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If you are looking for an Induction Stove, firstly, you should compare it with your existing LPG/PNG stove. You should check whether it will be beneficial for you in terms of Cost, Operation, Maintenance, Safety & Reliabiltiy. Comparison of Induction Stove & Gas Stove is a crucial step before you invest more in buying one.
As the price of petroleum is increasing day by day, the price of LPG, PNG, Petrol & Diesel is also increasing. The price of the LPG cylinder is high and fluctuating.
On the other hand, the price of electricity almost steady with varying unit rates from Rs 1.2 to 13 depending upon the slab. Whereas, for domestic usage, the unit rate of electricity usually varies from Rs 1.2 to 6.
The average electricity unit rate for domestic usage is around Rs 5 across India. The power consumption by an Induction cooker depends on the wattage consumed.
The following comparison table of Induction Stove & Gas Stove can surely help you consider various options like safety, operation, cost, energy efficiency:
Induction vs Gas Stove - Comparesion
Features |
Induction | Gas stove |
Energy Efficiency |
80-90 % |
40-50% |
Electricity Requirement |
yes |
No |
Working Principle |
Electromagnetism |
Combustion |
Safety |
High |
Moderate |
Cooking Environment |
Does not heat |
Heats up faster |
Weight and Space Requirement |
Low |
High |
Comfortability |
Needs only ferromagnetic flat-bottom cookware |
No such limitations |
Cookware Compatibility |
High |
Low |
Use of Cooling Fan when Cooking |
Can be used |
Cannot be used |
Cleaning and Maintenance |
Low |
High |
Harmful Gas Emission |
Does not emit harmful gases |
Produces Carbon Monoxide, Formaldehyde, Nitric Oxide and Nitrogen-di-Oxide. |
Capital Cost |
Moderate |
High |
Recurring Cost |
Low |
Moderate |
Ease of Use |
Medium Difficulty |
Very Easy |
Costs for Induction and Gas Stoves :
To calculate the recurring cost, let us assume boiling 20 L of water from 25°C to 100°C on an induction cook top and a gas stove separately.
We know that, Absorbed Energy= Mass x Specific Heat x Change in temperature
Where,
Mass of 20 L water = 20 Kg
Specific heat of water= 4.18 J/g°C
Change in temperature= 75°C
Therefore, Energy needed to heat water from 25°C to 100°C= (20 x 4.18 x 75) kJ or 6270 kJ
Whichever source you use (induction or gas stove), it must generate 6270 kJ of energy in order to heat 20 L water to 100°C.
v Induction-stove
The price of Electricity depends on the slab and the corresponding unit rate. To understand in detail, let us consider that we need to heat up 20 L water.
For an Induction Stove, if it runs for 1 hour with the 2000 watt power setting, it will consume approximately 2 kWh of electricity. Considering a medium range of slab with the unit rate of Rs 5/ KWh, it will cost you around Rs 10.
Ø Calculation
Let us assume to use 2000 watts of power on induction cooktop to boil 20 L of water.
But assuming 90% efficiency, effective power= 1800 watts or 1.8 kW
Approx time taken to boil water= 6270/(1.8*60) or 59 minutes.
Electricity consumed= (2*59)/60 = 1.96 kWh or units
If the electricity cost at your area is Rs 5/unit, then,
Cost of boiling 20 L water on induction cook top= 9.8 INR
v Gas Stove
On the other hand, an LPG cylinder will cost you around Rs 600 if you have a subsidy. If you don't have a subsidy, it might cost you around Rs 850.
Ø Calculation
Considering efficiency of the gas stove to be around 50%, the
Actual LPG consumption is 0.272 Kg
Price of a 14.2 Kg cylinder varies for different states in India.
Assuming an average LPG price of Rs 600 (subsidized) and Rs 850 (non-subsidized), we find that,
Cost of boiling 20 L water on gas stove (approx.)
Subsidized consumers= 11.65 INR
Non-subsidized consumers= 16.51 INR