Sample Cooler

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A sample cooler is a small shell and coil heat exchanger. The sample to be cooled (or heated) flows
Through the tube side of the cooler. The cooling fluid, usually water, flows through the shell side of
The cooler. A sample cooler is used to cool a sample from a process stream. Because the process
Stream is usually hot water or steam, sample coolers are used to cool the sample.
You can read the "more Details" part to know more

What is sample cooler ?

A sample cooler is a small shell and coil heat exchanger. The sample to be cooled (or heated) flows through the tube side of the cooler.The cooling fluid, usually water, flows through the shell side of the cooler. A sample cooler is used to cool a sample from a process stream. Because the process stream is usually hot water or steam, sample coolers are used to cool the sample. When high accuracy is desired, the sample must be cooled to exactly 77°F. The cooled sample is then taken to a laboratory for analysis or, in some cases, piped to .in-line process instrumentation 

Sample cooler Installation:

For Sample cooler Installation, we must ensure the safety of the operator and the optimal performance of this equipment. The sample cooler must not be installed or used in any manner other than that which is specified in this manual.

Prior to installing, removing or maintaining  sample cooler, ensure that the equipment is isolated from all connecting piping, the equipment is de-pressurized, the contents have been drained and the equipment is cool.

If cooling water valves are installed, a relief valve or 3-way valve must be provided. Damage to the equipment may occur if a relief valve or 3-way valve is omitted.

  1. Support the Sample cooler by its bracket(s) (included with the cooler) using included nuts or by water lines only. Care should be taken to avoid any additional loading on either the tubes or the cooling water piping.
  2. The cooling water should be softened and free of chlorides. Any hardness in the cooling water will result in scale build-up on the coil and a loss of heat transfer capacity. Chlorides can cause pitting or stress corrosion in stainless steel. If no source of acceptable cooling water is available, consult Sentry for a recommendation. Sample Cooler 750-286 3
  3. Provide a globe (not gate) valve in the cooling water outlet line for throttling purposes. Valve size must be the same as the cooling water outlet connection.
  4. If isolation of the cooler is desired, provide a gate or ball valve (not globe) in the cooling water inlet line. Valve size must be the same as the cooling water inlet connection.
  5. Install a relief valve in the cooling water line between the cooler and the outlet or the inlet valve. This protects against excessive shell side pressure in the event of (a) a leak in the high pressure tubing, or (b) an operator turning on the hot sample flow with both cooling water isolation valves closed, thus boiling the coolant and pressurizing the shell. As an option, a 3-way valve can be used on the inlet. It should be oriented so that the shell is open to drain when the cooling water is shut off.
  6. A 90° bend or expansion loop must be provided in the hot sample line to the cooler. This allows the tubing to expand and contract with temperature changes without out inducing stress at the point where the tube is welded to the cooler head.
  7. Mount the cooler either vertically or horizontally (preferably vertical on high temperature lines).
  8. Installation of a sample flow control valve in the sample line after the cooler is recommended. The valve should be a multi-turn type to allow for more precise flow control. The valve should be specified in accordance with the operating pressure and temperature of the sample.
  9. Installation of a sample flow isolation valve in the sample line prior to the cooler is recommended. The valve should be specified in accordance with the operating pressure and temperature of the sample.