| Zugriffsnummer | 16856 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Feasibility study for the design of a reference gas calorimeter |
| Autor(in); Institution |
Ulbig, Peter; 3.103, Thermodynamische Eigenschaften von Gasen, PTB-Braunschweig
Kimpton, Sarah; Advantica Technologies Ltd., Loughborough, UK
|
| Quelle/Jahr | Conference and Exhibition on Natural Gas Quality: Proceedings:(2002), 25 S. |
| Herausgeber(in) |
National Physical Laboratory, Teddington, UK
|
| Verlag | Loughborough: Advantica Technologies |
| Konferenzangaben | 1st Advantica Gas Quality Conference, Loughborough, 26-28, November, 2002, UK |
| Zusammenfassung | A reference gas calorimeter is used for determining the calorific value of gases at the highest metrological level. The calorimeter must be an absolute instrument traceable to the base units than can be used to determine both reference values for the calorific value of pure gases and the calorific value of gas mixtures to be used as calibration gases. These calibration gases are required of indirect measuring instruments used by the gas industry, for example, process gas chromatographs or calorimeters. The reduction of energy-measurement uncertainties is directly linked to a reduction in the economic uncertainties in the energy industry. It was the aim of the feasibility study to determine whether it was possible to develop a reference gas calorimeter with a measuring uncertainty for the calorific value of less than 0,05% (k=2). A number of different calorimetric principles were investigated, and the two most promising methods for the determination of the calorific value were examined in more detail. The uncertainty budgets of two types of calorimeter were derived together with the input parameters that had the greatest influence on the uncertainty of the calorific value. The two reference gas calorimeters that are able to measure calorific value with an uncertainty of less than 0,05% are based on the principles ot Rossini and Aleksandrov. The Rossini calorimeter has, at present, a slight advantage over the Aleksandrov. |
