AUTOFLAME Mk7 User Manual

Efficiency Equations for Bottom Blowdown Losses
Constants:

NaturalGasConstan
t
K
1
0.38
FuelOilConstan
t
K
2
0.0083
AmbientAirTemperature T
A
 77degF󰇛25degC󰇜
FlueGasTemperature T
G
 392degF󰇛200degC󰇜
CO
2
 10.5%
Efficiency100
󰇩
󰇟



󰇛




󰇜
󰇠


󰇛

󰇛1121.4󰇛



󰇜
󰇪


Efficiency100
󰇩
󰇟
0.38
󰇛
20025
󰇜
󰇠
10.5
󰇛0.0083󰇛1121.4󰇛20025󰇜
󰇪


Efficiency100
󰇩
󰇟
66.5
󰇠
10.5
󰇛0.00831296.4󰇜
󰇪


Efficiency100
󰇟
6.3310.76
󰇠

Efficiency82.91%


NetEfficiencyUsefuelInput󰇛StandingLossesBlowdownLosses󰇜
NetEfficiency82.91%–󰇛1%3%󰇜
NetEfficiency78.91%

GrossHeatInputintoBoiler25,000,000/

NetHeatInputintoBoiler25,000,00078.91%
NetHeatInputintoBoiler19,727,500/


GrossInput25,000,000/
GrossInput7,321.87

1£0.034

FuelCost£248.94/


Energyrequiredtoraise1lbsteamfrom180
o
Fto327
o
F1040BTU

,,
,/
18,968.75/

FuelCost£13.12/1000





5 Bottom Blowdown
Page 92
Mk7 Manual: Expansion Board Set-Up Guide
October 2014

AUTOFLAME Mk7 Specifications

General

Brand	AUTOFLAME
Model	Mk7
Category	Measuring Instruments
Language	English