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Evening, event for Summer Course Students in Al-Safiyah & Al-Wahdah Districts in Sanaa
[23 April 2025]
Al-Bayda Governor reviews services at Aween Health Center in Al-Sawma’ah
[23 April 2025]
Tribal meetings in Dhamar declare mobilization & readiness to confront aggression against Yemen & Gaza
[23 April 2025]
President directs Ministry of Economy to take measures to boycott American & Israeli products
[23 April 2025]
Discussing Performance of Slaughterhouses Corporation Branch in Ibb
[23 April 2025]
 
  International
Iran: Zionist Entity’s attempts to undermine diplomatic path have become Clear to all
[23 April 2025]
Euro-Med Monitor Exposes: French Embassy Coordinates with Israeli Occupation to Expel Gaza's Elite
[23 April 2025]
Enemy forces attack palestinians during raid on Beit Fajjar in Bethlehem
[23 April 2025]
Palestinian Resistance Committees: Gaza Massacres committed with US decision & weapons
[23 April 2025]
Palestinian red crescent demands international investigation into "Massacre of Paramedics" following international movement's call
[23 April 2025]
 
  Reports
Yemeni people are more cohesive in face of misinformation campaigns & hatred trumpets
[22 April 2025]
US aggression's targeting of cemeteries & markets is evidence of failure and confusion
[22 April 2025]
US President serious threat to world peace
[22 April 2025]
Millions of people in capital & governorates declare their readiness to confront American escalation and continue to support Gaza as principled position
[22 April 2025]
Successive Scandals in U.S. Administration over Yemen war management reveal deep-seated confusion, folly, & criminality
[21 April 2025]
 
  US-Saudi Aggression
US-Saudi-Emirati crimes on this day in history
[23 April 2025]
US-Saudi-Emirati crimes on this day in history
[22 April 2025]
US-Saudi-Emirati crimes on this day in history
[21 April 2025]
US-Saudi-Emirati crimes on this day in history
[20 April 2025]
US-Saudi-Emirati crimes on this day in history
[19 April 2025]
  International
Russian Scientists Discover Method to Reduce Aircraft Engine Emissions
Russian Scientists Discover Method to Reduce Aircraft Engine Emissions
Russian Scientists Discover Method to Reduce Aircraft Engine Emissions
[Mon, 24 Mar 2025 19:42:44 +0300]

Moscow - Saba:
Fuel releases thermal energy when it burns, which helps power gas turbine engines. For fuel to burn properly, it must be in contact with air.

Heating helps this happen faster and more efficiently. However, current heating methods result in emissions of carbon dioxide and nitrogen oxides, which are harmful to human health and the environment in large quantities.

Scientists at Perm Polytechnic University studied the processes that occur when fuel gas is heated and found that it is best to do this in front of the engine's combustion chamber. This reduces the emission of harmful substances, such as carbon monoxide, by 24%.

Environmental problems are becoming increasingly urgent, and scientists and engineers are actively searching for ways to reduce harmful emissions from gas turbine engines.

One such area is the study of low-temperature lean combustion, a process in which fuel is burned at relatively low temperatures and with a large excess of air.

This reduces the release of harmful substances such as nitrogen oxides, which typically form at high temperatures.

However, at lower temperatures, combustion may be less stable and carbon monoxide emissions may increase.

Typically, the final fuel mixture is heated inside the engine's combustion chamber due to the flame temperature. Scientists at Perm Polytechnic University have discovered how heating the fuel gas before entering the combustion chamber affects the combustion process and emissions of harmful substances.

The scientists used an experimental setup to study the combustion characteristics of a lean mixture, where air and fuel are supplied.

Experimental studies have shown that preheating the combustion chamber reduces carbon monoxide emissions by 24% and slightly increases nitrogen oxide emissions (15%).

However, it is important to note that the level of toxic emissions is still significantly lower than during high-temperature combustion, which is used in conventional gas turbine engines, says Alina Shilova, senior lecturer in the Department of Rocket, Space Engineering and Power Systems at Perm Polytechnic University. Additionally, the researchers have developed modified semi-empirical expressions that more accurately predict carbon and nitrogen oxide emissions from low-temperature lean combustion.

The article was published in the BNIBU Bulletin, and the study was conducted as part of the Privyt 2030 Academic Strategic Leadership Program. It was reported by the Nauchnaya Rossiya portal.


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UPDATED ON :Wed, 23 Apr 2025 21:33:51 +0300