Fuel-Fired Furnaces
Advantages:
· Lower energy cost
· Easy to adjust or alter connected input
· Faster heat-up times because inexpensive control factors can be added to accommodate the difference in fuel burned during heat-up
Disadvantages:
· Requires extensive ventilation systems
· Potential explosion or fire hazard
· Requires more manpower for start-up and shutdown
· Adjustment more difficult to maintain, resulting in excessive fuel use
· Only certain materials or types of products can be run in direct-fired furnaces due to the effect of high dew point and oxidizing flue gases on the part surface
Electrically Heated Furnaces
Advantages:
· Systems are clean and free of the pollution normally found with fuel-fired systems
· Quieter because of the absence of blowers and combustion noise
· More uniform heat pattern
· No exhaust system required; no make-up air system required
· Does not generally require purge or flame safety systems
· Electrical power available almost everywhere
Disadvantages:
· High initial equipment costs
· Higher operating costs
· Cool-down times are longer because no combustion air is available
Source: ASM
From:
Sent: Monday, August 25, 2008 2:00 AM
To:
Subject: [MW:1056] PWHT Furnace
Hi Friends,
I need comparision between gas fired furncae and electrical induction heating furnace. Basically I am looking for advantage and disadvantage between these two heating media.
Regards,
Chetan Parekh
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