(a) Explanation The amount of moisture in the air remains constant as it flows through the heating section as process involves no dehumidification or humidification. ω 1 = ω 2 (I) Here, specific humidity at state 1 and 2 is ω 1 and ω 2 respectively. Express the mass flow rate of dry air. m ˙ a = ν ˙ 1 v 1 (II) Here, volume flow rate at inlet is ν ˙ 1 and specific volume at inlet is v 1 . Express the rate of heat supply in the heating section. Q ˙ in = m ˙ a ( h 2 − h 1 ) (III) Here, enthalpy at state 1 and 2 is h 1 and h 2 respectively. Conclusion: Refer Figure A-31, “psychometric chart at 1 atm total pressure”, and write the properties corresponding to dry bulb temperature of 10°C and relative humidity of 70% . h 1 = 23.45 kJ / kg dry air ω 1 = 0.005322 kg H 2 O / kg dry air v 1 = 0.8090 m 3 / kg dry air Substitute 0.005322 kg H 2 O / kg dry air for ω 1 in Equation (I). ω 2 = 0.005322 kg H 2 O / kg dry air Refer Figure A-31, “psychometric chart at 1 atm total pressure”, and write the properties corresponding to dry bulb temperature of 18°C and relative humidity of 100% . h 2 = 31.56 kJ / kg dry air Refer Figure A-31, “psychometric chart at 1 atm total pressure”, and write the properties corresponding to dry bulb temperature of 25°C and relative humidity of 45% (b) To determine The mass flow rate of steam required in the humidifying section.

9th Edition

ISBN: 9781266657610

Author: CENGEL

Publisher: MCG CUSTOM

See similar textbooks

Videos

Question

Chapter 14.7, Problem 131RP

(a)

To determine

The rate of heat supply in the heating section.

(b)

To determine

The mass flow rate of steam required in the humidifying section.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 14.7, Problem 130RP

Chapter 14.7, Problem 132RP

Students have asked these similar questions

4-105. Replace the force system acting on the beam by an equivalent resultant force and couple moment at point B. A 30 in. 4 in. 12 in. 16 in. B 30% 3 in. 10 in. 250 lb 260 lb 13 5 12 300 lb

Sketch and Describe a hatch coaming and show how the hatch coamings are framed in to ships strucure?

Sketch and describe hatch coamings. Describe structrual requirements to deck plating to compensate discontinuity for corners of a hatch. Show what is done to the deck plating when the decks are cut away and include the supporting members.

Chapter 14 Solutions

THERMODYNAMICS (LL)-W/ACCESS >CUSTOM<

Ch. 14.7 - What is the difference between dry air and...Ch. 14.7 - What is vapor pressure?Ch. 14.7 - What is the difference between the specific...Ch. 14.7 - Can the water vapor in air be treated as an ideal...Ch. 14.7 - Explain how vapor pressure of the ambient air is...Ch. 14.7 - Is the relative humidity of saturated air...Ch. 14.7 - Moist air is passed through a cooling section...Ch. 14.7 - How will (a) the specific humidity and (b) the...Ch. 14.7 - Prob. 9P Ch. 14.7 - Consider a tank that contains moist air at 3 atm...

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

The rate of heat supply in the heating section.

Solution Summary: The author explains the rate of heat supply in the heating section.

Videos

The rate of heat supply in the heating section.

The mass flow rate of steam required in the humidifying section.

Want to see the full answer?

Chapter 14 Solutions