Last Round of Evaluation for this paper…

Well, I am at a point where I believe I have the data to support my conclusions.  I am planning to run one or two more comparisons. There have been some interesting results, not necessarily as I expected. Somewhat eye opening has been the overall thermal efficiency of the Rankine cycle and inability to capture more than ~36% of the available thermal energy. This is a cycle in which almost all the thermal energy is accounted for excluding low-grade, low pressure waste in the condenser. During my research, I have read a number of papers about Shinchi power station. Exemplifying Japan’s efforts to push power plant technology to its limits, with a measured thermal efficiency above 43% (LHV), Shinchi is one of the largest coal-fired power plants in the world using sliding-pressure technology, which avoids losses associated with throttling valves at low loads. High-pressure steam is maintained at 1,200 psig for loads up to 320 MW. As loads increase to 960 MW, high-pressure steam slides up to a maximum 3,700 psig. (Power Engineering, PEI, 2009) Expected to be commissioned through 2010 to produce in excess of 1,050MW.

As new plants come on line, the focus of my work continues to be, “what and how do we retrofit the existing ones – efficiently from both a cost and schedule perspectives “. It is an interesting problem. I believe there is an opportunity for Stirling technology and that it will play a role in our future.

It seems we return to the same challenges; the efficiency of converting the available energy in “fuel” through a process to electrical energy. Look out for a final summary of the results within the next three weeks. I will also make available a link to the entire paper once it is complete – perhaps I will also provide some of my earlier Stirling research through Cal State Northridge. 

Thanks for continuing to check in!

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~ by frazerthompson on May 24, 2009.

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