Sorry I could not find much data but here is what I found Here is some of my data, take with a grain of sault.
Well pump ½ hp drawdown 60 feet, start surge 1500 Watts running watts 500 watts runtime 25 seconds 40-gallon bladder tank. 40 to 60 PSI. Two people in the house about 60 years old, One shower the pump ran 4 or sometimes 5 cycles of the water pump about 30 seconds on and 30 off. This means they ran water for about 4 or 5 minutes per shower. When no one was home the electric water 50-gallon energy star cycled about 4 times per day, at 4500 watts for about 10 min, just the non use water heater used 2.5 kWh/day when it was not in use. Another example Family of three, heat pump water heater, energy conscious, 3 showers per day energy use was 1500 Watt hr/day. If HP had COP of 4 then equivalent to 6,000 Wh/d if it had been electric. This means the family was using 40 gallons /day for 3 people or about 13.5 gallons per person per day. Garage door opener 700 watts running very small surge, 2 car garage door, typically 4 cycles per day, run time 12 seconds open and 12 seconds close. Refrigerator energy star about 50% duty cycle 100 watts on, or 1200 Wh/d Family of two 60-year-olds. I have much more data but I could not find. On Thu, Mar 15, 2018 at 8:42 AM, frenergy <frene...@psln.com> wrote: > Drake, > > It would help to know....is this duplex already built? and > considering where you live, is a woodstove being considered for space heat? > > Bill > > Feather River Solar Electric > Bill Battagin, Owner > 4291 Nelson St. > Taylorsville, CA 95983530.284.7849 <(530)%20284-7849> > CA Lic 874049www.frenergy.net > > On 3/14/2018 4:19 PM, drake.chamber...@redwoodalliance.org wrote: > > Hello Wrenches, > > Is there a good way to estimate the power that will be consumed for > electric water per person per day? We are estimating the amount of power > that will be used by an all electric duplex, and the water heater amount > seems high. The current model we have claims 3493 kWh/ year per 26 gallon > tank will be consumed. With the two units, that would add up to 6986 kWh / > year for hot water, pushing the system size to humongous for a 1300 ft sq > building. > > Does that seem high? There will be a maximum of 2 people per unit. > > The owner is considering going to 115 V units with a 15 gallon tanks. I > think the smaller tank would help, but it would seem that the amount of hot > water consumed would be the main issue. > > How can we get a good estimate for a per person energy usage for electric > hot water? Any other suggestions are welcome. > > Thank you, > > Drake > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette:www.re-wrenches.org/etiquette.htm > > Check out or update participant bios:www.members.re-wrenches.org > > > -- > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link> > <#m_-7068633328265616310_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > >
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