Title :
Models for Entropy Analysis of Single-Phase Heated Surface under Transient Condition and Analysis on Its Contrast with That of Steady Condition
Author :
Guo Xi-yan ; Fu Peng ; Yang Yong-ping ; Li Ai-juan
Author_Institution :
Sch. of Energy Power & Mech. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
The aim is to describe the irreversibility of energy system under transient conditions scientifically and analyze the further dynamic reasons. Models for entropy distribution under transient conditions are established and applied to reheater of a 1913t/h-boiler. The results show that some error occurs when model for steady conditions are used for transient conditions. The main reason is that the heat stored in metal and the time rate of entropy are ignored.
Keywords :
boilers; entropy; thermal energy storage; transient analysis; 1913t-h-boiler; contrast analysis; entropy analysis model; heat storage; single-phase heated surface; steady condition; transient condition; Entropy; Fluids; Heat transfer; Heating; Metals; Production; Transient analysis;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0545-8
DOI :
10.1109/APPEEC.2012.6307062
