As you can see, on average a pipe carries about 10 kg of hot water
A vacuum tube is 58-1 m8, with a heat collection area of about 0.085㎡ . Class II areas are 5,850 to 6,680 MJ/m2, and the daily irradiation amount is 16.027 to 18.301 MJ/m2. Taking here 17 MJ/m2, the heat absorption of each tube is 1.445 MJ.
Suppose that the water temperature is reached. the rise is △T
Then 1445000=
10×4200×△T
That is to say: △T=1445000/(10×4200 )=34.405℃
< p>That is, a generally configured vacuum tube usually heats up to 34.405°C in one day, the initial water temperature is generally 15° C and the bath temperature is generally 38°Cp>As long as the temperature increase reaches 38-15=23°C
The average temperature increase of solar energy per hour is: 34÷8=4.5℃
Then 23÷4.5=5 hours, that is, there will be water eachude for bathing in about 5 hours
Solar Power How long does it take for the water heater to heat up?
When there is enough sunlight, it usually takes two to three hours for the water to be warm.
Does solar water heater heating require sunlight? If it is ordinary solar energy, it certainly needs sunlight, but some solar energy can be used for heating. Electric water heaters don't need sunlight in theory. However, current solar energy is electrically assisted heating only. If there is no sun. It is heated by electricity. Same as electric water heater. This does not necessarily cost much in electricity, but the temperature is high.
Should a solar water heater be installed on the roof of the building? It depends on the ground level. Generally, small buildingsThe high-rise ones can be installed on the roof, but they can also be installed on the balcony wall. The vacuum tube solar water heater (vacuum tube all-in-one machine) does not need to be installed on the roof.
To what outdoor temperature can solar water be heated?
It depends on the water temperature in the water tank. If it is cold water, it will take more. more than 3 hours to heat water with electricity. When the temperature reaches 75 degrees, the water heater automatically stops heating. When the heating light goes out, you can take a shower.
If you take a bath in summer, you can take a bath after turning on the power for about 20 minutes. The suitable temperature for human body bathing is generally around 42 degrees, but in winter it is better. have a higher temperature. A 50 liter water tank is generally sufficient for oneperson to take a bath after the water heater automatically stops heating.
Detailed information:< /strong>
The vast majority of solar water heater instructions include a “not for consumption” warning.
Because even though the water entering the water heater is clean tap water, it is used to make the materials of water heaters and their supporting components (such as metal pipes , etc.) can often contain harmful poisons such as lead, cadmium, manganese and arsenic. In addition, the temperature of the water heated by solar water heaters is generally between 40°C and 70°C, which is conducive to the reproduction of bacteria and viruses.
In addition, whether it is a solar water heater or an electric water heater, there is a water storage tank. Unused water can be stored in the tanksee over time, causing previously heated water to be released. pollute.
The outside temperature is about four to five degrees above zero, and with eight hours of normal sunshine, the temperature rise can reach more than 40 degrees, that is, if the water is cold. is 10 degrees, it can produce more than 50 degrees of heat at the end of the day; but solar water heater installation has orientation requirements of 15 degrees from south to west. the longest lighting duration. If the orientation is disabled, the effect of hot water will be directly affected.