The principle of the Stirling engine and its introduction

Stirling engine.

The principle is to use the energy transformation brought about by the temperature difference. Thermal expansion and cold contraction.

Then quickly dissipate heat from the heated area.

The cycle consists of two isothermal processes and two constant volumes.

The recuperation process is composed and belongs to the generalized Carnot cycle.

one. The key to achieving the Stirling cycle is heat recovery. Stirling's conception of a heat engine.

It consists of two cylinder-piston clamps and a regenerative recuperator.

The factors restricting the practical application of the Stirling cycle are: isothermal heat absorption and isothermal heat release of high and low temperature heat sources are difficult to achieve, heat recovery of recuperator is difficult to achieve, working fluid gas residue inside regenerative heat recuperator, resistance loss of regenerative heat recuperator, and piston stroke control. Toy-grade Stirling cycle engine and Stirling chiller.

There are many products that have appeared, but the impact of these constraints on the practical Stirling machine has rapidly increased, resulting in a rapid decline in its competitiveness.

Stirling engine. It is powered by the expansion of gas by heat and cold compression.

The gas is in the heat displacement cylinder, driven by the gas shifter, and flows back and forth between the cold end and the hot end, and the air is scattered when it flows to the hot end, and the heat expands to push the power piston outward. When the air flows to the cold end, it shrinks by the cold, attracting the power piston to move inward. The power piston outputs power outwards and drivesCrankshaftTurn.

Because the air does its work when it is cold and hot.

Therefore, the theoretical efficiency of the Stirling engine is higher than that of the internal combustion engine, because when the internal combustion engine is working, the energy in the hot exhaust gas is wasted.

1. Suitable for all kinds of energy. Fuels, whether liquid, gaseous or solid, can use virtually any high-temperature heat source when heated indirectly with a heat-carrying system such as heat pipes.

Such as: biomass energy.

firewood, etc.), while the engine itself (except for the heater) does not need to be changed at the same time, the heater does not need to be pressurized by the compressor, the requirements can be met by using a general fan, and the fuel is allowed to have a high impurity content; solar energy, which is one of the more common uses of Stirling engines; Radioisotope.

It is commonly found in AIP systems used in submarines and deep space.

2. Low noise. When the heat engine is running, because the combustion of the fuel is continuous, it avoids the knocking work and intermittent combustion process similar to the internal combustion engine, so as to achieve the advantage of low noise.

This allows it to be used on submarines for better concealment. The capacity of the unit is from 20-50kw, and the system capacity can be increased or decreased according to local conditions. The structure is simple, the number of parts is 40% less than that of the internal combustion engine, the price reduction space is large, and the maintenance cost is also low.