Solar flat-plate collector adopting electric tracing bands for auxiliary heating

Abstract

The invention discloses a solar flat-plate collector adopting electric tracing bands for auxiliary heating. The solar flat-plate collector comprises a casing, wherein heat insulation layers are arranged in the casing, a light-transmitting cover plate is arranged on the casing, a cavity is formed between the light-transmitting cover plate and the heat insulation layers, a heat collecting plate is arranged in the cavity, a pipe bank is arranged on the heat collecting plate, the heat collecting plate comprises a front side and a back side, the front side of the heat collecting plate faces the light-transmitting cover plate, a coating absorbing solar energy is arranged on the surface of the font side of the heat collecting plate, and the electric tracing bands are arranged on the back side of the heat collecting plate. The electric tracing bands are arranged on the back side of the heat collecting plate and have the fast heating effect, and water in the pipe bank of the heat collecting plate can be rapidly heated through heat transmission; holes in a water storage tank or the pipe bank are not needed, so that the water leakage probability of the equipment is reduced, and meanwhile, the safety problem caused by electric leakage of the equipment is reduced; the heat collecting plate or the pipe bank is directly heated, the problem that water in the pipe bank is frozen and expands in cold weather to damage the pipe bank can be effectively solved, and the solar flat-plate collector adopting the electric tracing bands for auxiliary heating has the advantages of simplicity in operation, safety and reliability in use and long service life.

Description

technical field [0001] The invention relates to the technical field of solar energy utilization equipment, in particular to a solar panel heat collector for auxiliary heating by means of an electric heating cable. Background technique [0002] Solar energy is an inexhaustible clean and renewable resource. Its shortcoming is that, affected by factors such as weather, season, and day and night, it has serious instability and intermittency, which brings major difficulties to its utilization, and its intermittency makes the solar energy utilization device unable to use continuously. [0003] For solar water heaters, in order to make them available all-weather, auxiliary heating equipment must be added for auxiliary heating. There are many types of auxiliary heating, but the current mainstream auxiliary heating is electric heating. The way of electric heating is to install an electric heating tube in the water storage tank, and heat the heating tube by energizing it. This heatin...

AI Technical Summary

Problems solved by technology

Its shortcoming is that, affected by factors such as weather, seasons, and day and night, it has serious instability and intermittency, which brings major difficulties to its utilization, and its intermittency makes the solar energy utilization device unable to use continuously

The way of electric heating is to install an electric heating tube in the water storage tank, and heat the heating tube by energizing it. This heating method mainly has the following problems: ①The heating tube is always immersed in water, which will be severely corroded, and the use of the heating tube will be shortened. life, the heating tube needs to be replaced frequently, which increases the cost of use; ②The electric heating tube is installed in the water storage tank, and holes must be opened on the wall of the water storage tank, which increases the probability of water leakage in the water storage tank; ③The electric heating tube is heated in the water storage tank, and there are still The problem of slow heating and high energy consumption; ④ soak the electric heating tube directly in water and then energize the electric heating tube, which has the problem of unsafe use

[0004] In addition, whether it is a vacuum tube water heater or a flat-panel solar water heater, the auxiliary heating equipment is installed in the water storage tank. When heating, the water in the vacuum tube or exhaust pipe cannot be heated. In cold weather, the water in the water heater will freeze and swell. The problem of vacuum tubes or flat tubes greatly increases the cost of use and the difficulty of maintenance

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