Sökning: "Working cycle"
Visar resultat 1 - 5 av 147 avhandlingar innehållade orden Working cycle.
1. Advanced power cycles with mixture as the working fluid
Sammanfattning : The world demand for electrical power increasescontinuously, requiring efficient and low-cost methods forpower generation. This thesis investigates two advanced powercycles with mixtures as the working fluid: the Kalina cycle,alternatively called the ammonia-water cycle, and theevaporative gas turbine cycle. LÄS MER
2. Conceptual Thermodynamic Cycle and Aerodynamic Gas Turbine Design - on an Oxy-fuel Combined Cycle
Sammanfattning : The world is today facing a serious problem with global warming, which is heading towards an appallingly high temperature level. The greater part of the overall climate science community agree that global warming is caused by the greenhouse effect, which depends largely on emitted CO2 emissions from the combustion of fossil fuel. LÄS MER
3. Thermodynamic Cycles using Carbon Dioxide as Working Fluid : CO2 transcritical power cycle study
Sammanfattning : The interest in utilizing the energy in low‐grade heat sources and waste heat is increasing. There is an abundance of such heat sources, but their utilization today is insufficient, mainly due to the limitations of the conventional power cycles in such applications, such as low efficiency, bulky size or moisture at the expansion outlet (e.g. LÄS MER
4. Marketing for Life Cycle Thinking
Sammanfattning : The concept of “life cycle thinking” creates possibilities for major improve¬ments in environ¬mental performance, but compels companies to look beyond their own immediate sites and operations to consider the broader picture of their products’ or services’ environmental impact. This thesis seeks to explore company attempts to implement such life cycle thinking (LCT), and how this connects with their self-inte¬rest in terms of market success. LÄS MER
5. Waste Heat Recovery in Heavy Duty Diesel Engines
Sammanfattning : Over 50% of the energy released by burning fuel in a truck engine is lost as heat rather than being used to propel the vehicle. A promising method for capturing and reusing this heat, and thereby improving engine efficiency, is to exploit thermodynamic cycles for waste heat recovery (WHR). LÄS MER