Psychrometric Chart + Duct Calculator is a highly specialized HVAC engineering software application developed by FlyCarpet to simplify complex thermodynamic and airflow calculations. Built as a lightweight Windows application, it functions as an all-in-one digital alternative to traditional paper psychrometric charts and mechanical sliders (“ductulators”). 🗺️ Core Component 1: Psychrometric Chart Tool
This module analyzes the thermodynamic properties of moist air. Instead of manually plotting points on paper, users can instantly map out complete thermodynamic processes.
Precision Math: It treats air as an ideal gas and calculates water/vapor properties utilizing the industry-recognized IFC-67 formulation.
Dynamic Variable Solver: Users can hover their mouse over the digital chart to see live-updating values. Inputting any two known parameters automatically generates the rest of the core variables.
Process Modeling: The software simulates real-world air handler scenarios. It handles once-recycle and twice-recycle airflow processes under both summer cooling and winter heating conditions.
Interactive Controls: Users can press Up/Down buttons to visualize how a process shifts in real time. Charts can be printed or exported as high-resolution vector images (.wmf, .bmp, .jpg, .emf) for engineering submittals. 🌪️ Core Component 2: Duct Calculator Module
This module replaces physical slide-rule ductulators to size ventilation ductwork and manage fluid mechanics.
Dual Mediums: Unlike simple air calculators, it supports calculations for both air and liquid ducts.
Resistance Calculations: It computes flow friction loss and linear pressure drops across circular or rectangular networks.
Thermal Calculations: The tool factors in environmental heat exchange and adiabatic processes, allowing designers to account for ambient temperature impacts on duct runs.
Outer Heat Transfer Adjustments: It includes parameters to adjust the outer coefficient of heat transfer, typically ranging from 3 to 10+, to factor in wind conditions. ⚙️ Main Technical Features Platform
Windows desktop application (requires no network or browser limits). Customization
Full control over chart lines (type, width, color) and fonts. Constant Lines
Toggles specific overlays like constant specific volume and wet-bulb lines. Language Support
Built-in multi-language options for international design environments. Trial Mode Offered as a 30-day fully functional free trial. Commercial Price A commercial license costs $65 for up to 3 keys. 🛠️ Common Use Cases
Air Handling Unit (AHU) Design: Sizing heating, cooling, and dehumidification coils.
Mixing Plenum Calculations: Instantly plotting the resulting state when return air and fresh outdoor air blend.
Commercial Ventilation Layout: Ensuring commercial duct networks are properly sized to minimize fan energy consumption while delivering the necessary airflow volume.
If you are evaluating this software for a specific workflow, let me know what type of HVAC projects you design (residential, commercial, cleanrooms) or which specific calculation you hope to automate so I can guide you further. Simplify Complex HVAC Calculations. Improve … – Bry-Air
Save Time. BryCal consolidates all core HVAC calculations into a mobile-first experience, delivering speed, accuracy, and ease-of- www.bryair.com Psychrometric Calculator – CCC Engineering
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