heat loss from non-insulated pipeline - CR4 Discussion Thread

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ashishtheone Active Contributor Join Date: Jan 2008 Posts: 13	heat loss from non-insulated pipeline 08/05/2008 8:24 AM
	what r probable ways and equations utilized to calculate heat loss from non-insulated pipe. Data -hydrocarbon in pipe is at around 300deg C its temp is measured at thermocouple at bottom of vessel where pipe originates. -avg velocity and temp of air cud be assumed -pipe dimensions and MOC known if specific eqations used in industry are provided it will be very helpfull. __________________ The measure of success is not whether you have a tough problem to deal with, but whether it's the same problem you had last year." -- John Foster Dulles
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	Pathfinder Tags: convective coeffecient for air

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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: heat loss from non-insulated pipeline 08/05/2008 8:53 AM
	Perry - "The Chemical Engineer's Handbook", any edition. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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ashishtheone Active Contributor Join Date: Jan 2008 Posts: 13	#2 Re: heat loss from non-insulated pipeline 08/06/2008 7:48 AM
	i am having two options either heat flow by conduction for which thermocouples error and very low delta t between liquid and pipe surface seems to effect the calculation and if i consider only convective heat tranfer from pipe surface to air determination of coeffcnt poses problem.... n m not able to find perfect eqation.... __________________ The measure of success is not whether you have a tough problem to deal with, but whether it's the same problem you had last year." -- John Foster Dulles
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