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Refrigerator, kettle or vacuum cleaner – who “eats” more?

by admin

Have you heard about Energy Meter ?
There was already one interesting one on this blog about the device article A lot has been said about the device, but still I will try to add a little information, which is with us shared by RubyFOX
Refrigerator, kettle or vacuum cleaner - who "eats" more?

In addition to what has already been said, in this article :

  • I’ll show you how to set the rate in the meter and track electricity costs to the order of a penny, not 0.1 kWh⋅h ;
  • Using the example of a kettle, a refrigerator, and a vacuum cleaner, I will show how Energomer works;
  • I will estimate the cost of boiling a liter of water, daily storage of food in the domestic refrigerator, as well as the cost of cleaning a modern vacuum cleaner for a living area of about 90 square meters for one of the cities of Krasnodar Territory.

Those who are even a little bit interested in this topic are invited under the hat (Watch out for traffic!).

First, a brief summary of the device itself

Refrigerator, kettle or vacuum cleaner - who "eats" more?

The manufacturer’s website states the following specifications :

  • Working power range of the device :0, 2 W – 3600 W
  • Operating voltage range : ~ 190V – 276V
  • Current range : 0.01 A – 16 A
  • Current Limit : 16 A, 3600 W

On the device itself, in addition to the load limit value, you can also see the parameters of the batteries that power the screen of the device :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

I have been testing the device for over a month, and I can say that the screen has not sat down so far and is quite functional. The battery life of the three batteries is more than enough.
By the way, the batteries look like this :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

I would like to point out right away the values that the instrument allows you to measure.
This : voltage , amperage , power , electric power consumption Also, by setting rate , you will have the ability to immediately display electricity costs devices which you have connected via Energomer.
This is what it all looks like Voltage, in :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Amperage, a :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Power, W :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Electricity consumption, kW⋅h :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Tariff – Rubles:
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Costs – Rubles.kopecks :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Display modes are switched with the button FUNC
Refrigerator, kettle or vacuum cleaner - who "eats" more?

The operation and fine-tuning of the unit is as simple as possible.

  • If you need to reset the meters (electricity consumption, tariff, and energy costs), you need to press the MASTER CLEAR button with a thin object such as a wooden toothpick.
  • You can set the time and day of the week by holding down the SET button for a few seconds, then changing the desired parameter with the UP button and switching between the parameters with the SET button. The device allows you to calculate the cost of electricity in two tariffs at once (depending on the day of the week and time of day, you can specify a different cost per kWh). If you do not have an average tariff where you live, but rather several tariffs for different times of the day and night, it is especially useful to set these parameters correctly.
  • You can set the tariff to an accuracy of 1 kopeck by pressing the FUNC button, then switch units and tens of rubles by pressing the SET button and enter the desired value by pressing the UP button. There is an opportunity to set two rates, depending on the day of the week and time of day, but I do not need this function. I set the tariff, and then, holding the FUNC button for a couple of seconds, returned to the standard display mode.

You can read more about the setup and features of the device at electronic version manual on the official manufacturer.
To make it clearer and easier to understand, I also suggest watching a short video about Energomer:
Reset , day of the week and time setting , tariff setting , device in action
Let’s move on to the results of our measurements.

First in line is the refrigerator.

In my case, the test case was the model Saratov 1225M KSH-120 :
Refrigerator, kettle or vacuum cleaner - who "eats" more?

At first I didn’t know that the energy meter gets the value of electricity costs by integrating the power of the device in question over time. I thought it counted kilowatt-hours to the nearest tenth, then multiplied it by the cost of 1 kW⋅h (which you can set according to your tariff).
But here it turned out to be more interesting and much more accurate.
The results of the first measurements on the refrigerator, where I tracked only kilowatt-hours, I do not give here. The second time I did this experiment I recorded both kilowatt-hours and energy costs at the rate of 4 rubles 12 kopecks, which is valid for the city of Sochi.
I started the measurements on Friday morning at 5:11, connecting the refrigerator to the outlet via Energomer. I had previously zeroed the meters, set the correct time and rate of 4.12 rubles per 1 kilowatt hour:
Refrigerator, kettle or vacuum cleaner - who "eats" more?

As you can see from the intermediate measurement I took at 6:16 a.m., Energometer starts counting kopecks even before 0.1 kWh is reached:
Refrigerator, kettle or vacuum cleaner - who "eats" more?

I had already finished my electricity measurements in the afternoon, at 3:44 p.m.
As you can see, if it were counted simply by multiplying the counted kilowatt-hours by the tariff (in our case 0.3 kW⋅h * 4.12 R), the device would show a consumption of 1.23r, but in our case the figure is 1.34 R.
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Thus, the refrigerator worked from 5:11 to 15:44 (10 hours and 33 minutes, or 10.55 hours), which cost 1.34 rubles.
The average cost per hour of refrigerator operation according to my measurements turned out to be :
1.34 p. / 10.55 h. ≈ 0.127 p. = 12.7 kop.
On the average cost of a day of work of the refrigerator, therefore, turned out :
0.127 p. * 24 = 3.048 rubles, which, including the tariff, gives a consumption of about 0.74 kW⋅h/day.
The manufacturer states the power consumption of 0.63 kW⋅h/day. The value is quite comparable with what we got, if we take into account the influence of errors, different operating conditions of the refrigerator (filling, temperature in the room, etc.), and other factors.
Thus, we can conclude that a month of refrigerator operation will cost approximately (if you take 30 days) 91 rubles and 44 kopecks. All the same, this is much cheaper than filling the refrigerator itself.

The next test subject is the electric kettle

Refrigerator, kettle or vacuum cleaner - who "eats" more?

These are the tactical and technical specifications found on the kettle itself:
Refrigerator, kettle or vacuum cleaner - who "eats" more?

I did a fair amount of experimentation with the kettle before I even knew that you could measure electricity consumption more accurately than tracking kilowatt-hours to the nearest tenth.
Before I did the full test, I had time to measure the boiling of 1200 milliliters 8 times, and after each subsequent boil, 0.1 kW⋅h was added (I did not set the rate then, and I did not watch the consumption to the nearest penny).
But in this article I will give you the 3 measurements that I have already made using all the features of Energomera.
So, the kettle I got was not the most powerful, and 1200 milliliters boiled in it for about 9 minutes.For example, you put the kettle in the 7:31 and it boils at 7:40. In this particular case, we spent 48 kopecks, and a little over 0.1 kW⋅h was spent:
Refrigerator, kettle or vacuum cleaner - who "eats" more?

The next 2 boilings of the kettle, which I did in the afternoon and evening, showed the following results :
Second boiling : 47 kopecks and slightly more than 0.1 kW⋅h;
Third boiling : 47 kopecks and a little over 0.1 kW⋅h.
Photos here Second boil : 11:19 -) 11:31; 0.1 kW⋅h -) 0.2 kW⋅h; 48 cop. -) 95 cp.
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Third boiling : 20:26 -) 20:38; 0.2 kWh -) 0.3 kW⋅h; 95 kop. -) 142 kopecks.
Refrigerator, kettle or vacuum cleaner - who "eats" more?

Thus, the cost of creating boiling water with this kettle can be estimated as :

  • We also take a month long of 30 days. I assume that on average we boil a full kettle 2-3 times a day (2 times – let’s take 94 kopecks, 3 times – 1.42 rubles).
  • A month turns out from 28.2 to 42.6 rubles. It is significantly less than the cost of the refrigerator.
  • Next up is a vacuum cleaner.

    Refrigerator, kettle or vacuum cleaner - who "eats" more?

    This time we had a Samsung VCC-8852H3R vacuum cleaner as our test subject.
    Who’s interested, TSH of the device is under the spoiler:
    Features of Samsung VCC-8852H3R vacuum cleaner

    • Power Source : network
    • Vacuum cleaner dimensions (WxHxV): 28.2×49.2×26.5 cm
    • Functions and Features : dust canister fill indicator, auto winding of the power cord, foot switch on/off on the housing
    • Suction tube : telescopic
    • Fine filter : available at
    • Power regulator : on the handle (remote control)
    • Dust collector : 2L cyclone filter
    • Suction power : 380 W
    • Cleaning : dry
    • Noise level : 79 dB
    • Power consumption : 2200 W
    • Additional Information : Dual chamber cyclone system; range 10.5m; HEPA12 filter

    Refrigerator, kettle or vacuum cleaner - who "eats" more?

    During the experiment I vacuumed several rooms with a total area of 90 m². Beforehand I zeroed the meters Energomera, I set the tariff of 4 rubles 12 kopecks, which at the moment is relevant for Sochi. As a result, it turned out that one such cleaning cost us 1.58 rubles.
    If we assume that there will be 6 such cleanings per month, then the monthly cost of cleaning the same area will be about 9 rubles 48 kopecks.
    Thus, of the kettle, the refrigerator, and the vacuum cleaner, the cheapest, in terms of monthly expenses, was the vacuum cleaner. And the most expensive was the refrigerator.

    Afew words about the laptop

    Refrigerator, kettle or vacuum cleaner - who "eats" more?
    At the moment I have an old working tool, but it more or less copes with the tasks. I decided to estimate how much money this workhorse eats per month. For those interested, the model of the notebook is HP ProBook 4510S.
    I measured before I started using Energomera’s tariff options, so the result will be very approximate.
    During the tests I didn’t use my laptop for heavy tasks, I browsed the Internet in FireFox browser, watched a couple of movies online, also ran a few short documentaries from the external drive.
    I sat at my laptop during the test for a total of 12 hours and 12 minutes. During this time, the Energometer counted 0.4 kW⋅h. Thus, the approximate cost of 1 hour of work with a laptop at a low load: 13 kopecks.

    • If we assume that a day we have to sit at home laptops 6 hours, then the approximate expense per day we have 78 kopecks, a month winds up 23 rubles and 40 kopecks.
    • If you work remotely at a laptop, not related to heavy tasks, for a rough estimate, you can take 12 hours of work at the laptop. At this rate, in the case of my laptop a month will gain 46 rubles and 80 kopecks.

    These figures above are approximate, and the estimate is very rough. It should be taken into account that my laptop is not the most powerful, I mostly do not play games on it. But the order of power consumption, which entails the use of a laptop, you can estimate.

    So, what’s the bottom line

    Refrigerator, kettle or vacuum cleaner - who "eats" more?
    I find the Energomer functionality practical and useful.
    With this thing, you can estimate the costs of using different types of household appliances with a fairly high accuracy. You will be able to compare these results with each other and better understand your spending patterns.
    At the moment I’m a bit limited in my living conditions, so I can’t measure everything of interest yet. Maybe in a month and a half I will move to a cozier place, and there I will be able to measure how much the washing machine, air conditioner and multicooker "eat". If everything goes as it should, I will add this article later with the results of new measurements too.
    I have not disassembled the gadget yet, but after new measurements, I will try to do it. It is interesting, what is inside there. By the way, if some of you already have such a toy as Energomer, I suggest to share the results of the most interesting measurements here in the comments, it would be interesting to read.
    Thanks to Daget for the access to the device.
    If anyone is interested in this fixture, you can order it at manufacturer’s website
    A 10% discount for GeekTimes readers: code GEEKT-ENERGO (valid 14 days from publication, the code is valid for purchases at both the online and offline Dudget stores).

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