How to measure the energy used to fire clay bricks
Practical Action
MONITORING FORM: Energy consumption of brick firing processes
Name of producer
Location/address
Dates and times of firing
Start
Finish
Type of clamp/kiln
Type of fuel
Mass of fuel used (kg)
Calorific value (kJ/kg)
Gross
Net
Moisture content (%)
Brick moisture content (%)
No. of green bricks in kiln
Method of forming
Mass per brick (kg)
green
dry
fired
Weather conditions
Calculation of kiln efficiency
Mass of green brick (kg)
Mass of dry brick (kg)
Total moisture content (kg)
Drying energy (kJ)
Total energy (kJ)
Firing energy (kJ)
Mass of fired brick (kg)
Specific firing energy (kJ/kg)
Comments
Qualifying information:
(i) Soil vitrification category
(ii) Holdcroft Bar temp. or
Buller's Ring no.
And/or
(iii) Avg. firing temp. (°C)
(iv) Firing time (hrs)
Signature, date, organisation & contact address
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