Nowadays it is necessary a new approach in the society, more focused on getting a sustainable behavior and development in a global environment. Today, it is accepted by most of the scientific community that the global warming is more and more enhanced by the increased CO2 in the atmosphere, due to the burning of fossils fuel for the last 100 years, necessary for various energy services.
At the same time it is also clear that many energy transformation processes have showed to be highly inefficient, because they mostly concentrate upon one energy service only. A higher efficient system would require using the available energy fully to supply different services (like power, heat, cooling, clean water, transportation fuel, pellets …) simultaneously. The concept of polygeneration (simultaneous transformation of basic energy sources) can be a practical way for getting a significant higher yield from the basic energy source.
Micro gas Turbines (MGT) are a relatively new distributed generation technology which is used for stationary energy generation applications. Their use for-on site smallscale energy production offers a great opportunity for primary energy saving and reduction of pollutant and greenhouse gas emissions. Microturbines can be used for generating power only or they can be used in cogeneration systems, for generating both power and heat (CHP systems), so it is possible locally recovering waste heat from exhaust gas, especially for Thermally Activated Technologies (TAT) The polygeneration lab at KTH hosts several test rigs that can be operated separately and also integrated. An important part of the work is to study, make and optimize the integration of the various rigs.
The objective of the work reported in this Thesis is installing and testing the performance of a new microturbine, with a very similar design to the old one, but provided with a more solid turbogenerator. The turbine performance will be analyzed for its possible future contribution in a polygeneration system. Moreover, the old microturbine will be disassembled for checking the causes of the vibrations, making conclusions about its shortcomings and suggestions for making sure that the new one will be a real improvement
Author: Saborit Rojas, Enrique
Source: KTH
>> Energy Saving Mechanical Projects for Engineering Students