SU1233020A1 - Cryoscopic cell - Google Patents

Abstract

The invention relates to a physicochemical study of the properties of substances and can be used to determine the purity of liquids or gases, to measure the heat capacity of substances, and to study phase equilibria. The purpose of the invention is to improve the accuracy of the analysis due to the more rapid establishment of thermodynamic equilibrium. The cryoscopic cell contains a metal vessel 1 for the analyte with a pocket for a thermometer 2 in the center of the vessel, heater 4, heat contacts 5, connecting the walls of the pocket and vessel and are copper rings tightly attached to the heater tube and separating the cavity of the cell by equal to ( L tsd oo soo go

Description

1233020

The volumes are communicated. After each dynamic dynamic equilibrium in the substance and the heat supplied, a temperature is measured. I il.

The invention relates to the physicochemical study of the properties of substances and can be used to determine the cleanliness of the tanks or gases, to measure the heat capacity of substances, and to study phase equilibria.

The aim of the invention is to increase the accuracy of the analysis. Due to the more rapid establishment of thermodynamic equilibrium in the system under study.

The drawing shows a cryoscopic cell.

It contains a metal container 1 for the analyte, a pocket for the thermometer 2, a tube 3 for entering the substance, a heater 4 in the form of a spiral tube, heat contacts 5 connecting the walls of the pocket and the vessel and representing copper rings tightly attached to the heater tube and the partition cavities whose ki are on equal communicating volumes. The cell is surrounded by an adiabatic screen and placed in a vacuum chamber (not shown). Cryoscopic cell works as follows.

Editor B, Ivanova

Compiled by G. Trembovetsky

Tehred L.Serdyukova Proofreader M.Samborska

Order 2761/44 Circulation 778 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Through the tube 3, the test gas or liquid is loaded into the vessel 1 and cooled to a solid state. Heater 4 is then periodically turned on, melting the substance to be analyzed in portions to fully melt. Measure the amount of energy supplied to the heater. After each portion of the reported heat, thermodynamic equilibrium is established in the substance and its temperature is measured.

Claims (1)

Fs claims A cryoscopic cell containing a metal vessel with a pocket for a thermometer in the center of the vessel, a heater in the form of a spiral tube of heat-conducting material located inside the vessel, and heat contacts, connecting the heater with the walls of the vessel and the pocket, which differs from , in order to ensure the accuracy of the analysis, the heat contacts are made in the form of rings, evenly located on the heater, and the outer diameter of the rings is equal to the distance between the inner surface of the wall 30 vessel and outer wall pocket. 25