Calorific value of waste

Calorific value (CV) of waste

The CV of the waste depends on the composition of the waste. Waste with a lot of PVC has a higher calorific value then waste with less PVC and more paper. Here we give some approximate numbers about the calorific value of materials.

 

 Type of material CV (MJ / kg)  CV (kCal / kg)
 Medical waste

19 - 24

4540 - 5735

 Industrial & hazardous waste

22 - 40

5257 - 9558

 Domestic waste (without recycling)

7 - 16

1673 - 3823

 Domestic waste (afther recycling)

10 - 14

2389 - 3345

 PVC

41

9797

 Dry wood

14,4

3441

 Paper

13,5

3226

 Braun carbon

7 - 12

1673 - 2867

 Petrol (benzine)

45 - 47

10573 - 11231

 Coal

15 - 27

3584 - 6452

 Diesel

46

10992

 Ethanol

30

7168

A material can burn without supporting fuel when it has a calorific value of min. 14,4 MJ/kg, this is approximatly dry wood. To know the overall calorific value of the waste, you need to measure the calorific value or estimate by analizing the composition. 

If there is no chemical reaction by mixing the different materials together, a weighted average of the different calorific values are a good approximate value for the CV of the waste mix.

If the amount of waste is known, and the calorific value of the waste is known, it is possible to design the size of the incinerator and flue gas treatement system.