AUTOFLAME Mk8 MM - Page 9

9 HEAT FLOW ......................................................................................................... 129
9.1 Overview ............................................................................................................................ 129
9.1.1 Benefits of Steam/Hot Water Flow Metering .............................................................. 129
9.1.2 Configuration .............................................................................................................. 129
9.2 Steam Flow Metering .......................................................................................................... 130
9.2.1 Steam Flow Calculation .............................................................................................. 130
9.2.2 Steam Flow ................................................................................................................. 134
9.2.3 Steam Flow with Economiser ...................................................................................... 135
9.2.4 Steam Flow with Deaerator ........................................................................................ 136
9.2.5 Steam Flow with Deaerator and Feed Sensor ............................................................ 137
9.3 Hot Water Flow Metering ................................................................................................... 138
9.3.1 Hot Water Flow Calculation ....................................................................................... 138
9.3.2 Hot Water Flow .......................................................................................................... 140
9.3.3 Hot Water Flow with Economiser ................................................................................ 141
9.4 Faults .................................................................................................................................. 142
10 FULLY METERED COMBUSTION CONTROL ............................................................ 143
10.1 Overview ............................................................................................................................ 143
10.1.1 Introduction ................................................................................................................. 143
10.1.2 Importance of Excess Air ............................................................................................ 143
10.2 Fully Metered Combustion Control Operation ................................................................... 144
10.2.1 Philosophy .................................................................................................................. 144
10.2.2 Firing Rate .................................................................................................................. 144
10.2.3 Control Process ........................................................................................................... 145
10.2.4 Mass Flow Meters ....................................................................................................... 146
10.2.5 Volume Flow Meters ................................................................................................... 146
10.3 Set-Up ................................................................................................................................. 147
10.3.1 Configuration .............................................................................................................. 147
10.3.4 Limitations ................................................................................................................... 148
10.3.5 Commissioning ............................................................................................................ 149
10.4 Faults ...................................................................................................................
............... 153