1. Can you tell me what the measurement is in electricity is when calculating th

Question

1. Can you tell me what the measurement is in electricity is when calculating the CO2 per ton.

I know that the use of 1 ton of coal will produce 2,460 kWh. So you can run a 100 watt light bulb for a year on a ton of coal and that produces 3.740 tones of CO2.

Seems kind of wrong doesn't it. Coal is one of the worst offenders of CO2.

So I guess we have to think about a server that is using a 250 watt power supply left on all year and if the energy comes from a coal burning electric station then that one server would produce 6,150 kWh or 2.5 tons of coal.

This would generate approximately 9 tons of CO2 (if the coal was pure or almost pure carbon)

I just have to say wow that is a lot of Co2.

Explanation / Answer

Approximately 1500 Units (1Unit =1KWhr) is generated per ton of coal in a Supercritical 660MW unit. The parameters used are approximately:

a. Coal calorific value (Design value) = 3300 KCal/kg

b. Total Plant Efficiency = 38.5%

However the value of CO2 generated can based on several factors like the Coal grade, Moisture and ashes. Generally for a good quality coal approximately 2.82 ton of CO2 is generated per Ton of coal. So in practical condition we get only 1500/2.86 = 524 units(KWHr) per ton of CO2.

(Note : The above values has been provided by a Public sector Thermal power corporation)

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