The Minto Wheel is a power-producing device activated by evaporating and condensing a working substance. The only energy input would be from a waste heat solar source. Write a paper explaining the operating principles of the device. Indicate whether the Minto wheel operates as a thermodynamic power cycle, and if so give the range of thermal efficiencies that might be archieved. Evaluate propane as a working substance and suggest an alternative. How would the wheel diameter and the volumes of the containers holding the working substance affect performance? Are there any practical applications for such a device? Discuss.