HEATING VALUE DERIVATION DEVICE AND HEATING VALUE DERIVATION METHOD

Title:

HEATING VALUE DERIVATION DEVICE AND HEATING VALUE DERIVATION METHOD

Document Type and Number:

WIPO Patent Application WO/2016/163205

Kind Code:

A1

Abstract:

Provided are a heating value derivation device and a calorific value derivation method that allow a cost reduction to be achieved. A gas meter (calorific value derivation device) 110 is provided with a sonic speed derivation unit 160 that derives the sonic speed of gas flowing through a gas flow path, a calorific value derivation unit 164 that refers to correspondence relation information by which the calorific value per unit volume of gas is unambiguously derivable from the gas sonic speed and derives the calorific value per unit volume of gas, regardless of the type of gas, on the basis of the sonic speed derived by the sonic speed derivation unit 160, and a flow rate derivation unit 162 that derives the flow rate of gas that has passed through the gas flow path. Thereby, it is possible to derive the calorific value of gas that has passed through the meter.

Inventors:

KUNIGO YUTAKA (JP)
HISHINUMA YUICHI (JP)
KOBAYASHI KENCHI (JP)
IMANISHI HIRONORI (JP)

Application Number:

PCT/JP2016/057790

Publication Date:

October 13, 2016

Filing Date:

March 11, 2016

Export Citation:

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Assignee:

TOKYO GAS CO LTD (JP)

International Classes:

G01F1/66; G01N29/024; G01F3/22

Foreign References:

JP3611416B2

2005-01-19

Other References: