The program allows you to define a state of humid air by inputting just two parameters, which then automatically generates all other data points (Dry bulb, Wet bulb, Enthalpy, etc.).
Consider a small office building in a temperate climate. The engineer needs to:
is a specialized Microsoft Excel-based engineering software program developed by ThermExcel for calculating the thermodynamic properties of moist air (psychrometrics). Built entirely within the Excel VBA environment, this programmatic tool replaces manual psychrometric charts with instant, iterative calculations for complex air conditioning, heating, ventilation (HVAC), and indoor swimming pool thermal management projects. It is widely used by thermal engineers to model air handling systems, evaluate air mixing behaviors, and size equipment such as heating coils and chilled water batteries.
Assume we have outside or return air at:
: The program includes a built-in library of global weather data, which provides the standard climatic parameters required for dimensioning HVAC systems. Advanced Humidification Modeling thermexcel programme psychrosi
is designed to model various psychrometric processes, including:
The program uses successive mathematical approximations (iteration) to balance complex thermodynamic equations, achieving a strict precision threshold of . Custom Workbook Integration
For more specific pipe sizing or steam distribution, you might also look into complementary tools like ThermoVapor or HydroTherm module or the air mixing
Results are typically presented in tabular format within Excel, which can be exported or printed as professional engineering reports. Resources for Further Implementation The program allows you to define a state
Thermexcel Psychrosi is chosen for its technical depth and user-friendly interface. Here are its main features: 1. Accurate Load Calculation (ASHRAE Methods)
The foundational benefit of PsychroSI is its ability to map an entire thermodynamic state of humid air using . By entering any two properties, the program executes iterative algorithms to resolve all other relevant parameters: Dry Bulb Temperature ( Tdcap T sub d ) & Relative Humidity ( RHcap R cap H ) Dry Bulb Temperature ( Tdcap T sub d ) & Wet Bulb Temperature ( Twcap T sub w ) Dry Bulb Temperature ( Tdcap T sub d ) & Specific Moisture / Humidity Ratio ( ) Dry Bulb Temperature ( Tdcap T sub d ) & Enthalpy ( ) Relative Humidity ( RHcap R cap H ) & Specific Moisture ( ) Specific Moisture ( ) & Enthalpy ( ) Iterative Precision
programs, sizing, piping, HVAC, heating, air ... - ThermExcel
The most brilliant feature for psychrosi is the automatic dew point check. When you simulate cooling a surface, ThermExcel checks the surface temperature against the ambient dew point. If the surface is below the dew point? Red flag. The program tells you: "Warning: Condensation risk." Built entirely within the Excel VBA environment, this
Before using the ThermExcel programme for psychrosi, one must grasp the thermodynamics involved.
Unlike expensive proprietary software, ThermExcel leverages the universal accessibility of Excel, making professional-grade psychrometric analysis available on any laptop.
Because the program is built directly as a macro-enabled workbook for Microsoft Excel, it avoids the learning curve associated with standalone proprietary CAD/CAE tools.
Unlike standalone software, PsychroSI is built directly into Excel using . This ensures seamless integration with the spreadsheets engineers already use for costing, piping, and load estimation. Users simply fill in the relevant cells (input columns), and the calculations are generated automatically.
Determining the energy needed to treat air for comfort or industrial processes.