Psychrometry - Refrigeration and Air Conditioning
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

Psychrometry

Psychrometry

The chapter encompasses the classification, nomenclature, and applications of air-conditioning systems, delving into the principles of psychrometry and the psychrometric properties of air. It highlights the processes that air-conditioning systems utilize and the importance of psychrometric charts in analyzing these systems. Understanding psychrometry is presented as essential for optimizing comfort, product quality, and energy efficiency in various applications.

55 sections

Enroll to start learning

You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.

Sections

Navigate through the learning materials and practice exercises.

  1. 1
    Classification Of Air-Conditioning Systems

    Air-conditioning systems can be classified based on function, seasonal...

  2. 1.1

    This section classifies air-conditioning systems based on their function,...

  3. 1.1.1
    Comfort Air-Conditioning

    This section covers the classification, terminology, applications,...

  4. 1.1.2
    Industrial Air-Conditioning

    Industrial air-conditioning systems focus on maintaining specific...

  5. 1.2

    This section discusses the classification of air-conditioning systems based...

  6. 1.2.1
    Summer Ac System

    This section details the classification of air-conditioning systems,...

  7. 1.2.2
    Winter Ac System

    The winter air conditioning system focuses on adding heat and humidity to...

  8. 1.2.3
    Year-Round System

    Year-round air-conditioning systems automatically switch between heating and...

  9. 1.3
    By Cycle Type

    This section categorizes air-conditioning systems based on their cycle type...

  10. 1.3.1
    Direct Expansion (Dx) Systems

    Direct Expansion (DX) Systems are a type of air-conditioning system where...

  11. 1.3.2
    Chilled Water Ac Systems

    Chilled water air conditioning systems utilize chilled water produced by...

  12. 1.4
    By Equipment Distribution

    This section discusses the classification of air-conditioning systems based...

  13. 1.4.1
    Central Ac System

    This section covers the classification, features, and applications of...

  14. 1.4.2
    Unitary (Room) Ac System

    The unitary (room) AC system is a self-contained cooling unit designed for...

  15. 2
    Ashrae Nomenclature

    This section introduces the ASHRAE nomenclature, defining standard...

  16. 2.1
    Common Terms

    This section defines essential terminology related to air conditioning and...

  17. 2.1.1
    Dbt: Dry Bulb Temperature

    This section focuses on the concept of Dry Bulb Temperature (DBT), its...

  18. 2.1.2
    Wbt: Wet Bulb Temperature

    Wet Bulb Temperature (WBT) is an essential psychrometric concept...

  19. 2.1.3
    Rh: Relative Humidity

    This section explores the concept of relative humidity (RH), its...

  20. 2.1.4
    Hr: Humidity Ratio

    The section introduces the concept of Humidity Ratio (HR) in psychrometry,...

  21. 2.1.5
    Enthalpy (H)

    Enthalpy (h) represents the total heat content per kg of dry air and is a...

  22. 2.1.6
    Dpt: Dew Point Temperature

    The section discusses Dew Point Temperature (DPT), which is the temperature...

  23. 3
    Applications Of Air-Conditioning

    Air-conditioning systems serve both comfort and industrial applications,...

  24. 3.1
    Comfort Applications

    Comfort applications of air-conditioning systems focus on maintaining...

  25. 3.1.1
    Homes, Offices, Malls, Cinema Halls

    This section discusses the classification and applications of...

  26. 3.1.2
    Large-Scale Buildings

    This section discusses the classification, applications, and psychrometry of...

  27. 3.2
    Industrial Applications

    This section discusses the classification and applications of...

  28. 3.2.1
    Textile Mills

    Textile mills require specific air-conditioning systems to control humidity...

  29. 3.2.2
    Pharmaceuticals

    This section discusses the role of air-conditioning systems in the...

  30. 3.2.3

    Clean rooms are specialized environments designed to control contamination...

  31. 3.2.4
    Cold Storage

    Cold storage refers to the use of refrigeration technology to preserve...

  32. 4
    Psychrometry – Air-Water Vapor Mixtures

    Psychrometry is the study of moist air properties, crucial for understanding...

  33. 4.1

    This section discusses the assumptions relevant to psychrometry and air...

  34. 5
    Psychrometric Properties Of Air

    This section provides an overview of psychrometric properties of air,...

  35. 5.1
    Property Symbol Description

    This section outlines the fundamental properties of air relevant to...

  36. 5.1.1
    Dry Bulb Temperature

    Dry bulb temperature (DBT) is the actual air temperature measured by a...

  37. 5.1.2
    Wet Bulb Temperature

    Wet Bulb Temperature (WBT) is vital for understanding the evaporative...

  38. 5.1.3
    Relative Humidity

    Relative humidity (RH) is the measure of moisture content in the air...

  39. 5.1.4
    Dew Point Temperature

    The Dew Point Temperature represents the critical temperature at which air...

  40. 5.1.5
    Humidity Ratio

    The humidity ratio, or specific humidity, is the measure of the mass of...

  41. 5.1.6

    This section provides an in-depth understanding of enthalpy within the...

  42. 5.1.7
    Specific Volume

    This section covers the classification of air-conditioning systems based on...

  43. 6
    Psychrometric Or Air-Conditioning Processes

    This section covers the processes involved in psychrometry and...

  44. 6.1
    Key Air-Conditioning Processes

    This section covers the primary air-conditioning processes, emphasizing...

  45. 6.1.1
    Sensible Heating

    Sensible heating is a critical concept in understanding how air conditioning...

  46. 6.1.2
    Sensible Cooling

    Sensible cooling is the process of decreasing the air temperature while...

  47. 6.1.3
    Latent Heating

    This section explores latent heating, a crucial concept in air conditioning,...

  48. 6.1.4
    Dehumidification

    Dehumidification is a critical air-conditioning process that removes...

  49. 6.1.5
    Humidification

    Humidification is a crucial process in air conditioning that involves adding...

  50. 6.1.6
    Cooling And Dehumidifying

    This section discusses the significance of cooling and dehumidifying in air...

  51. 6.1.7
    Heating And Humidifying

    This section covers the essentials of heating and humidifying in...

  52. 6.1.8
    Mixing Of Air Streams

    This section discusses the mixing of two air streams within air conditioning...

  53. 7
    Psychrometric Chart

    This section focuses on the Psychrometric Chart, which graphs the properties...

  54. 7.1
    Key Features

    This section covers the classification, terminology, applications, and...

  55. 7.2

    This section explores the classification, terminology, applications, and...

What we have learnt

  • Air-conditioning systems can be categorized by function, season, cycle type, and equipment distribution.
  • ASHRAE provides standardized terminology and guidelines critical for HVAC systems.
  • Psychrometric properties are essential for understanding the behavior of moist air and its application in air-conditioning processes.

Key Concepts

-- Comfort AirConditioning
A system designed to maintain suitable temperature, humidity, and air quality for human comfort.
-- Psychrometry
The study of properties related to moist air, particularly the mixture of dry air and water vapor.
-- Wet Bulb Temperature (WBT)
The temperature measured by a thermometer with a wet wick, indicating the potential for evaporative cooling.
-- ASHRAE Nomenclature
Standardized terms published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers for defining HVAC principles.
-- Psychrometric Chart
A graphical representation of the properties of moist air, typically used to analyze and design air conditioning systems.

Additional Learning Materials

Supplementary resources to enhance your learning experience.