Dissertation > Excellent graduate degree dissertation topics show

The Energy-saving Transformation and Energy Consumption Analysis of a Central Air-conditioning System

Author: ShenShiPing
Tutor: LuJun
School: Chongqing University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: the central air conditioning energy-saving transformation breakdown measurement energy consumption analysis energy-saving diagnosis
CLC: TU831
Type: Master's thesis
Year: 2011
Downloads: 305
Quote: 0
Read: Download Dissertation

Abstract


Building energy consumption has become one of the three "major energy consumers" in our country’s energy consumption. Currently , building energy consumption accounts for about 30% of the total social energy consumption. There are the existing buildings of nearly 400 million square meters,of which 99% are high-energy consumption buildings,and more than 95% of the new buildings are in the same column as well. The areas of state organs of office buildings and large public constructions accounts for the town total construction area less than 4%,but the power consumption quantity is 22% of the total of urban consumption each year, and the power consumption per unit area is as high as 10 to 20 times of ordinary residential level. On the other hand, building energy consumption accounts for about 27.4% of total energy consumption in our society, while the air conditioning and heating energy consumption of buildings can always be about 50% to 70% of total energy consumption. Large public buildings have become increasingly prominent high-energy consumption, energy-saving type of construction work as the focus of the current building energy efficiency. As the prominent problems of high energy consumption of the large-scale public buildings,for this kind of buildings, the energy saving renovation work becomes the focus of the current building energy efficiency.In this paper,the main teaching building of Chongqing University was taken as the research object,first of all,According to the problem of "big flow, small temperature difference" appeared in the process of operation, the original air conditioning system was energy-efficiency tested,and the diagnosis analysis and transformation measures related were raised, which lay the foundation for the energy saving transformation of air conditioning system in the next. In allusion to the energy saving transformation of the main teaching building, the technologies of electric quantity breakdown and cold quantity measurements are introduced to key research the construction of the energy-consumption monitoring system. Further, based on the project pricing requirements, the cold quantity pricing scheme of the main teaching building is designed and verified.Based on the overall energy consumption analysis model and of method, total building energy consumption is analyzed year after year and month after month. The energy consumption characteristics are put forward and the causes are analyzed. Then, on the research and analysis of respective energy consumption of refrigeration season and typical air conditioning month and the respective energy consumption of air conditioning system day by day, the energy consumption indicators and characteristics are concluded.Building up energy-saving diagnosis analysis method which based on the partial measurement of air conditioning, based on the central air conditioning system operation and energy consumption monitoring data of the main teaching building, system operation condition quantitative diagnosis indexes are analyzed. Chilled water and cooling water temperature differences, water chillers load rate, operation performance coefficient COP and water system transmission coefficient are Researched and analyzed to evaluate of the air conditioning system operating conditions. The influence of different load rate to COP is researched. Typical day of air conditioning water chillers under a high load rate is chosen for hourly monitoring analysis on the central air conditioning system operation condition.Finally, through the contrast and analysis of the testing for the air conditioning system of energy efficiency before and after the reconstruction, the proportion changes of respective operation equipment of the total energy consumption are being compared to evaluate the energy-saving transformation effects.

Related Dissertations

  1. Coal Mine Production System Analysis Method of Energy Consumption,F426.21
  2. On the Hardware Design of Remote Maintenance System of Central Air Conditioning,TB657.2
  3. Design and implementation of the management system of the central air-conditioning energy saving,TP311.52
  4. Buildings Energy Efficiency Analysis System Based on Thermal Parameters Measurement and On-line Reconstruction,TU111.195
  5. Heat transfer model based on the energy efficiency of central air conditioning system integrated optimization,TU831.3
  6. The Research and Application of Fuzzy Control in HVAC and Room System,TB657.2
  7. VRV central air-conditioning controller Research,TP273
  8. Marketing Strategy Research on Ji Rong Brand Central Air-conditioning,F426.6
  9. A Study of Physical, Chemical and Biological Behavior of Dust in Central Air-conditioning System,X513
  10. Computer-aided Design of Home Central Air-Conditioning System,TP391.72
  11. Some Applications of CFD in the Engineering,O35
  12. Thermal power plant unit energy consumption analysis system R \u0026 D,TM621
  13. Research on Xinyuan Building Central Air Conditioning System Energy Consumption and Water System Energy-saving,TU831
  14. The Energy Consumption Analysis for the Cogeneration Based Heating Supply System of the Existing Buildings,TU832.1
  15. Energy-saving Diagnosis of Ground Water-source Heat Pump System Based on Artificially Neural Network,TU831.3
  16. Software Development of Energy Consumption Analysis of Oil Gathering and Transportation System and Integrated Optimizing Design,TE832
  17. Simulation of Annual Energy Consumption about Variable Refrigerant Volume Systems,TU831.4
  18. Energy Consumption and Environmental Load Analysis for SKS Lead Smelting System,TF812
  19. Analysis on Energy Consumption of Desulfurization System in Coal-fired Power Plant,X701.3
  20. The Regional Applicability and Energy Efficiency Analysis Research for the Metro Environmental Control System,U231.5
  21. Energy Efficiency Inspection, Analysis and Retrofitting Study for Existing Public Buildings,TU201.5

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