In 1856 he recognized the principle of the heat pump while conducting experiments on the use of water vapor 's latent heat for the evaporation of salt brine .
A common method of obtaining salt in Austria is also due to Peter Rittinger .
In 1856 Peter Rittinger recognized the principle of the heat pump while conducting experiments on the use of water vapor 's latent heat for the evaporation of salt brine .
A common method of obtaining salt in Austria is also due to Peter Rittinger .