Practice Hr: Humidity Ratio (2.1.4) - Psychrometry - Refrigeration and Air Conditioning
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HR: Humidity Ratio

Practice - HR: Humidity Ratio

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define the Humidity Ratio.

💡 Hint: Think about the measurement units for water and dry air.

Question 2 Easy

What does RH stand for?

💡 Hint: Consider what you measure in relation to saturation.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What measurement does Humidity Ratio (HR) express?

Mass of water vapor per mass of dry air
Dry air temperature
Wet air temperature

💡 Hint: Think about how it's measured.

Question 2

True or False: An increase in HR generally improves comfort in summer.

True
False

💡 Hint: Consider what humidity does to our perception of temperature.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

You have an air conditioning system that currently has an HR of 0.012 kg/kg. Describe how you would adjust the system to lower the HR to enhance feel in a summer setting while minimizing energy usage.

💡 Hint: Consider both temperature adjustments and moisture extraction techniques.

Challenge 2 Hard

Calculate the change in enthalpy if HR increases from 0.005 kg/kg to 0.015 kg/kg at a constant temperature of 25°C. What implications does this have on the cooling load?

💡 Hint: Examine the role of moisture in enthalpy through HVAC performance metrics.

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Reference links

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