The idea for using material phase change as a way to store energy is
one that has been around for a while. In some instances the
change of water from a liquid to a solid is used for cooling.
is made from liquid water at night during times of low cost
electricity. During the day air is blown over the ice and the
cold air generated is used for air conditioning. The "Comfort
Appliance" being developed here uses the phase change of wax from a
solid to a liquid or a liquid to a solid. When the wax melts
energy is stored which can later be dispersed.
Our goals are
to develop something that can absorb heat during hot summer days and
effectively cool a room using very little electricity, and also absorb
excess heat from a woodstove and disperse it later to maintain a more
comfortable room temperature.
The final result will be an appliance that can be easily retrofitted
into a house and provide nearly free air conditioning during the
summer, and temperature stabilization during the winter.