Description
The use of electrically heated patenting furnaces is described. Furnace design, electrical design, control of power input, power consumption, the calculation of cost, and trends in electric vs. gas heat are considered. Advantages of electric heat include simple operation, no pollution, accurate temperature control, no need for fuel storage, safety, and low power consumption. Disadvantages include slow heat transfer, maintenance of heater element supporting tubes, more floor space required, and higher capital cost for an electric furnace.
