The last 20 years have seen extensive studies on closed-loop thermosyphons, with wide applications in the thermal, geothermal, electronic solar, nuclear, and chemical process industries. This study aims to provide a novel passive heat transport device called the 'Thermosyphon Heat Transport Device' (THTD) for indoor solar cooking applications (Solar-Chulha). THTD is a type of passive heat transport device. The system typically consists of a heat source, adiabatic connecting pipes, and a cold sink, with no external pumps or mechanical devices required. As the fluid near the heat source is heated, it becomes less dense and rises, as the cooler fluid from the sink flows in to replace it. This process continues as long as there is a temperature difference between the hot leg and cold leg sides. The current cooktop integrated THTD is used to transport heat from a solar receiver outside to the indoor cooktop in the kitchen. A parametric study has been conducted by developing a MATLAB code to examine the impact of the heat source, adiabatic connecting pipe and cold sink sections, and the heat transfer fluid (HTF) on the natural circulation flow. The performance is experimentally evaluated for 6 heat loads (ranging from 200 to 700 W), 3 coolant flow rates (1, 2 and 3 lpm), and 2 centerline elevation differences (1.62 and 1.38 m). The test results are then compared with the predictions of the MATLAB code.