Dana,
Specifically, I was looking for the power consumption of a
propane-fired hot tub...interesting story about heating the water with the
motor's waste heat though.
Yes, I have several watthour meters also but the idea of going into a
store and (I'm sure asking first) measuring watts of various appliances is
great. Why didn't I think of that?!
Maybe the best test would be going into some of my neighbors' houses
and conducting the same test after all the other 'related' equipment is added
the a system, EG satellite dish, dvd, computer for streaming, etc. and get some
real world totals with the phantom load that goes with it (and to share with
my customer to convince him/her to use a switched plugstrip).
Thanks for all the other info for other loads, very helpful.
Bill
----- Original Message -----
From: Dana
To: 'RE-wrenches'
Sent: Thursday, March 19, 2015 10:14 AM
Subject: [RE-wrenches] Off grid loads Load sheet
There is wide spread on the hot tubs. I have an offgrid client who bought a
super-insulated (6-12" of foam) tub that heats the water with the waste heat
from the (very inefficient) motor @ 120 vac. It went away when he was
enlightened as to how it heated the water. I did not measure the load but it
sank his battery bank.
I have measured a few sat systems; 32-35 watts/hour about the same as a blue
ray and DVD/CD player, & Routers at 4-12 watts/hr, answer mach @ 12-15 watts/hr
with cordless phone charger charging, Garage door openers from 25-80 watts/hr
depends on Manu, Motion detectors at 4-12 watts/hour depends on Manu.
I have several watt hour meters I loan out for folks to do their "homework"
on their loads before I do a design that helps & I see lots of variation on
items.
2 years ago in LA, I went into Costco with my Brand watt hour meter and 60"
flat screens were pulling 65-83 watts. I was elated to find some real
efficiency and a larger screen.
I went in this last holiday season and ran the meter on the "NEW Smart" 60"
flat screens and the lowest draw was 95+ watts and a lot were in the 125+ watt
range. The new 60" flat screens come with a wireless keyboard and were full on
computers with every cable and internet ready application you can imagine.
----------------------------------------------------------------------------
Dana Orzel
Great Solar Works, Inc - NABCEP # 051112-136
E - d...@solarwork.com - Web - solarwork.com
O - 970.626.5253 C - 208.721.7003 - No FAX Line
"Responsible Technologies for Responsible People since 1988"
P Please consider the environment before printing this email.
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of frenergy
Sent: Thursday, March 19, 2015 8:56 AM
To: RE-wrenches
Subject: [RE-wrenches] Load sheet
Wrenches,
I'm always trying to update my reference for KWhrs/day for various
loads, especially as time marches on folks are of course wishing to power the
latest gizmo with an off-grid system. I can't seem to find very current info.
The days of going into search are certainly long gone with the advent of
answering/cordless phones, satellite dishes, routers, security systems,
etc...creating a heck-of-a "phantom load" 24/7.
Specifically, this time I'm hoping some of you have first-hand
numbers on KWhrs/day for a propane fired hot tub (still has brains of some
kind, ignition, pump(s), satellite dish for internet/TV and I'm not counting
on-demand water heater as much of a load due to its intermittent use unless
others have seen otherwise. I've never taken the "kit" approach, hoping a
cookie cutter sized system will fit a need, instead trying to really nail the
consumption-production dance leaving room for expansion.
If there is a favorite website anyone has for more current numbers
(KWhrs/day or even just watts) on current household appliances, I would
appreciate it.
Thx,
Bill Battagin
Feather River Solar Electric
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849 / 6544 fax
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