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Techno-economic assessment of gas pressure-based electricity generation (A case study of Iran)
Authors:Ali Rahmatpour  Mohammad Javad Shaibani
Affiliation:1. Polymer Science Group, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, Tehran, Iran;2. Energy Economic Group, Faculty of Economic and Political Science, Shahid Beheshti University, Tehran, Iran
Abstract:The pipeline gas pressure can be recovered as electricity by installing a turbo-expander in parallel with throttle valves at pressure reduction stations. This paper aims to provide a techno-economic assessment of electricity generation at a gas pressure reduction station. Owing to the gas flow rate of the station, technical assessment showed two installation capacities of 2853 kw (Case I) and 4169 kw (Case II). As a result, NPV and IRR for Case I is calculated €1,669,623.93 and 28.95%; and for Case II, NPV and IRR is €1,393,871.91 and 23.91% respectively. The analysis indicated case I is more profitable than case II.
Keywords:Electricity generation  financial evaluation  gas pressure reduction station  net present value  turbo expander
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