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BEopt calculates hot water consumption based on the number of bedrooms using the Building America assumptions (http://energy.gov/sites/prod/files/2014/03/f13/house_simulation_protocols_2014.pdf, tables 12 and 38). These tables list gpm assumptions and gallons/day assumptions but don't indicate what the relationship is between the two. I don't think it's linear since, for example, you fill your big pot for boiling pasta with the same amount of water regardless of the faucet flow rate. But the BEopt inputs are gallons/day of hot water for sinks, showers, and baths, so I'm looking for a way to get there from gpm. How do you do it?

BEopt calculates hot water consumption based on the number of bedrooms using the Building America assumptions (http://energy.gov/sites/prod/files/2014/03/f13/house_simulation_protocols_2014.pdf, (house simulation protocols, tables 12 and 38). These tables list gpm assumptions and gallons/day assumptions but don't indicate what the relationship is between the two. I don't think it's linear since, for example, you fill your big pot for boiling pasta with the same amount of water regardless of the faucet flow rate. But the BEopt inputs are gallons/day of hot water for sinks, showers, and baths, so I'm looking for a way to get there from gpm. How do you do it?

BEopt calculates hot water consumption based on the number of bedrooms using the Building America assumptions (house simulation protocols, tables 12 and 38). These tables list gpm assumptions and gallons/day assumptions but don't indicate what the relationship is between the two. I don't think it's linear since, for example, you fill your big pot for boiling pasta with the same amount of water regardless of the faucet flow rate. But the BEopt inputs are gallons/day of hot water for sinks, showers, and baths, so I'm looking for a way to get there from gpm. How do you do it?

BEopt calculates hot water consumption based on the number of bedrooms using the Building America assumptions (house simulation protocols, tables 12 and 38). These tables list gpm assumptions and gallons/day assumptions but don't indicate what the relationship is between the two. I don't think it's linear since, for example, you fill your big pot for boiling pasta with the same amount of water regardless of the faucet flow rate. But the BEopt inputs are gallons/day of hot water for sinks, showers, and baths, so I'm looking for a way to get there from gpm. How do you do it?