| The following figures relate
specifically to the period until 1st May 1929 and concentrate particularly
on the installation of what at the time was called the High Pressure
section. Subsequently this became known as the Medium Pressure section.
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| The Boiler Plant |
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| Stirling 5 Drum Boilers 9 & 10 - Installed 1928 - 1929 |
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| Induced Draft Fan |
1 |
|
| Heating Surface |
7,437 |
square feet |
| Evaporation Rate (greater than) |
40,000 |
lb per hour |
| Feed Water Inlet Temperature |
100 |
°F |
| Steam Pressure |
265 |
lb per square inch |
| Steam Final Temperature |
650 |
°F |
| Steam Drum Diameter |
42 |
ins |
| Steam Drum Length |
17' 1 |
ft ins |
| Water Drum Diameter |
36 |
ins |
| Boiler Tubes - Diameter - No 9 Wire Gauge |
3¼ |
ins |
| Chain Grate Stokers (2 off) - Babcock and Wilcox |
16 x 6 |
ft (l x w) |
| Economiser Tubes - 160 off Cast Iron |
12 |
ft (l) |
| Flue Stack Diameter |
4' 9 |
ft ins |
| Flue Stack Height |
60 |
ft |
| Coal Bunkers (Split in two for coal and coke) |
50 |
tons |
| Feed Water Tank - Two Compartments - heated by
exhaust steam |
15 |
ft head |
| Steam Turbine Feed Pumps (2 off) -
exhaust to FW tank |
120,000 |
lbs water per hour |
| Electric Feed Pump - feed either Boiler Group |
80,000 |
lbs water per hour |
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| Stirling 5 Drum Boilers 5 to 8 - Similar design -
Installed 1924 - 1926 |
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| Induced Draft Fan (shared by two boilers) |
1 |
per 2 boilers |
| Evaporation Rate |
25,000 |
lbs per hour |
| Feed Water Inlet Temperature |
100 |
°F |
| Steam Pressure |
165 |
lb per square inch |
| Final Steam Temperature |
540 |
°F |
| Flue Stack Diameter (shared by two boilers) |
5 |
ft |
| Flue Stack Height |
90 |
ft |
| Feed Water Tank - Two Compartments - heated by
exhaust steam |
15 |
ft head |
| Steam Turbine Feed Pumps (2 off) - exhaust to FW
tank |
100,000 |
lbs water per hour |
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| The Turbine Plant |
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| British Thomson-Houston Turbo-Alternator No 5
Installed 1929 |
7,500 |
kilowatt 90% pf |
| RPM - Curtis Impulse Wheel design |
3000 |
rpm |
| Phases |
3 |
phase |
| Periodicity |
50 |
cycles per second |
| Terminal Voltage |
11,000 |
volts |
| Steam Inlet Pressure |
250 |
lb per square inch |
| Steam Inlet Temperature |
650 |
°F |
| Exhaust Back Pressure (Vacuum) |
1.25 |
ins of mercury |
| Steam Consumption 90% Power Factor 7500 kw MCR |
10.73 |
lb per KW hr |
| Steam Consumption 90% Power Factor 6000 kw ECR |
10.69 |
lb per KW hr |
| Steam Consumption 90% Power Factor 4500 kw |
10.97 |
lb per KW hr |
| Steam Consumption 90% Power Factor 3000 kw |
11.63 |
lb per KW hr |
| Turbo-alternator weight (ex condenser) |
95 |
tons |
| Protective Reactance |
15 |
per cent |
| Tirril Automantic Voltage Regulator |
±1 |
per cent |
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| British Thomson-Houston
Turbo-Alternators No 3 & 4 Installed 1924 & 1926 |
3,750 |
kilowatt |
| Terminal Voltage |
11,000 |
volts |
| Steam Inlet Pressure |
150 |
lb per square inch |
| Steam Inlet Tempersture |
540 |
°F |
| Exhaust Back Pressure (Vacuum) |
1.5 |
ins of mercury |
| Steam Consumption 90% Power Factor 3750 kw MCR |
12.93 |
lb per KW hr |
| Steam Consumption 90% Power Factor 3000 kw ECR |
12.89 |
lb per KW hr |
| Steam Consumption 90% Power Factor 2250 kw |
13.28 |
lb per KW hr |
| Steam Consumption 90% Power Factor 1500 kw |
14.08 |
lb per KW hr |
| Steam Consumption 90% Power Factor 750 kw |
16.52 |
lb per KW hr |
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| British Thomson-Houston Turbo-Alternators No 1 & 2
- Ex Torquay 1924 |
1250 |
kw |
| Steam Inlet Pressure |
150 |
lb per square inch |
| Steam Inlet Temperature (via a de-superheater) |
500 |
°F |
| RPM |
3000 |
rpm |
| Phases |
1 |
phase |
| Terminal Voltage |
2000 |
volts |
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| Condensing Plant -
Generator 5 |
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| Steam Condensed per hour |
64,100 |
lb per hour |
| Cooling Surface Area |
6,780 |
square ft |
| Vacuum at Exhaust Inlet |
28¾ |
ins |
| Circulating Water |
405,000 |
gals per hour |
| Circulating Water Inlet Design Temperature |
60 |
°F |
| Extraction Pump |
6.8 |
BHP |
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| Riverside Pumps |
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| No 1 Pump House - 3 pumps - Turbo-Alternators 1 - 4
inclusive |
150,000 |
gals per hour each |
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| No 2 Pump House - 2 pumps - Turbo-Alternator 5 and
future extensions |
500,000 |
gals per hour each |
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