CN103512081B - A kind of solar energy and condensing gas wall hanging stove combined heating system - Google Patents

Abstract

The invention discloses a combined heating system of solar energy and condensing gas wall-hung boiler, which comprises: (1) a solar heat collector, which is placed on the roof facing the sun; (2) a heat storage tank; 3) Condensing gas wall-hung boiler; (4) Heating coil; (5) Climate compensator. Advantages of the present invention: (1) The present invention uses solar energy as the main heat source for heating and gas as auxiliary energy, which can effectively reduce the consumption of fossil energy, reduce the discharge of environmental pollutants, and optimize energy utilization efficiency. (2) The present invention can overcome the shortcomings of using solar energy or gas as a single heat source for heating, making the heating system more reliable and stable, and also expanding the scope of use of the system; (3) The present invention uses solar energy as a heating heat source, which can reduce the consumption of gas Consumption, thereby reducing the user's heating costs and playing an economical role.

Description

A combined heating system of solar energy and condensing gas wall-hung boiler

technical field

The invention relates to a heating system, in particular to a combined heating system of solar energy and condensing gas wall-hung boiler.

Background technique

With the rapid development of my country's economy and the increasingly serious problems of energy shortage and environmental pollution, energy conservation, emission reduction and low-carbon life have become the development trend of all walks of life. China is rich in solar energy resources. The total annual solar radiation of more than two-thirds of the country's land area exceeds 5.0GJ/m ² , and the annual average sunshine hours exceed 2,200 hours. Especially in the vast North China and Northwest China, there is sufficient sunshine, which provides good natural conditions for the development and utilization of solar energy. Natural gas is a clean fossil fuel that has become the fastest growing energy source in the world. With the rapid development of China's economy and the continuous improvement of people's quality of life, the demand for natural gas has also increased rapidly. my country's West-to-East Gas Pipeline Project, the construction of Guangdong LNG import project, the introduction of natural gas from Russia and Central Asian countries, and the further development of marine natural gas projects have marked new trends in China's energy development. These favorable factors have created good conditions for the development and utilization of gas appliances.

Although solar energy has been rapidly developed and popularized in my country, it is still mainly limited to the scope of providing domestic hot water. Because it is restricted by natural conditions such as weather and day and night, the heating capacity is unstable, and most of them use electricity and gas as auxiliary energy sources; For areas that have not been covered by municipal heat, or users who have special requirements for heating time, condensing gas wall-hung boilers are favored as a heating source because of their high degree of automation, flexible and convenient control, high energy efficiency, and environmental friendliness. Gas costs and heating costs are high, and large-scale application is limited.

Simply using solar energy or condensing gas wall-hung boilers for domestic hot water heating and heating has its own limitations. Patent 200720019424.8, solar hot water is directly used for heating, which is prone to pollution. In winter, pipes are prone to freezing and cracking. Patent 200820103475.3. Patent 200820201588.7 domestic hot water and heating hot water are not separated, and solar hot water directly enters heating and domestic hot water, which is prone to pollution, and solar preheated hot water enters gas wall-hung boilers, which is prone to scaling and blockage; patent 200910062283.1 domestic hot water and The heating and hot water are not separated. When heating and hot water are needed at the same time, conflicts arise, and when the water is insufficient, water needs to be replenished, which affects the stability of heating. In addition, the temperature of domestic hot water is set too high, and the heating water supply is set at 40°C, which does not make full use of solar energy. This patent uses a water mixing device, which occupies a certain amount of indoor space; the heat storage tank in patent 201020129575.0 uses multiple heat exchangers, which reduces the heat exchange efficiency and does not make full use of solar energy; patent 201020243754.7 may have up to The use temperature of domestic hot water is lower than the use temperature of domestic hot water, and it will absorb part of the heat of heating water, which is not conducive to stable heating; patent 201120232330. Utilize solar energy; patent 201210330458.4 Domestic hot water and heating hot water are not used separately, and the heating temperature is set too high to make full use of solar energy.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a method that maximizes the use of renewable energy, reduces the consumption of traditional energy and pollutant emissions, and reduces the cost of heating and domestic hot water supply, realizing energy saving, It is a combined heating system of solar energy and condensing gas wall-hung boiler that realizes the optimal combination of multiple energy sources, reducing emissions and economic benefits.

A combined heating system of solar energy and condensing gas wall-hung boiler of the present invention comprises:

(1) Solar heat collector. The solar heat collector is placed on the roof facing the sun. The lower port of the solar heat collector is connected with a vent pipe equipped with a fourth solenoid valve. The end is provided with a first temperature sensor, and the water outlet end of the solar collector is connected with the solar water outlet pipe provided with the fifth solenoid valve;

(2) heat storage tank, an insulation layer is arranged outside the heat storage tank, an internal coil is installed in the heat storage tank, and an exhaust valve and a water level gauge are installed on the heat storage tank , the heat storage tank is provided with an inner coil water inlet, an inner coil water outlet, a domestic hot water inlet and a domestic hot water outlet, a heating water return port and a heating water supply port, and the inside of the heat storage tank is divided into Two independent spaces, one space is used for heating water storage, and the other space is used for domestic hot water storage, and a domestic hot water level sensor is installed on the inner wall of the domestic hot water storage space; the inner coil water inlet It is connected to the solar water outlet pipe, and the inner coil outlet is connected to the water inlet of the solar water inlet pipe. The expansion tank, the solar circulation pump and the third solenoid valve are connected in sequence. The tap water pipeline is divided into two branches. One branch with the first cut-off valve is connected to the domestic hot water mixing pipe. A branch circuit is divided into a domestic hot water inlet pipe provided with a first solenoid valve and a first check valve, a heating and supplementary water pipe provided with a second solenoid valve and a second check valve, and a domestic hot water inlet pipe connected to a storage tank. The domestic hot water inlet on the heat tank is connected, the heating replenishment pipe is connected with the heating return port on the heat storage tank, the heating replenishment pipe located between the second solenoid valve and the second check valve is connected to the outlet of the heating return mixing pipe connected; the domestic hot water supply pipe is connected to the domestic hot water outlet, a domestic hot water supply temperature sensor is installed on the domestic hot water supply pipe at the domestic hot water outlet, and a second electric motor is installed on the domestic hot water supply pipe. Three-way valve;

(3) Condensing gas-fired wall-hung boiler, the condensing-type gas-fired wall-hung boiler includes a wall-hung boiler heating return pipe equipped with a pump, a wall-hung boiler heating water supply pipe provided with a third check valve, a wall-hung boiler domestic hot water supply pipe, and a wall-hung boiler. One end of the second electric three-way valve is connected to the inlet of the domestic hot water supply pipe of the wall-hung boiler, and the outlet of the domestic hot water outlet pipe of the wall-hung boiler is connected to the domestic hot water supply pipe and connected to the domestic hot water mixing pipe;

(4) The inlet of the heating water supply pipe is connected to the heating water supply port, the outlet of the heating water supply pipe is connected to the inlet of the floor heating coil installed with the heating circulation pump, and the heating water supply pipe from the inlet to the outlet is sequentially installed with the first An electric three-way valve, a temperature sensor at the mixing place of heating water supply, a third electric three-way valve and a floor heating water supply temperature sensor, the remaining end of the first electric three-way valve is connected to the heating return pipe of the wall-hung boiler, and the outlet of the heating water supply pipe of the wall-hung boiler The water outlet is connected to the heating water supply pipe, the remaining end of the third electric three-way valve is connected to one end of the heating bypass pipe installed with the sixth solenoid valve, and the other end of the heating bypass pipe is connected to the heating return water mixing pipe. The water outlet of the pipe is equipped with a floor heating heating return water temperature sensor, and the water outlet of the floor heating coil is connected with the inlet of the heating return water mixing pipe;

(5) Climate compensator, the climate compensator communicates with the outdoor temperature sensor, indoor temperature sensor, heating water mixing place temperature sensor, floor heating heating water supply temperature sensor, floor heating heating return water temperature sensor, the third electric three-way valve, The heating circulation pump is connected with the sixth solenoid valve, the climate compensator is connected with the centralized controller for signal exchange and feedback, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the One electric three-way valve, the second electric three-way valve, solar circulation pump, water level gauge, domestic hot water level sensor, solar outlet water temperature sensor, solar inlet water temperature sensor, heating water supply temperature sensor, domestic hot water supply temperature sensor, And the control system of the condensing gas wall-hung boiler is connected with the centralized controller through the signal transmission line for centralized control and adjustment.

Advantages of the present invention:

(1) The present invention uses solar energy as the main heat source for heating and gas as an auxiliary energy source, which can effectively reduce the consumption of fossil energy, reduce the discharge of environmental pollutants, and optimize energy utilization efficiency;

(2) The present invention can overcome the shortcomings of using solar energy or gas as a single heat source for heating, making the heating system more reliable and stable, and also expanding the scope of use of the system;

(3) The present invention uses solar energy as a heating heat source, which can reduce the consumption of gas, thereby reducing the heating cost of users and playing the role of economical savings;

(4) The system adopts automatic control technology, which can reduce labor costs and improve the stability of system operation;

(5) In the non-heating season, solar energy can be used to provide domestic water, which is both environmentally friendly and economical.

(6) The system adopts a climate compensator, which can automatically adjust the temperature of heating supply and return water according to the change of outdoor ambient temperature, maintain an appropriate indoor temperature, and improve heating comfort.

Description of drawings

The accompanying drawing is a structural schematic diagram of a solar energy and condensing gas wall-hung boiler combined heating system of the present invention.

In the figure: 1-solar circulation pump 2-expansion tank 3-solar collector 4-condensing gas wall-hung boiler 5-heat storage tank 6-heating circulation pump 7-climate compensator 8-centralized controller 9-floor heating coil 10-insulation layer 11-internal coil 12-exhaust valve 13-internal coil inlet 14-internal coil outlet 15-domestic hot water inlet 16-domestic hot water outlet 17-heating return port 18-heating Water supply port 19-Water level gauge 20-Signal transmission line 21-Hot water level sensor D1-D6: Solenoid valve Z1-Z3: Check valve F1-F3: Solenoid three-way valve J1-J2: Stop valve T1-Solar water outlet temperature Sensors T2-solar water inlet temperature sensor T3-heating water supply temperature sensor T4-domestic hot water supply temperature sensor T5-heating water supply mixing place temperature sensor T6-floor heating heating water supply temperature sensor T7-floor heating heating return water temperature sensor T8-outdoor temperature sensor T9-indoor temperature sensor G1-solar water inlet pipe G2-solar water outlet pipe G3-tap water pipe G4-domestic hot water supply pipe G5-heating water supply pipe G6-wall-hung boiler heating return pipe G7-wall-hung boiler heating water supply pipe G8-wall-hung boiler life Hot water supply pipe G9-wall-hung boiler domestic hot water outlet pipe G10-heating bypass pipe G11-domestic hot water mixing pipe G12-heating return water mixing pipe G13-venting pipe

detailed description

As shown in the accompanying drawings, a combined heating system of solar energy and condensing gas wall-hung boiler of the present invention comprises:

(1) solar heat collector, the solar heat collector is placed on the position facing the sun on the roof, and the lower port of the solar heat collector 3 is connected with the vent pipe G13 that the fourth electromagnetic valve D4 is housed. The water outlet end of the device 3 is provided with a first temperature sensor T1, and the water outlet end of the solar collector 3 is connected to the solar water outlet pipe G2 provided with the fifth electromagnetic valve D5;

(2) heat storage tank 5, an insulation layer 10 is arranged outside the heat storage tank 5, an internal coil pipe 11 is installed in the heat storage tank 5, and a drain is installed on the heat storage tank 5. Air valve 12 and water level gauge 19, internal coil water inlet 13, internal coil water outlet 14, domestic hot water inlet 15, domestic hot water outlet 16, heating return water inlet 17 and heating The water supply port 18, the interior of the heat storage tank 5 is divided into two independent spaces, one space is used for heating water storage, and the other space is used for domestic hot water storage, on the inner wall of the domestic hot water storage space There is a domestic hot water level sensor 21; the inner coil water inlet 13 is connected to the solar water outlet pipe G2, the inner coil water outlet 14 is connected to the solar water inlet pipe G1 water inlet, and the solar water inlet pipe G1 outlet is connected to the solar water inlet pipe G1 The water inlet end of the heat collector 3 is connected, and the pipeline from the water inlet of the solar water inlet pipe G1 to the water outlet is connected with the expansion tank 2, the solar circulation pump 1 and the third solenoid valve D3 in sequence, and the tap water pipe G3 is divided into two branches , one branch installed with the first shut-off valve J1 is connected to the domestic hot water mixing pipe G11, and the other branch installed with the second shut-off valve J2 is divided into a branch equipped with the first solenoid valve D1 and the first check valve Z1. The domestic hot water inlet pipe and the heating and replenishing water pipe provided with the second electromagnetic valve D2 and the second check valve Z2, the domestic hot water inlet pipe is connected with the domestic hot water inlet 15 on the heat storage tank 5, the heating and replenishing water pipe It is connected with the heating return water port on the heat storage tank, and the heating water supply pipe located between the second solenoid valve D2 and the second check valve Z2 is connected with the outlet of the heating return water mixing pipe G12; the domestic hot water supply pipe G4 is connected with the domestic heat The water outlet 16 is connected, the domestic hot water supply pipe at the domestic hot water outlet 16 is provided with a domestic hot water supply temperature sensor T4, and the domestic hot water supply pipe G4 is provided with a second electric three-way valve F2;

(3) Condensing gas wall-hung boiler 4, said condensing gas wall-hung boiler 4 includes a wall-hung boiler heating return pipe G6 equipped with a pump, a wall-hung boiler heating water supply pipe G7 provided with a third check valve Z3, and a wall-hung boiler living heat pipe. Water supply pipe G8, domestic hot water outlet pipe G9 of the wall-hung boiler, one end of the second electric three-way valve F2 is connected with the inlet of the domestic hot water supply pipe G8 of the wall-hung boiler, and the outlet of the domestic hot water outlet pipe G9 of the wall-hung boiler is connected with the domestic hot water supply pipe G4 is connected and connected with the domestic hot water mixing pipe G11; the condensing gas wall-hung boiler 4 is available in the market, and its internal structure is: the wall-hung boiler heating return pipe G6 of the condensing gas wall-hung boiler 4 passes through the flue gas inside the condensing gas wall-hung boiler The heat exchanger is connected to the heating water supply pipe G7 of the wall-hung boiler, and the domestic hot water supply pipe G8 of the wall-hung boiler is connected to the domestic hot water outlet pipe G9 of the wall-hung boiler through the heating and hot water heat exchanger of the condensing gas wall-hung boiler.

(4) The inlet of the heating water supply pipe G5 is connected with the heating water supply port 18, the outlet of the heating water supply pipe G5 is connected with the inlet of the floor heating coil 9 equipped with the heating circulation pump 6, and the heating water supply pipe from the inlet to the outlet The first electric three-way valve F1, the temperature sensor T5 at the mixing place of heating water supply, the third electric three-way valve F3 and the temperature sensor T6 of floor heating heating water supply are installed on G5 in sequence, and the remaining end of the first electric three-way valve F1 is connected with the wall-hung boiler for heating The return pipe G6 is connected, the water outlet of the heating water supply pipe G7 of the wall-hung boiler is connected with the heating water supply pipe G5, and the remaining end of the third electric three-way valve F3 is connected with the end of the heating bypass pipe G10 installed with the sixth solenoid valve D6. The other end of the bypass pipe G10 is connected to the heating return water mixing pipe G12, and the floor heating return water temperature sensor T7 is installed at the water outlet of the floor heating coil 9, and the water outlet of the floor heating coil 9 is connected to the inlet of the heating return water mixing pipe G12 ;

(5) Climate compensator 7, the climate compensator 7 communicates with the outdoor temperature sensor T8, the indoor temperature sensor T9, the temperature sensor T5 at the mixing place of heating and water supply, the temperature sensor T6 of the floor heating and heating water supply, and the temperature sensor T7 of the floor heating and heating return water through the signal transmission line 20 , the third electric three-way valve F3, the heating circulation pump 6 and the sixth solenoid valve D6 are connected, the climate compensator 7 is connected with the centralized controller 8 for signal exchange and feedback, the first solenoid valve D1, the second solenoid valve D2, the sixth solenoid valve Three solenoid valves D3, fourth solenoid valve D4, fifth solenoid valve D5, first electric three-way valve F1, second electric three-way valve F2, solar circulation pump 1, water level gauge 19, domestic hot water level sensor 21, The solar water outlet temperature sensor T1, the solar water inlet temperature sensor T2, the heating water supply temperature sensor T3, the domestic hot water supply temperature sensor T4, and the control system of the condensing gas wall-hung boiler 4 are all connected to the centralized controller 8 through the signal transmission line 20 to carry out Centralized control and regulation.

The working process of the device of the present invention is as follows:

1. During the initial operation, first close the fourth solenoid valve D4, open the third solenoid valve D3, the fifth solenoid valve D5, and the solar circulation pump 1 to flush the working medium of the solar collector system into the pipeline and the expansion tank. After the expansion tank reaches a certain pressure, turn off the solar circulation pump 1. Open the first shut-off valve J1, the second shut-off valve J2, the first solenoid valve D1, the second solenoid valve D2, and the exhaust valve 12, and close the first, second and third solenoid three-way valves F1, F2, F3, so that Tap water enters the heat storage tank 5, until the water level in the heat storage tank 5 reaches the set position, the water level gauge will feed back the action signal to the centralized controller 8, and the centralized controller 8 will transmit the signal to close the first and second Two solenoid valves D1, D2, exhaust valve 12. Open the three-way solenoid valve F1 leading to the valve of the condensing gas wall-hung boiler 4, close the valve connected to the domestic hot water mixing pipe G11, open the three-way solenoid valve F3 leading to the valve of the heating bypass pipe G10, and close the heating circulation pump 6, open the solenoid valve D6, and at the same time ensure that the water pressure of the heating system of the condensing gas wall-hung boiler 4 reaches the working pressure, and after running the condensing gas wall-hung boiler 4 for a period of time, close the gas valve on the condensing gas wall-hung boiler 4. Then enter the normal operation phase.

2. Implementation of normal operation. In the heating season, set the daytime from 6:00 to 18:00, and the corresponding temperature will be sensed by the solar outlet water temperature sensor T1 and the solar inlet water temperature sensor T2. If the temperature of the solar outlet water temperature sensor T1 is higher than that of the solar inlet water temperature sensor T2 When the temperature does not exceed 4°C (T1 high temperature water, T2 low temperature water, the solar system will only operate when T1>=T2+4°C), the solar circulation pump 1 and the third and fifth solenoid valves D3 and D5 are closed, and the solar energy When the system stops running, if the temperature of the solar outlet water temperature sensor T1 is higher than the temperature of the solar inlet water temperature sensor at T2 and equals or exceeds 4°C, the solar circulation pump 1 and the third and fifth solenoid valves D3 and D5 are opened, and the solar system operates .

The outdoor temperature is sensed by the outdoor temperature sensor T8 of the climate compensator 7, and the indoor temperature is sensed by the indoor temperature sensor T9, which is set at 22:00 to 6:00 in the evening to keep the indoor temperature at 20°C and maintain floor heating and water supply The temperature difference between the temperature sensor T6 and the floor heating return water temperature sensor T7 is maintained at 10°C, and the heating water supply temperature is sensed by the heating water supply temperature sensor T3. If the temperature of the heating supply water temperature sensor T3 is between 35 and 50°C, the climate compensator The temperature of the water supply temperature sensor T3 is used to calculate the optimal heating water supply flow rate. At this time, the valve of the first three-way solenoid valve F1 leading to the gas wall-hung boiler is completely closed, and the valve of the third three-way solenoid valve F3 connected to the bypass pipe G10 is completely closed , the heating hot water in the thermal storage tank 5 enters the floor heating coil under the action of the heating circulation pump 6 for heating, and the heating circulation pump 6 operates according to the optimal heating water supply flow rate under the action of the controller; if the temperature of T3 is lower than At 35°C, the condensing wall-hung gas boiler 4 in the standby state enters the operating state, the heating water temperature of the gas wall-hung boiler is set at 60°C, the temperature at the temperature sensor T5 at the mixing place of heating and water supply is maintained at 45±2°C, and the climate compensation The controller calculates the optimum heating water supply flow rate of the heating circulation pump based on this temperature. At this time, the valve of the third three-way solenoid valve F3 connected to the bypass pipe G10 is completely closed, the sixth solenoid valve D6 is closed, and the three valves of the three-way solenoid valve F1 are closed. Both are open, and under the optimum heating water supply flow, adjust the opening of each valve to ensure that the temperature of the mixed water at T5 is maintained at 45±2°C, and the heating circulation pump 6 operates according to the optimum heating water supply under the action of the controller. Traffic runs.

From 20:00 to 22:00 in the evening, the indoor temperature is sensed by the indoor temperature sensor T9. If the indoor temperature is higher than 20°C, the heating system will stop running until the indoor temperature is lower than or equal to 20°C. ~6:00 period control mode operation.

During the period from 6:00 to 20:00 during the day, keep the indoor temperature not lower than 20°C and not higher than 26°C. The room temperature during this period can be set by the user. If not set, the default indoor temperature is 20°C. The outdoor temperature sensor T8 of the climate compensator 7 senses the outdoor temperature, and the indoor temperature sensor T9 senses the indoor temperature, and keeps the temperature difference between the floor heating water supply temperature sensor T6 and the floor heating return water temperature sensor T7 at 10°C, and the heating water supply The temperature sensor T3 senses the temperature of the heating water supply and feeds it back to the climate compensator 7. The climate compensator calculates the flow rate of the heating water supply. If the temperature of the heating water supply temperature sensor T3 is lower than 50°C, it will be controlled according to the time period from 22:00 to 6:00 in the evening Mode operation; if the temperature of the heating water supply temperature sensor T3 is 50-60°C, the climate compensator calculates the flow rate of the circulating water pump based on the water supply temperature of 50°C, and at this time the first three-way solenoid valve F1 leads to the gas wall-hung boiler The valve is completely closed , the three valves of the third and three-way electromagnetic valve F3 are opened, and the sixth electromagnetic valve D6 is opened, and the heating hot water in the heat storage tank 5 runs into the floor heating plate under the action of the heating circulation pump 6 according to the calculated heating water supply flow. The heating pipe is used for heating, and the actual inlet water temperature is sensed by the floor heating water supply temperature sensor T6, and the opening of each valve of the third three-way solenoid valve F3 is adjusted. 00 ~ 6:00 period of control mode operation.

Three, non-heating season operation. If entering the non-heating season, after the floor heating coil is full of water, close the second and sixth electromagnetic valves D2, D6, the third electromagnetic three-way valve F3, the heating circulation pump 6, and the climate compensator 7.

Fourth, the normal operation of domestic hot water. The domestic hot water supply temperature sensor T4 senses the domestic hot water temperature in the heat storage tank 5, if the temperature of the domestic hot water supply temperature sensor T4 meets the domestic hot water supply requirements, the domestic hot water in the heat storage tank 5 passes through the electric tee The valve F2 enters the bathing and hot water pipelines for users to use. If the temperature of the domestic hot water supply temperature sensor T4 does not meet the domestic hot water supply requirements, if the condensing gas wall-hung boiler 4 is running in the heating mode at this time, Then the condensing gas wall-hung boiler 4 is automatically adjusted to operate in the domestic hot water mode, and the domestic hot water in the heat storage tank 5 passes through the second electric three-way valve F2, and part of it enters the condensing gas boiler through the domestic hot water supply pipe G8 of the wall-hung boiler. The wall-hung boiler 4 is heated, and part of it is mixed with the domestic hot water from the wall-hung boiler domestic hot water outlet pipe G9 in the condensing gas-fired wall-hung boiler 4, and the mixed domestic hot water enters the bathing and hot water pipes for use by users; If the condensing gas wall-hung boiler 4 is in the standby state, the condensing gas wall-hung boiler 4 enters the domestic hot water mode to run (open the second electromagnetic three-way valve F2, open the first and third electromagnetic three-way valves F1, F3 close) to produce hot water for the user; if the user stops using the domestic hot water, the condensing gas wall-hung boiler 4 enters the heating mode or the standby state. The domestic hot water in the heat storage tank is equipped with a water level gauge, which is linked with the first solenoid valve D1 of the tap water inlet pipe: if the water level gauge receives a signal to add water, the first solenoid valve will automatically open and fill in tap water. If the water level sensor When the signal of water cut-off is obtained, the first solenoid valve is automatically closed.

Claims (1)

1. A combined heating system of solar energy and condensing gas wall-hung boiler, characterized in that it includes: (1) Solar heat collector. The solar heat collector is placed on the roof facing the sun. The lower port of the solar heat collector is connected with a vent pipe equipped with a fourth solenoid valve. The end is provided with a first temperature sensor, and the water outlet end of the solar collector is connected with the solar water outlet pipe provided with the fifth solenoid valve; (2) heat storage tank, an insulation layer is arranged outside the heat storage tank, an internal coil is installed in the heat storage tank, and an exhaust valve and a water level gauge are installed on the heat storage tank , the heat storage tank is provided with an inner coil water inlet, an inner coil water outlet, a domestic hot water inlet and a domestic hot water outlet, a heating water return port and a heating water supply port, and the inside of the heat storage tank is divided into Two independent spaces, one space is used for heating water storage, and the other space is used for domestic hot water storage, and a domestic hot water level sensor is installed on the inner wall of the domestic hot water storage space; the inner coil water inlet It is connected to the solar water outlet pipe, and the inner coil outlet is connected to the water inlet of the solar water inlet pipe. The expansion tank, the solar circulation pump and the third solenoid valve are connected in sequence. The tap water pipeline is divided into two branches. One branch with the first cut-off valve is connected to the domestic hot water mixing pipe. A branch circuit is divided into a domestic hot water inlet pipe provided with a first solenoid valve and a first check valve, a heating and supplementary water pipe provided with a second solenoid valve and a second check valve, and a domestic hot water inlet pipe connected to a storage tank. The domestic hot water inlet on the heat tank is connected, the heating replenishment pipe is connected with the heating return port on the heat storage tank, the heating replenishment pipe located between the second solenoid valve and the second check valve is connected to the outlet of the heating return mixing pipe connected; the domestic hot water supply pipe is connected to the domestic hot water outlet, a domestic hot water supply temperature sensor is installed on the domestic hot water supply pipe at the domestic hot water outlet, and a second electric motor is installed on the domestic hot water supply pipe. Three-way valve; (3) Condensing gas-fired wall-hung boiler, the condensing-type gas-fired wall-hung boiler includes a wall-hung boiler heating return pipe equipped with a pump, a wall-hung boiler heating water supply pipe provided with a third check valve, a wall-hung boiler domestic hot water supply pipe, and a wall-hung boiler. One end of the second electric three-way valve is connected to the inlet of the domestic hot water supply pipe of the wall-hung boiler, and the outlet of the domestic hot water outlet pipe of the wall-hung boiler is connected to the domestic hot water supply pipe and connected to the domestic hot water mixing pipe; (4) The inlet of the heating water supply pipe is connected to the heating water supply port, the outlet of the heating water supply pipe is connected to the inlet of the floor heating coil installed with the heating circulation pump, and the heating water supply pipe from the inlet to the outlet is sequentially installed with the first An electric three-way valve, a temperature sensor at the mixing place of heating water supply, a third electric three-way valve and a floor heating water supply temperature sensor, the remaining end of the first electric three-way valve is connected to the heating return pipe of the wall-hung boiler, and the outlet of the heating water supply pipe of the wall-hung boiler The water outlet is connected to the heating water supply pipe, the remaining end of the third electric three-way valve is connected to one end of the heating bypass pipe installed with the sixth solenoid valve, and the other end of the heating bypass pipe is connected to the heating return water mixing pipe. The water outlet of the pipe is equipped with a floor heating heating return water temperature sensor, and the water outlet of the floor heating coil is connected with the inlet of the heating return water mixing pipe; (5) Climate compensator, the climate compensator communicates with the outdoor temperature sensor, indoor temperature sensor, heating water mixing place temperature sensor, floor heating heating water supply temperature sensor, floor heating heating return water temperature sensor, the third electric three-way valve, The heating circulation pump is connected with the sixth solenoid valve, the climate compensator is connected with the centralized controller for signal exchange and feedback, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the One electric three-way valve, the second electric three-way valve, solar circulation pump, water level gauge, domestic hot water level sensor, solar outlet water temperature sensor, solar inlet water temperature sensor, heating water supply temperature sensor, domestic hot water supply temperature sensor, And the control system of the condensing gas wall-hung boiler is connected with the centralized controller through the signal transmission line for centralized control and adjustment.