Burners configuration impact on the thermal effectiveness of the PTVM-100 (R)
hot water boiler

P.Stankov1, D.Markov1, Y.Dinkov2, V.Petrov3, D.Toporov1
1 Technical University - Sofia, Dept. of  Hydroaerodynamics an Hydraulic
Machines,
"Kliment Ochridski" No 8, 1000 Sofia, BULGARIA
2 Kozloduy Nuclear Power Plant, Training Center, 3321 Kozloduy, BULGARIA
3 Toplofkacia Sofia Plc., 23 Jastrebetz street, 1680 Sofia, BULGARIA

ABSTRACT

The paper deals with a numerical investigation of a hot water boiler PTVM 100 (
R ). The
specialized software developed by the authors is based on the Favre averaged
3-D
transport
equations closed with the standard (-( turbulent model. Magnussen's Eddy
Dissipation Model
and the Discrete Ordinates Method were used for modeling of the turbulent
combustion
processes and the radiative heat transfer, respectively. Two types of burner
configurations
are investigated: one, with six swirl type burners located in a row of three on
the two
opposite walls and the other with four jet type burners located diagonally two
by two on the
opposite walls. Numerical results obtained show more uniform distribution of
the
heat flux
on the furnace walls in case with four burners compared to the six burners
case.
As a result
the increasing of absorbed heat flux is more than 10%. The predictions
illustrate significant
impact of the burners configuration on the thermal effectiveness of the
investigated boiler.