SP Scientific ULTRA-COOL, Руководство оператора

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Installation and Startup Ultra-Cool
6 Rev 008, 01/12
© SP Scientific 2012
General Properties of a Process Fluid
Expansion/Contraction
It is important to note that some fluids expand as much as 14% from +25°C to
+125°C. Do not confuse contraction of the fluid for fluid losses.
Fluid Creep
Fluids will find any non-sealed connection.
Dissolved Gases
At room temperature the fluid contains dissolved gas. As the fluid temperature is
increased the amount of dissolved gas decreases dramatically, causing excess gas to
be released from the fluid. This release of gas should not be mistaken for boiling of
the fluid.
Water Solubility
Process fluids are water-soluble. After long periods of operation at low temperatures
water will mix with the fluid and decrease the performance of the system. To remove
the excess water, warm the fluid to room temperature and pump the fluid through a
molecular sieve or desiccant material. Alternately, simply run the system at
temperatures over 100°C, this will boil off any water present in the fluid (Only applies
to the systems that are capable of temperatures over 100°C).
Low surface tension and high vapor pressure
This means that the fluid evaporates very easily and that any improperly sealed joints
will leak.