Solar energy and gas heating hot water furnace complementary heating system

Abstract

The invention provides a solar energy and gas heating hot water furnace complementary heating system which comprises a solar heat collection system, a heat storage water tank system, a domestic hot water system and a heating hot water system. A double-coil-pipe heat storage water tank is adopted for the heat storage water tank system. A tank body is internally provided with a lower heat exchange coil pipe and an upper heat exchange coil pipe. A domestic hot water inlet pipe G5 of a gas heating hot water furnace is connected with a domestic hot water supply pipe G4. A domestic hot water outlet pipe G6 of the gas heating hot water furnace is connected with the domestic hot water supply pipe G4. A heating water supply pipe G14 is connected to a water distributor in the heating hot water system. A water collector is connected with the bottom of the upper heat exchange coil pipe through a heating water return pipe G15. A bypass pipe G8 is connected with a heating hot water pipe G11 and the heating water return pipe G15. According to the system, the solar energy and the gas heating hot water furnace are utilized to heat, the utilization rate of renewable energy sources can be increased, and heat supply for users can be guaranteed at the same time.

Description

technical field [0001] The invention relates to a heat supply process, in particular to a complementary heat supply system for solar and gas heating water heaters. Background technique [0002] The characteristics of solar energy are huge, inexhaustible and inexhaustible; easy to obtain and high conversion rate; but strong time and seasonality. The solar energy density is the highest in summer and the lowest in winter, so the solar system with the same area gets the least heat in winter. If it is used in the heating system, its heat collecting area will reach about a quarter of the heating area, and if the maintenance structure of the building does not meet the energy-saving requirements, the required area will be larger. The resulting initial investment is huge and beyond reasonable acceptance. Scholars at home and abroad have concluded that solar energy can provide 30% of the heating load in winter when conducting research on solar low-temperature hot water floor radiant...

AI Technical Summary

Problems solved by technology

[0008] In patent 200820103475.3 (solar auxiliary heating device for ground radiation heating), solar hot water is directly heated, which cannot guarantee water quality, causes corrosion to the heating end, reduces service life, and pipes are prone to freezing and cracking in winter; patent 200820201588.7 (heating and heating with solar energy Water dual-purpose gas heating water heater) direct heating of solar hot water, can not guarantee the water quality, cause corrosion to the heating end, reduce the service life, and the pipeline is prone to freezing and cracking in winter, domestic hot water and heating water are mixed, and the water quality cannot be guaranteed At the same time, solar hot water directly enters the gas heating water heater for heating, and it is easy to scale and block the pipeline, corroding the gas heating water heater; in the patent 200910062283 (solar floor heating system), the domestic hot water heating water is mixed, and the hot water cannot be solved The problem of priority use order; the heat storage tank in the patent 201010206216.5 (solar gas integrated heating device) uses multiple heat exchange coils, which affects the heat exchange efficiency, and the gas heating water heater has a low heating efficiency for the water tank and cannot guarantee heat supply Stability; in patent 201020129575.0 (solar and gas heating water heater combined with hot water supply and heating device), most of the heating only depends on gas heating water heater, and the utilization rate of solar energy for heating is low; patent 201020243754.7 and 201120232330.5 (solar, gas Heating water heater complementary heating system) The temperature of domestic hot water cannot meet the higher temperature needs of users. Solar hot water directly enters the gas heating water heater for heating, which is easy to scale and block the pipeline, corrode the gas heating water heater, and heat Ineffective use of solar energy; patent 201120281740.9 (solar wall-mounted boiler heating device) in which the domestic hot water temperature cannot meet the user's higher temperature requirements, and solar energy is not effectively used for heating; patent 201210330458.4 (a combined solar and gas household heating system) Mixed use of domestic hot water and heating water can not guarantee the water quality, and the heating water temperature is set too high, which is not conducive to energy saving; patents 201310514364.7 and 20132066628.0 (a combined heating system of solar energy and condensing gas heating water heater) do not take into account the amount of solar radiation Low temperature and high demand for domestic hot water lead to low temperature of the water tank and heating water outlet temperature, resulting in reverse heating of the water tank by the heating water. At the same time, the structure of the water storage tank is complicated, which is not conducive to maintenance

In patent 201320054166.2 (vacuum tube solar energy and gas combined heating system), the heat storage tank uses multiple heat exchange coils, which affects the heat exchange efficiency, and the gas heating water heater has a low heating efficiency for the water tank and cannot guarantee the stability of heat supply ; In the patent 201320062466.5 (a combination of light panel solar energy and gas heating system), the heat storage tank adopts multiple heat exchange coils, which affects the heat exchange efficiency, and the gas heating water heater has a low heating efficiency for the water tank and cannot guarantee the supply. Thermal stability; in 20140556891.4 (a solar wall-mounted boiler), the domestic hot water does not effectively use solar energy, and the solar hot water directly enters the gas heating water heater for heating, and it is easy to scale and block the pipeline to corrode the gas heating water heater, and the gas heating water heater is easy to occur in winter Frozen cracking phenomenon

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