Thermexcel Programme Psychrosi (Trusted Source)

PsychroSI’s iterative wet‑bulb algorithm yields errors of at most 0.1 °C, which is well within the uncertainty of most field measurements. The programme uses standard psychrometric relationships (e.g. the Magnus‑Tetens approximation for vapour pressure) and assumes that the total pressure is standard atmospheric pressure, unless a local barometric correction is manually applied. For most HVAC design work, this level of accuracy is perfectly adequate.

When fresh outdoor air mixes with recycled indoor return air, PsychroSI computes the resultant mixed air point. It subsequently calculates the heating or cooling load requirements needed to drive the air toward target space conditions. 2. Cooling and Dehumidification

[Outdoor Air] --\ +---> [Air Mixing Module] ---> [Cooling/Heating Coil] ---> [Humidifier] ---> Supply Air [Return Air] --/ Air Mixing & Simple Reheating thermexcel programme psychrosi

The program is available for purchase via the ThermExcel Order Form .

Imagine you are designing a dairy processing plant. You need to cool milk from 20°C to 4°C instantly. Or, consider an HVAC system in Athens during a July heatwave—you aren't just moving air; you are forcibly extracting heat (psychrosi). For most HVAC design work, this level of

Beyond basic point-state calculations, the PsychroSI suite includes specialized modules for complex HVAC processes:

: Study files are built as standalone, lightweight spreadsheets. Users can duplicate active calculation sheets to instantly simulate alternative designs or "what-if" operational scenarios side-by-side. For most HVAC design work

From a user's perspective, this means the interface is intuitive and familiar. The process is straightforward:

The programme is a specialized Excel-based software tool designed for HVAC engineers, researchers, and building designers to perform precise psychrometric calculations . The name "PsychroSI" is derived from psychrometrics (the study of moist air properties) and SI (International System of Units), though the software is often available in versions supporting US units as well. Core Functionality of PsychroSI