Showing posts from 2020

How to calculate how much will be the electricity bills for your operating electric heater?

E lectricity bill have to be paid for the energy you have utilized in the form of electricity. Electricity company bill you for your energy consumption in kwh. A kwh energy is said to be consumed, if a 1kw consuming device or appratus is stayed turned ON for one hour. This is the simplest definition you can find at various other website too. But there is a something you have to bother about. The electricity bill, for instance a 1HP(745W) motor, can be higher than what the device is consuming. The reason is that often devices or apparatus, like motor, have capacitance and inductance associated with them. Because of these, inductance and capacitance, the power factor is less than one. which results in extra loads to the transmission system and hence, electricity company charges for these unnecessary load. Don't worry if you so not understand power factor at this point of time.In very simple form, remember, the more the power factor, lower will be the reactive power consumtion(A power

Got your cartridge heater stuck in the die? See how you can remove them out.

If you are in the maintenance department, in a plastic processing factory, you may have came across the stated Problem. In this article, let’s try to address this issue with a practical point of view.    Cartridge Heater seems the only viable source of concentrated heat in the dies. These heaters have a relatively short life as compared to other similar heater used in industry. The problem even gets worse, when these heater get stuck in the dies. The Reason for it is that, when the heater starts heating, due to thermal expanding, the circumference of the heater expands and thus the heater fits the bore size very tightly. While this property of expansion is beneficial, as it results in getting rid of air pockets, that remains in between the bore and heater body, It become a headache for the service personnel to remove the heater after its failure. Some urge the concept, that, while heating the heater expands, on the other hand why does not it shrink on cooling. The reason for

Common Electrical Insulation Materials

From this Image you may now have guessed what is this post about and about what we will be discussing further. Yes it is Ceramics which is widely used electrical insulation materials. But they aren't alone. There are other materials as well often termed as modern ceramics which offer a great deal of customization according to need. Ceramics have been known to human kind from ancient civilization, mainly for use as utensils. But now in the modern world they are mostly being used in electrical and electronic industries, Pharmaceuticals, Furnace Bricks and Lining, Glass, Cement, pottery, Sanitary wares. From now we Confine our self with the use of ceramics in regards to Industrial Heating in general and with electrical Heater in particular. To Start with, We might ask ourself  the question: why only ceramics is use in electrical heater? To answer this lets start in the reverse direction i.e by asking  when will a substance conduct an electrical current?. Any substance carry cur