Temperature measurement method for execution of indirect heat exchange between natural gas and heating/cooling fluid, involves evaluating optical signals of fiber-optic cable provided inside coiled heat exchanger

• Main Authors: FLUEGGEN, RAINER, SCHOENBERGER, MANFRED, SPREEMANN, JUERGEN, STEINBAUER, MANFRED
• Format: Patent
• Language: English; German
• Published: 13.11.2008
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; MANUFACTURE OR STORAGE OF ICE; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MECHANICAL ENGINEERING; MIXTURES BY PRESSURE AND COLD TREATMENT; PHYSICS; REFRIGERATION OR COOLING; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR; WEAPONS

The method involves using pipes coiled around a core pipe and a mantel, which limits an outside space around the pipes. Optical signals of a fiber-optic cable are evaluated, where the fiber-optic cable is provided inside a coiled heat exchanger. A temperature measurement in the coiled heat exchanger is carried out by the evaluation of optical signals produced by Raman scattering, Brillouin scattering or scattering at Bragg grating. The optical signals of the fiber-optic cable are evaluated to coil the pipes in an inner space or on an exterior in a mantel space. Die vorliegende Erfindung beschreibt ein Verfahren zur Temperaturmessung in einem gewickelten Wärmetauscher. Die Temperatur wird entlang eines sich im Inneren des Wärmetauschers befindlichen Lichtwellenleiters über die Auswertung der optischen Signale des Lichtwellenleiters, beispielsweise mittels Ramanstreuung, bestimmt.