Solar-ground source heat pump coupled energy supply system with double buried pipe groups

Abstract

The invention relates to a solar energy-ground source heat pump coupling type energy supply system provided with two buried pipe groups. The solar energy-ground source heat pump coupling type energy supply system provided with the two buried pipe groups is characterized in that the energy supply system comprises a solar heat collector, a heat-storage water tank, a ground source heat pump unit, the first buried pipe group, the second buried pipe group, a building tail end device, a heat-collection circulating water pump, a heat-storage circulating water pump, a ground source side circulating water pump, a first heat-storage control valve, a second heat-storage control valve, a first ground source side control valve, a second ground source side control valve, a first pipe group flow regulation valve, a second pipe group flow regulation valve, a first pipe group heat meter and a second group pipe heat meter; the solar heat collector is sequentially connected with the heat-storage water tank and the heat-collection circulating water pump through pipelines, namely a heat collection cycle is formed, and hot water generated by solar energy is collected; and the hot water outflow end of the heat-storage water tank is sequentially connected with the first heat-storage control valve, the heat-storage circulating water pump, the first buried pipe group, the second heat-storage control valve and the backflow end of the heat-storage water tank through pipelines, so that a heat storage cycle is formed.

Description

technical field [0001] The invention belongs to the technical field of building heating, cooling and hot water supply, and specifically relates to a solar energy-ground source heat pump coupled energy supply system with double buried pipe groups. Background technique [0002] With the improvement of people's living standards, people's requirements for the comfort of buildings are getting higher and higher. The resulting building energy supply problem is becoming more and more serious. my country's primary energy consumption accounts for about 20% of the world's total, equivalent to about 3.62 billion tons of standard coal, and energy consumption per unit of GDP remains high. At present, my country's building energy consumption accounts for about 27% of the total energy consumption of the whole society, of which heating and cooling energy consumption accounts for about 60% of the entire building energy consumption. Therefore, reducing the heating and air conditioning energy ...

AI Technical Summary

Problems solved by technology

[0004] Ordinary solar ground source heat pump systems are usually in the form of a single buried pipe group or a hot water storage tank as the heat source for the evaporator of the unit. The long-term operation of the system will easily cause the ground temperature to rise or fall, which will affect the energy efficiency of the operation. Therefore, a set of buried pipes It is difficult for the group and unit system to meet the comprehensive energy supply demand at the same time

There are also two independent buried pipe groups with two heat pump units for dual-system heating mode (ZL201110146044.1). Although the problem of unbalanced heating is solved, the system uses two units to provide heat separately. The operating load deviates greatly from the rated load, the energy efficiency of the unit is affected, and the investment is large

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