Final answer:
Heat Exchanger Design Criteria: material properties, efficiency, reservoir temperatures
Step-by-step explanation:
For a successful heat exchanger design, the following criteria must be met:
- The heat transfer rate depends on the material properties described by the coefficient of thermal conductivity.
- The greatest efficiencies are obtained when the ratio Te/Th is as small as possible, meaning that efficiency is greatest for the highest possible temperature of the hot reservoir and lowest possible temperature of the cold reservoir.
- The actual reservoir temperatures of a heat engine are usually related to the type of heat source and the temperature of the environment into which heat transfer occurs.