and water at low temperatures has a relatively low density and moves downward. This is conducive to heat collection and improves the efficiency of solar energy use.
If your home is equipped with solar and electric water heaters, turn onthe water heater drain switch and water will come out of the solar drain pipe. In this case, just turn it off. the switch on the solar hot water pipe. For hot water from the water heater (the switch on the hot water pipe of the water heater is turned on), you can use solar hot water (the switch on the hot water pipe of the water heater -water). is on) by turning off the hot water pipe switch of the water heater (the solar hot water pipe switch is on. In short, just turn one on and turn off the other).
There are two ways to mix electric water heaters and solar energy: series connection and parallel connection. Series connection is to connect the solar hot water pipe to the water inlet of the electric water heater, and then connect the hot water from the electric water heater for use. Parallel connection is to use a tee, one port is connected to solar energyre, one port is connected to the electric water heater and the other port is connected to the faucet. Connect a check valve and angle valve to the solar power port, and connect a corner valve to the electric water heater port.
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Advantages and disadvantages of solar energy and electric water heaters
In addition to being economical energy efficient and low energy consumption. Carbon and eco-friendly, solar water heaters are mainly the best is the water storage function, if you have a large family. There is absolutely no way to meet the demand using electric water heaters because the water storage capacity of electric water heaters is much less than that of solar water heaters. Electric water heaters are generally used in small families of around 3 to 4 people. there are more people, you have to wait a moment to getr hot water.
Even if the solar water heater works on cloudy days, you don't have to worry about not having enough hot water for bathing. Because when the sun is sufficient, a lot of hot water has been stored in the water heater, and the water in it will be effective on cloudy days. Generally, solar water heaters need to be exposed to enough sunlight to maintain the hot water temperature for a long time.