魔法物理初三3-(3-6)（Magic physics III 3- (3-6)）.docVIP

魔法物理初三3-(3-6)（Magic physics III 3- (3-6)） * three, internal combustion engine * * four, rocket * * five, engine efficiency * * six. Utilization of internal energy and environmental protection * Walk into the physical world The gas engine came back The steam engine is an external combustion engine, it eats coal, efficiency is low in.1807, British George, Kailai tried a Stirling engine, instead of steam engine with air or hydrogen working substance steam. But power is very low, only 0.18kW--13.68kW, but has the advantages of safe and reliable. Later, due to internal combustion engine the rise, people are no longer on Stirling engine. With the engine energy source -- oil crisis, environmental pollution is becoming increasingly serious, in recent decades, many people have started to develop Stirling engine. Figure IMG001 is a solar generator. The solar reflector converged to the heat absorbing cavity heat engine in the helium can add heat pipe, temperature increase increase the volume expansion of the piston to do work, the helium temperature drops has been pressed into the heating pipe in the re heated and expanded. The piston of this Stirling engine is a permanent magnet. It moves up and down, causing the coils around the cylinder to emit electricity Stirling engine revived immediately shows strong vitality: it is accompanied by satellite to space travel, a 5.1 kW of power; it drives the pump in the desert, in the scorching sun for people to take out the dew; it silent power, 30 meters away will not hear the sound of it; it can effectively use of various energy sources, many become the heart of the machine. From 70s onwards, some of the heat inventor machine to replace the internal combustion engine. The United States tried to use solar Stirling engine instead of gasoline engine to drive the lawnmower, and achieved gratifying results in.1971 the first car with a Stirling engine powered bus, later, Italy and the United States have also created 84.5 kW and 125 kW car ho