Extracting system of thermal energy of water of rivers, lakes and seas below the ice surface

Abstract

A heat extractor of the water under ice comprises serially connected heat collector, heat boost and heat radiator, and at least two parallel middle heat exchangers between the heat collector and heat booster, wherein, each middle heat exchanger is formed by shared heat exchange pump, shared energy output coil tube, and parallel connected valves and energy input coil tubes to form a circuit which contains cold-proof liquid; the energy input coil tube of each middle heat exchanger is coupled to relative parallel connected heat exchange coil tube; the shared energy output coil tube is coupled to the evaporator. The invention uses valve to control the middle heat exchangers work serially, to extract heat from the water around 0Deg. C.

Description

technical field [0001] The invention relates to a thermal energy extraction system, in particular to a thermal energy extraction system for rivers, lakes and seawater under the ice surface. Background technique [0002] Extract low-grade heat energy from the water of rivers, lakes and seas, upgrade it to high-grade heat energy through heat pumps, and provide heating for buildings in winter. This is a very good energy-saving and environmentally friendly energy source. However, due to the cold winter in the northern region, the surface of rivers, lakes and seas will be covered by ice, and the water under the ice is close to zero. It will freeze, so this environmentally friendly energy will not be well utilized. The thermal energy extraction system shown in Figure 1, the system includes a thermal energy collection device 1, a thermal energy lifting device 13 and a cooling device 12 connected in series in sequence, and the thermal energy collection device 1 includes rivers, lak...

AI Technical Summary

Problems solved by technology

The thermal energy extraction system shown in Figure 1, the system includes a thermal energy collection device 1, a thermal energy lifting device 13 and a cooling device 12 connected in series in sequence, and the thermal energy collection device 1 includes rivers, lakes and seawater under the ice surface, an energy input pump 2 and A circuit composed of heat collecting and heat exchanging coils 3, the thermal energy raising device 13 includes a circuit composed of an evaporator 7, a compressor 8, a condenser 9 and an expansion valve 14 connected in series in sequence, and the heat dissipation device 12 includes a circuit composed of a heat dissipating heat exchanging coil 10 , the circuit formed by the energy output pump 11 and the radiator, a refrigerant is arranged in the circuit of the thermal energy raising device 13, and what flows in the circuit of the thermal energy harvesting device 1 is near-zero seawater from rivers and lakes, which is released in the condenser 9 The heated refrigerant drops to about minus 5°C after passing through the expansion valve 14, and rises to about 0°C after passing through the evaporator 7, while the water in the heat collection and heat exchange coil 3 coupled with the evaporator 7 is released Gradually freezes after heat, rendering the entire system inoperable

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