How long does the energy-saving daylight lamp tube change?
If a square originally needed a single one to reach the requirement, it now needs to be increased to three to achieve the original brightness. It's normally 3X36 = 108 watts per square root of 36 watts. It turns out that electricity consumption is only 0.036 degrees per hour and now it is 0.108 degrees to achieve the same brightness. The more you open it, the more energy you will consume. Besides, this is without causing damage to the case, the general tubes to use fixed number of year will gradually damaged, bad time change time will be more trouble, so as to compare and calculate a one-time change.
You didn't say you were satisfied with the brightness you had just installed three years ago. If the brightness drops only if the brightness decreases with time, replace the lamp with a reduced brightness in time.
Fluorescent lamp use time is long, the brightness is low is normal [because of the efficiency of fluorescent powder is reduced, cause lamp tube brightness drops]. The general store is not convenient to replace at any time, it is better to replace it at once. If you increase the density of the light, the light efficiency of the tube will not increase much, and the energy will increase with the opening of the tube, a little waste. A one-time change is a lot of input and a lot of it is compared to the actual computation.
