The driving force of success is innovation 
Innovation does not mean following trends; it means setting them. Throughout its long history, Herborner Pumpen has been at the forefront of developing and refining pump technologies and different types of drives. Especially in regard to the constantly growing importance of energy savings, Herborner Pumpen has been setting milestones for years. Our own development department is extremely keen to experiment, which has resulted in sustainable, efficient, high-quality, practical results, especially in regard to energy efficiency.
Water cooled (C)-motors
Equipped with a cooling jacket, water cooled motors are characterised by their high energy efficiency and environmental friendliness. In use, these pumps work like heat exchangers.
Using water cooling, the motor can save and reuse up to 95% of the lost energy. Water is conducted around the motor through a special cooling jacket that surrounds the motor completely. The dissipating heat produced by the motor is thus collected and resupplied to the pumped water in the form of heat. In comparison with air cooled surfaces, water cooled surfaces have an approximately 100 times higher heat transfer coefficient. Water cooling thus optimally takes up the heat loss of the motor. This energy reuse principle allows considerable savings in heating costs. C-motors also aid in making heat exchangers smaller due to heat recovery and also reduce the heating of the machine room at your place of use. The optional version in IP 67 type of protection also permits use in rooms at risk of flooding.
C-motors: Reduction of the noise emissions
Water cooled motors run about 10 dB(A) more quietly than air cooled motors. This cuts the sound volume in half, making it one of the advantages of water cooled motors. The following diagram shows the reduction of the noise level of a water cooled motor in comparison to an air cooled motor.
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Energy savings due to "heat exchanger motor"
The following shows the possibilities of energy savings using water cooled motors. Due to heat recovery alone, EUR 200 to EUR 2,000 can be saved every year1
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* The calculation applies to the loss of the nominal power of the motor. The recovery factor is the percentage of motor loss power that is returned to the medium. For a bath water circulation pump with an air cooled motor, this amounts to 25% (0.25) of the motor loss power (transfer of the motor heat to the bath water through the motor shaft and motor flange). For a bath water circulation pump with a water cooled motor, this amounts to 95% (0.95) of the motor loss power (transfer of the motor heat to the bath water through the motor shaft, motor flange, and cooling water line in the motor housing).
Die Anwendungsgebiete der Kühlmantelmotoren
The areas of application of the cooling jacket motors are versatile: the following example illustrates the savings that can be realised using a cooling jacket motor as the driver of a bath water circulation pump. Bath water circulation pumps with water cooled motors are used to pump and filter bath water, fresh water, sea water, industrial water, and other liquids contaminated by coarse materials. According to the medium design, pumps with an integrated hair and fibre filter (UNIBAD XC) or as block pumps (UNIBLOCK GFC) are used. The cooling jacket motor convinces due to its low noise emissions, versatile usability, and a high degree of energy savings and cost efficiency, thus making a direct contribution to worldwide climate protection.
Einsparungen als Antrieb einer Badewasser-Umwälzpumpe
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* Nominal diameter pressure flange: DN 40 - DN 200
Do not hesitate to contact us! We will make you an individual offer for the optimum use of this future-looking drive concept in connection with our sophisticated pump technology.
1 Savings potential increases with motor size
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