Dissertation > Excellent graduate degree dissertation topics show

Three-Dimensional Numerical Simulation and Performance Analysis of Plate-Type Indirect Evaporative Cooler with Condensation and Dehumidify

Author: ZhangYiMin
Tutor: YuQingBo
School: Northeastern University
Course: Refrigeration and Cryogenic Engineering
Keywords: condensation dehumidification indirect evaporative cooling mathematicalmodel Coupled heat and mass transfer simulation performance analysis exergy analysis
CLC: TU831.4
Type: Master's thesis
Year: 2011
Downloads: 110
Quote: 0
Read: Download Dissertation

Abstract


Indirect evaporative cooler in plate heat exchanger is a evaporative cooling method, in which a secondary air cooling and the primary air condensation caused by evaporation of wa-ter are controlled in the two channels.This paper simplified the model of indirect evaporative cooler through the study on the heat and mass transfer features in the process of condensation dehumidification. Three-dimensional mathematical model is established through the CFD method. The three-dimensional mathematical model is divided into discrete grids by the pre-processor software Gambit. Through the first indirect evaporative cooler for cooling dehumidification air channel situation, this paper defines the boundaries of heat and mass transfer coupling, and compiled a user-defined procedures. The process of coupled heat and mass transfer is solved by Fluent in the state of parameters given. The results of numerical simulation are disposed by post-processing software origin in this paper. The first and second air channel pressure, veloc-ity, temperature and water vapor concentration distribution are acquired too in this paper. This paper also analyses the impact of external parameters on condensation dehumidification in indirect evaporative cooler.This paper analyses energy and useful energy conversion and losses in the process of condensation dehumidification in the indirect evaporative cooler. Through the features of benefit exergy and cost exergy, this paper defines the calculation expression of exergy effi-ciency. On the basic of the expression, through some basic thermodynamic indicators, such as heat transfer efficiency, exergy efficiency, improve the degree of thermodynamics, exergy loss rate, exergy loss coefficient of indirect evaporative cooling and dehumidification process en-ergy to useful energy use, losses are analyzed and studied. The results of simulation and the thermal performance analysis indicate that the structural parameters of the indirect evapora-tive cooler and inlet air cooling dehumidification parameters are caused when the effect of heat transfer, and that utilization of useful energy can be also changed. The analysis results can provide a theoretical basis for optimal design.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study of Interaction between Epoxy Molecules and Carbon Fiber Surface with Molecular Simulation,TB332
  3. Research on Mechanism Analysis and Modeling Simulation of Horizontal Well Tractor,P631.83
  4. Study on Springback of High-Strength Steel Stamping,TG386
  5. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  6. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  7. The Brake Performance of Hydraulic Retarder and Simualtion Research on Its Application for Aircraft Arrestment,TH137.331
  8. Satellite Attitude Determination Based on Gyro and Star Sensor,V448.2
  9. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  10. Research on Orbital Control Method for Space Rendezvous and Docking,V526
  11. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  12. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  13. Single Neuron PID Control for Electro-Hydraulic Servo Unit of Ship Rudder,U666.152
  14. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  15. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  16. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  17. Numerical Simulation of Biomass Direct Reburning,TK16
  18. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  19. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  20. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  21. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23

CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning > Air-conditioning machinery and equipment
© 2012 www.DissertationTopic.Net  Mobile