Flow speed measurement method and flow speed measurement system

Abstract

A flow speed measurement method according to one embodiment of the present invention involves carrying out heat exchange on a prescribed portion of the surface of a pipe, measuring the surface temperature distribution in the pipe axis direction of the pipe that has had heat exchange carried out on a prescribed portion, and determining the flow speed of thermal fluid flowing inside the pipe on the basis of the measured temperature distribution.

Description

technical field [0001] The invention relates to a flow velocity measurement method and a flow velocity measurement system. [0002] This application claims priority based on the application No. 2014-021298 filed in Japan on February 6, 2014, and incorporates the above content into the present application. Background technique [0003] Conventionally, as a method of measuring the flow rate of a fluid flowing in a pipe, it has been disclosed to use two temperature sensors installed upstream and downstream on the surface of the pipe to detect a change in temperature of the fluid flowing in the pipe, and to calculate the pipe flow rate based on the time difference at this time. A technique such as the flow rate of the fluid flowing inside (for example, refer to Patent Document 1). [0004] When the above-mentioned conventional techniques are used to measure the steam flow rate, there are cases where accurate measurement cannot be performed. This is because the thermal conducti...

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Problems solved by technology

[0004] When the above-mentioned conventional technology is used to measure the steam flow rate, it may not be measured accurately

This is because the thermal conductivity of steam is much lower than that of water, so the heat of the steam flowing in the pipe cannot be transferred to the surface of the pipe, and the temperature cannot be detected well by the temperature sensor.

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