Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
404 4 |
Ultima descărcare din IBN: 2021-08-21 12:14 |
Căutarea după subiecte similare conform CZU |
629.785 (1) |
Tehnica mijloacelor de transport (134) |
SM ISO690:2012 КОЛЫЧЕВ, Алексей, РЕНЕВ, Максим, САВЕЛОВ, Виталий, АРХИПОВ, Павел. О влиянии термоэмиссионного охлаждения на КПД газотурбинной энергетической установки. In: Problemele Energeticii Regionale, 2020, nr. 4(48), pp. 45-57. ISSN 1857-0070. DOI: https://doi.org/10.5281/zenodo.4316996 |
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Problemele Energeticii Regionale | ||||||
Numărul 4(48) / 2020 / ISSN 1857-0070 | ||||||
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DOI:https://doi.org/10.5281/zenodo.4316996 | ||||||
CZU: 629.785 | ||||||
Pag. 45-57 | ||||||
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Rezumat | ||||||
The work is devoted to the problem of increasing efficiency of power gas turbine units (microturbines). One of ways to improve efficiency is to increase gas temperature in front of the turbine. Cooling of gas turbine elements is difficult. One of the solutions to the problem may be the method of thermal emission cooling. The purpose of this work is to estimate the potential effect of thermal emission cooling of turbine blades on efficiency. The mentioned aim is achieved by analyzing the main factors influencing the efficiency of the power gas turbine unit. Calculated estimations of thermal condition of turbine blades with thermo-emission cooling depending of electron work function and gas temperature in front of the turbine. The most significant results of the work are the obtaining of dependence of efficiency of power gas turbine unit on the value of electron work function (thermo emission cooling) and its surface temperature. Besides, as a result of numerical estimations it was established for the first time that the blade temperature of the turbine with thermal emission cooling can reach the value of about 1000 K at the electron work function 1 eV and at the gas temperature in front of the turbine 2700 K (by 7-8 % higher than modern power gas turbines). The obtained results can be applied in practice in terms of justification of thermal emission cooling application in gas turbines. The method of thermal emission cooling can be applied in micro turbines, large power turbines, aircraft engines. |
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Cuvinte-cheie thermal emission cooling, thermoelectronic emission, power gas turbine installations, efficiency, răcire termionică, emisie termionică, centrale electrice cu turbină cu gaz, randament, термоэмиссионное охлаждение, термоэлектронная эмиссия, энергетические газотурбинные установки, КПД |
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