๐ฌ๏ธ Indirect Evaporative Cooler Sizer (M-Cycle)
Size Maisotsenko Cycle (M-Cycle) dew-point indirect evaporative coolers: sub-wet-bulb cooling, dew-point effectiveness, COP > 25, and zero-humidity added sensible cooling.
โก Fortran 90 Engine
Double Precision (IEEE 754)
โ ISO / ASME Validated
Heat Exchangers
๐ Solver Telemetry
โ ACTIVE
๐๏ธ Views
20
โก Solves
17
๐พ Downloads
276
๐ฆ Fortran Code
4.1 KB
๐
Released
Jun 2026
โฑ๏ธ Latency
< 1 ms
๐ฌ๏ธ Maisotsenko Cycle Multi-Channel Dew-Point Evaporation
Real-time visual simulation: Product dry channel (sensible cooling) and counterflow wet evaporative channels๐ Configuration & Presets
๐๏ธ Desert Arid (40ยฐC / 18% RH)
๐ฅ๏ธ Datacenter Free-Cooling
๐ข Commercial Building DOAS
๐ญ Industrial Spot Cooling
Maisotsenko Dew-Point (M-Cycle) Formulation:
โข Product Air Outlet: Tout = Tdb,in โ ฮตdp ยท (Tdb,in โ Tdp) [ยฐC]
โข Wet-Bulb Effectiveness: ฮตwb = (Tdb,in โ Tout) / (Tdb,in โ Twb) > 100%
โข Sensible Cooling (Zero Humidity Added): Qฬ = แนproduct ยท cp ยท (Tdb,in โ Tout) [kW]
โข Energy Efficiency Ratio: COP > 25 (90% electricity reduction vs compressor AC).
โข Product Air Outlet: Tout = Tdb,in โ ฮตdp ยท (Tdb,in โ Tdp) [ยฐC]
โข Wet-Bulb Effectiveness: ฮตwb = (Tdb,in โ Tout) / (Tdb,in โ Twb) > 100%
โข Sensible Cooling (Zero Humidity Added): Qฬ = แนproduct ยท cp ยท (Tdb,in โ Tout) [kW]
โข Energy Efficiency Ratio: COP > 25 (90% electricity reduction vs compressor AC).
๐ Dew-Point Cooling Results
Configure inputs and click Compute to view results.
๐ Calculation Methodology & M-Cycle Standards
Maisotsenko Dew-Point Sub-Wet-Bulb Principle
By pre-cooling the working air before it enters the wet channels, the thermodynamic limit shifts from the ambient wet-bulb ($T_{wb}$) all the way to the ambient dew-point temperature ($T_{dp}$), yielding wet-bulb efficiencies exceeding $100\%$.
Sensible Cooling Without Humidity Addition
The product supply air stream never contacts the wet surface directly, delivering crisp, dehumidified-feel sensible cooling without increasing the indoor relative humidity.
Key Engineering Assumptions
- Counter-flow / cross-flow M-Cycle perforated dry-to-wet channel plate stack.
- Sub-wet-bulb psychrometric path with dew-point effectiveness $\epsilon_{dp} \approx 75 - 88\%$.
- Widely used in desert climate HVAC, datacenter free-cooling, and hybrid DOAS rooftop units.