High-temperature adiabatic calorimeter for constant-volume heat capacity measurements of compressed gases and liquids

High-Temperature Adiabatic Calorimeter for Constant-Volume Heat Capacity Measurements of Compressed Gases and Liquids

A high-temperature adiabatic calorimeter has been developed to measure the constant-volume specific heat capacities (cV ) of both gases and liquids, especially fluids of interest to emerging energy technologies. The chief design feature is its nearly identical twin bomb arrangement, which allows accurate measurement of energy differences without large corrections for energy losses due to therma...

High Accuracy Heat Capacity Measurements through the Lambda Transition of Helium with Very High Temperature Resolution

Experiment 3. Heat-capacity Ratios for Gases

In considering the theoretical calculation of the heat capacities of gases, we shall only be concerned with perfect gases. Since Ĉp = Ĉv + R for an ideal gas (where Ĉp and Ĉv are the molar quantities Cp/N and Cv/N), our discussion can be restricted to Cv. The number of "degrees of freedom" for a molecule is the number of independent coordinates needed to specify its position and configuration. ...

Spark Heat Transfer Measurements in Flowing Gases

Ë partir de techniques basŽes sur lÕinterfŽromŽtrie holographique, lՎnergie totale transfŽrŽe par une Žtincelle aux gaz environnants a ŽtŽ mesurŽe en faisant varier la gŽomŽtrie des Žlectrodes de la bougie dÕallumage, la vitesse des gaz, la pression et le temps de charge de la bobine, cette dernire Žtant un modle standard pour automobile. Pour les diffŽrentes combinaisons et valeurs des para...

High-pressure phase equilibria with compressed gases.

An apparatus is described that is capable of determining high-pressure vapor-liquid equilibrium, liquid-liquid equilibrium, solid-liquid-vapor equilibrium, vapor-liquid-liquid equilibrium, and mixture critical points and transitions. The device is capable of temperatures to 150 degrees C and pressures to 300 bars (higher with slight modifications). The construction and operation are described i...