โ๏ธ Cooling Coil Psychrometrics
Calculate cooling coil sensible & latent loads, Apparatus Dew Point (ADP), bypass factor (BF), leaving air condition, and condensate drainage rates.
โก Fortran 90 Engine
Double Precision (IEEE 754)
โ ISO / ASME Validated
Hvac
๐ Solver Telemetry
โ ACTIVE
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โก Solves
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๐พ Downloads
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๐ฆ Fortran Code
4.4 KB
๐
Released
Jun 2026
โฑ๏ธ Latency
< 1 ms
โ๏ธ Psychrometric Cooling & Dehumidification Coil Process Line
Real-time visual psychrometric state points: Entering (1) โ Leaving (2) โ Apparatus Dew Point (ADP)๐ Configuration & Presets
๐ข Office Comfort (28ยฐC / 55%)
๐ด Tropical Monsoon (34ยฐC / 80%)
๐ฅ๏ธ Data Center (SHR > 0.95)
๐ฅ Hospital Operating Suite
Psychrometric Formulations:
โข Leaving DB: Tdb2 = ADP + BF ยท (Tdb1 โ ADP)
โข Total Capacity: Qtotal = mฬa ยท (hโ โ hโ) [kW]
โข Sensible Ratio: SHR = Qsens / Qtotal
โข Condensate Rate: mฬw = mฬa ยท (wโ โ wโ) ร 3600 [L/h]
โข Leaving DB: Tdb2 = ADP + BF ยท (Tdb1 โ ADP)
โข Total Capacity: Qtotal = mฬa ยท (hโ โ hโ) [kW]
โข Sensible Ratio: SHR = Qsens / Qtotal
โข Condensate Rate: mฬw = mฬa ยท (wโ โ wโ) ร 3600 [L/h]
๐ Coil Performance Results
Configure inputs and click Compute to view results.
๐ Calculation Methodology & ASHRAE Standards
Apparatus Dew Point & Bypass Factor
The portion of air that passes untouched through fin spaces is represented by the Bypass Factor $BF$. The condition curve connects state 1 directly toward $ADP$:
Tdb2 = ADP + BF ยท (Tdb1 โ ADP)
Sensible Heat Ratio & Dehumidification
When the coil surface temperature $ADP < T_{dew1}$, simultaneous cooling and moisture condensation occur. Deeper 6โ8 row coils achieve $BF \le 0.08$ for deep moisture removal.
Key Engineering Assumptions
- Standard atmospheric pressure $P = 101.325\,\text{kPa}$.
- Ideal gas mixture thermodynamics for dry air and water vapor.
- Chilled water specific heat $c_p = 4.186\,\text{kJ/(kgยทK)}$.