Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
(OP)
This question pertains to a oonce-through condenser cooling water system, having 2*50% CW pumps/unit. The pumps are designed for low water level at the intake.The pumps supply sea water having a tidal variation of about 5m.
At high water level, the system static head requirement is almost nil ie the system head requirement is for dynamic head only.
In the event of only single pump operating for high tide level case, the pump Q-H curve terminates above the system curve ie the pump curve does not intersect the system curve. Though the gap is small, it remains.
Request your expert views on how the pump (single point operation)and system behave at high tide level situation.
Regards,
S S Phogat
At high water level, the system static head requirement is almost nil ie the system head requirement is for dynamic head only.
In the event of only single pump operating for high tide level case, the pump Q-H curve terminates above the system curve ie the pump curve does not intersect the system curve. Though the gap is small, it remains.
Request your expert views on how the pump (single point operation)and system behave at high tide level situation.
Regards,
S S Phogat





RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Try this post whicch has some good links and websites which might help
http://www.eng-tips.com/viewthread.cfm?qid=343897
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Independent events are seldomly independent.
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Was it not you that mentioned it? --- "(control valve etc)"
Independent events are seldomly independent.
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Independent events are seldomly independent.
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Just trying to make sure ssphogat is on the same page.
Independent events are seldomly independent.
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
Valuable advice from a professor many years ago: First, design for graceful failure. Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs. Only then can practicality and economics be properly considered.
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
RE: Condenser cooling water pump, system Q-H curve vs Pump Q-H curve
CCfowler - I'll try and remember that quote - very useful.
Ssphogat - how about a response or some more data - say pump curve and system curve...
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way