Saturday, June 16, 2012

Comparison between natural gas, electric, and induction cooktops


This comparison is just qualitative and not quantitative with no numerical facts or typical values. This comparison is inspired by some videos on YouTube and some data in ElectroLuxAplliances.com.




Natural gas cooktop
Electric cooktop
Induction cooktop
Electric supply
Optional for spark
Essential
Essential
Heating power
Small
High
Very high
Boiling time
Large
Small
Very small
Pan material
Any heat conductive material
Any heat conductive material
Heat conductive material which attracts to magnets
Cooktop components heating
Heated
Heated
Only pan is heated
Heating area
Constant. Different heating areas are provided by using different eyes.
Constant
Dependent on pan base area
Putting hand on cooktop’s surface
Burning hazard
Burning hazard
No burning
Heating power control
Control gas flow rate
Control electric current
Control electric current

If flame is fade out, an external source is required to ignite the gas to continue heating
If electricity is out for certain time, the heater will continue heating when electricity is back
If electricity is out for certain time, the heater will continue heating when electricity is back
Mechanical maintenance
Difficult and required after small operating periods due to blocking of gas paths and galleries
Not required
Not required
Plug and play
Requires some setup. Difficult
Easy
Easy
Outdoor operation in strong winds, sandy environments, very cold places
No
Yes
Yes
Boil over effect
§  Kills flame
§  Requires cleaning after boil over
§  Requires re-ignition
§  Hazardous
Continues heating when boil over takes place
Continues heating when boil over takes place
Cleaning and washing
Difficult
Easy
Easier
Flexibility to move cooktop to another place
Difficult
Easy
Easy
Effect on inhaling in closed rooms (places)
Dangerous due to emission of carbon dioxide and monoxide
No effect
No effect
Hazard propagation
Wide (global) due to propagation of natural gas when flame is killed and natural gas is fed to the cooktop
Local
Local
Operating cost (in Egypt)
Low
High
High
Maximum temperature
Low
High
Very high
Pan blackening
Yes, because of carbon content of exhaust gases
No
No
Burning of plastic handles
May be burnt due to direct flame
No
No
Direct visual inspection of heat power
Easy
Hard
Very hard