Application of Entransy Dissipation Number as Performance Parameter for Heat Exchanger
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2014, Vol 12, Issue 6
Abstract
A new physical quantity, entransy has been identified as a basis for optimizing heat transfer processes in terms of the analogy between heat and electrical conduction. This quantity, which will be referred to as entransy, corresponds to the electric energy stored in a capacitor. The entransy is defined as one-half the product of heat capacity and temperature, the effect of entransy consumption rate on the irreversibility of heat transfer process, it can be found that entransy is a state variable, from which a new expression for the second law of thermodynamics is presented; Then by setting entransy consumption rate and power consumption rate as optimization objective and constraint condition for each other. In the heat exchanger, there mainly exist two kinds of irreversibility the first is heat conduction under finite temperature differences and the second is flow friction under finite pressure drops. Hence, rather working on any other aspect we can target to minimize the entransy dissipation number to increase the performance of a heat exchanger. This can be proved experimentally for water -water and oil-water heat exchangers.
Authors and Affiliations
Sushant Puranik , Govind Maheshwari
Keywords
Related Articles
- EP ID EP162975
- DOI -
- Views 108
- Downloads 0
Movement Evaluation of Mobility Models in Ad Hoc Networks
Mobility is a normal behavior of Ad Hoc networks. A realistic simulation of user movement in Ad Hoc Network is an important to the network act. The difficult movement pattern of nodes is important in the study of Ad hoc...
Arm 7 Based Robotic Arm Control By Electronic Gesture Recognition Unit Using Mems
Mechatronics is one of the present trends in the era of computing in today’s system automation industry and control. The proposed project is one such attempt of implementing an accelerometer based system to communi...
Fire Threat in Buildings
Fire accident in buildings is a threatening one now a day. The numbers of accidents are increasing in day by day. It creates heavy lives and property losses to the individuals and the nations. To find out the reasons, fr...
High Speed CMOS Comparator Design with 5mV Resolution
A high speed CMOS comparator with low power and high precision is proposed. The topology is very well capable of distinguishing DC voltage difference of around 5mV, which means a high precision circuit. The propo...
Impact of Aquacult ure on Physico-Chemical Characteristics of Water and Soils in the Coastal Tracts of East and West Godavari Districts,Andhra Pradesh, India
The Physico-chemical characteristics of water and soil in aquaculture areas were investigated. Water samples were analysed with respect to PH, Phosphates, Sulphates, Total Alkalinity, Total Hardness, Total Dissolved Soli...