These heaters are sometimes filled with oil, which functions as an effective heat reservoir.

The substances and states of the two heat reservoirs should be chosen so that they are not in thermal equilibrium with one another.

Sea water has an important influence on the world's climate, with the oceans acting as a large heat reservoir.

These important relations can also be obtained without the inclusion of the heat reservoirs.

The energy for the work comes from the heat reservoir that keeps the temperature constant.

The ceramic pot, or 'crock', acts as both a cooking container and a heat reservoir.

It would probably act as a heat reservoir for a few more hours but there was little doubt that toward morning it would be very cold.

It may be an efficient heat reservoir.

After absorption, it will eventually become part of the ocean's heat reservoir.

The system may be in contact with a large heat reservoir in order to thermostat the system of interest.