Browsing by Subject "heating value"
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Item type:Article, Access status: Open Access , New low-cost method for determination of heating value of natural gas(2011) Karpaš, Oleg Mihajlovič; Karpaš, Maksim Olegovič; Ribìc'kij, Ìgor Volodimirovič; Darvaj, Irina ÂroslavìvnaNew method for heating value determination has been proposed earlier which lays in simultaneous measurement of carbon dioxide and nitrogen concentrations and speed of sound in natural gas and use of neural network utilized for calculation of heating value. Based on reference data bases application of the method allowed to achieve relative error of 2.6% for heating value determination. Afterwards additional investigation has been made aimed to exclude nitrogen concentration measurement, which also gave good accuracy of heating value determination. Special experimental setup has been developed for experimental verification of the method. Experimental setup included commercial ultrasonic device for speed of sound measurement, special carbon dioxide concentration meter, relative humidity and temperature measuring units. Numerous experiments were completed using the setup with subsequent natural gas chromatographic analysis. Analysis of the achieved results showed good accordance of the theoretical model with experimental data.