Showing 131 - 140 of 523
In view of above present investigation is planned with the following.
Persistent link: https://www.econbiz.de/10010580710
In this work, the validity of the Onsager reciprocal relations (ORR) for the heat transfer and multi-component diffusion case in the presence of external forces is re-examined. It is shown that the ORR are necessarily fulfilled for this process even if the quasi-equilibrium postulate is applied....
Persistent link: https://www.econbiz.de/10010590571
In this paper, the effects of inlet temperature and rib height on the fluid flow and heat transfer performances of the ribbed channel inside the high temperature heat exchanger are presented. The inlet temperature varies from 850K to 1250K and the ratio of rib height to channel height varies...
Persistent link: https://www.econbiz.de/10010593975
Using a novel method that couples genetic algorithm (GA) with numerical simulation, the geometric configuration for a two-dimensional slotted fin has been optimized in this paper. The objective of optimization is to maximize the heat transfer capacity of slotted fin, and minimize the pressure...
Persistent link: https://www.econbiz.de/10010571905
In one tube pass and one shell pass counter-flow heat exchangers, when both streams change temperature by different amounts, the effectiveness is defined as the temperature change for the stream with lower capacity divided by the maximum possible change and the effectiveness depends on the...
Persistent link: https://www.econbiz.de/10010571944
In recent years, several intensive studies have been carried out in order to reduce the energy consumption of buildings. One solution lies on whole building energy simulation that permits to enable the heat (and moisture) transfer through the building envelope and, consequently, is a way to...
Persistent link: https://www.econbiz.de/10010571967
In this paper, 3-dimensional geometric models have been developed to evaluate the particle distribution effect on the thermal performance of a composite high conductivity laminated MEPCM board. For the purpose of comparison three geometric configurations (rectangular, triangular and pyramidal)...
Persistent link: https://www.econbiz.de/10010572099
The use of latent heat storage, microencapsulated phase change materials (MEPCMs), is one of the most efficient ways of storing thermal energy and it has received a growing attention in the past decade. However, there is no complete overview of its utilization in thermal energy storage systems,...
Persistent link: https://www.econbiz.de/10010573464
This paper discusses physical process of thermal transfer in energy pile foundations, which function as structural support for the buildings as well as heat exchangers serving energy to the buildings. Derivation of conservation of energy balance is presented, depends on its type of heat transfer...
Persistent link: https://www.econbiz.de/10010573494
(or exergy) that is most relevant. Accordingly, results are presented as loss coefficients which are defined as the …
Persistent link: https://www.econbiz.de/10010576229