STEAM TURBINE PERFORMANCE
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TABLE XVI.
TESTS ON 400 Kw. (580 H. P.) WESTINGHOUSE-PARSONS TURBINE.*
Initial Super. Steam Used per Hour. Brake Pressure, heat, Vacuum, Horse Ib. sq. in. Degrees Inches. Gauge. F. Power. Pounds Total Pounds. per B. XI. P. Results with Approximately 1000 F. Super heat. 31% Overload.. Full Load (Overload).. 77% Load... 41% Load... 150 101 27.10 758.9 9157 12.07 158 100 27.06 594.6 781 12.41 154 104 27.10 145.3 5728 12.86 153 87 27.10 289.9 8500 14.62 Results with Approximately 1800 F. Super heat. 8% Overload.... Full Load (2% Overload)... 151 154 183 27,00 181 27.10 762.6 8520 11.17 592.8 6779 11.45 Results with Dry, Saturated Steam. 20% Overload.. 153 Full Load (9% Overload)... 154 77% Load 156 42% Load 155 26.87 728.4 9928 13.63 26.84 593.2 $249 18.91 20.80 448.0 6486 14.48 26.90 241.3 8876 16.06 Results with Dry Steam and Poor Vacuum. 20% Overload.. Full Load (2% Overload).. 152 155 25.90 694.8 9734 14.01 25.91 598.1 8514 14.85
With 1000 Superheat the speed of rotation was 3,547 R. P. M. at full load; at 81% overload it dropped 2.5% and at 41% load it increased 1.2%. With Dry Steam the speed was 3,545 R. P. M. at full load; at 26% overload it drop- ped 1.8 and at 42% load it increased 1.0%. With turbine running light speed increased 8.4%.
- Tests made at the works of the builders by Dean and Main in 1908.
