The Time for Water Cooling is Now

Modern electric motors are remarkable machines yielding efficiencies above 90-95%. Yet in the large plant with many motors, the 5+% loss constitutes an appreciable amount of waste heat that must be removed and rejected to the surrounding atmosphere. This heat may be directly ducted outside as hot air, but often it is removed from the interior of the plant though the plant’s air conditioning system; a very expensive way to remove waste heat.

Water cooling of the electric motor provides a far more efficient means for the collection and removal of the waste heat. If the plant requires hot water, or generates steam, the warm water discharge from the Stainless Steel Water Cooled motor can be used directly and will afford huge energy savings. In fact, the 5% loss can now be considered as free pre-heat for process water heaters or steam generators. The stainless steel housing, water jacket and endbells will not rust or impart corrosion debris to the cooling water, assuring water chemistry and purity are unchanged.

Uniform and lower temperatures of the water-cooled motor winding and bearings substantially increases the motor’s service life and reduces bearing maintenance requirements. Remote motor condition monitoring is provided for via internal bearing and winding RTD’s, whose connection leads terminate in an instrumentation enclosure separate from the larger power connection enclosure. Bearings are re-greased from external fittings or continuously supplied via automatic re-greasers. Excess and waste grease is efficiently removed from the bearings and collected in easily accessible waste grease reservoirs for periodic removal.

Substantial noise reduction is an additional benefit of the water cooled motor design. Elimination of the high speed cooling fans and blowers required on air cooled motors renders the water-cooled motor comparatively silent in operation.