Horizontal pipe external condensation heat exchange test device

The utility model relates to a horizontal pipe external condensation heat exchange test device, and belongs to the technical field of heat exchange. A low-temperature storage tank of the device entersa first pipe and a second pipe which are located in a cavity of an intermediate medium vaporizer and have different pipe outer roughness; the lower part of the cavity of the intermediate medium vaporizer is provided with a lower tube bundle for circulation of a heat supply medium; the first pipe and the second pipe are respectively provided with a corresponding inlet pressure transmitter, a corresponding inlet temperature transmitter, a corresponding outlet pressure transmitter and a corresponding outlet temperature transmitter probe; the cavity of the intermediate medium vaporizer is provided with a cavity temperature transmitter and a cavity pressure transmitter probe; an inlet and an outlet of the lower tube bundle are respectively provided with an inlet end temperature transmitter probe and an outlet end temp