Multi-energy complementary heat supply system applied to independent heating supply system

Abstract

The invention discloses a multi-energy complementary heat supply system applied to an independent heating supply system. The multi-energy complementary heat supply system comprises a heat supply unit, a heat storage unit and heat taking units. The heat supply unit comprises a solar heat collection system, an air source heat pump system and a gas heating water heater system, the heat storage unit uses a heat storage system with an upper coiled tube and a lower coiled tube, and the heat taking units are a domestic hot water system and a heating system respectively; the solar heat collection system is connected with the lower heat exchange coiled tube of the heat storage system with the upper coiled tube and the lower coiled tube; the air source heat pump system is directly connected with a water inlet-outlet port in the middle part of the heat storage system with the upper coiled tube and the lower coiled tube; the domestic hot water system is connected with an upper water inlet-outlet port and a lower water inlet-outlet port of the heat storage system with the upper coiled tube and the lower coiled tube through a gas heating water heater; and the heating water system is connected with the upper heat exchange coiled tube of the heat storage system with the upper coiled tube and the lower coiled tube through the gas heating water heater. The multi-energy complementary heat supply system disclosed by the invention uses many kinds of energy for realizing complementary heat supply, increases the heat efficiency of the system and the utilization efficiency of the energy, reduces the discharge of pollutants, and increases the integration degree of the device.

Description

technical field [0001] The invention relates to a heating device, in particular to a multi-energy complementary heating system and process applied to an independent heating system. Background technique [0002] In recent years, my country's building energy consumption accounts for about 30% of the country's total energy consumption, of which urban heating energy consumption in northern regions accounts for 36% of the country's total urban building energy consumption. 15% to 20% of the total energy consumption. Most of the traditional decentralized heating systems consume non-renewable energy and cause serious pollution, resulting in frequent smog in winter. Gas heating water heaters can provide heating and domestic hot water conveniently and quickly, while air source heat pump systems and solar collectors can provide people with heating and domestic hot water at low cost. If the gas heating water heater is used alone for heating, the energy density is high, and the user loa...

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Problems solved by technology

[0003] In patent 201320719890.2 (wall-hung boiler and air source heat pump heating and heating combination device), the structure of the wall-hung boiler and the air-source heat pump is coupled together, so that the air-source heat pump can provide hot water alone or start the wall-hung boiler and the air-source heat pump to supply heat at the same time With heating, the heating device mixes heating and domestic hot water, which cannot guarantee the quality of domestic hot water and when the outdoor temperature is low and the COP of the air source heat pump is low, the wall-hung boiler cannot be used alone, resulting in a decrease in system efficiency; In the patent 201120207700.X (multi-energy water heater device), the gas water heater and the heat pump water heater are combined to improve the energy efficiency of the heat pump water heater in a low temperature environment, but this device can only provide domestic hot water and cannot At the same time meet the heating demand; in the patent 201120134903.0 (heating and heating system using solar energy, air source and gas complementary use), firstly the heating and domestic hot water in the water tank are mixed, and the quality of domestic hot water cannot be guaranteed. The water outlet is connected to the heating water outlet and domestic hot water outlet at the same time. Since the heating capacity of gas water heaters is generally small, when the temperature in the water tank is low, the gas water heater cannot provide sufficient heat to meet the heating and domestic hot water loads at the same time; patent 201120135392.4( In a solar energy, geothermal, gas complementary combined heating system), it is also impossible to distinguish domestic hot water and heating water systems. When the heat load is large, the use of gas water heaters cannot meet the hot water and heating loads at the same time; the patent In 201120459129.0 (intelligently controlled solar energy, air source and gas combined heating and heating system), it is also impossible to distinguish the domestic hot water system from the heating system, the quality of domestic hot water cannot be guaranteed, and the heating capacity of the gas water heater is small When it is large, it cannot meet the demand; in the patent 201110137825.4 (combined heating device of solar energy, heat pump and gas wall-hung boiler), when the heating unit of solar energy and heat pump cannot meet the heating conditions, the gas heating water heater is started. Heating the water in the heating circulation pipeline, and then the circulating water pump sends hot water through the hot water outlet into the heat exchange coil to heat the water tank, and the water from the heat exchange coil of the water tank enters the heating water inlet and enters the water heater for heating. This control system is relatively complicated. , Difficult to operate; in the patent 201120170999.6 (combined heating device of solar energy, heat pump and gas water heater), there are three heat exchange coils in the water tank, and the heating equipment heats the water tank through indirect heat exchange, and the heat exchange effect is poor, which reduces the heating equipment. Thermal efficiency

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