Experimental Evaluation of the Methane Number Measurement Procedure for Gaseous Fuel Rating-Reference-Cited by-同舟云学术

Experimental Evaluation of the Methane Number Measurement Procedure for Gaseous Fuel Rating

Published:2024-05-01 Issue:9 Volume:17 Page:2172
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Baucke Dawson P.¹,Wise Daniel M.¹,Bremmer Robin J.¹^ORCID,Olsen Daniel B.¹

Affiliation:

1. Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA

Abstract

Methane Number (MN) is a fuel rating technique for gaseous fuels analogous to Octane Number. This study establishes and shares a repeatable and reproducible method for MN determination of a gaseous fuel using a modified Cooperative Fuel Research Engine (CFR). Adaptations required to convert a CFR engine for use in the MN test procedure are identified. The investigation includes allowable environmental parameters and operating variation limits. An essential aspect of the MN method involves identifying and quantifying Knock Intensity (KI) during engine operation. CFR engines, originally designed for gasoline testing, come equipped with their own knock measurement systems utilizing a capacitive detonation sensor. The original system is compared with a Fast Fourier Transform (FFT) approach that uses a piezoelectric pressure transducer. Quantification of methane number requires an accurate assessment of the reference fuel blend (CH4 + H2). A comparison is carried out between dynamic blending using mass flow meters and bracketing using certified gas bottles containing various CH4/H2 blends from a gas supplier.

Publisher

MDPI AG

Link

https://www.mdpi.com/1996-1073/17/9/2172/pdf

Reference11 articles.

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