differential steam calorimeter

differential steam calorimeter

[‚dif·ə′ren·chəl ′stēm kal·ə′rim·əd·ər]
(engineering)
An instrument for measuring small specific-heat capacities, such as those of gases, in which the amount of steam condensing on a body containing the substance whose heat capacity is to be measured is compared with the amount condensing on a similar body which is evacuated or contains a substance of known heat capacity.
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