An innovative method to determine optimum insulation thickness based on non-uniform adaptive moving grid

Suelen Gasparin, Julien Berger, Denys Dutykh, Nathan Mendes

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

It is well known that thermal insulation is a leading strategy for reducing energy consumption associated with heating or cooling processes in buildings. Nevertheless, building insulation can generate high expenditures so that the selection of an optimum insulation thickness requires a detailed energy simulation as well as an economic analysis. In this way, the present study proposes an innovative non-uniform adaptive method to determine the optimal insulation thickness of external walls. First, the method is compared with a reference solution to properly understand the features of the method, which can provide high accuracy with less spatial nodes. Then, the adaptive method is used to simulate the transient heat conduction through the building envelope of buildings located in Brazil, where there is a large potential of energy reduction. Simulations have been efficiently carried out for different wall and roof configurations, showing that the innovative method efficiently provides a gain of 25% on the computer run-time.

Original languageBritish English
Article number173
JournalJournal of the Brazilian Society of Mechanical Sciences and Engineering
Volume41
Issue number4
DOIs
StatePublished - 1 Apr 2019

Keywords

  • Adaptive numerical methods
  • Moving grid method
  • Numerical simulation
  • Optimum insulation thickness
  • Redistribution schemes
  • Thermal insulation

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