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Myrd · 07-18-2002, 09:16 PM

Here is a link to a resource for liquid weights and densities. This page shows the effective increase in work required by a pump to move a liquid.

Specific gravity chart

A normal impeller pump is limited in its ability to move liquid beyond a certain head pressure. As specific gravity increases losses in the impeller due to 'Slip' cause the effective losses to entropy to compound. Water at a specific gravity of 1 is roughly 16 times easier to move. If you were to replace the impeller type pump with a positive displacement pump you would gain a higher head capacity. But this would still not allow you to achieve the same efective cooling as with a chilled water medium.

07-18-2002, 09:16 PM	#82
Myrd Cooling Neophyte Join Date: Jul 2002 Location: NJ Posts: 4	Here is a link to a resource for liquid weights and densities. This page shows the effective increase in work required by a pump to move a liquid. Specific gravity chart A normal impeller pump is limited in its ability to move liquid beyond a certain head pressure. As specific gravity increases losses in the impeller due to 'Slip' cause the effective losses to entropy to compound. Water at a specific gravity of 1 is roughly 16 times easier to move. If you were to replace the impeller type pump with a positive displacement pump you would gain a higher head capacity. But this would still not allow you to achieve the same efective cooling as with a chilled water medium.