- What for us heat engines
- Where heat engines are used
- The environmental problem of the use of heat engines
Conservation of nature is an important task, because moving the civilized world forward leads to inevitable difficulties and risks in the matter of environmental pollution. Among other social hazards one of the first places is occupied by environmental problems associated with the use of heat engines.
What for us heat engines
Every day we deal with engines that drive cars, ships, production equipment, railway locomotives and airplanes. It was the emergence and widespread use of heat engines that quickly advanced the industry.
The environmental problem of using heat engines is that emissions of thermal energy inevitably lead to heating of surrounding objects, including the atmosphere. Scientists have long struggled with the problem of melting glaciers and rising sea levels, considering human activity to be the main factor influencing. Changes in nature will lead to a change in the conditions of our life, but despite this, energy consumption increases every year.
Where heat engines are used
Millions of cars on internal combustion engines are engaged in the transport of passengers and goods. Powerful diesel locomotives run along railways, and steamboats run along waterways. Airplanes and helicopters are equipped with piston, turbojet and turboprop engines. Rocket engines "pushing" space stations, ships and satellites of the Earth. Internal combustion engines in agriculture are installed on combines, pumping stations, tractors and other objects.
The environmental problem of the use of heat engines
Machines used by humans, heat engines, automobile production, the use of gas turbine propulsion systems, aircraft and launch vehicles, pollution of the aquatic environment by ships - all this has a devastating effect on the environment.
First, the combustion of coal and oil releases nitrogen and sulfur compounds into the atmosphere, which are harmful to humans. Secondly, atmospheric oxygen is used in the processes, whose content in the air due to this decreases.
Emissions of harmful substances into the atmosphere are not the only factors influencing the nature of heat engines. The production of mechanical and electrical energy cannot be carried out without the removal of significant amounts of heat into the environment, which can not but lead to an increase in the average temperature on the planet.
Thermal pollution is aggravated by the fact that combustible substances increase the concentration of carbon dioxide in the atmosphere. This, in turn, leads to a greenhouse effect. Global warming is becoming a real danger.
The environmental problem of the use of heat engines lies in the fact that the combustion of fuel cannot be complete, and this leads to the emission into the air that we breathe of ash and soot flakes. According to statistics, around the world power plants annually dump into the air more than 200 million tons of ash and more than 60 million tons of sulfur oxide.
Ecological problems associated with the use of heat engines, trying to solve all civilized countries. Introduces the latest energy-saving technologies to improve heat engines. As a result, the energy consumption for the production of the same product is significantly reduced, reducing the harmful effect on the environment.
Thermal power plants, internal combustion engines of cars and other cars in large quantities are dumped into the atmosphere and then into the soil harmful for all living waste, for example, chlorine, sulfur compounds (when burning coal), carbon monoxide, nitrogen oxides, etc. Automobile engines emit about three tons of lead annually.
At nuclear power plants, another environmental problem of using heat engines is the safety and disposal of radioactive waste.
Due to the incredibly high energy consumption, some regions have lost the ability to self-purify their own airspace. The operation of nuclear power plants helped to significantly reduce harmful emissions, however, for the operation of steam turbines requires a huge amount of water and a large space under the ponds to cool the exhaust steam.
Unfortunately, mankind cannot stop using heat engines. Where is the way out? In order to spend an order of magnitude less fuel, that is, to reduce energy consumption, it is necessary to increase the efficiency of the engine for the same work. The fight against the negative consequences of the use of heat engines is only to increase the efficiency of energy use and switch to energy-saving technologies.
In general, it would be wrong to say that the global environmental problem of using heat engines is not solved. An increasing number of electric locomotives are replacing ordinary trains; become popular cars on batteries; energy-saving technologies are being introduced into the industry. It is hoped that environmentally friendly aircraft and rocket engines will emerge. The governments of many countries are implementing international environmental protection programs against the pollution of the earth.