What is the use of chiller in rotary evaporator?
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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.
What is the functional principle of a rotary evaporator?
The rotary evaporator principle is that the boiling points of liquids reduces on decreasing their pressure, allowing solvents to be vaporized at much lower temperatures than their boiling points at normal pressure.
What is the purpose of using a reduced pressure in a rotary evaporator?
The reduced pressure in the apparatus causes the solvent to boil at a lower temperature than normal (see vacuum distillation), and rotating the flask increases the liquid’s surface area and thus the rate of evaporation.
Does the rotary evaporator increase pressure?
One of the main reasons to use a rotovap is to reduce the boiling temperature of the solvent by using vacuum to lower the pressure within the system. So it makes sense that increasing the vacuum and lowering the pressure further should help. This is true, to a point.
How does a chiller condenser work?
An air-cooled condenser uses ambient air to cool and condense the hot refrigerant gas back down to a liquid. It can be located inside the chiller or can be remotely located outside, but ultimately it rejects the heat from the chiller to the air.
Can rotary evaporator be used for distillation?
A rotary evaporator is a specially designed instrument for the evapora- tion of solvent (single-stage or straight distillation) under vacuum. The evaporator consists of a heating bath with a rotating flask, in which the liquid is distributed as a thin film over the hot wall surfaces and can evaporate easily.
How do you increase the efficiency of a rotary evaporator?
Thankfully, there are several ways to make your rotary evaporator process faster:
- Increasing the rotation speed.
- Increasing the vessel size.
- Increasing the bath temperature.
- Increasing the vacuum level.