Heat exchangers for high temperature working conditions: numerical study and experimental validation

• Grant number: 11/17657-7
• Support Opportunities: Regular Research Grants
• Start date: December 01, 2011
• End date: May 31, 2014
• Field of knowledge: Engineering - Mechanical Engineering - Thermal Engineering
• Principal Investigator: Paulo Eduardo Batista de Mello
• Grantee: Paulo Eduardo Batista de Mello
• Host Institution: Centro Universitário FEI (UNIFEI). Campus de São Bernardo do Campo. São Bernardo do Campo , SP, Brazil
• Associated researchers: Fernando dos Santos Ortega ; Gustavo Henrique Bolognesi Donato

Abstract

There is a potential demand for heat exchangers capable of supporting working temperatures well above 900°C for long periods of time. Many different studies in the literature consider these components as critical for the implementation of externally fired gas turbines (EFGT) and externally fired combined cycles (EFCC). It is common sense that ceramics are the best alternative for the construction of these heat exchangers, but most part of the literature about heat exchangers usually considers only metallic materials for its construction. Consequently, the design of ceramic heat exchangers is not trivial and represents an actual technological challenge. In addition, different heat transfer modes are present simultaneously and structural integrity considerations also become highly important due to the thermal stresses originated from high temperature gradients combined to the brittle fracture behavior of engineering ceramics. The objective of the present work is to validate a simulation methodology that could be used in the design of ceramic heat exchangers. The validation will be conducted comparing the numerical results with experiments in a prototype of the heat exchanger. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BATISTA DE MELLO, PAULO EDUARDO; SANTOMO VILLANUEVA, HELIO HENRIQUE; SCUOTTO, SERGIO; BOLOGNESI DONATO, GUSTAVO HENRIQUE; ORTEGA, FERNANDO DOS SANTOS. Heat transfer, pressure drop and structural analysis of a finned plate ceramic heat exchanger. ENERGY, v. 120, p. 597-607, FEB 1 2017. (11/17657-7)