35 t/h steam boiler fuel consumption

Release time:2018-09-07

There two methods for calculating fuel consumption, in residential central heating equipment. The first method is through the use of a smart thermostat that controls the HVAC equipment. The second method is through the use of an acoustic+vibration sensor that measures the timing of the combustion process.

A boiler of 35 t/h superheated steam feeds a steam turbine providing under operating a condensing a capacity of 10 MW. For economic reasons, it was given up cogeneration operation, the production watching only the electricity. In this case, the return and the fuel consumption respectively have become essential. Of particular importance has proven to be also wood quality, humidity representing key size. Quality of wood, as its humidity varies depending on the source and season. These considerations have led to the need for an assessment of the boiler efficiency by calculation, evaluation followed by experimental testing. Depending on the fuel consumption figures determined economic measures are taken to purchase fuel and for operating system .

In all cases, fuel consumption is calculated with the method below:

 fuel consumption is calculated with the method
methods of fuel consumption

The steam boiler has the following parameters:

Nominal flow, Dn =35 t/h; purge stream, Dp =0.03 Dn;

Nominal temperature, tn = 4500C;

Nominal pressure, pn = 40 bar;

The supply water temperature, te = 1100C;

The temperature of the combustion gas, tev =1900C;

Coefficient of excess air to escape, Ȝev = 1.50;

Preheating air temperature, Ct p0 cc 225 ;

Pressure of feed water, pecc 45 bar;

Drum pressure, ts = 43 bar;

Coefficient of excess air at burner, O pc 1.15;

The prior preheating temperature of the air,= 150C.