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Show MODERN AIR CONDITIONING ""- If - i k : :f -4,. &- t W -v ! by Orville Gunther Part V Have you ever pumped up a tire with a hand pump ? If you have you will undoubtedly have observed that the pump hose became be-came warm in the process. Conversely, Con-versely, if you have ever opened the valve stem on a tire with full air pressure you will have observed observ-ed that the stem became cool as the air escaped. This is due to the fact that whenever a gas, such as air, is compressed it gives off heat and when it expands it absorbs heat. Your refrigerator works on this principle. Inside your refrigerator is a pump which compresses a gas until un-til it gives off heat, then the gas flows to the freezing compartment where the pressure is released and it absorbes heat or cools. Just place your hand in the freezing compartment and you will find it very cold, then place it upon the coils on the outside at the back of the refrigerator and you will find them veiy warm, sometimes hot enough to be uncomfortable. Now imagine your refrigerator installed on the outside wall of your house with the coils at the rear, outside the house. You now have a summer air conditioner with the freezing compartment on the inside of the house and the heating coil on the outside heating the air outside. Turn it around for winter and the freezing compartment will absoi'b heat from the outside air and the coil at the rear will heat the air inside the house. This is called the "heat pump cycle." We call this unit that does this the General Electric Weath-ertron. Weath-ertron. This is the newest in year around air conditioning. With it there is no need for windows that open. Design of the house can be simplified. At the touch of a thermostat ther-mostat you can have "Indian Summer" Sum-mer" the year around all with no fuel, just kilowatts that come over the power company lines. |