Campshower

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Some calculations for it are below:

ASSUME: 15 persons 
ASSUME: 10 minute showers 
ASSUME: 12V battery 
ASSUME: 200 Amp-hour battery 
ASSUME: 50 gallon water tank 
ASSUME: 2.5 gal/min pump 
ASSUME: person uses 5 gal water per shower 
 
total shower length per day = 10x15 = 150 minutes per day 
 
How long a fully charged battery will last: 
200/5.5 = 36.36 hours continuous usage 
36.36hr x 60min/hr = 2181.81 minutes 
2181.81min / 150min/day = 14.54 days @ 150 minutes per day 
 
How long a full water tank lasts: 
(under continuous usage) 
50gal / 2.5gpm = 20 minutes continuous 
(under intermittant usage) 
50gal / 5gpp = 10 people can shower before tank is dry 
NOTE: this assumes that the showerer will only have the water 
on long enough to get wet or to rinse. No water usage during 
lathering, scrubbing, or shaving. Also, no account is made 
for the hot water reserve. I reccomend that we have two water 
barrels so that one may be filled while another is used. 
 
Another note: 
It can get cold at Gulf War. Pipes may freeze. How do we prevent that? 
We could bury the hoses but will that work? Draining is not 
practical. Also, we could use some sort of insulation on the 
uprights.

here

The parts list goes something like this:

BATTERY: 
spec.: AGM???, 12V, ???AmpHr, $xxx 
 
BATTERY CHARGING REGULATOR: 
10A Schottkey Diode with heatsink if possible. 
 
WATERPUMP: 
12V DC, 6.0Amp current, 2.0-3.0gpm 
 
HOSE: 
garden or RV hose with large inner diameter. need something to prevent freezing. Bury? 
 
FAUCET: 
two valve 
 
SHOWERHEAD: 
low flow, high pressure 
 
WATER HEATER: 
gas, 6gal, no electric (spark or match ignite) 
 
STORAGE TANK: 
calculation:50gal@3gpm~=16min. long shower, 40gal@3gpm~=13min. long shower 
calculation:50gal@2gpm~=25min. long shower, 40gal@2gpm~=20min. long shower 
shower cannot be continuous! These times are the cumulative length of all showers. 
 
PAVILLION: 
plasticized canvas, 5ft.x5ft base, 
 
ASTROTURF: 
toolbox liner is also acceptable 
 
PALLET: 
modified so feet don't fall between cracks

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