Apparatus for determining enthalpy of high temperature gas

Claim 1

APPARATUS FOR DETERMINING FACTORS ENABLING COMPUTATION OF THE ENTHALPY OF A GAS WHICH MAY BE TOO HOT TO HAVE ITS TEMPERATURE SENSED DIRECTLY, COMPRISING A MAIN CONDUIT, A BYPASS CONDUIT HAVING ONE END CONNECTED TO SAID MAIN CONDUIT AT AN UPSTREAM LOCATION AND HAVING ITS OTHER END CONNECTED TO SAID MAIN CONDUIT AT A DOWNSTREAM LOCATION, SAID MAIN CONDUIT BEING OF SUBSTANTIALLY UNIFORM CROSS-SECTION UPSTREAM FROM SUCH BYPASS ONE END CONNECTION, SAID GAS FLOW THROUGH SAID CONDUITS, MEANS FOR ANNULARLY FLOODING AT A KNOWN FLOW RATE THE INTERNAL SURFACE OF SAID MAIN CONDUIT AT THE ENTRANCE THERETO WITH A TRANSPIRATION COOLANT OF KNOWN TEMPERATURE WHICH IS CARRIED DOWNSTREAM BY THE GAS FLOWING THROUGH SAID MAIN CONDUIT SO AS TO FORM ON THE INTERNAL SURFACE OF SAID MAIN CONDUIT A FILM WHICH ENVELOPS THE GAS STREAM, MEANS FOR DETERMINING THE FRACTION OF COOLANT TO GAS IN THE PORTION OF SAID STREAM FLOWING THROUGH SAID BYPASS CONDUIT, MEANS FOR MEASURING THE TEMPERATURE OF SAID STREAM AT SAID UPSTREAM LOCATION, AND MEANS FOR MEASURING THE FLOW RATE OF SAID STREAM.