Campshower is another design from the mind of Mark Hinkle. As is the case for his Centipede project, this page was only partially-captured by the Wayback Machine.
This is a concept for a deluxe campshower I have. This was going to be for the Civic Guard, a Society for Creative Anachronism group. Unfortunately no one had the cash to pitch in for its components.
Mark Hinkle
Some calculations for it follow :
Assume :
15 persons
10 minute showers
12V 200 Amp-hour battery
50 gallon water tank
2.5 gal/min pump
5 gal water per shower
Total shower length per day = 10×15 = 150 minutes per day
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
A full water tank lasts (under continuous usage) 50gal / 2.5gpm = 20 minutes continuous (under intermittent 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 recommend 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.
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. shower,
40gal@3gpm~=13min. shower,
50gal@2gpm~=25min. shower,
40gal@2gpm~=20min. shower
Shower cannot be continuous! These times are the cumulative length of all showers.
PAVILION : plasticized canvas, 5ft.x5ft base
ASTROTURF : toolbox liner is also acceptable
PALLET : modified so feet don’t fall between cracks
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