Process for temperature controlling a liquid

摘要

PCT No. PCT/DE84/00132 Sec. 371 Date Jun. 17, 1985 Sec. 102(e) Date Jun. 17, 1985 PCT Filed Jun. 12, 1984 PCT Pub. No. WO85/00420 PCT Pub. Date Jan. 31, 1985.A method for the temperature control of a liquid and an apparatus to effect such a method wherein the heating of the liquid is carried out by irradiation with acoustic ultrasonic waves. Temperature measurement is effected by a probe immersed in the liquid or by contact-free measurement of infra-red radiation from the liquid. Temperature control is effected by comparison of the measured temperature with a predetermined desired temperature. Since the acoustic ultrasonic heating is thermally inertialess, extreme accuracy of temperature control is possible.