Method for inferring temperature in an enclosed volume

摘要

A method for inferring temperature in an enclosed volume containing a fuel/oxidant mixture, the method comprises placing at least one wire in the enclosed volume. The at least one wire having an identifiable property wherein the identifiable property of the at least one wire changes from a first identifiable state at a temperature below the auto-ignition temperature of the fuel/oxidant mixture to a second identifiable state at a temperature above the auto-ignition temperature of the fuel/oxidant mixture, and determining if the identifiable property of the at least one wire has changed from the first identifiable state to the second identifiable state and hence if the temperature in the enclosed volume is above the auto-ignition temperature of the fuel/oxidant mixture.

主权项

1. A method for inferring temperature in an enclosed volume, the enclosed volume either containing a fuel/oxidant mixture with a predetermined auto-ignition temperature or being supplied with a fuel and an oxidant to form a fuel/oxidant mixture with the predetermined auto-ignition temperature in the enclosed volume, the method comprising:
(i) placing at least one wire in the enclosed volume, the at least one wire having a transition temperature at which an identifiable property of the at least one wire changes from a first identifiable state to a second identifiable state, wherein
the materials of the at least one wire are selected such that the transition temperature of the at least one wire is at or above the predetermined auto-ignition temperature of the fuel/oxidant mixture,the first identifiable state is observed at a temperature below the predetermined auto-ignition temperature of the fuel/oxidant mixture, andsecond identifiable state is observed at a temperature at or above the predetermined auto-ignition temperature of the fuel/oxidant mixture; and (ii) determining if the identifiable property of the at least one wire has changed from the first identifiable state to the second identifiable state and hence if the temperature in the enclosed volume is at or above the predetermined auto-ignition temperature of the fuel/oxidant mixture, wherein: the identifiable property of the at least one wire is a change in electrochemical state, the first identifiable state is an oxidized state and the second identifiable state is a reduced state in which (i) the change in electrochemical state of the at least one wire from the first identifiable state to the second identifiable state involves determining a color change of the at least one wire in which the color change is determined by a determining device or (ii) the change in electrochemical state of the at least one wire from the first identifiable state to the second identifiable state involves determining a change in resistivity in the at least one wire in which the wire changes from being electrically resistive in the first identifiable state to being more electrically conductive in the second identifiable state.