(Actually the water company says its 453,000 gallons over 20 day period but the billing is based on 3 month period (1400 dollars!). Leak detected at water meter box 2 hours after new meter placed(dials spinning out of control-water turned off, plummer fixed).|||Jacy, you skipped the intermittent part of intermittent flow. While your numbers are correct, they assume that water is flowing 24 hrs/day. Take away 9 hours for work and commuting, another 7 for sleep, and that's 8 hours that the house is occupied. Assume running a dishwasher every 2 days, that's an average of 1/2 hr per day. Shower everyday, max 1/2 hr per day, washing hands and flushing toilet, realistically about 10 min/day. Total there's really only about 1.5 - 2 hours of water use daily.
Other calculations:
20days*24hrs/day*60min/hr=28,800 minutes if the meter was running continually. 453000/28800 = 15.7 gal/min
That's a gallon every 3.8 seconds! That's way more than standard household use, and it's continuous 24/7 for 20 days. Tell your utility company their equipment was defective and so best case they can't charge you, worst case they charge you the average of your previous bill.
453,000 gallons * (1ft^3/7.48gal) = 60651 ft^3 = 104,650,000 in^3
Area of 3/4" pipe = pi*.75^2/4 = .442in^2
Total linear flow = in^3 / in^2 = 104,650,000 / .442 = 237,000,000 in
Flow in Feet = 237,000,000 in / 12in/ft = 19,750,000 ft
Flow rate in Ft/Min = 19750000 / 28800 = 686 ft/min = 11ft/sec
That's really fast!|||If you live in an average size house with perhaps six
fixture units:(shower head, bathroom faucet, toilet, kitchen
faucet, clothes washer, and dishwasher), with each
providing and intermittent flow of 5 gals/min, then your
total water demand is: 6(5) = 30 gals/min.
This demand over a 20 day period will be:
30gal/min(60min/h)(24h/day)(20day) = 864,000 gal
Therefore, the water company is likely to be correct.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment