Two major factors in determining the temperature rise of an electric furnace are?

The two major factors in determining the temperature rise of an electric furnace are the furnace kilowatt (KW) input and the cubic feet per minute (CFM) airflow.

Furnace KW refers to the amount of electrical power consumed by the heating elements in the furnace. The higher the KW, the more thermal energy is generated, which increases the temperature of the air being heated. This is critical because the heat output directly affects how much the temperature of the air can rise before it exits the furnace.

CFM measures the volume of air that flows through the furnace. The amount of airflow affects how efficiently the generated heat can be transferred to the air. If the CFM is too low, there may not be sufficient airflow to carry away all the heat produced, resulting in higher temperatures. Conversely, if the CFM is high, the air may not reach a high temperature because it doesn't spend enough time in contact with the heating elements.

Together, the KW capacity of the furnace and the airflow rate (CFM) determine how effectively the furnace heats the air and the resultant temperature rise. This relationship is essential for ensuring the furnace operates efficiently and meets the heating requirements of the space.