Generally, in summer, the hot water temperature reaches 38 degrees, and it takes about 6 or 7 minutes to rise one degree. In winter, the hot water temperature reaches over 45 degrees, and it takes about 6-7 minutes. 10-12 minutes to go up one degree.
The electrical heat per kilowatt hour is 860 K and the conversion rate is 92%. If 200 liters of water goes from 20 degrees to 70 degrees and the temperature increases by 50 degrees, the required power consumption is 200. *50/(860*92%) = 12.6 degrees. Electricity, using a 1.5 kW electric heater requires time: 12.6/1.5 = 8.4 hours.
It takes an electric heating time of 2.5 kW: 12.6/2.5 = 5 hours. If 70 degree water is exposed indoors at 10 degrees, it will become cold in about 20 minutes if it is in a water tank. , the temperature of a good water tank will not drop more than 10 degrees 24 hours a day, and the bestTheir water tank will not drop more than 5 degrees.
Detailed information:
1. Even in harsh winter, if there is no water in the water tank, the water should not be filled immediately after air drying, because the temperature inside the tube will vacuum can reach around 2500°C. during air drying, there is no water in the water tank. Watering or underwatering should be done before sunrise or half an hour after sunset to avoid pipe bursting.
2. If an auxiliary heat source is installed, the auxiliary heat source device and heat exchanger should be checked regularly to see if they are functioning properly. For auxiliary heat sources heated by electric heating pipes, you must ensure that the protection device againstleaks works reliably before use, otherwise it cannot be used. When using the electric auxiliary heater, special attention should be paid to filling the water. The volume of water in the water tank should not be less than 50% to avoid dry burning without water.
3. When taking a bath, pay particular attention to unplugging the power plug, and it is strictly prohibited to use it when the power is on.
4. When installing heating tapes, be sure to choose products of acceptable quality to ensure normal use and reduce hidden dangers. When using the heating tape, be sure to turn it off promptly after defrosting, and try not to use it when the voltage is unstable.
Baidu Encyclopedia - Solar Energy
Baidu Encyclopedia - Heat Calculation Formula
1 Once the heaterto solar put into service, it must be used. be used regularly. It is recommended to use it daily as much as possible. It is best to use it 4-5 times with an interval of less than 4 hours. This is because if you use water for a long time, the water will be used for users on lower floors. we actually use low temperature water in the pipes (water from the solar water heater) (formed after staying in the pipes and cooling, especially in northern winter, the outside temperature is low, sometimes reaching below -25° C); the water in the water supply and drainage pipes cools very quickly. If it is a six-story building, users on the first floor have to empty the cold water from the basin one by one, which would be particularly wasteful. is frequently used.
2. It can effectively prevent freezing, so that there is always a heat sourcer in water pipes. With the insulating layer, it can effectively prevent freezing. In winter in the north, many people also use the method of slightly opening the water heater faucet indoors to let the water flow out.