Thermodynamic efficiency investigation for a micro-CHP system featuring a gas microturbine with an altered process sequence
Authors: Lipikhin E.G., Shevelev D.V.
Published in issue: #10(58)/2016
DOI: 10.18698/2308-6033-2016-10-1547
Category: Power, Metallurgic and Chemical Engineering | Chapter: Turbomachines and Combination Turbine Plants
We consider a cogeneration plant featuring a gas microturbine with an altered process sequence. We describe the flow diagram of our plant, its principle of operation and primary advantages: high heat energy conversion efficiency, fuel combustion at atmospheric pressure, absence of either a combustion chamber proper or a high-temperature microturbine gas-to-air heat exchanger. We supply thermodynamic parameter calculation results for our diagram operating in both traditional and low-temperature heating systems. Analysis of the results obtained shows that this cogeneration plant is feasible and is able to satisfy heating and electricity demands with microturbine parameters being characteristic of commercial centrifugal compressors used in conjunction with internal combustion engines. As a conclusion, we select the optimum microturbine pressure ratio to be πt = 1.6... 1.8, since it achieves a high micro-CHP thermal output with acceptable microturbine parameters.
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