Category Archives for Vessels

Separation Enhancer

Certain refinements of the basic inlets and outlets to the vessel are usually used to facilitate the separation of liquid and vapor. Any of the entrance lines that are carrying liquid are usually turned downward. The vapor line leaving for … Continue reading

16. May 2018 by Jim
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Oil Pots

A small vessel frequently installed beneath the low-pressure receiver and other larger vessels is an oil pot whose purpose is to accumulate oil to facilitate periodic draining. Figure 10.17 shows oil pots with their typical connections, including the line from … Continue reading

16. May 2018 by Jim
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Thermosyphon Receiver

A small but important vessel is the thermosyphon receiver which is an integral part of that type of oil cooling concept for screw compressors. The procedure for selecting the size of the thermosyphon receiver is explained in Sec. 5.14 and … Continue reading

16. May 2018 by Jim
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Suction Line Accumulator

The vessel shown in Fig. 10.15 should normally not be necessary, and in newly designed and constructed systems it usually is not found. In a two-stage liquid recirculation system the low-pressure receiver should be designed to prevent liquid from reaching … Continue reading

16. May 2018 by Jim
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Surge Drum For A Flooded Evaporator

Flooded evaporators, first described in Sec. 6.7, are equipped with a surge drum at a level slightly above the evaporator coils. Either a horizontal or vertical surge drum is possible, as shown in Fig. 10.14, with the choice usually dependent … Continue reading

16. May 2018 by Jim
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Low-Pressure Receiver

This vessel is one that performs both the role of liquid/vapor separation and liquid storage. The dashed lines in Fig. 10.13 show five distinct liquid levels of interest. The level controller, whether it is a capacitance level sensor as shown … Continue reading

16. May 2018 by Jim
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Flash/Tank – Desuperheaters

The flash-tank/desuperheater is the vessel in a two-stage system operating at the intermediate pressure that provides removal of flash gas in direct cooling of liquid (Fig. 3.2) or subcooling liquid with a heat exchanger (Fig. 3.5). The other purpose of … Continue reading

16. May 2018 by Jim
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High-Pressure Receiver

The high-pressure receivers in small plants that operate on a seasonal schedule are typically sized to contain all the refrigerant existing in the system. During pump-down operation, the king valve (Fig. 10.11) in the liquid line from the receiver is … Continue reading

16. May 2018 by Jim
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Liquid/Vapor Separation – Horizontal Vessel

Both horizontal and vertical vessels are widely used, and it is often the physical characteristics of the machine room that has a major influence on the choice of orientation. Many designers prefer a vertical vessel for a mechanically pumped recirculation … Continue reading

16. May 2018 by Jim
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Liquid/Vapor Separation – Vertical Vessel

Along with providing storage for liquid, a chief function of most vessels used in industrial refrigeration is to separate liquid from vapor to assure that the vapor reaching the compressor is free of significant amounts of liquid. The vessel should … Continue reading

16. May 2018 by Jim
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