Terrestrial heat generating system

Abstract

The invention discloses a terrestrial heat generating system, and belongs to the technical field of generating systems. The terrestrial heat generating system comprises a generator, a heat exchanger, an absorbing device and a steam turbine; a water inlet of a heat exchange pipe of the heat exchanger communicates with a shell pass of the absorbing device through a solution pump, and a water outlet of the heat exchange pipe of the heat exchanger communicates with the shell pass of the generator; a steam outlet which communicates with an inlet of the steam turbine is arranged in the top part of the generator; an outlet of the steam turbine communicates with a housing of the absorbing device; a shell pass water inlet of the heat exchanger is connected with a shell pass water outlet of the generator; the shell pass water outlet of the heat exchanger is connected with the shell pass water inlet of the absorbing device through a throttle valve; a hot water circulating pipe is arranged in the generator; a cold water circulating pipe is arranged in the absorbing device; ammonia and water mixture is used as the circulating medium. The terrestrial heat generating system has the advantages that the ammonia and water mixture is used as the circulating medium, thus the useful energy loss caused by evaporating and condensing can be reduced, and the circulating generating efficiency can be raised.

Description

technical field [0001] The invention relates to a power generation system, in particular to a geothermal power generation system. Background technique [0002] At present, geothermal resources that can be used for power generation mainly include hydrothermal resources, low-pressure resources and hot dry rock resources. Hydrothermal resources have been used for commercial purposes, and the utilization of two geothermal resources is still in the experimental stage. The geothermal water power generation systems used in practice are mainly flash evaporation systems and duplex circulation systems. The ideal efficiency that can be achieved at different geothermal water temperatures and the ideal maximum power generation per unit mass of hot water also give the highest efficiency limit of the thermodynamic Carnot cycle. When the temperature of the heat source is lower than 673K, the system efficiency of the Rankine cycle using water as the working fluid is low, and the economic an...

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Problems solved by technology

The power cycle using water as the working fluid-Rankine cycle has a constant temperature isothermal phase change process in the evaporation and condensation process, the heat exchange of the working fluid, heat source and cold source often cannot achieve the best temperature matching, resulting in a large effective energy loss

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