Cross-Fluted Cellulose Pad Test Section
Provides standard 100 mm thick corrugated pad media (1.0 m wide by 1.0 m high) with top distribution header.
Agricultural Engineering / Evaporative Pad Cooling
FREE TO EXPLORELABORATORY 31 · AGRICULTURAL ENGINEERING
Evaporative Cooling Pad Saturation Efficiency & Water Consumption Rate
Determine the cooling saturation efficiency and water evaporation rate of a cellulose wet-pad ventilation system under varying approach face air velocities. Explore interactive farm machinery simulation, irrigation hydraulics, and agricultural engineering telemetry.
FARM MACHINERY · SOIL & WATER · POST-HARVEST · STRUCTURES
Your virtual agricultural engineering laboratory.
WATER EVAPORATION RATE M_DOT_W—
FIELD & TEST CELL TELEMETRY
Ready to sample with Face Velocity v = 1.1 m/s.
Adjust Face Velocity v, then execute agricultural trial.
Agricultural engineering telemetry and biosystems states are evaluated rigorously using 64-bit IEEE 754 precision. Residuals reflect ordinary least-squares regression across successive observations. Continuous data structures support high-fidelity agricultural and environmental modeling.
Agricultural assumptions and boundary condition limits
The linear evaporation model is valid for the design operational velocity range of 0.5 to 2.0 m/s. Evaluated on a 100 mm thick cross-fluted cellulose pad (flute angle 45°/15°) at standard ambient conditions (35.0 °C dry-bulb, 22.0 °C wet-bulb). Face air velocity is controlled between 0.5 and 2.0 m/s with uniform top-header water distribution.
Agricultural apparatus & field instrumentation sensors.
Variable-Speed Centrifugal Exhaust Fan
Draws air through the wind tunnel to establish uniform face velocities from 0.5 to 2.0 m/s.
Aspirated Dry & Wet Bulb Psychrometers
Measures upstream and downstream psychrometric states with calibrated precision thermistors.
Water Recirculation Sump on Electronic Balance
Monitors net evaporative water consumption in real time with 1.0 gram gravimetric resolution.
Rotameter Water Flow Indicator
Monitors pad wetting water flow rate to ensure complete wetting above the minimum dry-out threshold.
Differential Pressure Inclined Manometer
Measures static pressure drop across the cooling pad in Pascals.
FOLLOW THE METHOD
A reason behind every step.
Determine the cooling saturation efficiency and water evaporation rate of a cellulose wet-pad ventilation system under varying approach face air velocities. Standardized parameter settings: 0.5, 0.8, 1.1, 1.4, 1.7, 2.0 m/s.
01
Pad Pre-Wetting and Saturation
Energize the recirculation pump for 20 minutes to thoroughly wet the cellulose pad until uniform water curtaining is established.
02
Initial Airflow Adjustment
Set the exhaust fan frequency drive to produce an approach face velocity of 0.5 m/s measured via multi-point pitot tube array.
03
Steady-State Conditioning
Operate the system for 10 minutes until downstream dry-bulb temperature reaches steady equilibrium.
04
Psychrometric and Gravimetric Logging
Record upstream and downstream dry-bulb and wet-bulb temperatures and log water reservoir mass depletion over a 15-minute window.
05
Face Velocity Increment Progression
Increment face air velocity to 0.8, 1.1, 1.4, 1.7, and 2.0 m/s, repeating gravimetric and psychrometric measurements at each stage.
06
Saturation Efficiency and Consumption Analysis
Calculate cooling saturation efficiency η_c = (T_db,in - T_db,out)/(T_db,in - T_wb,in) and plot evaporation rate m_dot_w against face velocity v_pad.
YOUR NOTEBOOK · 0 OBSERVATIONS
Turn measurements into agricultural engineering insight.
Points are your recorded observations. The solid regression line validates Evaporative Pad Cooling mathematical scaling.
LINEAR REGRESSION FIT · y = mx + b
m_dot_w = k_w · v_pad = 8.5000 · v_pad
| # | Pad Face Air Velocity v_pad (m/s) | Water Evaporation Rate m_dot_w (g/(min·m²)) | Pad face velocity v_pad (m/s) | Evaporation rate m_dot_w (g/(min·m²)) | Remove |
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