The thermal process adopts the energy-saving method of jet pumping

Abstract

The present invention relates to the field of thermodynamics. Disclosed is an energy-saving method for a thermal dynamic process using jet exhaust. A high-parameter dynamic air source is used to improve the thermal efficiency, and a circulated air exhaust method is adopted by the jet exhaust thermodynamic system or, for a multi-level jet exhaust system with more than one level, a composite jet system using a combination of serial, parallel and circulated; via combining the jet exhaust system to an thermal conversion device such as an air turbine and the like, the high-parameter air source first enters the jet exhaust system and then enters the air turbine for full work so as to achieve high efficiency operation. Also disclosed is a jet refrigerating solution for reducing throttle loss. The energy-saving method can be widely used in various energy-saving fields of thermal energy and dynamic processes, and thermal purification systems for sea water or other water, with high efficiency and low cost.

Description

technical field [0001] The invention belongs to the field of thermal power and refrigeration. Background technique [0002] In the field of thermal power, the development of large-capacity and high-parameter units is always pursued in order to pursue high efficiency, but the two parameters of temperature and pressure are always difficult to meet this goal at the same time. Internal combustion engines, gas turbines, and rocket engines have high combustion temperatures but the limited flue gas pressure causes the exhaust gas temperature to be too high during operation. The steam turbine unit of a coal-fired power plant can obtain supercritical pressure, although the temperature and pressure are simultaneously reduced in the steam turbine to reach a low parameter However, the initial parameter of steam temperature is only about 550°C. At present, the thermal efficiency of a single advanced large-scale thermal unit does not exceed 50%, and the thermal efficiency of internal comb...

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Problems solved by technology

[0004] In addition, micro-grid distributed power generation is of great significance in terms of power security, renewable energy utilization, and users' adoption of cogeneration of heat, power and cooling to achieve high efficiency and energy saving. Parameters, especially pressure parameters are difficult to go up

Patent application CN200810182738.9 proposes a thermodynamic booster thermodynamic cycle method, which is an effective solution for small steam units to achieve high-parameter steam, but it is difficult to have corresponding high-parameter models for the required small turbogenerators. Due to the low thermal efficiency of small units, its extensive development is seriously restricted

[0005] In the fields of refrigeration and heat pumps, in the refrigeration cycle, working medium expansion and refrigeration are achieved through throttle valves or fine tubes to achieve depressurization and expansion, giving up the use of expansion work. Some data suggest that hydraulic motors and other equipment are used to recover expansion work, but the investment cost and efficiency are relatively low. Difference

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