Thermal Science 

About: Thermal Science is an academic journal published by Vinča Institute of Nuclear Sciences. The journal publishes majorly in the area(s): Heat transfer & Combustion. It has an ISSN identifier of 0354-9836. It is also open access. Over the lifetime, 4973 publications have been published receiving 40495 citations.

New Fractional Derivatives with Nonlocal and Non-Singular Kernel: Theory and Application to Heat Transfer Model

Abstract: In this manuscript we proposed a new fractional derivative with non-local and no-singular kernel. We presented some useful properties of the new derivative and applied it to solve the fractional heat transfer model.

Biomass fast pyrolysis

Abstract: Bioenergy is now accepted as having the potential to provide the major part of the projected renewable energy provisions of the future. Fast pyrolysis is one of the three main thermal routes, with gasification and combustion, to providing a useful and valuable biofuel. It is one of the most recent renewable energy processes to have been introduced and offers the advantages of a liquid product bio-oil that can be readily stored and trans ported, and used as a fuel, an energy carrier and a source of chemicals. Fast pyrolysis has now achieved commercial success for production of some chemicals, liquid fuel and electricity. Bio-oils have been success fully tested in engines turbines and boilers, and have been upgraded to high quality hydrocarbon fuels although at a presently unacceptable energetic and financial cost. This review concentrates on the technology of pyrolysis and applications for the liquid product. The basic pyrolysis process and the characteristics of the main liquid product bio-oil are first summarized followed by a review of applications for bio-oil. The main technical and non-technical barriers to implementation are identified.

Fractal heat conduction problem solved by local fractional variation iteration method

Abstract: This paper points out a novel local fractional variational iteration method for processing the local fractional heat conduction equation arising in fractal heat transfer.

Investigation of air conditioning temperature variation by modifying the structure of passenger car using computational fluid dynamics

Abstract: Air conditioning system is used for various application, in passenger car it gives comfort to the passenger. Now a days huge advancement have been included in the air conditioning system, especially automatic air conditioning system plays a vital role in passenger car. These air conditioning systems are performing well and have the capability of maintaining the temperature for long time with energy consumption. However, in some vehicle the performance of these air conditioning system is not achieved, while some vehicle achieved better performance. In later study it is found that, the structure of vehicle body also influence the performance of air conditioning system. In some structure the air conditioning air-flow a long distance in short time and have the capability to enhance the air conditioning performance. It is also found that the air conditioning performance can be improved by the structure of vehicle body. In this paper, we considered an Indian small budget car. The structure of the car is slightly modified and replaced the position of the air conditioning outlet. Then the residual temperature inside the car is analyzed with and without air conditioning. Here the CFD is used to analysis the temperature inside car at various position.

Transient heat diffusion with a non-singular fading memory: From the Cattaneo constitutive equation with Jeffrey’s Kernel to the Caputo-Fabrizio time-fractional derivative

Abstract: Starting from the Cattaneo constitutive relation with a Jeffrey’s kernel the derivation of a transient heat diffusion equation with relaxation term expressed through the Caputo-Fabrizio time fractional derivative has been developed. This approach allows seeing the physical background of the newly defined Caputo-Fabrizio time fractional derivative and demonstrates how other constitutive equations could be modified with non-singular fading memories.