Centrica Hive Limited

Peter Easey

David Griffin

A method and apparatus for making a flow determination with respect to a flow through a fluid conduit is described. The apparatus comprises a first temperature sensor arranged to generate a temperature signal indicative of the temperature of the outer surface of the fluid conduit, a second temperature sensor arranged to generate a temperature signal indicative of the ambient temperature outside of the fluid conduit; and a processor arranged to make the flow determination. The flow determination is made by determining the first and second temperatures at a first time; predicting a predicted first temperature at a second time; determining the first temperature at the second time; and comparing the predicted first temperature with the determined first temperature at the second time.

Flow determination

An apparatus for making a flow determination with respect to a flow through a fluid conduit such as a domestic water pipe, the fluid conduit comprising a wall having an inner surface surrounding a flow space through which the fluid flows and an outer surface, the apparatus comprising: a first temperature sensor arranged to be mounted on the outer surface of the fluid conduit and arranged to generate a first temperature signal indicative of a first temperature being the temperature of the outer surface; a second temperature sensor arranged to be positioned spaced apart from the first temperature sensor and to generate a second temperature signal indicative of a second temperature being the ambient temperature outside of the fluid conduit; and a processor having inputs for the first and second temperature signals; in which the processor has an output for the flow determination and is arranged to make the flow determination by determining a measure of the convergence of the first and second temperatures over time.

Methods and apparatus for determination of flow through a fluid conduit based on a measured convergence of fluid conduit temperature and ambient temperature

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Windsor, United Kingdom

Peter Easey