5. A 25 MVA turbo-alternator is working on full load at a power factor of 0-8 and efficiency of 97%. Find the quantity of cooling air required per minute at full load, assuming that 90 % of the total losses are dissipated by the internally circulating air. The inlet air temperature is 20° C and the temperature rise is 30° C. Given that specific heat of air is 0-24 and that 1 kg of air occupies 0-8 m'. [890 m'/minute]
5. A 25 MVA turbo-alternator is working on full load at a power factor of 0-8 and efficiency of 97%. Find the quantity of cooling air required per minute at full load, assuming that 90 % of the total losses are dissipated by the internally circulating air. The inlet air temperature is 20° C and the temperature rise is 30° C. Given that specific heat of air is 0-24 and that 1 kg of air occupies 0-8 m'. [890 m'/minute]
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter40: Typical Operating Conditions
Section: Chapter Questions
Problem 14RQ: The compressor amperage of a 3-ton system operating on 230 V is approximately -A.
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![5. A 25 MVA turbo-alternator is working on full load at a power factor of 0-8 and efficiency of 97%. Find
the quantity of cooling air required per minute at full load, assuming that 90% of the total losses are
dissipated by the internally circulating air. The inlet air temperature is 20° C and the temperature rise is
30° C. Given that specific heat of air is 0-24 and that 1 kg of air occupies 0-8 m'. [890 m/minute]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd57d335e-b9b0-4c37-a221-197705cefa93%2Fd38fc85e-1588-4811-9e23-c350b98980bf%2Fd8owye_processed.jpeg&w=3840&q=75)
Transcribed Image Text:5. A 25 MVA turbo-alternator is working on full load at a power factor of 0-8 and efficiency of 97%. Find
the quantity of cooling air required per minute at full load, assuming that 90% of the total losses are
dissipated by the internally circulating air. The inlet air temperature is 20° C and the temperature rise is
30° C. Given that specific heat of air is 0-24 and that 1 kg of air occupies 0-8 m'. [890 m/minute]
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