| 摘要 | 第1-7页 |
| ABSTRACT | 第7-12页 |
| CHAPTER 1: GENERAL INTRODUCTION | 第12-22页 |
| ·Fossil fuel and renewable energy | 第12-13页 |
| ·Fossil fuel | 第12页 |
| ·Renewable energy | 第12-13页 |
| ·Global energy gap | 第13页 |
| ·Effect on environment | 第13-14页 |
| ·Biogas | 第14-17页 |
| ·Temperature | 第15-16页 |
| ·pH value | 第16页 |
| ·Percentage of solids | 第16-17页 |
| ·Solar energy | 第17-18页 |
| ·Flat solar heater | 第17-18页 |
| ·Solar collector | 第18页 |
| ·Using solar energy for heating biogas digester | 第18-19页 |
| ·Preface of study | 第19-20页 |
| ·Some software used in study | 第20页 |
| ·AutoCAD | 第20页 |
| ·SketchUp | 第20页 |
| ·MATLAB | 第20页 |
| ·EnergyPluse | 第20页 |
| ·Openstudio Plug-in | 第20页 |
| ·Innovation | 第20-22页 |
| CHAPTER 2: PROBLEMS STATEMENT: EFFECT OF CHANGING AMBIENT TEMPERATURE DIRECTION ON BIOGAS PRODUCTION | 第22-34页 |
| ·Introduction | 第22页 |
| ·Material and methods | 第22-25页 |
| ·The experiment design and unit setup with measurement tools | 第22-24页 |
| ·Biogas digesters | 第24页 |
| ·The fermentation material and inoculants | 第24-25页 |
| ·Gas production | 第25页 |
| ·Temperature measurement | 第25页 |
| ·Result and Discussion | 第25-32页 |
| ·The relation between ambient temperature and the temperature inside the digesters | 第26-27页 |
| ·The relation between the temperature inside the digesters and gas production | 第27页 |
| ·The relation between the temperature inside the digesters and gas production in outdoor group | 第27-29页 |
| ·The relation between the temperature inside the digesters and gas production in control room group | 第29-31页 |
| ·Comparisons between the gas productions with different Ts in the two groups | 第31-32页 |
| ·Conclusion and summary | 第32-34页 |
| CHAPTER 3: DESIGN AND NUMERICAL SIMULATION OF PARABOLIC TROUGH SOLAR COLLECTOR (PTC) FOR IMPROVE THE EFFICIENCY | 第34-53页 |
| ·Introduction | 第34-35页 |
| ·Design of PTC | 第35-47页 |
| ·Focal point and Parabola design | 第37-45页 |
| ·Focal point | 第37-38页 |
| ·Frame Design | 第38-45页 |
| ·Heating pipe | 第45-46页 |
| ·The surface area of solar collector | 第46-47页 |
| ·Solar energy calculation | 第47-52页 |
| ·The solar energy flux incident on a tilted surface per day | 第47-50页 |
| ·Extraterrestrial radiation on a horizontal surface outside earth's atmosphere (Ho) | 第47-48页 |
| ·Total solar radiation flux incident on horizontal surface of the ground (H) | 第48-49页 |
| ·Ratio of monthly average radiation on a horizontal surface to the monthly average daily extraterrestrial radiation (kt) | 第49页 |
| ·Beam and diffuse components of daily radiation. | 第49页 |
| ·Total solar radiation flux incident on a fixed slope surface(Ht) | 第49-50页 |
| ·The solar energy flux incident on a tilted surface per Hour | 第50-52页 |
| ·The clear sky beam radiation on a horizontal surface (Icb) | 第50-51页 |
| ·The clear sky diffuses radiation on a horizontal surface (Icd) | 第51页 |
| ·The clear sky total radiation on a horizontal surface(Ic) | 第51页 |
| ·An hour clearness index(kt ) | 第51页 |
| ·Beam and diffuse components of radiation per hour | 第51页 |
| ·Total radiation on tilted surface(IT) | 第51-52页 |
| ·Conclusion | 第52-53页 |
| CHAPTER 4: SIMULATION OF SOLAR HEATING BIOGAS DIGESTERS ABOVE AND UNDER-GROUND FOR RAISING ORGANIC MATTER TEMPERATURE WITHOUT USING PTC | 第53-67页 |
| ·Introduction | 第53页 |
| ·Material and methods | 第53-57页 |
| ·Biogas digester above ground | 第55页 |
| ·Design of biogas digester above the ground | 第55页 |
| ·Design of Solar heating system for biogas digester above ground | 第55页 |
| ·Biogas digester underground | 第55-57页 |
| ·Design of biogas digester underground | 第55页 |
| ·Design of greenhouse | 第55-56页 |
| ·Design of inlet | 第56-57页 |
| ·Result and Discussion | 第57-65页 |
| ·Environmental variables | 第57-59页 |
| ·Biogas digester above ground (D1) | 第59-60页 |
| ·Biogas digester above ground with heating system (D2) | 第60-61页 |
| ·Biogas digester | 第60-61页 |
| ·Heating system of Biogas digester above ground | 第61页 |
| ·Biogas digester underground(D3) | 第61-62页 |
| ·Biogas digester underground with inlet heating (D4) | 第62-65页 |
| ·Biogas digester | 第63页 |
| ·Inlet | 第63-64页 |
| ·Greenhouse | 第64-65页 |
| ·Comparison between four digesters | 第65页 |
| ·Conclusion | 第65-67页 |
| CHAPTER 5: HEATING BIOGAS DIGESTER BY USING PTC AND GREEN HOUSE | 第67-83页 |
| ·Introduction | 第67-68页 |
| ·Material and methods | 第68-75页 |
| ·Description of first part | 第68-72页 |
| ·Biogas digester | 第69-71页 |
| ·Solar heating system | 第71页 |
| ·Greenhouse | 第71页 |
| ·Design of hot water auxiliary | 第71页 |
| ·Control unit | 第71-72页 |
| ·Description of second part (Future design) | 第72-75页 |
| ·Biogas digester | 第72-73页 |
| ·Solar water heater | 第73-74页 |
| ·The green house | 第74-75页 |
| ·Result and Discussion | 第75-80页 |
| ·Green house | 第75-76页 |
| ·Solar water heater | 第76-77页 |
| ·Biogas digester | 第77-80页 |
| ·The new system | 第80页 |
| ·Analyze of system and economic study | 第80-82页 |
| ·Calculation of total energy for heating and Co2 emissions | 第80页 |
| ·The overall energy collected by the system | 第80-81页 |
| ·Economic study | 第81-82页 |
| ·Conclusion | 第82-83页 |
| CHAPTER 6: CONCLUSION AND RECOMMENDATION | 第83-85页 |
| REFERENCES | 第85-90页 |
| LIST OF TABLE | 第90-91页 |
| LIST OF FIGURES | 第91-100页 |
| APPENDIX A | 第100-109页 |
| APPENDIX B | 第109-116页 |
| ACKNOWLEDGEMENT | 第116-117页 |
| CURRICULUM VITAE | 第117-119页 |
