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Forum: RIBnet North America

12 June 2015, 00:24

Replies: 23

air temperature in correlation to air pressure

Views: 6,379

Posted By Poly

A bit of googling suggests you are referring to...

A bit of googling suggests you are referring to ISO 9650-1 (2005) s. 6.8.8.1 ? (and the same section of part 2)

In which case this line "The test is only valid if the temperature variation is <= 3...

Forum: RIBnet North America

11 June 2015, 14:28

Replies: 23

air temperature in correlation to air pressure

Views: 6,379

Posted By Poly

Its the temperature of the AIR in the tubes not...

Its the temperature of the AIR in the tubes not the surface of the fabric that matters. Especially since the tops of the tubes usually become very hot but the sea water cooled bottom does not. If...

Forum: RIBnet North America

11 June 2015, 10:27

Replies: 23

air temperature in correlation to air pressure

Views: 6,379

Posted By Poly

Nah, P2 = P1 T2 / T1 T has to be in...

Nah,

P2 = P1 T2 / T1

T has to be in Kelvin.

(for 100F falling to 80F...)

P2 = P1 * 300/311

Forum: RIBnet North America

10 June 2015, 07:18

Replies: 23

air temperature in correlation to air pressure

Views: 6,379

Posted By Poly

Charles law actually, but it doesn't explain what...

Charles law actually, but it doesn't explain what people see with tubes. The change in absolute pressure from Charles law alone in going 80 to 100F is tiny. Other issues are at play... Moisture...

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