Device and method for measuring heat conductivity coefficients of gas-liquid ingredients

Abstract

The invention discloses a device and method for measuring heat conductivity coefficients of gas-liquid ingredients, and can realize measurement of the heat conductivity coefficients of a gas state anda liquid state simultaneously under the working condition of controllable temperature and pressure (or concentration). The measuring device comprises a test body, a gaseous phase heat conductivity coefficient tester, a condensing coil, a liquid phase heat conductivity coefficient tester, a first stop valve, a data acquisition instrument, a water tank, a solution pump, a second stop valve, a heatexchanger, a liquid phase temperature sensor, a temperature controller, a heating coil, a gaseous phase temperature sensor, a constant pressure valve and a pressure sensor; the condensing coil is fixedly connected with an inner cavity of the test body, and a water outflow end of the condensing coil is connected with a first water inflow end of the water tank through a first pipeline; a water outflow end of the water tank is connected with a water inflow end of the heat exchanger through a second pipeline; a water outflow end of the heat exchanger is connected with a water inflow end of the condensing coil; the heating coil is fixedly connected with an inner cavity of the test body, and the temperature controller is connected with the heating coil.

Description

technical field [0001] The invention belongs to the field of performance measurement of gas-liquid components, and in particular relates to a device and method for measuring the thermal conductivity of gas-liquid components. technical background [0002] Thermal conductivity is one of the most basic thermophysical properties of matter. It is widely used in energy, chemical, refrigeration and other industries. Thermal fluids, especially in thermal devices (such as evaporators, condensers, generators, rectifiers, etc.), are often in a state of gas and liquid coexistence. At this time, the temperature, pressure, and volume (or temperature, pressure, and concentration) in the heat exchange equipment are in a steady state or an unsteady state. How to accurately measure the thermal conductivity of the gas-liquid two-phase medium in a transient or steady state is a prerequisite for heat transfer calculations and has become one of the key factors to ensure the rational design of h...

AI Technical Summary

Problems solved by technology

Measurement of thermal conductivity under steady-state conditions where the existing thermal conductivity testing instruments cannot meet the requirements of temperature, pressure or concentration at the same time

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