Double-acting Stirling engine adopting hybrid heat sources

Abstract

The invention relates to a double-acting Stirling engine adopting hybrid heat sources. The double-acting Stirling engine is composed of a heater, air cylinders, a cooler and heat regenerators; both the number of the air cylinders and the number of the heat regenerators are four; the air cylinders are uniformly distributed in the circumference and are arranged on an engine body; the heat regenerators are also uniformly distributed in the circumference and are arranged on the engine body; the heat regenerators and the air cylinders are arranged in a staggered mode; the heater comprises a transparent glass circular barrel, a heat absorbing pipe cavity and a plurality of heat absorbing pipes, wherein the transparent glass circular barrel is provided with a reflecting cone the at the bottom, the heat absorbing pipe cavity is formed in the outer side of the transparent glass circular barrel, the heat absorbing pipes are positioned in the heat absorbing pipe cavity; thermal insulation bodiesare arranged at the outer side of the heat absorbing pipe cavity and the bottom of the transparent glass circular barrel; heat regenerator collecting pipes are arranged at the top parts of the heat regenerators; air cylinder collecting pipes are arranged at the top parts of the air cylinders and communicate with the heat regenerator collecting pipes through the heat absorbing pipes; and the heat absorbing pipes are shaped like inverted U and are vertically arranged. The engine has the advantages that the multiple heat sources can be adopted for heating, and all-weather operations can be realized on the premise of fully utilizing solar energy.

Description

technical field [0001] The invention relates to a double-acting Stirling engine using a composite heat source, belonging to the technical field of heat engine utilization. Background technique [0002] The Stirling Engine is an externally heated closed-cycle piston engine. In this type of machine, the working medium (generally hydrogen, helium or air) is enclosed in a circulation loop, and is heated externally, expands at a higher temperature and pressure, and pushes the piston to move; the working medium is cooled by a cooler, The working fluid is compressed at a lower temperature and pressure to obtain positive cycle work. Its thermodynamic process is carried out according to the Stirling cycle, that is, it consists of four reversible processes of isothermal heat absorption, constant volume heat release, isothermal heat release and constant volume heat absorption. [0003] The currently commonly used double-acting Stirling engine is generally composed of heaters, cylinde...

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Problems solved by technology

[0004] However, the traditional Stirling engine can usually only be heated by one heat source. For example, when solar heating is used, the heat absorber needs to be designed as an efficient solar-heated heat-absorbing chamber, and other heating methods cannot be used. Conversely, if using Heating method, you can no longer use solar energy to heat

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