Gas Performance
Gas Rate
Regulations
Gas Supply
Safety Devices and Controls
Pipework
Ventilation
Unsafe Situations
Commissioning
Gas Performance
Gas Pipework
Chimney and Flue
Combustion
Boilers
Gas Rate Check
- amount of gas being burned by an appliance
- whether an injector is blocked or oversized
- 5% tolerance is allowed against the data badge readings on the appliance
Convert ft3 into kW
- 1 m3 = 35.336 ft3
- 1 unit of gas (100 ft3) = 2.83 m3
- Calorific Value = 38.5
- kW = (reading in ft3/100) x 2.83 x 38.5/3.6(const.)
Calorific Value (CV)
- Calorific Value - the volume of gas consumed by the appliance in one hour
- Natural gas - 38.6MJ/m3 Gross or 1040btu/ft3
- Propane average - 93.1MJ/m3 Gross or 2694btu/ft3
- Butane average - 121.8MJ/m3 Gross or 3265btu/ft3
- 1kW = btu/3412
- Wobbe Number - is an indication of heat produced from a burner:
- WN = CV/√SG(Specific gravity)
