Dissertation > Excellent graduate degree dissertation topics show

Indoor air quality of different ventilation mode multi-objective optimization

Author: ZhaoNaiNi
Tutor: QianFuPing
School: Anhui University of
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Ventilation mode Indoor Air Quality Numerical Simulation Multi-objective optimization Genetic Algorithms
CLC: TU834
Type: Master's thesis
Year: 2011
Downloads: 76
Quote: 0
Read: Download Dissertation

Abstract


As people's living standards improve and increase the time in the room, people on the indoor air quality of care and vigilance growing. In this paper, on the basis of previous numerical simulation techniques, based on the response surface methodology and the use of statistical software Minitab 15, studied the displacement ventilation and mixing ventilation air temperature two modes X 1, outlet location X 2 and the exhaust port position X 3 on indoor air quality evaluation (energy utilization factor η, air distribution performance index ADPI, the work area and the average age of air breathing plane τ particle concentration C) the impact of and evaluation were drawn four on three kinds of impact factor quadratic polynomial prediction model. In the prediction model, based on the application of genetic algorithms are two kinds of ventilation modes on the indoor air quality for multi-objective optimization. The results showed that: (1) for purposes of displacement ventilation, X 1 对 η, X 3 for ADPI, X 1 and X 1 2 on the τ and X 1 X 2 for C were significantly affected. And in the scope of this study, when the displacement ventilation supply air temperature is 23.0 ℃, outlet located at the south wall of 0.84m, the exhaust port is located on the top plate from the east wall of 0.18m, can provide better indoor air quality. (2) the hybrid ventilation purposes, X 1, X 2 and X 1 X 2 for η, X 1 , X 3 , X 2 2 , X 1 X 3 and X 2 X 3 for ADPI, X 1 2 , X 2 2 , X 3 2 and X 1 X 3 for C significantly affected. In addition, within the scope of this study, when mixing ventilation air temperature is 21.2 ℃, the Western Wall and the outlet is located at the south wall 3.2 2 m, the exhaust port is located at the south wall of the west wall 0.02m , can provide better indoor air quality. (3) two kinds of ventilation modes optimization options have their pros and cons, I suggest should be based on a specific person in the room on the environment requirements to select the appropriate ventilation mode: When the person in the room focused on thermal comfort and breathing clean air plane is recommended when Select the Optimization Plan; if the indoor staff focused on energy efficiency and staff activities of regional air freshness is recommended to select an optimal solution. (4) In this paper, multi-objective genetic algorithm for multi-objective optimization able to combine multiple targets, the worst case is also worsening a minimum target weights leaving the other goals component can be improved, to avoid a one-sided single-objective optimization defect Therefore, applying the optimal indoor air quality has an important significance.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  18. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  19. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649
  20. Development of the on-line Training and Examination System of Army,TP311.52
  21. Designs and Applications of Fuzzy Synthetic Evaluation Models Based on Parallel Algorithms,TP18

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