Showing papers in "Case Studies in Thermal Engineering in 2016"

TL;DR: In this article, the authors have explained the synthesis of magnetic nanodiamond-cobalt oxide (ND-Co 3 O 4 ) nanocomposite material; preparation of nanofluids and estimation of thermal properties such as thermal conductivity and viscosity has been explained experimentally.

TL;DR: In this paper, a SiO 2 /water nanofluid with a mass fraction of 1% was employed as a coolant, and its effect on the performance of a symmetric, square flat-plate solar collector was experimentally investigated.

TL;DR: In this paper, an experimental work on heat transfer enhancement in a round tube by insertion of double twisted tapes in common with 30° V-shaped ribs has been conducted and the experimental results reveal that the heat transfer and pressure drop in terms of the respective Nusselt number and friction factor for the V-ribbed twisted tapes show the increasing trend with the rise of Re and BR.

TL;DR: In this article, the authors validate the experimental work carried out in the winter of 2015 on the concentrator in the city of Algerian city "Blida" by a numerical simulation, where the tap water used as a heat carrier fluid.

TL;DR: In this paper, the performance of a one-stage water/lithium-bromide absorption chiller driven by a parabolic trough collector coupled with a storage tank is evaluated.

TL;DR: In this article, a comparative thermodynamic and economic analysis of two kinds of organic Rankine cycles with pure and zeotropic mixtures for recovering waste heat from the exhaust gases of large diesel engines used in the offshore platforms of phase 12 of South Pars Gas on Persian Gulf is presented.

TL;DR: In this article, a new approach is presented into the optimal control of batch cooling crystallizers through a genetic algorithm, where the population balance is formularized for a typical batch crystallizer and objective functions considered here are related to quality of products at the end of the batch.

TL;DR: In this article, a flat-plate type solar collector with a dimension of 0.5m×0.5mm was used to heat a generator filled with 100% activated alumina and 75% activated carbon.

TL;DR: In this article, the effects of three methyl esters on engine performance and exhaust emissions were examined at different engine speed and full load condition, and it was concluded from the experimental investigations that biodiesel from different non-edible oils (Oleander, Kusum, and Bitter Groundnut) can become an alternative source of fuel.

TL;DR: In this article, an experimental analysis of the heat transfer behavior and optimum relative width parameter of the solar air channel of aspect ratio of 10.0 with 60° angled broken multiple V-type baffles was conducted.

TL;DR: In this paper, the performance and characteristics of a natural vacuum desalination system using low grade heat source is studied numerically and experimentally, and a program to solve the governing equations in forward time step marching technique is developed.

TL;DR: In this article, the energy, exergy and power generation of building integrated semitransparent photovoltaic (BISPV) modules for roof and facade has been evaluated.

TL;DR: In this article, the authors investigated application of alumina nanofluid to enhance the efficiency of heat exchangers while reducing energy consumption and overall cost, and the results showed that over 185% increase in tube side heat transfer coefficient allows reduction in heat exchanger length and flow velocity and thereby reduction of pressure drop up to 94%.

TL;DR: In this article, a method for thermal characterization of walls based on complex Fourier analysis is proposed to determine the thermal capacitance (defined as the product of density and specific capacity) and the thermal conductivity for a building wall using the monitored inner/outer surface temperatures and outer heat flux.

TL;DR: In this article, thermal and momentum transports in two different heat exchangers are simulated by means of a steady-state, 3D turbulent flow kk-ee model with a heat conduction module under various flow rates.

TL;DR: In this article, an experimental platform has been developed combining an internal combustion gas engine (cogenerator), a refrigerating adsorption machine, thermal solar collectors and wooden construction split in two compartment, a cold one conditioned by cooling ceilings and a hot one conditioning by heating floors.

TL;DR: In this paper, a total of 14 types of dimpled surfaces of external flow were studied and the effect of dimple pitch was examined, and the results showed that the maximum Nusselt number for dimples surfaces are about 25% better than smooth surfaces.

TL;DR: In this article, a prototype is implemented and a parametric analysis is carried out to test the effect of temperatures and mass flow rates on the performance of the heat recovery system, which is performed under typical conditions simulating the HVAC operation in cold climates.

TL;DR: In this article, a solar air heater roughened with 20° angled rib is simulated using an algorithm developed in MATLAB to predict the optimal set of design and operating parameters.

TL;DR: In this article, a genetic algorithm code was developed using MATLAB software to calculate and optimize work, ex-ergy, exergy efficiency and thermodynamic irreversibility of a high temperature proton exchange membrane fuel cell.

TL;DR: In this paper, the authors theoretically and experimentally studied the performance of the cross flow dehumidifier, which has been less studied than the counter flow dehodorizer, although it is more applicable in practice.

TL;DR: In this article, the steady state thermal analysis of diesel engine piston with ceramic coating having holes on its surface is investigated by using finite element-based software called Ansys, where Yttria-stabilized Zirconia is used as ceramic coating applied on Al-Si piston crown.

TL;DR: In this paper, a study on the performance of clothes drying cabinet by utilizing waste heat from a split-type residential air-conditioner (RAC) has been carried out.

TL;DR: In this paper, the effects of the air flow rate on the resistance characteristic and the heat transfer performance were analyzed using the FLUENT software by adopting the porous medium approach, which could obtain the distributions, including temperature, pressure and non-uniform, etc.

TL;DR: In this article, a square channel with discrete combined baffles (DCB), which combined V-baffle and V-orifice, is investigated numerically, and the results are reported in terms of flow visualizations, heat transfer characteristics, performance assessments.

TL;DR: In this article, the role of natural convection on solid-liquid interface motion during constrained melting within a horizontal cylindrical capsule was investigated, and a numerical code was developed using an unstructured finite-volume method and an enthalpy porosity technique.

TL;DR: In this article, a two-dimensional numerical simulations have been performed to study natural convection in circular enclosures filled with water considering different central angles, and a correlation for heat transfer rate is developed considering the effect of the angle between two sides of the cavity and Ra number using simulation results.

TL;DR: In this article, the authors used Adaptive Neuro-Fuzzy Inference System (ANFIS) to estimate hydrodynamics and heat transfer in a heated tube.

TL;DR: In this article, a two-dimensional numerical model is developed to study the thermal performance of a packed sphere heat pipe utilizing nanofluids due to the recent development of nanophilic and porous media structures.

TL;DR: In this article, the authors developed a computer simulation program to evaluate the performance of solar-assited combined ejector absorption cooling system using LiBr/H 2 O as a working fluid and operating under steady-state conditions.