WBT is used to determine the adiabatic saturation temperature. Wet-Bulb Temperature (WBT): It is the temperature recorded by a thermometer with a wet wick, which is exposed to moving air. This chart helps HVAC engineers and technicians analyze air conditioning processes and make informed decisions regarding air handling and conditioning.Ģ) Key Properties: The primary properties depicted on the psychrometric chart are:ĭry-Bulb Temperature (DBT): It represents the temperature of the air as measured by a standard thermometer. It displays various air properties, such as dry-bulb temperature, wet-bulb temperature, humidity ratio, and specific volume, on a set of intersecting axes. Since Carrier's contributions, the psychrometric chart has been refined and expanded upon by various researchers, organizations, and standards bodies such as ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) to become the essential tool it is in the HVAC industry today.ġ) Definition: The psychrometric chart is a graphical representation of the thermodynamic properties of moist air. His work revolutionized the understanding of air conditioning and provided the foundation for modern HVAC design and engineering practices. In 1904, Carrier created a chart to analyze and represent the properties of air in different states of humidity and temperature. The modern psychrometric chart, as we know it today, was primarily developed by Willis Carrier, an American engineer and the founder of Carrier Corporation, a prominent HVAC company. Understanding psychrometrics has been a game-changer in my career, so I'm happy to share the attached Insight Partners psych chart. Components – Coils, Heaters, Motors, etc.The word psychrometrics comes from the Greek psuchron meaning "cold,” and metron meaning "means of measurement.".Accessories – Humidifiers, Air Cleaners, HRUs, Fans, Filters, etc.HVACR Equipment, Components & Accessories.Electrical Theory, Circuits and Electronics.Manufacturer's Technical Information Links.Educational, Training & Reference Information.Physics, Thermodynamics, Fluid Flow and Combustion.Frequently Asked Questions About Submissions.How to Submit Links, Articles and Quiz Questions.Welcome to HVAC-Talk's Educational Forums.Educational Forums - Open for all in the industry.Pro's Forum: Tips 'n Tricks of the Trade.Pro's Forum: Building Science Discussions.Pro's Forum: Geo Thermal / Water Source.Pro Forum: Equipment Recalls and Bulletins **NEW.Pro Forum: Residential Refrigeration and Appliances **NEW.Pro Forum: Refrigerants and EPA regulations **NEW.How To Become a Pro and Rules For Pro Members.Carnak Zone/Locked Areas - For Professional Member Only.Going Green: Geo Thermal / Water Source.Energy Efficiency and Building Performance Discussion NEW.The ARPA Zone/Open Membership Discussion Forums.RULES for AOP - Owner Assistance and Contractors.Ask Our Pros-Owner Assistance - NO DIY advice will be given.Questions About Becoming A Professional Member? Step Inside.If you have any problems with the registration process or your account login, please contact support. We suggest not registering using an AT&T, BellSouth, AOL or Yahoo email address. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions.Īll this and much more is available to you absolutely free when you register for an account, so join our community today today!.Post photos, respond to polls and access other special features.Participate in over 40 different forums and search/browse from nearly 3 million posts.As a registered Guest you will be able to: To gain full access to our forums you must register for a free account. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions Welcome to, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R.By continuing to use the website, you consent to our use of cookies. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. We use cookies to improve your website experience.