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Optimal behavior of hot water heating coils at steady conditions

Mahboubi, D ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2008-68455
  3. Publisher: 2009
  4. Abstract:
  5. Hot water heating coils are key components in air conditioning systems undergo heat transfer. The most widely used exchangers (coils) take the form of fin and tube configuration in association with the application of air conditioning systems. In this research, thermodynamic modeling and mathematical optimization of hot water heating coils at steady conditions, approaching minimum energy consumption are achieved. The modeling procedure for heating coils is done based on the log mean temperature difference (LMTD) method. The objective function for optimization is pressure drop of air crossing coil per heating load of the system. This unction comprises all thermal and geometrical parameters of the coils such as coil surface area, number of rows, fin spacing and air side pressure drop of the coil. The objective function is minimized using Lagrange multipliers method. The optimization results are composed of minimum pressure drop, optimum surface area, optimum number of rows and fin spacing. The effects of varying the heating load, fin efficiency and the surface area of the coils on optimum behavior of them are investigated as well. Copyright © 2008 by ASME
  6. Keywords:
  7. Air sides ; Airconditioning systems ; Fin efficiency ; Fin spacing ; Geometrical parameters ; Heating coils ; Heating load ; Hot water ; Key component ; Lagrange multipliers method ; Log-mean temperature differences ; Mathematical optimizations ; Minimum energy ; Minimum pressure ; Modeling procedure ; Objective functions ; Optimum number ; Steady conditions ; Surface area ; Thermodynamic modeling ; Air conditioning ; Fins (heat exchange) ; Heating equipment ; Hot water heating ; Lagrange multipliers ; Mechanical engineering ; Pressure drop ; Thermal logging ; Water ; Optimization
  8. Source: 2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008, Boston, MA, 31 October 2008 through 6 November 2008 ; Volume 10, Issue PART B , 2009 , Pages 1427-1432 ; 9780791848715 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2008/48715/1427/332133