Choosing an LED lamp

Hello everyone, in the continuation of my post I want to talk about my experience in choosing LED lamps.
Before writing this post I was inspired by the fact that the market for LED lamps has expanded significantly, and prices have become more affordable.
For comparison, we choose LED lamps, which can be purchased at retail stores in Russia or ordered from China.
General photo for memory.



So let's get started.
Since I am a fan of every kind of economy, the use of low-energy devices in everyday life is a priority.
It so happened that, having got to sell the store, I bought myself several LED lamps from the domestic market, which led to the idea of ​​comparing them with lamps from China.
As a result, we have a set of lamps:

No	title	power	price
one	Incandescent lamp	95 W	15 r
2	Incandescent lamp	75 W	15 r
3	Incandescent lamp	60 W	15 r
four	Chinese lamp sample 2012	9 W	300 p *
five	Chinese lamp sample 2014	6 W	60 p **
6	Navigator	7 W	190 p ***
7	Housekeeper	7 W	217 p ***
eight	BBK	7 W	176 p ***
9	Philips	7 W	240 p ***
ten	Start	7 W	159 p ***
eleven	Gas lamp navigator	30 W	158 r

* discontinued
** price when buying 10 pieces, base e14 (lamps were purchased for one chandelier, which was changed to another. I use it with an adapter E14-E27)
*** Personally, I got these lamps for half the price, so I’ll give you the market value

Let's compare the declared power of these lamps with the actual power consumption. We will perform the reconciliation using the instrument, which was written about earlier .

No	title	power	real power
one	Incandescent lamp	95 W	91 W
2	Incandescent lamp	75 W	73 W
3	Incandescent lamp	60 W	57 W
four	Chinese lamp sample 2012	9 W	8.3 W
five	Chinese lamp sample 2014	6 W	2.9 W *
6	Navigator	7 W	7.2 W
7	Housekeeper	7 W	5.5 W
eight	BBK	7 W	7.5 W
9	Philips	7 W	6.9 W
ten	Start	7 W	7 W
eleven	Gas lamp navigator	30 W	27 W

* Apparently the Chinese have deceived
')
Take a photo of all the lamps. To do this, put the same shutter speed and aperture. Accordingly, 1/4 '' 3.5 ISO 400. Since the lamps partially have a warm, partially cold light, we will make the photos black and white

Chinese lamp sample 2014 warm:



Incandescent bulb 75 W:



98 W glow lamp:



Chinese lamp sample 2012 g warm:



Navigator is warm:



The housekeeper is warm:



BBK white:



BBK warm:



Philips cold:



Start warm:



Energy lamp warm:



All pictures in one file:



Let's see how things are with flicker.

Incandescent lamp:



China 2012:



China 2014:



Navigator:



Housekeeper:



BBK White:



BBK Warm:



Philips:



Start:



Energolampa:



It can be seen that the flickering is absent in the Navigator, BBK, Start lamps. Slight flickering in incandescent bulbs, Philips, energy lamps.

Perform the calculation of energy consumption for the room type "deaf corridor". Parameters: 6m * 2.5m * 2.8m (height). At the moment in the corridor there are 2 ceiling lights with 2 lamps in each. The number and power of the lamps will be chosen from the consideration of “light enough”.

Suppose the light in the corridor is on:
Mon-Fri from 7-30 to 9-00 and from 18-30 to 23-00
Sat-Sun from 10-00 to 23-00

Then we get that the work time per month (6 hours work.d. * 5 + 13h out * 2) * 4 = 224 hours of work.

We make a summary table at a cost of 1 kWh 2.3 rubles.

lamp set	Power consumption	Costs per month
4 SVD lamps, let it be 2 to 7 and 2 to 9	(7 * 2 + 9 * 2) * 224 = 7 kWh	7 * 2.3 = 16.1 rubles
3 lamps of 60 W each	3 * 60 * 224 = 40 kWh	40 * 2.3 = 92 rubles
2 gas lamps	30 * 2 * 224 = 20 kWh	20 * 2.3 = 46 rubles

We make the calculation taking into account the cost of the lamps and the assumption that the incandescent lamp needs to be changed every six months, and the SVD and gas once every 2 years.
We get that:

lamp set	Average stand	Costs for 2 years
4 SVD lamps, let it be 2 to 7 and 2 to 9	200 r	16.1 * 24 + 4 * 200 = 1186 r
3 lamps of 60 W each	15 r	92 * 24 + 15 * 3 * 4 = 2388 r
2 gas lamps	150 r	46 * 24 + 2 * 150 = 1404 r

It can be seen that incandescent lamps are almost 2 times more expensive than SVD or gas, LED wins with a small margin

Personally, I liked the bbk lamps: there is no flickering, it is very convenient to use in lighting devices with a horizontal or vertical socle at the top (a good angle), and of course the price.