Floating suction and head

[kennybaker2014]

Can anyone lead me in the right direction to more fully understand floating head and suction?
thanks in advance

[UmmScott]

Floating suction typically applies to parallel systems using more than 1 compressor.

Floating suction means to slowly raise the suction pressure of the whole system to a point as long as the coldest circuit on that system is able to maintain its setpoint.

Theres a whole lot more to it, better to put this question in the pro refrigeration forum

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[kennybaker2014]

Thanks ummScott

[crazzycajun]

https://hvac-talk.com/vbb/showthread...-Head-Pressure
See if this helps

[bunny]

Compression Ratio is the ratio of discharge pressure divided by suction pressure. Those pressures need to be converted to absolute pressure before making the calculation.

The lower the compression ratio, the greater the compressor capacity.

The compression ratio can be reduced by (1) lowering the discharge pressure, (2) raising the suction pressure, or (3) both.

This is the entire basis for floating head pressure and suction pressure....to maximize compressor efficiency and reduce electrical consumption.

[kennybaker2014]

https://hvac-talk.com/vbb/showthread...-Head-Pressure
See if this helps

Thanks crazzycajun. That did help. I appreciate the link