Can solar energy supply water at noon in summer?

Solar water heater, it doesn't matter if you supply water at noon;

In normal use, there will always be a tube full of water in the vacuum tube of solar water heater, not to mention that in general, at least 20% of water is stored in the insulation water tank of solar water heater.

In the normal use of solar water heaters, as long as there is a small amount of water in the insulation tank, you can safely supply water to solar energy at noon on a sunny day. In order to be safer, you can slow down the water supply speed in the first few minutes, and then open the water pipe after the hot water and cold water in solar energy are fully mixed.

Extended data Solar water heaters convert solar energy into heat energy and heat water from low temperature to high temperature, so as to meet people's hot water use in life and production.

Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structural forms, with vacuum tube solar water heaters as the main one, accounting for 95% of the domestic market share.

Vacuum tube household solar water heater is composed of collector tube, water storage tank, bracket and other related accessories. The conversion of solar energy into heat energy mainly depends on the collector tube. The collector tube uses the principle of hot water floating and cold water sinking to make the water produce microcirculation and reach the required hot water.

endothermic process

When the vacuum tube water heater absorbs heat, the solar radiation passes through the outer tube of the vacuum tube, is absorbed by the heat collecting coating, and then is transmitted to the water in the tube along the inner tube wall. After absorbing heat, the temperature of water in the pipe rises, and the specific gravity decreases and rises, forming upward power and forming a thermosyphon system.

As the hot water moves upward, it is stored in the upper part of the water storage tank, and the water with lower temperature is continuously replenished along the other side of the pipeline, and finally the whole tank of water rises to a certain temperature.

Flat-panel water heaters are generally split-type water heaters. The medium naturally circulates in the heat collecting plate due to thermosiphon, and the heat radiated by the sun on the heat collecting plate is transferred to the water tank in time, and the heat in the water tank is transferred to cold water through heat exchange. The medium can also realize heat transfer through pump circulation.

reference data

Working principle of solar water heater _ Baidu Encyclopedia