Instruction

1

To determine the consumption

**of electricity**, it is sufficient to use the formula:W = P·t·T where:W – the consumption**of electricity**in kWh;P is the power consumed by the power consumers (the electric device) in kW;t – time end user on the day in hours;T – number of days of operation of the end user.2

In turn, the power consumption is calculated by the formula:P = robs·K, where:robs – total installed capacity;K is the factor of demand. The value of the coefficient will be based on the number of consumers, volume of download. It can be taken from reference material.

3

So, we can conclude that the consumption

**of electricity is**directly affected by two factors: the capacity of the device and time of use. For consumers of electricity is not only an economic necessity but also a product which can and should save. This will not only help to save money for other needs, but neither more nor less – to save the planet from destruction of resources. After all, to power station generated electricity, we must burn certain amount of fuel or wood.4

Unfortunately, to calculate self-consumption of household

**electricity**with great precision is very difficult, because some devices have different functions during which they consume different amount of energy. For example, the work cycle of the washing machine includes a set of water, heat, washing, drying etc. So the figures are approximate. In order to achieve a certain precision, the use of automatic calculation system**of electricity**, to put it simply, counters.5

Energopotreblenii appliance is, of course, a refrigerator. It usually runs for days and consumes at least 30% of all

**electricity**. More modest in comparison with him are washing machine, vacuum cleaner, iron, etc. when Buying a new electrical appliance, you should immediately see its power consumption. Typically, the "tricked" technique, the more it consumes. To inform buyers of technical equipment are divided into classes of energy efficiency: A, B, C, D, E, F and G. the Most economical technique belongs to class A, B and C.6

Often consumers efficient use of appliances, but forget about the other absorber

**of electricity**– light bulb. Do not leave the light where it is not needed, and the light bulb is the best replacement for energy saving. They are much more expensive than usual, but its durability will pay for energy costs.# Advice 2 : How to calculate power consumption

Control

**of expenditure****of electricity**in the house performs electric meter. When you need to do it yourself? For example, you lease space to multiple users and a shared counter. In this case, you want to split the cost of electricity to them in proportion to the consumption. Or we need to calculate the load on the network for proper selection of source**of electricity**in a newly built country house. Finally, we need to check whether your counter.Instruction

1

To account for the consumption

**of electricity**make a table. It will include all electric appliances – computers, printers, scanners (office equipment), lighting devices, household appliances (microwave, fridge, kettle or coffee maker). Power consumption of all these devices is known, works determine empirically. Multiple user arrange them in separate columns. The capacity of each appliance in kW and multiply by the time his work hours (per day). As a result, you determine the power consumption (kWh per day). Multiplying the resulting figure by the number of working days in a month, get the power consumed per month by each user. Create a table in Excel, it will provide the simplest formulas in the rows (users) and columns (users). In this form it is easy to fill and correct if necessary.Now divide the cost**of electricity**between users – as a percentage of the total consumption.2

If there is a need to determine the energy costs in your home country, do the calculation as described above. Here will be added the most costly expenditure

**of energy**– for heating buildings and for hot water. Table added 2 additional lines with an electric boiler and water heater. Select the type of boiler from the calculation of the volume of the heated space and possible as low as possible temperatures. The type of boiler, determine and write down its power while working during the day and number of days in the month. Similar job make the heater. Multiplying the resulting figure the cost of energy for the price of one kW/hour, will get consumption**of electricity**in monetary terms. It remains to count the cost of purchasing and maintaining a source**of electricity**(power line to the nearest substation, a diesel generator, a solar panel or wind turbine with additional transducers, batteries). Select the appropriate source and use it to supply electricity to your home.3

Finally, the need for counting arises if you doubt the meter readings. Calculate consumption

**of electricity**, as described above, and compare with the numbers on the counter. If doubt remains, check the correct operation of the electromotive counter. To do this, disconnect all appliances in the house, leaving a single light bulb with 100 watts. Take a watch with a second hand and note the time of rotation of the disk. If the drive makes a 1 minute one turn, and after turning off the light drive stops and never rotates counter healthy.Note

The presence of electronic counter eliminates the creep.

# Advice 3 : How to calculate the energy consumption

Scientists estimate that the reserves of fossil fuels in 50 years will be completely exhausted, so now is the search for alternative sources of energy. Private homes can provide electricity through solar, wind or water. But before selecting an alternative source or buying a backup generator need to calculate how much electrical power is needed to ensure smooth operation of all current consumers, if they are included at the same time.

You will need

- technical passports for all energy consumers;
- calculator.

Instruction

1

The easiest way to find the power consumption – fold consumption of all electrical appliances in the house. To find these figures in the Datasheet of the device.

2

You need to consider the features of inrush currents that occur when starting the operation of the energy consuming entity. These indicators can exceed the average values stated in the passport. Consumers of electricity with inductive and active resistance, in which the energy is spent on heating – plates, irons, incandescent lamps have the same operating voltage and at the time of launch, therefore, when calculating the total power of their indicators are simply summed.

3

Objects with a condenser (capacitive) impedance, which is part of the energy is converted into heat, and the other part to generate a magnetic field, may when you start to consume much more energy than in a normal working condition. Therefore, before calculating the total consumption, you must measure each object to multiply by 2.5-3 to avoid overloading the system.

4

Use to calculate the energy consumed by the following formula:

PE = 1,1* (K1 * НМЭ1 * пуск1+ K2 * НМЭ2 * пуск2+ ...), where PE is the total power of K – the number one type of energy consuming device, NME – rated power of the device To start – coefficient in-rush current.

PE = 1,1* (K1 * НМЭ1 * пуск1+ K2 * НМЭ2 * пуск2+ ...), where PE is the total power of K – the number one type of energy consuming device, NME – rated power of the device To start – coefficient in-rush current.

5

The calculation steps are the following:

- determine by the data sheet rated power of all appliances;

- calculate the power rating of the device with a given voltage at the time of start;

- sum all received values;

- multiply the amount by 1.1 (i.e. add 10% for reserve stock to the energy source not work wear).

- determine by the data sheet rated power of all appliances;

- calculate the power rating of the device with a given voltage at the time of start;

- sum all received values;

- multiply the amount by 1.1 (i.e. add 10% for reserve stock to the energy source not work wear).

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Example: the house has 5 sources of energy consumption: oven (NMA = 900 W), 2 incandescent bulbs (NMA = 2*100 W), refrigerator (NMA = 600 W) and TV (NMA = 500 watts). A fridge and TV are of capacitor resistance, so they need to adjust the ratio of starting current to 2.5.

Solution: according to the formula 1,1*(1*900*1 + 2*100*1 + 1*600*2,5 + 1*500*2,5), the total capacity of 4,235 kW. Accordingly, the power source must have a capacity of not less than 4.3 kW.

Solution: according to the formula 1,1*(1*900*1 + 2*100*1 + 1*600*2,5 + 1*500*2,5), the total capacity of 4,235 kW. Accordingly, the power source must have a capacity of not less than 4.3 kW.

7

The average country house in need of generator power output current of about 6 kW. The cost of wind turbines of such capacity is about 16 000$, solar battery will cost 19 000$. Albeit not everyone can afford such installation but in the near future many will be forced to move to consumption of alternative energy sources.

# Advice 4 : How to calculate power consumption

The main part of the payment for utilities account for electricity consumption. And each owner does not want to pay for the extra watts. That's why many of the acute issue is the calculation of the optimal number of the power needed. After all, it will help you save.

You will need

- calculator;
- -a notebook;
- pen (pencil).

Instruction

1

Make a list of all appliances located in your apartment. Next to each write about the work of a day. On all household appliances, at the rear, either in their passports described the exact consumption of electricity. It should also be recorded.

2

Count the number of light bulbs located in your apartment. Write them down separately. For example, 3 light bulbs 100W, 2 at 60W, etc. There is a stereotype that the main load on the grid give the bulb. But it is not so. Washing machine for one hour of work consumes energy twenty-five hundred watt lamps.

3

Check out the list. It must be written all electrical appliances that are in your apartment. Next to each should stand time (hours) working hours per day (day) and the amount of consumed watts.

4

Multiply all kilowatts for hours. Figure that will happen in the end indicates consumption of electricity per day. It should be remembered that it is only a calculated figure. Power consumption should be calculated based on the specific circumstances. For example, if you have a small child, the washing machine is 3-4 times more than usual, and therefore to adjust the figure should only be done when taking into account all specific circumstances.

5

Now calculate the power of all lighting. Summarizes all the power light bulbs, for example, 2х100+3х60+1х40, etc. In the end, you will get the amount of watts that consume all the light fixtures. The resulting amount and multiply by hours/day and you will get the number of watts consumed by the lighting in the day. Now to the result add the appliances. After everything is summed, multiply the number of kW on the 31 and get the monthly electricity consumption.

Note

Do not perform the calculation until the time until you take into account all the nuances and circumstances. Otherwise you make a mistake with the calculations and goes beyond the limit of the result.

Useful advice

Make the calculation during the repair. So you can clearly understand where and how to post for easy location of fixtures and appliances.