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Old 10-10-12, 08:20 AM   #9
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If you had an indirect return I would agree with your calculations. With a direct return flow, however, you will have short-circuiting of the system and all the flow will go through the shortest branch; to keep that from happening you would need to assume the system will operate as a series flow system.

You will develop cold spots overtime in parallel flow systems--of that there is no (cheap/easy) cure!
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