Peltier heat pump

Principle

As well as the cooling and the heating capacity and efficiency rating of a Peltier heat pump are determined under different operating conditions.

Benefits

• Open design allows to fully understand function and applications
• Individual instruments for distinct functions (no "black box")
• Key products of the experiment setup can also be used for investigating the Seebeck effect

Tasks

1. To determine the cooling capacity P_c of the pump as a function of the current and to calculate the efficiency rating h_c at maximum output.
2. To determine the heating capacity P_w of the pump and its efficiency rating h_w at constant current and constant temperature on the cold side.
3. To determine P_w, η_w and P_c , η_c from the relationship between temperature and time on the hot and cold sides.
4. To investigate the temperature behaviour when the pump is used for cooling, with the hot side air-cooled.

Learning objectives

• Peltier effect
• Heat pipe
• Thermoelectric e. m. f.
• Peltier coefficient
• Cooling capacity
• Heating capacity
• Efficiency rating
• Thomson coefficient
• Seebeck coefficient
• Thomson equations
• Heat conduction
• Convection
• Forced cooling
• Joule effect