What kind of pollution will be caused by the use of heat engines, what are the energy losses in heat

There are two main types of fuels for heat engines: coal and petroleum products. Among them, coal-fueled heat engines generate pollutants such as flue gas, dust, and sulfur dioxide when burned, and new pollutants are produced due to chemical reactions.

The heat engine fueled by petroleum products will generate nitrogen dioxide and ozone, which will cause great harm to the human body. Among these pollutants, sulphur dioxide enters the atmosphere and combines with water vapor to produce acid rain. More than 30% of China's land is in acid rain areas, and the economic losses caused by acid rain reach tens of billions of yuan every year.

Nitrogen dioxide is a highly toxic corrosive agent, and when inhaled into the lungs, it produces nitrite and nitric acid, causing chest tightness, coughing, wheezing and even emphysema. Moreover, a large amount of heat is generated when the heat engine works, causing the phenomenon of heat islands, which causes the temperature in the center of the city to rise by 3 4 degrees. Not only that, but most of the fuels used in heat engines are non-renewable resources, such as coal, oil, etc., which accelerates the consumption of these resources.

The heat engine works because fossil fuels are burned.

The combustion of fossil fuels produces some toxic substances, such as nitric oxide, carbon monoxide, etc.

There will be greenhouse gases, gases that destroy the ozone layer, and gases that form acid rain

Pollutants such as flue gas, dust, and sulfur dioxide are generated.

Nitrogen dioxide, ozone, etc. are generated.

Acid rain is generated. caused by the phenomenon of heat islands, which led to an increase in the temperature of the city center by 3 to 4 degrees.

Categories: Education Academic Exams >> High School Entrance Examination.

Problem description: What are the energy losses in heat engine operation? What else is polluted? Assignment questions for junior 3. .

Analysis: Energy loss in the heat engine is inevitable, there are three main types: internal energy of exhaust gas, heat dissipation loss, and mechanical friction loss, of which exhaust gas loses the largest energy.

Contamination in the operation of heat engines.

Exhaust gas pollution, fuel combustion process, produce harmful carbon dioxide, carbon monoxide, sulfide and other old cracks, resulting in air pollution. Heat engine work in industrial and mining enterprises and vehicles produces the most serious pollution.

Solution: Improve the combustion equipment, adopt branch destruction central heating, and install smoke and dust removal devices.

Improve the comprehensive utilization rate of internal energy.

Replace direct burning of coal and fuel oil with burning of their industrial by-products; The primary utilization of internal energy is changed to the secondary utilization of multiple explosive and reserved (such as heating with waste heat, etc.).

Fully develop and utilize energy sources with little or no pollution (such as solar energy, etc.).

Thermal pollution can alter the body's chromosomes, cause adaptation problems in animals, and cause trees to wither due to insufficient water supply!

The combustion of fossil energy when the heat engine is activated will release a large amount of exhaust gases, and at the same time produce high decibel noise, which will cause pollution to the environment

So the answer is: exhaust gas

In life, the heat engine is mainly gasoline engine and diesel Xinhe engine, they provide power to people at the same time to the environment also cause pollution to the environment, according to the inadequacy of fuel combustion, it can be known that there will be exhaust gas pollution, at the same time, due to the vibration of the cleaning parts and noise pollution

So the answer is: noise; Exhaust gases

The exhaust gas emitted when the heat engine is working will cause air pollution, and the noise generated will cause noise pollution

So the answer is: atmosphere; Noise.

Kiss, <>

We're glad to answer your questions! What are the hidden dangers and suggestions of the heat engine: when the heat engine is burned, it will produce pollutants such as flue gas, dust, sulfur dioxide, etc., and new pollutants will be produced due to chemical reactions.

Suggestions: The performance of motor vehicles can be improved, environmentally friendly fuels can be used as much as possible, and the exhaust quality of automobiles can be improved; When traveling, try to take public transportation and other extended informationThe nitrogen dioxide produced by the heat engine is a highly toxic corrosive agent, and when inhaled into the lungs, it produces nitrite and nitric acid, causing chest tightness, coughing, wheezing and even emphysema. I hope mine can help you!

Engine. When working, it will produce noise and emit exhaust gases into the air, and if a large number of heat is used, it will cause environmental pollution; Therefore, the basal cavity of the family is selected