Chillers and Rotary Evaporators work hand in hand. It is true that a rotary evaporator does not require a chiller, but for temperature accuracy and convenience purposes, a chiller provides an effective and cost-efficient cooling option. Sometimes tap water is used for cooling purposes, but the stability required for sensitive lab samples often makes the use of tap water chilling not viable.

What does a Chiller do for a Rotovap?

In the simplest of explanations, Rotovaps require cooling and ideally a recirculating chiller supplies that cooling. A chiller is used to ensure that the rotovap has sufficient cooling at the precise temperature. For the solvent to vaporize properly in the rotary evaporator, cooling must be added because during evaporation, the solvent evaporated is warm. Typically, a chiller will pump cool fluid (typically water or a water/glycol mixture) to the process to remove the heat and the warm fluid returns to the chiller.

How Does a Chiller Work

Firstly let’s talk about how a chiller works. Before operate the lab water chiller, users need to inject water into the chiller, then high speed motor drives lab water chiller impeller to rotate in a high speed, meanwhile, the water in impeller will rotate at the same time and discharge under the function of centrifuge force, and form a vacuum state around the rotary axis.

When the lab water chiller is fulled with water, the impeller generate centrifugal force. Why the central pressure of impeller is reduced? Because the water in impeller channel swing towards all around and flow into pump shell under the function of centrifugal force, generally the pressure is lower than air inlet hose pressure, and water flow into impeller under the pressure difference, and in this way to provide water continuously.

That is the basic principle of how a chiller works. Then we are going to tell you what should be noticed when operating a lab water chiller.

1.Room temperature and humidity. The normal working room temperature of lab water chiller ≤25℃, humidity≤60%.

2.Movement of lab water chiller. Please avoid inclining the lab water chiller in case of working medium flow into other components and damage the machine.

3.Ventilate and dust prevention. Place the lab water chiller in ventilated place and keep it out of the sun.

4.Working medium. Use clean water or other regulated medium as working medium.

Cooling lab water chiller is the essential partner for rotary evaporator and glass reactor, for other unmentioned questions, please contact our technical staffs for assistance.

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