Application Y (Section 10.31) - Spirax Sarco B850-W-2 Guia De Inicio Rapido

15.1 Process values
List of process values used in the BEM:
Application A (Section 10.23 and Section 10.27)
P Steam heat flowrate.
D
qm Mass flowrate of steam.
D
qv Volume flowrate of steam.
D
Steam measured pressure (only for superheated or saturated steam with pressure
p
D
measurement).
Saturated steam temperature based on saturation curve (only for saturated steam
T
D
with pressure measurement).
c
Steam density.
r
D
h Steam enthalpy.
D
Pressure difference at orifice in differential pressure device (only if differential pressure
Dp
D
device was chosen).
Applications B (Section 10.25 and Section 10.29)
P Condensate heat flowrate.
W
q Condensate mass flowrate.
W
m
q Condensate volume flowrate.
W
v
T Condensate temperature.
W
Condensate density.
r
W
h Condensate enthalpy.
W
Application X (Section 10.30)
Qv Gas mass flowrate.
Pg Computed value

Application Y (Section 10.31)

Vb Measurement bottom blowdown valve input.
Pb Computed value bottom blowdown.
Vt Measurement TDS valve input.
Pt Computed value TDS blowdown.
Application Z (Section 10.32)
E% Computed value boiler efficiency.
46
15. Appendix
IM-P408-04 AB Issue 2