Post by papaof2 on Nov 18, 2023 4:26:07 GMT -6
theelectronicgoldmine.com/products/g20108
ends midnite 21 Nov.
Rule IL280PG 12VDC at 4.5Amp inline submersible pump $9.95 + tax + ship Limit of 4 per order. These are well built pumps so they are heavy. $9.95 + shipping still beats anything you're likely to find elsewhere in a good quality pump.
280 gallons per hour of fresh or sea water at 14 PSI.
Head is 32ft, outlet hose bib for 0.5" internal diameter hoses.
Size is 6.5" long x 1.5" diameter.
Has a 3ft waterproof cable terminating in a special waterproof male 2 pin connector. Brand new.
280GPH is 4.67GPM. That will easily handle one EPA compliant 2.5GPM showerhead.
Submersible pump means you can add the output hose and drop the pump in a barrel or a 275 gallon tote or a rain cistern or a pond. Ideal installation would be in a floating collar with the intake aimed down so the intake is from about 2 inches below the water's surface which means anything floating in the water won't be ingested and clog the pump.
Just remember that properly connecting multiple showerheads to a common source is MUCH more complicated than "1/2" pipe for as many 1/2" feed showerheads as I want to use". Water flow does NOT work like that unless only one showerhead is in use at a time.
32 ft of head just does get water at basement level (55 gal barrel or other storage in the basement) up to a showerhead on the second floor of typical construction. Assume 10 feet from basement floor to floor of main level and 9 feet to floor of second level + 7 feet to showerhead = 26 feet and pump is rated for 32 feet. EPA compliant shower heads typically work OK starting around 8-9PSI so this pump should be fine feeding showerheads in basement and main level but might have less flow on the second floor. If you add flow restrictors to all showerheads limiting the flow to 90% of normal: 2.16GPM, one pump could supply two showerheads at the same time.
Power needed is basically proportional to load - raising 280 gallons up 5 feet will not require 4.5 amps for an hour - probably closer to 2 amps for that hour. As always, for most accurate results you'd need to do some testing in the place and under the conditions you want to move water. Remember that a 100 watt solar panel delivers about 5 amps under full sun during the optimum sun hours of of 2hours before and after solar noon (NOT clock noon - it depends on where you are in your time zone and times are one hour later under DST). A 100 watt panel with a 10 amp PWM charge controller could run the pump at full load during the peak sun hours and keep a 35AH or larger LiFePO4 battery charged for several hours of use at other times. If you can put a water storage tank 10 feet above a showerhead it would provide a little over 4psi which may not be adequate for more than a dribble. If the top of the water in the storage container is 20 feet above the showerhead, you'd have 8.67psi which would probably be OK. On the other hand, a dribble of sun-warmed water might be greatly preferred to a torrent of cold water ;-)
Remember that this is talking about being prepared for something less than normal, not being in the best hotel in town ;-) Having a working shower in SHTF would put you in the richest 1% when other people are bathing in #2 washtubs (still have one of those, too ;-) You might consider a modification for bathing kids: 30 or 55 gallon barrel without lid and filled to appropriate level with warm water, Dip kid in to get them wet, then wash hair and wash body, then use pump to power shower for rinsing. Quick way to get multiple kids through bath time ;-)
You might also want to consider having an adjustable flow control valve on each showerhead and teach people to get hair wet, reduce flow, shampoo hair, flow back up for rinse, reduce flow, wring hair, flow up to wet body, reduce flow, soap body, flow back up for rinsing, water off. If you could find or build coin-operated timers, you could have the users pay for warm water but the timers should be usage based (gallons) instead of time (unless you have people standing in line waiting to shower). I have the bits to build a metered flow device that could display gallons used and gallons remaining. Just making it from things left over from a project that tracked the water used to irrigate a small raised bed garden. No, I never throw re-usable electronics bits away.
ends midnite 21 Nov.
Rule IL280PG 12VDC at 4.5Amp inline submersible pump $9.95 + tax + ship Limit of 4 per order. These are well built pumps so they are heavy. $9.95 + shipping still beats anything you're likely to find elsewhere in a good quality pump.
280 gallons per hour of fresh or sea water at 14 PSI.
Head is 32ft, outlet hose bib for 0.5" internal diameter hoses.
Size is 6.5" long x 1.5" diameter.
Has a 3ft waterproof cable terminating in a special waterproof male 2 pin connector. Brand new.
280GPH is 4.67GPM. That will easily handle one EPA compliant 2.5GPM showerhead.
Submersible pump means you can add the output hose and drop the pump in a barrel or a 275 gallon tote or a rain cistern or a pond. Ideal installation would be in a floating collar with the intake aimed down so the intake is from about 2 inches below the water's surface which means anything floating in the water won't be ingested and clog the pump.
Just remember that properly connecting multiple showerheads to a common source is MUCH more complicated than "1/2" pipe for as many 1/2" feed showerheads as I want to use". Water flow does NOT work like that unless only one showerhead is in use at a time.
32 ft of head just does get water at basement level (55 gal barrel or other storage in the basement) up to a showerhead on the second floor of typical construction. Assume 10 feet from basement floor to floor of main level and 9 feet to floor of second level + 7 feet to showerhead = 26 feet and pump is rated for 32 feet. EPA compliant shower heads typically work OK starting around 8-9PSI so this pump should be fine feeding showerheads in basement and main level but might have less flow on the second floor. If you add flow restrictors to all showerheads limiting the flow to 90% of normal: 2.16GPM, one pump could supply two showerheads at the same time.
Power needed is basically proportional to load - raising 280 gallons up 5 feet will not require 4.5 amps for an hour - probably closer to 2 amps for that hour. As always, for most accurate results you'd need to do some testing in the place and under the conditions you want to move water. Remember that a 100 watt solar panel delivers about 5 amps under full sun during the optimum sun hours of of 2hours before and after solar noon (NOT clock noon - it depends on where you are in your time zone and times are one hour later under DST). A 100 watt panel with a 10 amp PWM charge controller could run the pump at full load during the peak sun hours and keep a 35AH or larger LiFePO4 battery charged for several hours of use at other times. If you can put a water storage tank 10 feet above a showerhead it would provide a little over 4psi which may not be adequate for more than a dribble. If the top of the water in the storage container is 20 feet above the showerhead, you'd have 8.67psi which would probably be OK. On the other hand, a dribble of sun-warmed water might be greatly preferred to a torrent of cold water ;-)
Remember that this is talking about being prepared for something less than normal, not being in the best hotel in town ;-) Having a working shower in SHTF would put you in the richest 1% when other people are bathing in #2 washtubs (still have one of those, too ;-) You might consider a modification for bathing kids: 30 or 55 gallon barrel without lid and filled to appropriate level with warm water, Dip kid in to get them wet, then wash hair and wash body, then use pump to power shower for rinsing. Quick way to get multiple kids through bath time ;-)
You might also want to consider having an adjustable flow control valve on each showerhead and teach people to get hair wet, reduce flow, shampoo hair, flow back up for rinse, reduce flow, wring hair, flow up to wet body, reduce flow, soap body, flow back up for rinsing, water off. If you could find or build coin-operated timers, you could have the users pay for warm water but the timers should be usage based (gallons) instead of time (unless you have people standing in line waiting to shower). I have the bits to build a metered flow device that could display gallons used and gallons remaining. Just making it from things left over from a project that tracked the water used to irrigate a small raised bed garden. No, I never throw re-usable electronics bits away.