Showing papers in "Case Studies in Thermal Engineering in 2019"

TL;DR: In this article, the effects of stretching parameters and Reynolds number on the concentration, temperature, axial, radial and tangential velocities are studied and it is shown that with increment of the values of stretching rate of lower disk, the radial and axial velocity enhances near the lower disk.

TL;DR: In this article, the impact of parameters and numbers in the problem on velocity, temperature and concentration profiles was investigated, and it was shown that the temperature profile has shown a dual behavior in terms of changes Nt and pr.

TL;DR: In this article, the entropy generation of nanofluids between two stretching rotating discs under the effect of magnetohydrodynamic (MHD) and thermal radiation is examined in the presence of carbon nanotubes.

TL;DR: In this paper, phase change materials (PCM) contained in metallic finned tubes were used to increase energy storage and heat transfer rate of double pass solar air heater (DPSAH).

TL;DR: In this article, an optimal design and performance analysis of a renewable energy system to serve the cruise ship main and auxiliary power in Stockholm, Sweden is presented, where the goal is to integrate renewable energy systems in small and large ships for greener and sustainable marine transport.

TL;DR: In this paper, the impact of Brownian motion on the thermal conductivity of nanofluid is studied numerically using Control Volume Finite Element Method (CVFEM).

TL;DR: In this paper, the performance, energy loss, and degradation of a 200 kW roof-integrated crystalline photovoltaic (PV) system installed at IRB Complex-5, Chandigarh in the Northern part of India was predicted.

TL;DR: In this paper, water was used as a base fluid and nano-silicon carbide as an additive to improve the thermal conductivity of the resulted nanofluid and its thermophysical properties were studied using five surfactants.

TL;DR: In this article, the authors studied the recent trends in cold-start emissive behavior with the impact of changes in ambient temperature over the advance technology GDI and PFI vehicles and found that ambient temperature had a significant influence on cold start emissions especially when the combustion temperature was lower and when the air/fuel mixture was very rich at very low temperature conditions.

TL;DR: In this article, a numerical simulation of magnetohydrodynamic free convection and heat transfer of nanofluids flow inside wavy enclosures filled with a heat generating porous medium has been carried out.

TL;DR: In this article, the effect of using multi-walled carbon nanotubes in a thermosiphon and forced-circulation flat-plate solar collector was investigated experimentally.

TL;DR: In this article, the authors presented the design of a grid-connected water-based PV/T and performance evaluation from outdoor experiments in weather conditions of Oman, focusing on the electrical performance of the system under three days of testing and draws conclusions onto the effect of ambient conditions and solar irradiance on conventional PV panels and PV/Ts collectors.

TL;DR: In this article, the authors presented the performance of solar photovoltaic modules provided with cooling in terms of its normalized power output, performance ratio, and module efficiency, and showed that the module being cooled showed 7.2% and 6% higher electrical efficiency and performance ratio respectively compared to the module without cooling.

TL;DR: In this article, the microstructure and inertial characteristics of a magnetite ferrofluid over a stretching sheet utilizing effective thermal conductivity model are studied through two semi-analytical methods which are homotopy perturbation method (HPM) and Akbari-Ganji's method (AGM).

TL;DR: In this article, the analytical approach of a second grade fluid flow along a stretching cylinder and the Soret and Dufour effects is also investigated on the problem of thermal radiation.

TL;DR: In this article, the impact of thermophoresis and Brownian motion has been considered in the model of nanofluid and the Akbari-Ganji's method has been selected for solving governing equations.

TL;DR: In this article, the performance of photovoltaics (PV) for building applications in two configurations: building applied PV-BAPV and building integrated PV-BIPV was analyzed.

TL;DR: In this article, a mathematical model is developed to examine the heat transmission performance of electrically conducting MHD flow of a Casson ferrofluid over a stretching sheet, and the formulated model has been solved with homotopy analysis method (HAM).

TL;DR: In this article, differences in the thermo-physical properties of three types of nanofluids were emphasized, which used nano-SiC as additive and cetyl-trichromyl ammonium bromide as surfactant.

TL;DR: In this article, the physical aspects of the steady laminar boundary layer flow of CNTs/(C2H6O2-H2O) hybrid base nanofluid over a porous stretching cylinder under impact of magnetic force has been explored using 4th order Runge-kutta (RKF 4) numerical method.

TL;DR: In this article, a novel solar powered air-conditioning system that operates under UAE climate conditions is presented, which uses passive techniques such as roofing reflective material, trees, double-glazed windows, and overhang to reduce the space cooling load.

TL;DR: In this paper, a direct evaporative pad cooling system to be used for a poultry house is simulated under the climate conditions of six Moroccan cities, and the objective is to optimize the parameters affecting the performance of the system for each city.

TL;DR: In this article, thermal analysis evaluation for a membrane distillation (MD) system is experimentally calculated, where variable feed flow rates and feed temperatures are investigated by calculating the thermal efficiency, gained output ratio and specific energy consumption.

TL;DR: In this article, a college building in Chengdu is selected to analyze the effect of material type and thickness of thermal insulation layer of the exterior wall on building energy consumption by using DeST energy simulation software, and through the life cycle cost analysis model to study the economic thickness value and unit cost of different insulation materials.

TL;DR: In this paper, the effect of carbon black (CB) filler composition on natural rubber compounds on thermal properties, morphology, diffraction patterns, and functional groups was determined. And the results showed that there is no significant difference between compound with filler and without filler.

TL;DR: In this paper, a comparison study of PV/T energy data prediction systems using different ANNs techniques using different evaluation factors such as MSE, MAPE, R2, RSME, MBE, and MPE is presented.

TL;DR: In this article, an economic comparison between a vapor compression refrigeration system powered by photovoltaic array and a vapor absorption refrigeration systems powered by a solar evacuated tubes thermal unit was conducted based on life cycle cost analysis that included the total cost of purchase and operation over their entire service life.

TL;DR: In this paper, the latest ideas dealing with building performances and net-zero building design projects, are reviewed and an outlook is given including new concepts of combined systems in hot and humid climate regions.

TL;DR: In this article, the authors used the finite volume method and SIMPLE algorithm for enhancing heat transfer by utilizing hybrid nanofluid, which is a new class of heat transfer enhancement, and the results indicated that the hybrid nanoparticles of AlN - Al2O3 suspended in water as a base fluid tends to enhance heat transfer significantly.

TL;DR: In this paper, the first and second law analyses of a 20kWeR245fa organic Rankine cycle with low grade temperature heat sources were numerically studied and the results revealed that the combined hot water/saturated steam heat source provided the highest second law or exergy efficiency due to less irreversibility generated at the evaporator.