Dissertation > Excellent graduate degree dissertation topics show

The Study of GWHP Numerical Simulation on Plain Area of Beijing City

Author: WangHaiLong
Tutor: ShaoJingLi
School: Chinese Geology University (Beijing)
Course: Groundwater Science and Engineering
Keywords: GWHP numerical simulation distance between pumping and injecting wells heat breakthrough
CLC: P641.2
Type: Master's thesis
Year: 2009
Downloads: 352
Quote: 5
Read: Download Dissertation

Abstract


Groundwater source heat pump (GWHP) air-conditioning technology, as a green, efficient, low costs and sustainable use of new technologies, has been widely used in the recent years. The dissertation set up the confined, unconfined groundwater flow and heat transport coupled models by FEFLOW5.4, a finite element simulation software, for GWHP appropriate areas in the plain area of Beijing. Study on the relationship of hydro-geological parameters, structural parameters of wells, pumping and injecting volume, injecting water temperature and natural groundwater flow with the aquifer geothermal distribution.Unconfined aquifer simulation results show that: consider the heat exchange between the atmosphere and aquifer could better characterize the vertical temperature distribution; consider the recharge of atmosphere, in the cooling period of GWHP, the temperature distribution has a rise trend according to water table; due to the high activity of natural groundwater flow in unconfined aquifer area, the shape of temperature distribution was elliptical, but the existence of natural groundwater flow can improve system efficiency. Confined aquifer simulation results show that: the distribution of temperature field in the aquifer system is mainly affected by pumping and injecting capacity and the temperature of injecting water, the shape of temperature field as a circle surrounding injecting well ; increased pumping and injecting capacity and reduce the distance between the pumping and injecting wells would result in pumping well’s temperature variation increases; "little temperature difference, big flow" system has a bigger temperature field radius than "big temperature difference, small flow" system; when the pumping well and injecting well in different layers, the temperature of pumping well has less affected.Based on the simulation of unconfined and confined aquifer GWHP system in distance between pumping and injecting wells and the impact radius of temperature field, and compared with the experience formula of the impact radius, the reasonably distance between pumping and injecting wells of GWHP systems and impact radius of temperature field can be determinate. Further, the reserve of shallow geothermal resources in Beijing plaint area within the depth of 100m was 4.47×1010kw, under the condition of extracting 5℃energy and the system running for 120 days respectively in winter or summer.

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. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13
  21. Numerical Simulation and Experimental Study of Air-Assisted Sprayer of Orchard,S491

CLC: > Astronomy,Earth Sciences > Geology > Hydrogeology and Engineering Geology > Hydrogeology (groundwater hydrology ) > Groundwater Dynamics
© 2012 www.DissertationTopic.Net  Mobile