APPARATUS FOR MEASURING THE EFFECTIVE THERMAL CONDUCTIVITY OF THE GROUND USING MULTI-CABLE

摘要

PURPOSE: A device for measuring valid underground heat conductivity using a multi-cable is provided to remarkably reduce costs and time by simultaneously testing valid underground heat conductivity of various heat exchangers. CONSTITUTION: A device for measuring valid underground heat conductivity using a multi-cable comprises a multi cable(2), an optical fiber sensor thermoscope(4), and a heating cable temperature controller(5). The multi cable has a heating cable and an optical fiber sensor. The heating cable is installed in a bore hole(101). The optical fiber sensor measures the temperature of underground. The optical fiber sensor thermoscope processes the temperature information. The heating cable temperature controller controls the temperature of the heating cable.