HOW IT WORKS

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Thermal Gen- How it works

The sun heats everything on the earth down to approximately 300 feet below the surface. At about 8 feet the temperature in the earth averages about 55 degrees. This constant temperature is retained in the earth’s soil and water. A water to water ground source heat pump is normally used to efficiently extract this stored heat out of the ground and pump it into a space/home or extract heat out of the space home and pump it into the ground. In both cases when heat is removed from the ground or a home, the area where the heat is removed is left cold.

We store a large amount of heat in water from the ground in recuperating tanks and temper this water to about 68 degrees. This thermal mass then becomes a medium temperature thermal battery, so to speak. Several different methods can be used to temper these recuperating tanks efficiently. For example; rejected/extracted heat from space/home air when air conditioning, rejected shower water, outside ambient air, hot water solar panels, the ocean, a pond, the ground or any combination of heat rejection and heat retention sources.

Two water to water heat pumps are used to work from this maintained temperature of 68 degrees. One heat pump prioritizes heating water in the hot tank and rejects cold to the cold tank and recuperating tanks as needed. The second heat pump prioritizes cooling water in the cold tank and rejects heat to the hot tank and recuperating tanks as needed. The heat pumps do not have to work very hard to generate the different temperatures, because the temperatures are so close. They are extremely efficient, especially when normally rejected heat/cold is reused; their efficiency ranges from 500 percent and up.

While tank temperatures are maintained as required by the systems computer (PLC), space comfort and electricity needs are being met.

The thermal gen uses this extremely efficient heat transfer technology to maintain approximately a 70 - 80 degree temperature differential in storage or buffer tanks. The temperature in the cold tank can range between 28 and 42 degrees, while the temperature in the hot tank can range between 102 and 110 degrees.

The cold tank can be used for space/home cooling needs and the hot tank can be used for space/home heating needs, simply by circulating water from these tanks through a furnace with a properly sized water coil.

The temperature differential existing between the two tanks also serves as stored energy to be used to generate electricity. This generated electricity provides power to the same space /home that is being heated or cooled (conditioned).

The electricity is generated by using a refrigerant (Freon) in an OPDC (Organic Pressure Driven Cycle) loop that expands with heat and condenses with cold. The pressure differential used in our loop to generate electricity ranges from 150 psig to 250 psig. By using a state of the art Power Verde Energy engine/turbine in our loop, the ThermalGen generates electricity with ease.