In cell A10, type: =Psychro("CoolingCoil", T_db1, W1, T_adp, BPF)
While the term "psychrosi" is less common in everyday English HVAC discourse, it derives from the Greek psychros (cold) and is used internationally to describe the simultaneous of air. This process occurs when air passes over a cooling coil whose surface temperature is below the dew point of the air. thermexcel programme psychrosi
For psychrosi, where you often need to iterate coil ADP to meet a target leaving humidity, ThermExcel’s built-in Goal Seek feature is invaluable. Example: "Find ADP such that W2 = 0.008 kg/kg." One critical insight from ThermExcel simulations is that after intense psychrosi, air leaves nearly saturated at a low temperature (e.g., 12°C, 95% RH). This air cannot be supplied directly to a comfort zone because it feels drafty and clammy. Therefore, the model should include a reheat coil . In cell A10, type: =Psychro("CoolingCoil", T_db1, W1, T_adp,
| Feature | Manual Chart | ThermExcel | | :--- | :--- | :--- | | | Takes 2–5 minutes per point | Instant | | Accuracy | Reading error up to 5% | Exact to 6 decimal places | | Iterations | Tedious (redrawing lines) | Automatic with goal-seek/Solver | | Batch processing | Impossible | Analyze 100s of conditions at once | | Cost | Free (if you have a chart) | Low-cost or free add-in | | Integration | None | Direct link to Excel cost models | Example: "Find ADP such that W2 = 0
Introduction In the world of heating, ventilation, and air conditioning (HVAC), precision is not just a luxury; it is a necessity. Engineers constantly grapple with the complex behavior of moist air—a mixture of dry air and water vapor. Among the various thermodynamic processes (heating, cooling, humidification, mixing), one stands out for its complexity and practical importance: Psychrosi .
The democratizes this analysis. By embedding psychrometric equations into Excel, it allows for rapid iteration, precise load calculations, and seamless integration with cost and energy models. Whether you are designing a hospital operating room requiring 50% RH, a data center needing strict dew-point control, or a tropical resort HVAC system, mastering ThermExcel for psychrosi will elevate your engineering precision.