The invention relates to the field of experimental research natural convection heat transfer and can be used in laboratory equipment with which the flow can be simulated parts of power plants under conditions of heat stress lash.; The object of the proposed utility model is to allow a pilot study the heat transfer in unsteady-free convective heat transfer horizontal cylinder of limited length.; Technical result is achieved by that in an apparatus for the study of unsteady free-convection heat transfer horizontal cylinder of limited length, comprising a thermocouple attached to the outer surface of the horizontal cylinder, a power source, a switching device, control station, according to the proposed utility model, the horizontal cylinder is designed as a thin-walled cylinder mounted on supports made of electrically conductive material and connected by means of switching Arrange with a post-OPERATION control and power source, configured as a DC power supply, wherein a horizontal cylinder cavity established ballast cylindrical body made of a dielectric material, and a thermocouple attached to an area bounded by a semicircle of the outer surface of the horizontal cylinder. Additionally, thermocouples are in the form of quick-response thermocouples with a time constant of 0.06 sec, and the control station comprises a detachably and data logging system consisting of a series-connected PC with a package of application programs, an expansion card connector panel terminal block , which are connected to the thermocouple.
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