Naslov
Influence of the ambient temperature change on steam pressure reduction valve exergy destruction and exergy efficiency

Autori
Mrzljak, Vedran ; Poljak, Igor ; Orović, Josip ; Prpić-Oršić, Jasna

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
INTERNATIONAL SCIENTIFIC CONFERENCE MACHINES. TECHNOLOGIES. MATERIALS 2019 - winter session - Volume 1 - PROCEEDINGS / Popov, Georgi ; Dikova, Tsanka - Sofija : Scientific technical union of mechanical engineering Industry - 4.0, 2019, 26-29

Skup
XVI International Scientific Congress: Machines. Technologies. Materials

Mjesto i datum
Borovec, Bugarska, 13.03.2019. - 16.03.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ambient temperature ; Steam pressure reduction valve ; Exergy destruction ; Exergy efficiency

Sažetak
The paper presents an exergy analysis of pressure reduction valve mounted in the steam propulsion system on conventional LNG carrier. From exploitation are obtained that the valve pressure and temperature decrease become as higher as steam system load increases. Valve exergy power input and output decreases during the increase in steam system load, mostly because of the steam mass flow decrease. Steam system load increase in exploitation also causes a decrease in valve exergy destruction with a simultaneous decrease in valve exergy efficiency (from 68.42 % to 68.09 %). The ambient temperature variation showed that the valve exergy destruction is the lowest for the lowest observed ambient temperature, in any steam system load. The exergy efficiency of the pressure reduction valve is reverse proportional to valve exergy destruction. An increase in the ambient temperature for 10 °C causes a decrease in analyzed valve exergy efficiency for between 2.5 % and 3 %.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Tehnologija prometa i transport

POVEZANOST RADA