Geothermal heating-energy storage integrated system running at low cost and application
A low-cost, energy-storage technology, applied in the geothermal heating-storage integration system and the geothermal heating-storage field, can solve the problems of high return water temperature of the heating system and high system operating costs, and achieve the effect of reducing construction costs
Pending Publication Date: 2021-10-22
TIANJIN UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a low-cost operating geothermal heating-energy storage system that realizes the efficient utilization of geothermal energy, and solves the problems of excessive return water temperature and high system operating costs in the existing heating system The system can realize segmental utilization of geothermal temperature, and at the same time utilize peak and valley electricity prices to realize low-cost operation of the system
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0027] A low-cost geothermal heating-energy storage integrated system, such as figure 1 As shown, it includes a geothermal direct heating unit, a heat pump heating unit, an energy storage unit, and a thermal user unit. The direct heating unit includes a hot water well, and the outlet end of the hot water well is connected to the interlayer inlet end of the high-temperature plate heat exchanger. The high-temperature plate heat exchanger One of the heat exchange outlets of the heat exchanger is connected to the inlet of the water collector, and the other is connected to the inlet of the energy storage device of the energy storage unit. The outlet of the water collector is connected to the user inlet of ...
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The invention relates to a geothermal heating-energy storage integrated system running at low cost, which comprises a geothermal direct heating unit, a heat pump heating unit, an energy storage unit and a heat consumer unit; the direct heating unit and the heat pump heating unit supply heat to the heat consumer unit through a water collector and store energy to the energy storage unit at the same time; circulating water from the heat consumer unit is connected to the geothermal direct heating unit and the heat pump heating unit through a water distributor for circulating heating; the outlet end of the energy storage unit is connected with the geothermal direct heating unit and the heat pump heating unit; energy is supplied to the direct heating unit and the heat pump heating unit when heating is not conducted; another branch of the energy storage unit is connected with an inlet of the water collector and forms an energy release heating loop of the energy storage unit through a branch of backflow of the water distributor; and when the direct heating unit and the heat pump heating unit do not work, heat is supplied to the heat consumer unit. The system adopts the water distributor and the water collector to adjust the water supply and return pressure of a user, and utilizes three heating modes of geothermal direct heating, heat pump system heating and energy storage heating to balance the pressure of each part, so that heating and energy storage are operated efficiently.
Description
technical field [0001] The invention belongs to the field of utilization of geothermal resources, and relates to geothermal heating-energy storage technology, in particular to a low-cost geothermal heating-energy storage integrated system and its application. Background technique [0002] With the continuous increase of global energy demand, the problem of environmental pollution is becoming more and more serious, so the development and utilization of renewable energy has become the main direction of energy development today. Geothermal energy is widely used in various fields such as power generation and heating because of its large reserves, stability and reliability. [0003] However, my country's geothermal resources are mainly medium and low temperature geothermal resources, and there are few geothermal resources suitable for power generation. Most of the geothermal resources are suitable for heating and other fields with heat demand. At present, most of the geothermal ...
Claims
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IPC IPC(8): F24D3/10F24D3/18F24D11/02F24D12/02F24D19/10F24T10/20
CPCF24D3/10F24D3/1066F24D3/18F24D11/0214F24D12/02F24D19/1015F24D19/1039F24T10/20Y02A30/60Y02E10/10Y02B10/40Y02B30/00
Inventor 吕心力张家琪张伟余浩崔志伟柳佳丽任亚鹏孟庆瑶刘东喜张亚林岳雯朱天际
Owner TIANJIN UNIV