4. A grain drier requires 12,000 cu ft per min of 115°F air. The atmos- pheric air is at 75°F and 68 per cent relative humidity. How many British thermal units per hour are required to heat the air?

4. A grain drier requires 12,000 cu ft per min of 115°F air. The atmos- pheric air is at 75°F and 68 per cent relative humidity. How many British thermal units per hour are required to heat the air?

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

Chapter3: Refrigeration And Refrigerants

Section: Chapter Questions

Problem 31RQ: Define a near-azeotropic refrigerant blend, and give twoexamples.

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4. A grain drier requires 12,000 cu ft per min of 115°F air. The atmos-
pheric air is at 75°F and 68 per cent relative humidity. How many
British thermal units per hour are required to heat the air?

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