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Bad outcome
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Bad outcome
On 1/20/2014 10:28 PM, wrote:
On Mon, 20 Jan 2014 14:50:35 -0600, amdx wrote: On 1/20/2014 2:32 PM, wrote: the EPA calc is $7.23 a year to run it. That is less than 60 cents a month. Do you know what the EPA uses as the cost for aKwh? How many hours per day do they use? Mikek I don't know and I didn't have much luck looking. I see a lot of calculators but nothing about how they get the number they print on the box. Obviously if you are getting that cut rate power Harry gets the number will be different than you get with the gold plated 45 cent California power. Cree claims an annual operating cost of $1.14 for their least efficient LED bulb, based on running 3 hours a day. They don't say what the cost of electricity is. Assuming they are using a realistic rate that means it would cost under $10 a year to leave it on 24/7. Here's an impressive and recent article. Outdoor high pressure sodium lighting at Munich Airport in Germany is being replaced with Cree LED lighting. "The airport expects the new flood lights featuring Cree LEDs to consume at least 50 percent less energy than the previously-installed high-pressure sodium lamps, which would result in yearly electricity savings of 122,000 kilowatt-hours and approximately 70 tons of CO2 on completion of phase one of the lighting overhaul." There's a picture of the new lighting shown. They used the brilliant white color temperature and the result is much better and more natural lighting than the high pressure sodium lights they are replacing. http://optics.org/news/5/1/21 |
Bad outcome
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Bad outcome
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Bad outcome
On 1/20/14, 10:24 PM, wrote:
On Mon, 20 Jan 2014 15:53:34 -0500, "F.O.A.D." wrote: On 1/20/14, 3:41 PM, wrote: A calculator. $50 at 0.15 a KWH is 333.33333333 KWH Divided by 30 is 11.111111 KWH a day The only variable is what is your cost for power, more accurately what is the incremental cost, minus the fixed charges that you pay anyway. I bet it is less than 15 cents ... unless you are in California. I pay 13 cents top line to bottom line and using less power would actually make that more per KWH because the fixed charges stay the same.. The last time I looked, the rates around here were 8.15 cents to 9.74 cents, so, you're paying about a third more for electric than we are. Interesting. Must be higher quality electricity. :) How are you looking at that? Is that total bill divided by KWH? I don't really know how the bill is determined. The rates for residential electricity from the various power companies in Maryland are posted on-line per state regulation. |
Bad outcome
On 1/21/14, 5:53 AM, Mr. Luddite wrote:
On 1/20/2014 11:16 PM, wrote: On Mon, 20 Jan 2014 19:03:48 -0500, "F.O.A.D." wrote: Since we had our genny installed, we haven't had a power outage that lasts more than a couple of minutes. We take credit for that! :) Me too, since I bought a generator, I have not had anything worth going out and flipping the transfer switch. (not automatic) I am glad I saved that $5000 ;-) The only way I could justify a whole house generator is if there was a permanent and direct fuel supply to it, like natural gas. Otherwise it doesn't make sense to me. A short term (meaning 1 or 2 day) loss of power is manageable using a small generator like the little Honda. The problem I'd have with a large, whole house generator is fuel. We don't have natural gas coming up to the house so the generator would have to be propane, gas or diesel. We have a 100 gal propane tank that feeds a Hot Dawg garage heater but a whole house generator would drain a full tank of propane in a couple of days. Since long term power outages up here are due to winter snowstorms, it's unlikely we could get a propane delivery every other day. Same with diesel. I learned that lesson in Florida following Hurricane Wilma. I had just purchased the little Honda and had also purchased a 12KW gasoline powered generator and wired it into the main panel. It wouldn't power everything, but I could selectively turn on what was needed (well pump, water heater, certain room outlets, refrigerator, microwave, etc.) I thought I was well prepared with about 6, five gallon gasoline containers. Not so. That 12kw generator burned far more gas than I expected and it was clear that my supply would only last two or three days at best. So I used it sparingly and had the little Honda running 24/7 to power a refrigerator, couple of lights, the Direct TV box and a TV. The Honda sips fuel, running almost 24 hours on two gallons or less. We were powerless for just over a week following Wilma and gas, if you could find a station with aux power, was scarce. When we installed our pool eight years ago (up here in MA) the electrical contractor tried to sell me a whole house generator, telling me it could be fueled by the propane tank we use for the garage heater. He specified a 20kw generator for our house. I doubt a full tank of propane would last 2 days. We ran underground conduit and wiring for one, but I held off on the generator. In the eight years since, we've only experienced two longer term power outages, both due to winter storms. Each lasted about 3 days and the little Honda got us through them both. We have a 500 gallon buried tank, so it gets filled to 400 gallons. I think our genny burns about 1.75 gph at half load, so at any time during the month between tank top-offs, we should have at least a week of run time, probably more if it is winter, because the larger of our two heat pumps primarily runs off propane anyway, so if the power goes out, the only additional load for heat from the generator will be to run the compressor and furnace fan. The smaller heat pump is not on generator backup. The longest power outage we have had here to date was five days. It was hot outside and it was miserable. |
Bad outcome
On Tuesday, January 21, 2014 4:53:47 AM UTC-6, Mr. Luddite wrote:
On 1/20/2014 11:16 PM, wrote: On Mon, 20 Jan 2014 19:03:48 -0500, "F.O.A.D." wrote: Since we had our genny installed, we haven't had a power outage that lasts more than a couple of minutes. We take credit for that! :) Me too, since I bought a generator, I have not had anything worth going out and flipping the transfer switch. (not automatic) I am glad I saved that $5000 ;-) You can't make electricity cheaper than you can buy it. |
Bad outcome
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Bad outcome
On 1/20/2014 10:53 PM, wrote:
On Mon, 20 Jan 2014 16:46:54 -0500, "F.O.A.D." wrote: On 1/20/14, 4:40 PM, amdx wrote: You're not that old, you probably had a TI-30. http://en.wikipedia.org/wiki/TI-30 Note the Red LEDs. Mikek I believe the HP-30 and most other scientific calculators appeared after I had received my M.A. We had a couple of clunky desktop calcs in the math labs and our trusty K&E sliderules. In those days, you actually had to know how to do the math, not that I was ever a whiz at math, but I did ok. I used to see calculators at work but they were big honking things that cost as much as a small car. Around 1970 Intel released the 4004 processor showed up and the pocket calculator hit the market. A "4 banger" (add, subtract, multiply and divide) was still $100 in 1971. I bought a Bomar. A year later they would give you one free if you bought a tank of gas. My first job out of the service was servicing electric adding machines. They actually had service contracts with scheduled PMs. Them wuz the days. |
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