Solar gas composite energy water heating system and use method

Abstract

The invention relates to the field of water storage heaters and discloses a solar gas composite energy water heating system. The system comprises a solar heater, a gas water heater, a water tank, a central hot water circulating circuit and a control system and is characterized in that the water tank comprises a constant temperature tank and a heat storage tank, wherein the constant temperature tank is directly connected with the central hot water circulating circuit, and the heat storage tank forms a solar circulating circuit with the solar heater. A first water outlet in the upper end of the constant temperature tank is connected with a water inlet of the gas water heater, and a first water inlet in the upper end of the constant temperature tank is connected with a water inlet of the gas water heater to form a heating and circulating circuit. A water outlet of the heat storage tank is connected with a second water inlet in the lower end of the constant temperature tank and a water inlet of the gas water heater. Compared with the prior art, the solar gas composite energy water heating system has the advantages that the solar utilization rate is high, the heating rate is high, and continuous large flow constant temperature water supplying capacity can be obtained through little heat output of a gas heating device. The invention further provides a control method based on the water heating system.

Description

technical field [0001] The invention relates to the field of water storage heaters, in particular to a solar gas composite energy hot water system and a using method. Background technique [0002] In recent years, as energy saving and environmental protection put forward higher and higher requirements for household appliances, solar gas water heaters are gradually favored by users. However, independent solar water heaters are greatly affected by the climate, and it is difficult to ensure sufficient hot water at all times. To this end, the industry has developed a multi-heat source hot water system that combines solar gas and gas. [0003] As a publication number is the Chinese patent disclosure of CN2740949 a kind of multi-heat source (solar energy, gas, electricity) central gas water heater, as figure 1 As shown, it includes: a solar heating device 01, a gas heating device 02, a constant temperature pump 03, a temperature sensor 04, and a temperature control system 05. Th...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a new type of solar gas combined energy hot water system, which solves the problem of low utilization rate of solar energy in the solar gas combined energy hot water system, and relieves the water flow limitation of the solar gas combined energy hot water system. Gas water heater heating capacity limit problem

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