Question

Describe the flame and it's three zones with diagramme.

Answer 1

hi there!

In a general candle, flame color depends on the amount of oxygen, temperature, and nature of the substance that undergoes combustion. There are two types of flames: luminous and nonluminous flame. A luminous flame is a flame that provides light and is in bright yellow color. A luminous flame is a flame that does not get sufficient amount of oxygen and therefore, undergoes incomplete combustion whereas a nonluminous flame is much hotter and colorless and it undergoes complete combustion in the presence of sufficient oxygen. In a candle flame, a quarter of the energy created is released as heat.

A candle flame consists of several different zones with different temperatures. Colors tell us the temperature of the flame.

Outer zoneMiddle zoneInner zone

The outermost zone is the hottest among all zones and is blue in color, and this is due to complete combustion. It is the non-luminous part of the flame.

The middle zone of the candle flame is moderately hot and is yellow in color, and partial combustion of fuel takes place. It is bright part of the fire.

The innermost zone of the flame is the least hot and is black in color. This is due to the presence of unburnt wax vapors.

hope it helps ✌

Answer 2

Hello..
Answer..

Flame is defined as the region of burning gases.

It has three zones:

INNERMOST ZONE:
This zone consists of unburnt wax vapour given off by the molten wax.
It is the coldest part of the flame.

MIDDLE ZONE OR LUMINOUS ZONE:
In this zone, of partial combustion of wax vapour takes place with the Liberation of lot of energy.
This energy partly decomposes the wax vapour into carbon particles.
The Luminous zone of the flame is hotter than dark inner zone and is yellow in colour.


OUTERMOST ZONE OR NON-LUMINOUS ZONE:
It is a zone of complete combustion of wax vapour and carbon particles.
The air from the sides of the flame mixes with unburnt wax vapour and carbon particles from the luminous zone and completely burns them to form carbon dioxide gas and water vapour.
It is the hottest part of the flame.

Hope it helped ☺ ☺ ☺