UL Field Inspections. Yesterday we were greeted at the front door by our UL Inspector for an unannounced field inspectionâ¦surprise! At another facility there might be a cry for alarm, but at Coast Label Company there was no mad scramble, no rush to hide this, or go find that. We just sat him down and asked what he was checking today.
Jet pumps create suction in a rather novel way. The pump is powered by an electric motor that drives an impeller, or centrifugal pump. The impeller moves water, called drive water, from the well through a narrow orifice, or jet, mounted in the housing in front of the impeller.
Some residential and commercial energy consumers may be able to benefit from a heating system that stores electric heat during nighttime hours when rates are lower. This is called an electric thermal storage heater. Heat pumps work by using refrigerant to absorb heat from the outside air. Electricity is used to move the refrigerant and transfer heat from one space from another. Depending on the type of heat pump, they may pull heat from the air or the ground. The technology works the same way air conditioners work and can be used to cool your home very efficiently in the summer.