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Hot water pipe insulation

Hot water pipe insulation

Hot water pipe insulation

(OP)
I need some help on calculating the insulation specifications on a domestic hot water re-circulating system. I have 200 feet of 3/4 inch copper pipe. Can the insulation be specified based on a heat loss that is a percentage of the hot water used. In other words insulate so that perhaps 5% of the heat is lost in the pipes so the efficiency of the system would be 95%. The system circulates all day but the hot water is used sporatically. I would guess about 100 gallons of hot water are used daily.

Bill

RE: Hot water pipe insulation

calculate the heat loss in BTUH, based on system temperature, ambient conditions, and insulation characteristics. 3/4-inch copper pipe is generally provided with 1-inch thick fiberglass insulation.  Depends of course on application.  Then, calculate heat loss to determine appropriate recirculation rate etc.

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