1. What is the best possible size of your heating or cooling device?

2. How will you gauge the succes of your device?
3. Will your device transfer thermal energy by conduction, convection, radiation, or some combination of these methods?

1. The best size of a heating or cooling device would depend on factors such as the size of the space that needs to be heated or cooled, the insulation of the building, the climate of the area, and the desired temperature. It is important to get a device that is appropriately sized to efficiently and effectively regulate the temperature in the space.

2. The success of a heating or cooling device can be gauged by factors such as energy efficiency, the ability to maintain a consistent temperature, durability, ease of use, and overall satisfaction of the users.

3. The transfer of thermal energy in a heating or cooling device can be achieved through conduction, convection, radiation, or a combination of these methods. The method used will depend on the design of the device and the specific needs of the space being heated or cooled.