Heat-pump anti-seasonal energy storage device and energy storage method thereof

Abstract

The invention relates to a heat-pump anti-seasonal energy storage device, comprising an energy-storage reservoir, a water-source heat pump and an air conditioner, wherein, one end of the water-source heat pump is connected with a water inlet pipe and a water outlet pipe, and the other end of the water-source heat pump is connected with a water supply pipe and a water return pipe; the air conditioner is connected between the water supply pipe and the water return pipe; the bottom of the energy-storage reservoir and a reservoir wall are laid with a flexible waterproof insulating layer; working-medium water body is stored in the energy-storage reservoir, and the top of the working-medium water body is equipped with a suspending heat-insulating plate; the upper side of the heat-insulating plate and the wall at the upper side of the energy-storage reservoir form a surface-balance reservoir, and balance water body is stored in the surface-balance reservoir; the energy-storage reservoir is equipped with a balancing mechanism for equalizing the pressure of the working-medium water body with the pressure of the balance water body; and one end of the water inlet pipe and one end of the water outlet pipe are communicated with the working-medium water, and a circulating water pump is connected between the water inlet pipe and the water inlet port of the water-source heat pump and between a water returning opening and the water return pipe. The invention has the characteristics of simple structure, easy balanced stress, low manufacture cost of the water body, long cycle time, electricity and energy conservation.

Description

technical field [0001] The invention relates to a heat pump anti-seasonal energy storage device and an energy storage method thereof, belonging to the technical field of groundwater heating. Background technique [0002] Water source heat pump technology is a low-temperature and low-level thermal energy resource formed by using solar energy and geothermal energy absorbed in shallow water sources on the earth's surface. It adopts the principle of heat pumps and uses a small amount of high-level electric energy input to realize a technology that transfers low-level thermal energy to high-level thermal energy. At present, the air-conditioning system using underground energy storage pools is mainly composed of underground storage pools, electric boilers and water source heat pumps. During the low-peak hours at night, electric energy is converted into heat energy and stored in energy storage pools to solve 24-hour building heating. [0003] However, in the underground energy stor...

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Problems solved by technology

[0004] 1), many stress points and complex structure

[0005] Since the energy storage pool is built underground and adopts the rigid structure of reinforced concrete, it is affected by the buoyancy of groundwater, its own gravity, the supporting force of load-bearing ground piles, the outer soil pressure of the surrounding facades, the water pressure in the inner pool, the ground covering soil pressure and the settlement velocity at different points. Different shear forces, transverse and longitudinal shear forces formed by seismic waves, etc., make the force calculation of underground energy storage tanks very complicated. There are many safety factors to consider, the safety factor is large, and the structure and reinforcement requirements are very strict. high

[0006] 2) The energy storage pool per unit volume is expensive

[0007] Due to the complex structure and stress characteristics of the underground energy storage pool, the construction cost of the energy storage pool remains high. Usually, the cost of the underground energy storage pool is 450 yuan / m 3 ~580 yuan / m 3 If there is a special geological structure, the construction cost of the underground energy storage pool will continue to increase

[0008] 3) Limited by the terrain and structure, the volume of the energy storage pool is limited

[0009] Restricted by the project land and the characteristics of the energy storage pool, the volume of the underground energy storage pool is generally thousands of cubic meters, and the energy storage capacity of the air conditioning system that can be provided is extremely limited, generally only enough for one building or several adjacent buildings. energy supply demand, unable to meet the requirements of regional energy supply

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