  We study thermodynamic manifestations of the chiral anomaly in disordered
Weyl semimetals. We focus, in particular, on the effect which we call
'adiabatic dechiralization,' the phenomenon in which a change in temperature
and/or an absorption or release of heat results from applying parallel electric
and magnetic fields that change the imbalance of quasiparticles with different
chiralities (at different Weyl nodes). This effect is similar to that of
adiabatic demagnetization, which is commonly used as a method of
low-temperature refrigeration. We describe this phenomenon quantitatively and
discuss experimental conditions favorable for its observation. A related
phenomenon, which we analyze and which is readily observable in experiments, is
the dependency of the heat capacity of a Weyl semimetal on parallel electric
and magnetic fields.
