  Solid-state cooling based on i-caloric effects is considered the most
promising alternative to replace the conventional vapor-compression
refrigeration systems. It is possible to define an i-caloric effect as a
thermal response registered in a material upon the application of an external
field, characterized by an adiabatic temperature change ({\Delta}T_S) or an
isothermal entropy change ({\Delta}S_T). Depending on the nature of the
external field (magnetic field, electric field or stress field), the i-caloric
effects can be categorized as magnetocaloric effect, electrocaloric effect, and
mechanocaloric effect. We can still subdivide mechanocaloric effect in:
elastocaloric effect, driven by uniaxial stress; barocaloric effect, driven by
isotropic stress (pressure); and torsiocaloric effect, driven by a torque in a
prismatic bar, causing a pure shear stress of torsion. The study of i-caloric
effects dates from the beginning of 19th century. Nevertheless, due to the
independent development of investigations on each effect, there are no
stablished standards regarding terminology or results evaluation up to now,
making the understanding quite challenging for the community. In this context,
we present a proposal for normalization of i-caloric effects, considering
different aspects, such as nomenclature, thermodynamics and figures of merit.
