throttling calorimeter

throttling calorimeter

[′thräd·əl·iŋ ‚kal·ə′rim·əd·ər] (engineering) An instrument utilizing the principle of constant enthalpy expansion for the measurement of the moisture content of steam; steam drawn from a steampipe through sampling nozzles enters the calorimeter through a throttling orifice and moves into a well-insulated expansion chamber in which its temperature is measured. Also known as steam calorimeter.