Dissertation > Excellent graduate degree dissertation topics show

Study on Properties of Black Liquid Store Type Solar Collector System

Author: ZhangLi
Tutor: KeXiuFang
School: Guangdong University of Technology
Course: Thermal Power Engineering
Keywords: Phase change material Black liquor Solar collectors Thermal performance
CLC: TK512
Type: Master's thesis
Year: 2011
Downloads: 97
Quote: 0
Read: Download Dissertation

Abstract


The thermal performance of solar collectors evaluation by its average daily efficiency, non-steady-state efficiency and overall performance of the insulation. To improve the performance of the collector's collector, maximize the absorption of solar radiation at the same time should be maintained to minimize heat loss. On the basis of direct absorption the black liquor solar collectors on their concept to increase the energy storage device. Although China has abundant solar energy resources, solar radiation reaches the Earth's surface, the energy density is not high, and by the location, day and night and the seasons changed regularly, and overcast, sunny, clouds, rain and other random factors. Exists due to the transport of solar energy on the earth timing, in order to meet the production and living with a continuous, stable supply of energy needs, which will need to solar energy with the appropriate way store, and then to remove it at the appropriate time using. Solar collectors for the widespread inadequacies of the collector efficiency is not high, the tank volume is too large, the research innovation proposed to add a phase change material in a suitable way to improve system chattering efficiency the black liquor solar water heater tank. Experiment-based research appropriate to include appropriate melting point in the the black liquor solar water heater thermal storage tank, better cycle performance of phase change materials and analyze the overall performance of the energy storage the black liquor solar collector. Study ways and means to improve the phase-change thermal performance; encapsulation method of the study of energy storage materials (hereinafter referred to study the black liquor solar collectors through the water to take the heat and the temperature rises in the structure of the the black liquor solar collectors; temperature rise) law; temperature rise of the non-coated all-glass solar vacuum tube black liquor, flow patterns, and black liquor tank the temperature stratification regularity. The experimental results are consistent with the expected results and that add feasibility phase change material thermal storage device. Storage the black liquor solar collector through the water to take the heat when the heat transfer laws and the data of the temperature variation of the black liquor tank, spiral copper tube heat exchanger curve by the study can be drawn from the total of spiral copper tube The heat transfer coefficient can be maintained throughout the heat exchange process is stable; black liquor tank entire collector during the work in the daytime, the temperature black liquor in the bottom of the box than the middle and upper housing of the black liquor temperature is much lower, while the central and upper portion of the black liquor, the temperature is substantially the same, the maximum temperature difference between the bottom and in the upper part of the black liquor temperature approximately 10 ° C and the phase change material with the temperature rise of the black liquor increase. When in the evening, the temperature of the black liquor tank self-regulation uniform, phase-change material solidifies exothermic the black liquor box overall decline in temperature decreased less than the black liquor boxes plus energy storage device; higher water temperature and duration longer; study the the black liquor solar collector performance parameters and instantaneous efficiency maps. Energy storage in the black liquor solar collector collector working fluid and the thermal storage device phase-change materials have wide range of sources, low-cost and effective solution to the health problems of the conventional vacuum tube solar collector and high-efficiency energy storage problem; using phase change energy storage device to solve the problem of the solar water heater rainy days, the water temperature is low and unstable. Reduce the need to use electricity to heat the water, in line with national and provincial energy conservation policies and guidelines

Related Dissertations

  1. Investigation of SnTe-Ge2 Sb 2 Te5 and Bi2 Te3 Based Phase-change Materials for Applications of Phase Change Memory,TP333
  2. CNC lathe spindle thermal characterization,TG519.1
  3. Thermal Performance Modeling of Power Plant Boiler System and the Application of Optimization of Coal Blending,TK227
  4. Analysis in Approach for Heating of Zero-energy Consumption Buildings in Winter and Assessment on Their Engineering Application,TU832
  5. Based on direct absorption nanofluids performance of solar collector system,TB383.1
  6. The Relevancy Research on Electrospun Polyacrylonitrile Copolymer Nanofibers,TQ340.6
  7. Controllable Preparation and Properties of Polyacrylonitrile Copolymer for Carbon Fiber Precursor,TQ340.6
  8. Investigation into the Fever of the Local Folklore Song and Dance,J705
  9. Study on the Polycondensation and Spinning Process of Poly(P-Phenyleneterephthalamide) Copolymer,TQ340.6
  10. The Research on Characteristics of Heat Transfer in Evacuated Solar Collector Tube,TK124
  11. Solar heat pump radiant floor heating system characteristics and Optimization,TU832.16
  12. Application and Study on the Hybrid System of Ground Source Heat Pump and Solar Energy in the Office Buildings,TU831.3
  13. Solar Energy-Water Source Heat Pump Heating System of Auxiliary,TU832
  14. Dynamic Experiment Research on the ASHP Energy Storage Hot Gas Defrost,TB657.2
  15. Application Research on Second Heat Transfer Type Solar Water Heater,TK513
  16. Modeling Analysis of Thermal Characteristic of Solar Collectors Based on Artificial Neural Network,TK513
  17. Study on the Combustion Character of Black Liquor from NSSC in Fluidized Bed,TK16
  18. The Model Building and Optimization Study of the Dish Stirling Solar Thermal Power Geration System,TK514
  19. Preparation and Characterization of Silicon, Titanium Oxide Matrix and Their Composite Phase Change Energy Storage Materials,TB34
  20. The Selection and Performance Research of PCMs’ Container Materials Used for Solar Energy,TB34

CLC: > Industrial Technology > Energy and Power Engineering > Special heat and its mechanical > Solar Energy Technology > Collection and storage of solar energy
© 2012 www.DissertationTopic.Net  Mobile