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Design of diffuser (reducing stage assembly) for superheater and reheater start up vent silencer in super critical once through boilers
Department of Mechanical Engineering, PRIST University, Vallam Thanjavur, Tamilnadu, India.
Research Article
International Journal of Science and Research Archive, 2023, 08(01), 615–624.
Article DOI: 10.30574/ijsra.2023.8.1.0108
Publication history:
Received on 19 December 2022; revised on 31 January 2023; accepted on 02 February 2023
Abstract:
In supercritical boiler Startup Vent diffuser is to manage the instant release of huge amounts high pressure of steam to low pressure into atmosphere while cutting of the noise produced while venting the steam in different temperature and pressure conditions. The upstream pressure of startup vent is around 81 kg/sq.cm. so for reducing pressure from 81 kg/cm2 to 3kg/cm2 with constant flow one diffusers (reducing stage assy.) will introduce which will diffuse the pressure. Startup Vent diffuser is a design a reducing stage assembly (called a multistage diffuser) along with study of hydrodynamic parameter like Beta ratio, Mach number, and numerical calculation of orifice plate thickness, size of orifice hole & Bending stress evaluation, reducer etc.
Keywords:
Reducing stage assy; Beta ratio; Mach number; Orifice plate; Startup vent
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Copyright © 2023 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
