Good Links

Joseph Lstibrek has some excellent YouTube videos online and the Building Science Corporation has lots of his writing. You'll laught and cry and learn.

Summary

In Jan 2001 I had a REEP home energy evaluation and the home rated 77. That could be raised to 82 with a high efficiency natural gas furnace and a heat exchanger (HRV). In this scale, a home with a rating of 100 has no heating costs while a rating of 0 means that the home is expensive to heat, has cold drafts and/or has poor air quality.

Links

Induction Cookers

Here are pictures of the electronics of induction cookers.

This is the internals of the Iwatani induction cooker. It was very dirty (oily) after years of use in a restraunt.
picture

This is a Kenmore drop-in induction cooker which blew within a month of our buying it used. The first picture shows all of the circuit boards. The "filter" board takes in 240Vac and filters it and houses the control computer.
picture
When it failed the IGBT's and the associated recitifier blew. Replacemnt cost for the circuit board was very high ($900) and there was no obvious evidence of their failure - except by using an ohm-meter to identify that the parts were fully shorted internally.
When the IGBT's blew it took a while for the circuit breaker to blow. Where the "filter" circuit board was supposed to have 240V 20A fuses - none were installed. However, the trace on the circuit board vapourized - causing some slight damage to neighbouring parts. After adding a copper wire to fix the blown trace and replacing the IGBT's (purchased from Hong Kong for $8 ea) and the recitifer (about $15 from Newark) the induction cooker worked perfectly.
picture

Pull the Gas Feed?

March 2011 This idea has been rattling around in my head but a re-evaluation of our gas use, for heating, has made me blue sky the idea of not having a gas fired furnace.

Gas Use and Cost

580 to 600 m^3/yr gas
Assume 600 m^3/yr at 2kg/m^3 is 1,200 kg, at 580kg/m^3 for liquid gas that's about 2m^3 of LNG
1 Btu = 252 calories
1 Btu/Hour = 293 mW or 1W = 3.413 Btu/Hour
Natural gas 950 to 1150 Btu/Cubic foot (No 2 Oil is 140,000 Btu/gallon) Butane = 3,200 Btu/Cu ft (propane 2,500 Btu/Cu ft)
Our furnace is rated at 38,000BTU/h or 11.2kW/h and in the dead of winter the furnace might run perhaps 50% of the time. So a continuous 6 kW heater (5 hair driers) could heat the home.
Our house and yard has no passive solar potential, no south facing side or windows or roof. Our 1500 sq-ft house is a sprawling backsplit with 1/2 of the ground floor being UNINSULATED and ABOVE ground! Energy loss via the large exterior area and uninsulated floor is signif.

A more energy efficient design (smaller 2-story) with a passive solar design would require signif. less heating. Also by using annualized geo-solar to dump unused heat from a solar water heater into 100 tons of sand under the main floor would provide a lot of heat for the winter.

Electricity Usage By Typical Equipment

According to the OEB 60% of Ontario households use < 1,000 kWh per month.
There are many household items which constantly draw electricity. For example the furnace transformer or central-vacum transformer draw aprox. 5 W of electricity all the time. Since they are rarely ever used for most of the year they give an oportunity to save electricity.

Energy usage was measured using the watts up? standard power meter from Electronic Educational Devices INC http://www.doubleed.com The accuracy is listed as a fraction of the measured value: +/-3% +/-2 digits for loads >10W and +/-5% +/-3 digits for loads <10W. NOTE: This meter appears to be quite inaccurate for <10W loads such as switching power supplies. Ie I'll get a reading of 0W; but if I plug in another load that is about 4W and then add the one I'm trying to measure it registers 6W.

Power Measurement with Hydro Meter An excellent way to measure the power use of some things, and find vampires is to just use the hydro meter on your house. You need to time how long it takes to do a full, or partial, revolution of the dial.
P = (3600 * dial revolutions * Kh) / revolution_time_seconds
Kh will be indicated on the meter. For low power measurements I typically count how long it takes to do 0.1 or 0.2 of a revolution as that'll be 3 minutes! Note that the meter does become inaccurate at about 15W and less. For low power my meter doesn't seem to turn at all.

I've used the hydro meter to measure the power use of things like the furnace fan, oven and to verify the impact of my 3 biggest vampires (microwave oven, central vacume transformer, power bar for computer and it's extras).

  • Electricity Use, Car Pollution Measurements
  • Our Energy budget and upgrades
  • Our water heater upgrades (gas to electric)
  • Electricity Use Breakdown (updated May 2006)

    Average Power UseLoad% of total
    Current Daily Use: 7kWh = 290W [2005] 275W [2006] average draw or $0.70/day at 0.10/kWh
    100Westimated lighting [50W], TV for 6 hours
    2008 June computer use 29.4h on, 71h standby in 10 days 2.42 kWh (63W on, 8W standby) (May 2008, 4 days, 9.3h on, 31.8h standby)
    est. 34%
    87WFridge, Freezer30%
    est 34+W3 clocks (bedroom, microwave, oven) and transformers [central vac (5W), furnace (10W * 2/3), garage door opener (4W * 1/3), answering machine (3W), furnace (10W), cordless phone (4W), attic RF tv amp (3W), tv (1W), vcr (1W)], 3 GFI sockets (??) 12%
    51Wfront loading washer(3W), elec. dryer(48W - rated 500kWh/yr or 57W continous) - 200 times per year17%
    23WComputer+LCD+DSL 0.54kWh/day over 9 days Oct 2010,
    2008 June computer use 29.4h on, 71h standby in 10 days 2.42 kWh (63W on, 8W standby) (May 2008, 4 days, 9.3h on, 31.8h standby)
    ?%
    guess 25Woven - wild guess (rated 900kWh/yr or 103W continous)9%
    0W (was 25W)4 Smoke (now battery operated), 5W CO detector only used in winter0%

    Items that have been removed from electrical use:

    1. 4 x 5W Smoke detectors replaced with battery operated ones (aprox 1/2 the cost of operation)
    2. front door bell (4W) - now powered by old 9V battery from smoke detector
    3. garage door opener (4W) - only plugged in during the winter
    4. cordless phone (4W) - move from transfer DC wall blob to switching power blob(<1W)
    5. answering machine (5W) - changed to a different model using smaller DC blob (3W)

    To be removed:

    1. 4W water softener - manually regenerate it every 6 weeks
    2. Central vacume?? wire into some other transformer or DC source??
    3. answering machine (3W) - move from DC wall blob to switching power blob (<1W)

    Not measured:

    1. GFI outlets (3)
    2. RF amplifier in ceiling (labeled 3.2W)
    3. Oven clock (estimated 5W)
    4. Furnace (estimed from current draw)

    Jan 2011 Our P4 was replaced with an older AMD 2.2GHz computer system. Power measurement is: DSL router (6W)
    old HP inkjet (6W)
    older LCD standby (3W)
    Computer 8W standby, 79W in BIOS, 48W typical

    [2009] Our computer system (printer, DSL modem, LCD) was measured as 132W max (booting), 109W typical (114W with the LCD at full brightness) and 20W standby in Oct 2010. That is for a P4-2.4GHz computer - all data in the table above is for a 1.3GHz P3.
    Energy use was 0.54 kWh/day over 9 days (Oct 2010).

    I was surprised to learn that some modern items draw as much electricity when they are off as when they are on! This typically includes printers, home stereo and VCR equipment.

    Possible Upgrades

    Here is a list of possible upgrades:

    1. Sun Frost R19 fridge ($2800 US) 770Wh/day (extra insulation)
    2. Sun Frost R10 fridge ($1600 US) 9 cu-ft (275Wh/day extra insulation)
    3. SunDanzer DCR225 DC chest fridge (225L, 8.1 cu-ft) ($1100 US) 180Wh/day (extra insulation + chest type + DC motor)
    4. Danby 17.7 cu-ft (501L, 16 cu-ft) fridge 1.0 kWh/day 372kWh/yr ($450 scratch-n-dent, $650 new Boy's Appliances Kitchener)
    5. Convert a chest freezer into a fridge. This an experiment started Sept 2010.

    The Oven

    Our oven/stove-top uses aprox $4 / month of electricity. "Self cleaning" ovens are touted as being more energy efficient because they have more insulation. They typically cost $100 to $150 more and save you 4% of your energy or about $2 per year in our case.

    Office of Energy Efficiency - EnergyStar program has excellent information rating modern equipment.

    Cars

    Good links: Canadian Autosmart (fuel economy) Program

    Here is some of my experience with cars. In a perfect world, all cars with automatic transmissions would be banned; as well as any car that can't get 50 mpg. All monster/mini trucks, RVs, SUVs, HPVs, etc. should be crushed because of the sheer volumes of gasoline they use and pollution that they spew out. Dito for any car that can't get 45 mpg!

    Emissions Testing

    Taxes and Energy use

    My home taxes are 3x more expensive than the total heating + electricity costs. This clearly means that there is no incentive to reduce energy use! I advocate at least a doubling or trippling of the cost of fuels [gasoline, natural gas, oil, etc] in or order for these costs to:
    1) reflect the true cost of environmental dammage / health costs associated with these fuels.
    2) be a significent part of the cost of owning a home and therefore giving home owners an incentive to reduce their consumption.
    Here are some of my home energy consumption figures (old).

    Upgrading, Low-E Argon Windows, Insulating sashes, Insulating Curtains?

    With the failure of nearly all window seals (15 year old Golden Windows) in our house in the first 2 months of the 2005 Winter I started looking into upgrades. Windows of our vintage used a butyl edge around the outside. It was crudely applied - rounded at the corners. With age the butyl is cracking. Note that our failed windows were on all sides of the house - some NEVER getting direct sunlight!

    Windows can be upgraded (to low-E, argon, warm edge) as follows:

    1. Replace the glass in the vinyl and wood sash for $100 / window - aprox $8/ft^2 for double glazing and $10/ft^2 for low-E, argon filled with warm edge spacers. The glass makers seem to cut to 1/8" dimensions as I undersized by 1/16" and they undercut by 1/8 - a conservative thing to do.
    2. Replace the vinyl sash - aprox 1.5 to 2x more expensive than glass replacement. ($150 for clear glass, $205 for low-E/Ar)
    3. Replace the whole window with a vinyl unit for aprox 6x the cost of glass replacement ($600 -> $800 / slider window).
    I opted for just replacing the glass. Since I'm disassembling the window I'm also going to fill the sash with foam insulation.

    A typical vinyl sash is an open cavity - so for about 1" all around the window you've got perhaps R2, if you're lucky, due to the air gap and 2 vinyl layers. By filling this, even 1/2 way, with foam insulation you'll increase the R value to R4 - in excess of the R3 of an efficient glass window. Be sure not to overfill as it can warp the sash and create many problems.

    The effect of low-E, Argon filling is readily measureable with a simple home thermometer. Here are some measurements done at the centre of the window:
    ConditionTemperature Difference At Glass
    Between Inside Air and Glass Surface
    (0C outside, 20C inside)
    Good double glazed windowreference (typically 3.5C below air temperature)
    Failed double glazed window with misting0C
    Failed double glazed window - measured where water filled-1.25C
    Low-E, Argon double glazed+2.5C (typically 1.25C below air temperature 4" from window)
    Close thick curtains-2 to -3C

    Summary: Thick curtains closed over a window do offer an equal amount of extra insulation - but only when the curtains are closed. Low-E and argon filling increases window temperature by 2.5C and the windows are nearly at room temperature - feeling a lot less cold. Insulation value is increased 50%.

    Calculations on window energy efficiency upgrades.
    WindowAverage
    R-value
    Info
    Vinyl Living Room
    double glazed, "warm" butyl seal
    aprox 25x20"
    1.88 (U 0.53)uninsulated sash 1.5" wide, window 1/2" into sash
    3.72 ft^2 glass, sash cavity 0.42 ft^2 + 0.25 ft^2 edges
    Upgrade glass to low-E,argon (R3)3.19 (U 0.31)
    Upgrade glass to low-E,argon (R3)
    foam fill sash cavity
    3.54 (U 0.28)sash cavity filled with foam, un-modified sash edges
    Bedroom window (basically as above) 33x20"1.75 (U 0.57)
    Bedroom window R3 glass upgrade3.24 (U 0.31)Low-E,argon glass
    Bedroom window R3 glass & foam filled cavity upgrade3.56 (U 0.28)Low-E,argon glass, sash cavity insulated

    Window stats

    Bad Kenmore Frontloading Washers (March 2012)

    I started measuring PH of the wash water and detergents we use as people have implicated acidic detergents are corroding aluminum.

    I've had 2 friends with failing Kenmore frontloading washers. For one the main controller (mechanical) failed and then the bearings failed. For the other the controller failed - but upon disassembly it was clear that the spider arm holding the stainless drum (aluminum spider, stainless steel drum) had cracked resulting in failure. The 2nd picture shows the back of the plastic tub where the bearings are and the drum has been grinding against it leaving plastic shavings in the tube by the pump. The drum could be pulled back and forth about 1/4" via the belt pully at the back. Mixing aluminum and steel in a wet environment like this ensures that the product will fail - and when it does it's not worth repairing.

    picture

    Failures of this type seem to be all over the internet. Yes there were also 4 protruding screws from the steel drum as others have reported.

    Both failed washers were around 7 years old.

    Failures tend to be blamed on chemical corrosion due to the PH of the detergent. Google "Gaute Svenningsen aluminum corrosion":

    Clothes Washers

    Curiously enough - I converted the four mains (120Vac) connected smoke detectors with battery operated ones and that nearly exactly balanced the increase electricity load caused by washing and drying diapers every 6 days (20W continous or 440 Wh/day). This just goes to show the power of vampire appliances when compared to legitimate use of something, a clothes drier, that is power hungry when used!

    Here are some measurements from my own washers:
    WasherMeasured Electricity UseWater (wash [hot] / rinse [cold] = total)Energy Star RatingDrier time for a typical loadNotes
    Front Loading (Kenmore - 2002 model)?? w-hour20L / 78L = 98L196 kwh/yr60 minregular load, high speed spin, 370W peak draw during spin
    128 w-hour20L / 92L = 112L196 kwh/yr60 minregular load, extra rinse, high speed spin, 51 min washing time, 370W peak draw during spin
    Top Loading (Kenmore - aprox 1985 model)170 w-hour60L / 90L = 150L (aprox $0.25)aprox 1,000 kwh/yr90 minregular load, aprox 25 min. washing time

    This is from the Environmental Newsletter.
    "Washing machines are the 2nd largest user of water in residential households. Over 20% of indoor residential water use is for clothes washing. .. average household using a toploading washer this represents 362 loads of laundry, 54,300 litres of water and 1,000 kW hours of electricity per year. (This equates to 150L/wash or $0.25 water and 3kWH or $0.40 in electricity per load.)
    Efficient front-load washing machines save 40% of water and 50% of energy."

    Water Heating Costs

    From Popular Mechanics in the USA - Electric water heaters for a family use 2,550 kWh/yr and natural gas ones use 5,774 kWh (19.7 million BTU) and fuel oil ones use 8236 kWh/yr (28 million BTU).

    Details about our water heater.
    Ambient 22.0C, tank top 24.5C - add 1/2" insulation tank top rises to 27.0C, 35.3C at hot water pipe under insulation, metal stud on top 40.5C under insulation
    Ambient 20.7C, 39.1C at stud under insulation before furnace turned on
    Ambient 23.1C, 39.1C at stud after furnace raised house 19C to 23C
    Ambient 21.5C, 38.7C at stud

    For my home, with natural gas heating, the hot water represents aprox 1/6 of the natural gas usage. Given that we don't use that much hot water - I find it excessive. Aprox $90 / yr in gas is spent keeping the water tank hot and about $15 / yr in heating water for use. I often leave it set at the "vacation" temperature as that is hot enough for showers and dish washing. The city is trying to upgrade me to a larger model as they claim that a 40 US gal water heater isn't big enough for 2 people - much less a family of four.

    Note: The city came back with an interesting offer - a high-efficiency (96% - Polaris) water heater. Then the water heater uses an "air handler" to heat the house! It sounds good. That way we get efficient water as well as heating. The snag is that the rental costs are $37/mo much more expensive than the current water heater ($8/mo) and we'd only save $150/yr in reduced natural gas use - so it would COST us $167 / year to have more efficient heating.

    Water Heater Costs

    Nov 2009 - In one week our 19 gallon GSW water heater used 9.31kWh or 1.33kWh/day or 55.4 W/h

    Electric water heater (GSW) costs for 2006 models:
    sub 40gal not-tested (ie 10L)!!
    40gal 57->71 W/h
    60gal 75->96 W/h

    Water Use

    There are 3 main uses for hot water in our house:

    Waste Heat Recovery

    Here is an interesting product which recovers waste heat in water and is best used with in-line "tankless" water heaters where water is used and dumped at the same time.
    Power Pipe - Heat Recovery and GFX Gray Water Heat Recovery and GFX test results

    Natural Gas Heating

    These figures are from white-rodgers.com
    1 Btu = 252 calories
    1 Btu/Hour = 293 mW (1W = 3.413 Btu/Hour)
    1 HP = 746 W
    Natural gas 950 to 1150 Btu/Cubic foot (No 2 Oil is 140,000 Btu/gallon)
    Butane = 3,200 Btu/Cu ft (propane 2,500 Btu/Cu ft)

    So heating the water tank (33 gal in one hour costs:)
    Natural gas: 33 gal * 4.5L/gal = 149 L * 50C = 29 Cu ft gas or $0.32
    Electric heating: 8.6 kW for 1 hour = $1.00

    Home Natural Gas Consumption

    During the winter of 2006 I started testing our low efficiency gas furnace. It's nameplate rating is about 75% efficiency. But that drops to an estimated 55% if it's cycled at 1F and 62% at 1C temperature swing. So I modified the thermostat by wrapping it in an insulator and then metal to add a time delay (12% longer furnace runtime, estimated 64% efficiency). Now the furnace runs 12% longer and the temperature swing is increased for an estimated 2% better efficiency. In the morning our house goes from about 17.5C to 22C and that takes 1 hour runtime and should be approaching 75% efficiency.

    NOT SO High Efficency Furnace

    In December 2006 we upgraded from a low efficiency (55,000 btu, rated 76% steady state) Lennox G8 to a York (40,000 btu rated variously as 92, 92.4 94.2%) high efficiency furnace.

    We're not very happy and here is why:

    1. Electricity Use: (April 16, 2007) 13W 0.11A standby
      5.6A 640W ignite + induction motor
      2.5A 195W induction motor only
      7.57A 740W low speed blower fan kicks in -> 6.50A 661W at end of 1 hour run
      4.46W, 479W blower fan only
    2. Noise Iit was much noisier than our old furnace. After droping it from medium-low to low speed this improved slightly. The annonying noise is from the induction motor. Upper end furnaces are supposed to be as quiet as a whisper; but they say nothing about the lower end ones and we found out why.
      Update (April 12, 2007) After some pestering the induction motor for combustion was replaced and the new motor is much quieter and about 3C cooler.
    3. Electricity consumption. YIKES! Our Lennox G8 used 380W of electricity - 3% of the total useable heat generated by the furnace. The York, now at low speed, draws 650W or 6% of it's heat output! So it's effectively an 86% efficient furnace! Medium-high fan speed uses 135W more electricity. They need to pay real attention to the electricity draw of both motors. The standby draw of the electronics is 13W, reduced from the 18W of the Lennox G8. One might argue that all heat generated by the motors is actually used to heat the house - but it's not being put where we want it and it's aproaching 8% of the total heat output of the furnace at normal fan speeds!! I would prefer a less powerful furnace - but clearly the electrical power consumption is fixed and so it doesn't make sense to make a smaller furnace.
    4. The air handler motor is wayyy too powerful. It moves a heck of a lot more air than the Lennox and we don't need, or want, it. The furnace installers left every air register in the house wide open with dire warnings of closing them and running the furnace too hot. I actually cut into the plenium, inserted a temperature probe, closed almost every air register and droped the fan speed to low. Now the air rise is 25C (mfg spec is 19 to 36C) and the exhaust air is 46C while the nameplate maximum is 80C - so it's operating normally and safely.

    5. The induction motor runs HOT. It's case temperature is 63C when the furnace is closed and only 44C when the furnace door is opened. I leave it open!! The motor mfg (FASCO, type U21B, 2.25A 3200RPM, 495C) states that 100F (38C) is normal. The motor thermal protection isn't tripping; but running this hot must be shortening the bearing life.

    Pilot Lights - Low Efficency Furnace

    Our low efficiency gas furnace has a pilot light. It consumes 5.4 ccf / 30 days or 0.3 ccf/day. Our yearly average gas consumption is aprox 1.8 ccf/day and that includes water heater. The water heater is dominated by it's pilot light - 0.18 ccf/day (measured over a 2 minute interval) and aprox 0.1 ccf/day heating water).
    That means that the furnace pilot light uses aprox 0.2 ccf/day out of 1.5 ccf/day used for air heating or 15% of our total natural gas used for heating!!!

    May 14, 2006 I measured the gas use for furnace + water heater pilot lights and got: 2/10 cu ft in 4:20 = 67 cf/day
    7/10 cu ft in 19:55 = 51 cf/day
    9/10 cu ft in 30:20 = 43 cf.day
    Since the water heat itself draws 18 cf/day the pilot for the furnace is aprox. 25 cf/day

    This clearly means that we can increase our furnace efficiency by about 15% ($80 / year estimated by actually $50 / year because we turn the pilot light off for 4 months of the year) by having an electronic ignition!

    Our total gas consumption is 500 to 600 ccf per year for a family of 2 with 2 preschoolers. That breaks down to about 80% for the furnace and 20% for the water heater.

    Analyzing summer consumption; in years when the furnace pilot light was turned off, and by measuring the water heater pilot light directly, I was able to breakout the following:

    ItemGas Use
    ccf/day, ccf/mo
    Comments
    $1.1c/cf
    Summer water heater total0.21, 6.3pilot + heat, $84/yr
    Water heater pilot light 0.18, 5.4$72/yr, standing pilot light, keeps tank warm
    Calc. water heater heating water0.03, 0.9$12/yr
    Summer water+furnace pilot lights0.50, 4.5$201/yr
    Calc. furnace pilot light0.29, 8.7 (measured aprox 0.25)$116/yr (15% of furnace use)
    Total House Use1.8, 54Estimated from a 2003 winter, heating house all day for kids, $723/yr
    Calc. furnace heating house1.59, 48$638 (85% of furnace use), heating runs 8 months/year, 412 hours Dec19-May 10

    Here is raw measurements and calculations of our furnace runtime:

    Warmup: (min)	2.34	Assume all energy in warm-up phase is lost, 5 sec ignition delay
    Base Efficiency	76%	41,800 Btu/h output 55,000 Btu/h input
    
    Delta T	Run 	Run/Min	Effic. Net 	Fuel 	Delta 	Comment
    (C)	Time		Lost	Effic.	Wasted	Loss
    0.56	6.21	11.2	27.3%	55.2%	$123.07		1 deg F estimate
    1	11.17	11.2	17.3%	62.9%	$77.83	$45.24
    2	23.06	11.5	9.2%	69.0%	$41.40	$36.43
    3	34.59	11.5	6.3%	71.2%	$28.47	$12.93	Est based on 2 Deg measurement
    5.5	61.17	11.1	3.7%	73.2%	$16.56	$11.92
    1.12	12.48	11.2	15.8%	64.0%	$70.96		Insulated thermister
    Try to verify eff. change by comparing 2 vs 1 Deg run times - should have lower run time (of total time?)??
    
    Modified thermostat on Jan 14 with 12% longer run time by adding thermal mass and insulating thermostat
    
    Thermostat Runtime Totals - note counts 2.25 min warmup, not 1 min.  cool-down
    Run time per 1C	13.62
    Run time/1C modified	14.92  (furnace thermostat modified)
    

    Kitchener Utilities says (April 2005) that the average house uses 2,600m^3 per year. Our consumption is around 1,500 m^3/year.
    Natural gas was $0.10 per m^3 upto May 1999, peaked at $0.27 in winter 2001 and fell to $0.15 in the summer of 2002 and then followed an upward trend to $0.27 in 2004. Delivery charges add aprox $0.11 per m^3.

    This heating budget is from our Home Energy Evaluation:

    Water Usage

    Low Flush Toilets

    First a general note about low flush and dual flush toilets. Generally they have much less water in the bowl. This means that more frequent cleaning is necessray and if anything is left in the bowl when you go on vacation the water will go stagnant very quickly.

    In August 2006 we acquired a dual flush (4L/6L) Vortens RF/DF toilet and there is much that we like about it. The 4L flush is almost as good as our old 6L toilet (one of the worst rated toilets at 150g/flush) and it'll flush everything pretty well all of the time - leaving a little behind some times.

    We generally like the Vortens toilet - the flush knob is a bit odd and hard for our preschoolers to push - but it's better than the dual flush toilets which have the buttons on the top. It does hammer the water lines a bit when it finishes refilling the tank but otherwise was trivial to install. In over a month of use I've never had an occasion to use the 6L flush.

    Our "Orion" 6L low flush toilet was installed around 2000 and it's been problematic. The flush quality is poor in general and I would never recommend this toilet, or ones rated the same, to anyone.

    Have you ever considered a waterless toilet? If you are considering a low flush toilet I'd highly suggest that you only consider models tested and approved by the City of Toronto. The Waterloo Region water web site has compiled some water test results and the Seattle on in particular shows no correlation between toilet price and performance. Click on "residents" on the left and then on "toilet replacement program" and look for the link called "toilet testing".

    Water Usage In General

    Kit Utilities Average Use
    (Sept 2006 flier)
    Per Person
    Our Use
    (2 Adults, 2 preschoolers)
    Water Use 215L/day/person 130L/day/family of 4
    Toilet 29% 50L
    Clothes Washing 21% 25L
    Faucets 16% L
    Shower 13% 25L
    Leaks 10% 0L
    Water Softener 8% 12L
    Bath 2% ?L
    Dishwasher 1% 10L
    Cooking, Drinking ? 6L

    Note that if we took the greywater (shower, sink, bath, faucets) it would be more than enough to provide water for our 4L flush toilet or even a 6L toilet.

    September 2006 - the average water use in our region is 215 L / day / person. The pie chart says that water use is 1% dishwasher, 2% bath, 8% water softener, 10% leaks, 13% shower, 16% faucets, 21% clothes washing, 29% toilet.

    March 2005 - water rates are raised from $1.774 / m3 to $2.09 and this is apparently an increase of $6 to $7 for the "average" household. That means that the "average" family uses 20 m3 / month which is a good 5x what we use with our kids in cloth diapers that we wash at home!

    While taking a shower I use 5 to 7 litres of water per shower while a more typical person is around 20 litres. I can cut my usage of water to 3.5L by turning off the water while lathering. To put this into context - a low flush toilet uses 6L and older toilets use > 12L per flush!! Having a shower daily means that 10% of my total water usage is consumed with showers.

    A side effect of my water consumption is that I use so little water showering (1.5L/min or 0.35 US gal/min) that no in-line or "tankless" hot water heaters would not turn on as they all require 0.66 to 0.75 gal/min!

    CountryAnnual per capita water use m^3Water cost per 1,000L
    Denmark225$2.70
    United Kingdom230$1.65
    Germany560$2.70
    Canada1,600$1.00
    Our Household Family use50$1.00
    United States1,900$0.75
    Fall 2005 Kitchener Environews Flier

    Water Budget

    Just how is water in our household used? Useage was 26 cubic meters / yr when I lived alone and that rose to 40 cubic meters / yr with 2 of us. Now - with twins and washing diapers every 2 days that is aprox 80 cu. meters/yr. However, once we purchased a front load clothes washer and the diaper washing was reduced to weekly our water consumption droped back to 50 m^3 per year.

    The Canadian average is 326L / person / day of which 1/3 is used by toilets.

    1. top Loader Washer laundry - 200 L /load every 2 days = 3 cubic meters / month
    2. Front Loader Washer laundry - 110 L /load every 2 days = 1.7 cubic meters / month
    3. toilet low flush (6L) * est. 5 flushes / day / person = 1.8 cubic meters / month
    4. shower 7L/shower/person/day = 0.42 cubic meters / month (A bath uses 70 .. 100 L)
      Note family members use 5->7L, 17L, 40L, 90L per shower
    5. Drinking and cooking - aprox 5 L / day = 0.15 cubic meters / month
    6. Water softener - aprox ?? L ever 3 weeks for regeneration = 0.05 cubic meters / month ???
    7. garden and lawn are watered by rainfall and the rain barrel

    Efficient Lighting

    I strongly recommend flourscent lighting for areas where the lights are being used more than 1 hour / day. The Philips Marathond flourscent lamps in particular give a soft white light that is flicker free. The bulbs are expensive but will reward you with a reduced electricity bill.
    The compact flourscent lamps don't use the old style of transformer to generate the high voltage but instead use an electronic circuit and much higher frequency. For that reason they can't flicker and are much more efficient than the old style flourscent lamps. You get what you pay for in the sense that lower cost compact flourscents have a shorter life and are less efficient.

    Lamp Electricity Use and Car Emissions Measurements

    Garbage Generation

    My wife and I generate one bag of garbage every 4 or 5 weeks and fill the recycling box every 6+ weeks. The recycling box is primarily filled with unsolicited newspapers and filers. Boxboard [cerial boxes] and 2L pop bottles make up a small part of the material and we almost never use metal cans.
    The non-recyclable garbage which we produce is primarily wrapping from items (food, etc) which we purchase. We compost what things we can.

    Small gasoline equipment (lawnmowers, etc)

    A typical lawn mower puts out as much pollution as a car. Why? There is no pollution control equipment, poor control over the fuel mixing and a basic design (2 stroke) that burns oil.

    Reel Lawn Mowers

    I've recently bought a Yard Works "reel" lawn mower. This is the old style of push mower that literally cuts the grass. Cutting blades virtually cut the grass like scissors. The Yard Works mowers are made in China. German made ones such as Gardina are about 2x the price, lighter and probably much better made.
    Gardina does make an electrically powered push mower. I still go into laughing fits when I think of it!
    Problems: The reel mower did not come with lock washers and so I had to add them and the parts were not manufactured well. In particular the arms for the handle were not well bent and most importantly, the cutting blades were not well aligned. If I adjust the cutting bar such that the mower cuts in the middle; the outer 2 or 3" at each side does a poor job of cutting. Moving the cutting bar more will make the mower do a better job of cutting; but it also makes it noiser.

    Reel Mower Summary


    Good Links

    To be Organized

    Here are graphs of our home energy and utilities usage:

    My home is excellent considering that the cost of heating and electricity is 1/2 that of a typical home. The average home assumed by the home energy evaluators (for energy consumption savings estimates) is out to lunch.
    Utility   Their       My
              Average     Use
    
    Elec      $717/yr    $200/yr
    Gas       $700/yr    $500/yr
    
    
    Worse yet; they assume that hot water heating consumes 1/3 of the
    natural gas consumed!!
    
    My calculations show summer use = 13 ccf [water heating]
                         winter use = 93 ddf [furnace + water heating]
    
    Therefore space heating consumes 7x more natural gas than the water heater!
    
    Basically, their pie charts for energy usage are totaly useless given
    how far their average home deviates from mine.
    
    Be sure to point that out to them and pre-calculate some of your own
    usage figures to see if they're even close to your actual consumption!
    
    Their pie chart included:
    
                  Average   My
                  Home      Home 
    Space heating  49%       60%
    Hot Water      28%       12%
    Electricity    22%       28%
                  ------    -----
                 $1410      $700   [per year]
    
    
    5.3 air changes per hour "tight"
    $500 [59100 ft2 / year for nat.. gas [$90/yr for water heater]
    $18/mo [200 kwh] 1/3 = freezer + fridge
    
    
    Fall 2001 - switched to compact flourscent lights in regularily used lighting fixtures.
    Summer 2005 - switched T12 fluorscent lights to T8 and cut most fixtures from 4 or 2 lamps to 1 or 2.
    

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