h a l f b a k e r y
If you need to ask, you can't afford it.
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
Simple device that hangs in your shower. You program
your water, sewer, and fuel rate and the flow rate of
your shower head, then it sits around and
listens. When its tiny microphone hears the shower
running it starts counting. Every time you use $0.25
of water and heat it makes
The point, of course, is to try to keep those that spend a
bit too long in the shower on task. I just ran the
and it costs $2 in my area for a 20 minute shower.
the number of people in a house, once a day, that adds
1 ccf = 748 gallons
1 therm = 100,000 Btu
energy to heat 1 gallon of water from 50F to 100F:
1 gallon = 8.35 lb
1 BTU = energy to heat one pound of water one degree
8.35 lb x 50 F / .75 (efficiency)= 557 Btu
total cost: $0.0247/gallon
standard shower head: 4gpm (can be as high as 8gpm or
low as 1gpm)
cost for a minute of shower: $0.099
cost for a 20 minute shower: $1.98
[Dub, Aug 16 2009]
Yours is cooler in that it uses a mic, but the method for calibrating the device is described here [Dub, Aug 16 2009]
||One could use such a device to either provide water at a given flow rate with the variable being time, or provide water for a given time and adjust the flow rate to match.
||Instead of a quarter falling it could provide the sound of a snail darter flopping on the hot sand, dying because you used up the water it needed. You did. That snail darter is looking at you. And just so you could wash your legs, which were still pretty clean and did not need it.
||Poor poor snail darter. You bastards! Also, great idea.
||It's amazing how many pennies "free" things use up. [+]
||A variable sound effect is required, for those one minute showers that I take several times a day in the summer using only cold water - so a penny counter.
||And I want a water-activated animated snail darter that actually flops around my feet.
||The snail darter animation would freak guests out tho.. Next thing you know you got someone over who needs to take a shower and bam! They're freaking out and running around the house all nake....