A closed loop vapor cycle generated by a special device formed by heat transfer and a vapor expander means it is utilized to convert waste heat from conventional power systems into additional thermodynamic work, thereby improving the overall power system efficiency. The system includes a memory for storing a set temperature value and a release temperature value, a temperature sensor for sensing an internal temperature of the mobile device; at least one module that emits heat, and a controller. The first and second filter elements, may be commonly housed within a sealed housing. Computer instructions instruct the processor to identify specifications representing the tow-vehicle and trailer assembly and to calculate force values and motion values affecting the tow-vehicle and trailer assembly.