Proof of concept of the Rankine Compression Gas Turbine (RCG) for a rapid peak-shaving response in industrial application

•Experimental investigation of a novel Rankine Compression Gas Turbine cycle as an add-on.•The Implementation of RCG add-on for an existing biomass fired boiler.•The free power turbine provides flexible electrical outputs to satisfy a peak-shaving demand.•The RCG add-on has a rapid response of up to...

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Bibliographic Details
Published in:Applied thermal engineering 2020-06, Vol.173, p.115251, Article 115251
Main Authors: de Lange, H.C., Ouwerkerk, H., Schot, J., Abdelaal, H.A.N.
Format: Article
Language:English
Subjects:
Air compressors
Air flow
Boiler furnaces
Co-generation
Combined cycle
Electricity generation
Free power turbine
Furnaces
Gas turbines
Industrial applications
Load fluctuation
Peak-shaving
Power cycle
Response time
Solid fuels
Solid-fuel
Transient response
Turbomachinery
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Summary:•Experimental investigation of a novel Rankine Compression Gas Turbine cycle as an add-on.•The Implementation of RCG add-on for an existing biomass fired boiler.•The free power turbine provides flexible electrical outputs to satisfy a peak-shaving demand.•The RCG add-on has a rapid response of up to 3–4 s for flexible power loads. This paper describes and assesses the results of an experimental study of a Rankine Compression Gas Turbine (RCG) used as an add-on system to an existing industrial solid fuel-fired furnace and steam boiler. The RCG is a new type of combined steam-gas-turbine cycle that has the capability of a rapid response compared to conventional combined-cycle systems. The novelty can be found by the addition of an air cycle that powers a free power turbine for electricity generation. A small scale (5 kWe) proof of concept has been installed in a wood processing plant in the Netherlands, comprising commercially available industrial turbomachinery components. Transient responses of 3–4 s for a load variation of 1000–4800 W have been obtained. It is expected that a shorter response time can be achieved when the total volume between the compressor and power turbine is reduced.
ISSN:1359-4311
1873-5606
DOI:10.1016/j.applthermaleng.2020.115251