An air water system was analysed and found to have a dry bulb temperature of 30 0C content of 210 grains of water per lb dry air. Percent relative humidity is a. 31 b. 60 c. 40 d. 53 The system has an approximate saturated enthalpy of ___ Btu/lb dry air. a. 52.63 b. 64.69 c. 75.50 d. 87.30

An air water system was analysed and found to have a dry bulb temperature of 30 0C content of 210 grains of water per lb dry air. Percent relative humidity is a. 31 b. 60 c. 40 d. 53 The system has an approximate saturated enthalpy of ___ Btu/lb dry air. a. 52.63 b. 64.69 c. 75.50 d. 87.30

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

Chapter50: Commercial, Packaged Rooftop, Variable Refrigerant Flow, And Variable Air Volume Systems

Section: Chapter Questions

Problem 3RQ: Mixed air is best described as the combination of A. exhaust air and return air. B. return air and...

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Question

An air water system was analysed and found to have a dry bulb temperature of 30 ⁰C content of 210 grains of water per lb dry air.

Percent relative humidity is

a. 31 b. 60 c. 40 d. 53

The system has an approximate saturated enthalpy of ___ Btu/lb dry air.

a. 52.63 b. 64.69 c. 75.50 d. 87.30

The humid volume of the air-water mixture is ____ cubic feet per pound of dry air.

a. 12.3 b. 16.4 c. 15.6 d. 17.8

At ___ F the mixture will show its first condensate.

a. 65.5 b. 72.3 c. 98.7 d. 88.9

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