"out of town"?@OmCheeto , if the effect is slight, you'll need an accurate measurement, with cycles averaged out. Try this.
Measure the kwh/day with normal use over one or more days. Compare that with the kwh/day energy used when you are out of town and the door remains closed.
The functional side of ergonomics seems to be a square-ish box with a door for accessibility and standing on the floor seems to be the common design for a refrigerator. What about a counter top model wider than it is high, with several doors along its length? At least that would be good for someone with back problems and bending over issues, or wheelchair people who have trouble reaching to the high spots.. One could run with that for a re-design of kitchen placement of counters and cabinets and storage. all it needs is architectural imagination.The idea of glass doors is so-so. As a woman and a mom who raised a lot of children (and cooked a gillion meals) those would be okay, but there are more important things to women of any age; pull out shelves and drawers in both fridge and freezer, or even revolving shelves. Most women face the problem of not being able to find something when they need it, or unloading most of the unit to locate the item. Too, we forget some of the things we've bought until it's too late. Hence, throwing away money. We need better accessibility.
How do you know that?...
average consumption per day is 1.3 - 1.5 kWh.
It's actually very interesting, when you graph it:as for the issue of difference of leaving the door open for 5 secs vs 30 secs, pretty sure more heat will enter the compartment the longer the door is opened. heat transfer is a time function after all.
so, the longer the door is opened, the more electricity will be consumed to restore the temperature in the compartment to "normal"
I was involved in an argument a while back regarding the term "most".This seems to corroborate my intuition: most of the cold air escapes in the first ~10 seconds.
I propose, in a most off topic manner, that someone start a poll, in another thread, as to how we should scientifically define the term "most".I certainly agree his wording ("most" of the mass) was ill-advised even if technically correct. "Most" suggests a substantial majority (at least to me and probably to most people) rather than a very slim majority like 50.1% versus 49.9%. Gives the wrong impression --- mostly a matter of nuance.
I'll bet you meant...This seems to corroborate my intuition: most of the cold air escapes in the first ~10 seconds.
[COLOR=#black].[/COLOR]... Can we go with that ?... it certainly sounds reasonable to me...[COLOR=#black].[/COLOR]: most of the
coldnegative hot air escapes in the first ~10 seconds.
If you are using a Kill-a-watt meter, or equiv, couldn't you compare overnight kWh to daytime kWh? You'd need to manually log the kWh and time before bed and in the AM, but a week's worth of data should average out the defrost cycles."out of town"?
That doesn't happen very often for me.
But your's is a very good idea.
Though, it may extend this experiment into the "months" range.
But, as an oldster, I'm getting somewhat used to long range experiments.
ps. I will pay someone actual currency, if they can determine which continent jtbell's image is from...
on Tuesday, of course.
using Kill A Watt. I plug the Kill A Watt at 1AM 4 days ago, and I read everyday at 1AM.How do you know that?
@T=180 hours(7.5 days), the energy consumed was 27.69 kwh, which corresponds to an average power of 152 watts.If you are using a Kill-a-watt meter, or equiv, couldn't you compare overnight kWh to daytime kWh? You'd need to manually log the kWh and time before bed and in the AM, but a week's worth of data should average out the defrost cycles.
Great devices!using Kill A Watt...
hmm, $13.55, may I have the kWh? because price per kWh from one country to another is different, but kWh remains constant anywhere. a bit curious about the energy consumption when door not opened.@T=180 hours(7.5 days), the energy consumed was 27.69 kwh, which corresponds to an average power of 152 watts.
I've learned a lot about my refrigerator from the data I've collected over the last week.
One peculiarity during this experiment, was that my refrigerator operated at between 210 & 228 watts.
View attachment 112711
It wasn't until I accidentally triggered it to turn on, and start recording data every minute, that I found out why.
View attachment 112712
For some reason, instantaneous power consumption goes down with time, after the compressor has started running.
And I think I may have captured the defrost cycle:
View attachment 112714
"watts rough" is the the wattage between readings
"watts smooth" is the wattage from time = 14 hours
On or about t=20 hours, I went out for lunch, in an attempt not to booger my "DON'T OPEN THE REFRIGERATOR DOOR!" experiment, and spent $7.35 for lunch.
From my extrapolation of data so far, it costs me $13.55 to run my refrigerator for a month.
Conclusion: Eating out, even at Taco Bell, is kind of expensive.
This can be calculated with the the data from the first line of mine that you quoted;" ...which corresponds to an average power of 152 watts"hmm, $13.55, may I have the kWh? because price per kWh from one country to another is different, but kWh remains constant anywhere. a bit curious about the energy consumption when door not opened.
So your refrigerator uses less than half what mine does.average consumption per day is 1.3 - 1.5 kWh.
Already a thing!
I was just saying it was a thing. I had no idea what it cost. Please don't buy it and encourage them. The couple hundred dollars for the parts gets them a few thousand extra in product cost.Cost: $5,600
The temperature difference decreases over time with the operation of the cooling device. The power needed to operate the compressor decreases with a decrease in temperature differential. Quod erat demonstrandum.For some reason, instantaneous power consumption goes down with time, after the compressor has started running.