  We generalize the theory of thermoelectrics to include coherent electron
systems under adiabatic ac driving, accounting for quantum pumping of charge
and heat as well as the associated work exchange between electron system and
driving potentials. We derive the relevant response coefficients in the
adiabatic regime and show that they obey Onsager reciprocity relations. We
analyze the consequences of our generalized thermoelectric framework for
quantum motors, generators, heat engines, and heat pumps, characterizing them
in terms of efficiencies and figures of merit.
