A thermoelectric cooling module or Peltier module is a building
block for construction of thermoelectric cooling systems. The
COP and the cooling capacity of the module may be estimated
using the conventional module theory based on one-dimensional
heat balance equations, in which the thermal and electrical contact
resistances are neglected. The COP derived in the conventional
module theory is determined by the hot and cold side temperatures
of a module and the figure of merit of thermoelectric
material but not by the length of a thermoelement. Hence,
it cannot be used to optimize the length of a thermoelement.
Min and Rowe developed an improved model which took into
account both the thermal and electrical contact resistances. Their
model provides a better accuracy for modeling of thermoelectric