HVAC Air Treatment Quiz
20 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the heat gain required to heat air in kW?

  • 9.84 kW
  • 35.42 kW
  • 12.35 kW (correct)
  • 12.35 kJ
  • What is the heat loss required to cool air in kW?

  • 15.69 kW (correct)
  • 35.42 kJ
  • 47.38 kW
  • 13.16 kW
  • What is the condensate flow rate in g/s for the given scenario?

  • 9.07 kg/s
  • 6.79 kg/s (correct)
  • 9.07 g/s
  • 0.00 g/s
  • What is the absolute humidity after mixing air streams in g/kgas?

    <p>6.30 g/kgas</p> Signup and view all the answers

    Which of the following values represents the condensate flow rate in the alternative case?

    <p>9.07 g/s</p> Signup and view all the answers

    Which heat recovery device can also recover some of the evaporated water vapor?

    <p>Wheel heat exchanger</p> Signup and view all the answers

    Which air treatment component is typically sized to bring saturated air to a state of humidity saturation?

    <p>Vapor humidifier</p> Signup and view all the answers

    In which air treatment component can electrodes be found?

    <p>Electrically heated coil</p> Signup and view all the answers

    Which air treatment component exhibits an isothermal process?

    <p>Cooling coil</p> Signup and view all the answers

    Which air treatment component can be used to reduce humidity in a controlled manner?

    <p>Adsorption wheel</p> Signup and view all the answers

    Why is regulating the temperature of mixed air (heated and cooled) by mixing components discouraged?

    <p>Causes systematic energy waste</p> Signup and view all the answers

    What cooling power is needed for a cooling coil to lower 620 m³/h of 35°C air to 15°C?

    <p>3.98 kW</p> Signup and view all the answers

    What air treatment device tends to lower the relative humidity of humid air?

    <p>Cold battery</p> Signup and view all the answers

    At 1000m³/h entering at 10°C and 50% RH through a 10kW hot battery, what is the expected exit temperature?

    <p>28.62°C</p> Signup and view all the answers

    Which combination of air treatment devices is most effective at lowering absolute humidity?

    <p>Hot battery + cold battery</p> Signup and view all the answers

    What is the main purpose of a bypass register in a plate heat exchanger?

    <p>Increasing airflow through the GPGE or CTA</p> Signup and view all the answers

    What role does glycol play in hot water heating systems?

    <p>Lowering the freezing point of the water</p> Signup and view all the answers

    What heating capacity is necessary for an electric heater to heat 2000m³/h of air from 10°C at 50% RH to 10°C and 25% RH?

    <p>3.62 kW</p> Signup and view all the answers

    Why is a vapor humidifier used in HVAC systems?

    <p>To add moisture to the air</p> Signup and view all the answers

    What happens to air when it passes through a cold battery in terms of temperature and humidity?

    <p>Temperature decreases and humidity decreases</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser