Purpose – The purpose of this paper is to ascertain overall system health and maintenance needs with degree of certainty using condition‐monitoring data with hierarchical fuzzy inference system. Design/methodology/approach – In process plants, equipment condition is ascertained using...

Purpose – This paper aims to prioritize preventive maintenance actions on process equipment by evaluating the risk associated with failure modes using predictive maintenance data instead of maintenance history alone. Design/methodology/approach – In process plants, maintenance task...

Two-phase flow of pure chlorofluorocarbon (CFC) refrigerants in solar collector tubes has been examined in previous studies in connection with applications in direct-expansion, solar-assisted heat pumps (DX-SAHP). The present work extends the thermodynamic analysis of solar collectors to the...

Laminar natural convective motion in a channel formed by differentially heated vertical plates is analyzed. The proposed model combines the momentum-integral equation with the Oseen approximation for convective terms in the energy equation to predict the volumetric flow rate as a function of...

The natural convection heat transfer and ventilation characteristics of heated and vented parallel wall channels have been studied numerically. The flow is assumed to be laminar and steady, and the governing two-dimensional Navier-Stokes equations are solved by a finite volume formulation to...