A novel model of mixed-particle coating for accurate performance quantifications at varying composition percentages

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number122833
Journal / PublicationInternational Journal of Heat and Mass Transfer
Volume191
Online published2 Apr 2022
Publication statusPublished - 1 Aug 2022

Abstract

Coatings applied on buildings are expected to perform well in both thermal and aesthetic aspects. Single-particle coatings can only perform satisfactorily in one of the two aspects, while mixed-particle coatings utilizing particles with complementary properties show substantial potentials to achieve desirable performance in both aspects. For accurate performance quantification of a mixed-particle coating at varying composition percentages, conventional experiment-based methods are time-consuming and costly, and thus numerical model-based methods are critically needed. However, existing models require the knowledge of the complex mixing conditions which is challenging/even impossible to acquire in practice, thereby deteriorating their accuracies and applicability. For this reason, this study proposes a novel model in which the performance of the mixed-particle coating is quantified on the basis of two double-layered coatings that can be easily and accurately modelled using existing techniques. The proposed model is experimentally validated using 15 coating samples. Compared with a typical conventional model, the proposed model substantially improves the accuracy of performance quantification at varying composition percentages. For instance, the accuracies of the thermal and aesthetic performance quantifications have been improved by 17.7% and 20.3%, respectively. Moreover, as the proposed model does not require the knowledge on the complex mixing conditions, it is easy and convenient to be implemented in practice. Such an accurate and easy-to-be-used model will help improve the design of mixed-particle coatings for achieving desirable aesthetic performance.

Research Area(s)

  • Building energy, Composition variation, Mixed-particle coating, Performance quantification, Thermal and aesthetic

Citation Format(s)

A novel model of mixed-particle coating for accurate performance quantifications at varying composition percentages. / Gao, Diance; Zhang, Sheng; Sun, Yongjun; Zhou, Chuanwen; Bu, Yu; Chai, Jiale.

In: International Journal of Heat and Mass Transfer, Vol. 191, 122833, 01.08.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review