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Psychrometrics for HVAC: Concepts and Chart Applications

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Psychrometrics for HVAC: Concepts and Chart Applications

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5 hrs
-
English
703 views
Md Firan Mondal
Md Firan MondalLead HVAC Engineer | CEng, MIMechE, UK I CEng, KIVI, Europe I B.E (Mechanical) I Oil & Gas I HVAC Wind Platforms I Green Hydrogen I Blogger
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  • Session recordings included
  • Certificate of completion
Volume pricing for groups of 5+

Why enroll

People enroll in a psychrometrics for HVAC course to gain a deeper understanding of how air properties impact heating, cooling, and humidity control. Mastering the psychrometric chart enables professionals to accurately analyze and optimize HVAC system performance, design effective air handling processes, and ensure indoor comfort and energy efficiency. This knowledge is essential for engineers, technicians, and HVAC designers who want to advance their skills and make informed decisions in both residential and commercial applications.

Is this course for you?

You should take this if

  • You work in HVAC
  • You're a Mechanical Engineering professional
  • You prefer live, instructor-led training with Q&A

You should skip if

  • You need a different specialisation outside Mechanical Engineering
  • You need fully self-paced, on-demand content

Course details

Psychrometrics for HVAC involves the study of the thermodynamic properties of moist air and how they affect heating, cooling, and ventilation processes. Understanding psychrometric concepts is essential for accurately analyzing air conditioning systems, as it helps professionals assess how air behaves when it's heated, cooled, humidified, or dehumidified. Key properties include dry-bulb temperature, wet-bulb temperature, relative humidity, dew point, humidity ratio, and enthalpy. These are all represented on the psychrometric chart—a powerful tool that allows HVAC technicians and engineers to visualize air processes, such as sensible and latent heat changes, mixing of air streams, and determining the state of indoor air. By mastering psychrometrics and the chart’s applications, professionals can design more efficient systems, troubleshoot performance issues, and ensure optimal indoor air quality and comfort.

Course suitable for

Key topics covered

  • What is Psychrometry?

  • Atmosphere Air, Moist Air, Dry Air

  • What is Psychrometric Chart?

  • Formation from Molier Chart Saturation, Saturated & Unsaturated Air, Superheated Supersaturated air

  • Dry Bulb Temperature

  • Wet Bulb Temperature

  • Relative Humidity

  • Absolute Humidity

  • Specific Humidity & Humidity Ratio

  • Degree of Saturation

  • Dew Point Temperature

  • Specific Volume

  • Specific Enthalpy

  • Specific Entropy

  • Vapor Pressure

  • Bypass Factor

  • Contact Factor

  • How To Read A Psychrometric Chart

  • Calculation

  • Simple Heating

  • Simple Cooling

  • Cooling With Dehumidification

  • Heating With Humidification

  • Adiabatic Mixing Of Two Air Streams

  • Evaporative Cooling

  • Air Treatment Process

  • Air Conditioning in a Building

  • Calculation examples

Opportunities that await you!

Career opportunities

Training details

This is a live course that has a scheduled start date.

COMPLETED

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Questions and Answers

A: The right answer explains low leaving temperature without enough moisture removal by shifting the process line off the saturation curve; B raises humidity but wouldn't hold the coil at 12°C, C drives colder air not wetter air, and D usually drags the coil colder with more latent pickup rather than less.

A: The correct choice preserves constant moisture content during sensible reheat; B confuses temperature with moisture, C invents a correction without evidence, and D assigns a latent function to a component that can't remove moisture.

A: The right answer captures improved heat transfer pushing the process line toward the saturation curve; B flips cause and effect, C mixes up water-side velocity with air-side contact, and D assumes a flat response that doesn't exist during commissioning.

A: The correct value lands near typical comfort conditions; B doubles by misusing relative humidity, C undershoots by assuming linearity with temperature, and D mixes units and chart conventions.