In industrial factory environment control systems, the selection of air conditioning units directly impacts the comfort of the production environment, the stability of equipment operation, and the cost of energy consumption. ForA 3,000-square-meter factory, equipped with a water-cooled air conditioning system, has become the top choice for many businesses due to its high efficiency and stability.
Precision Calculation: Determining Factory Cooling Load Requirements
Cool Load Calculation Method
Unlike conventional area calculation methods, industrial factory buildings should employ a more scientific volume calculation method:
Basic Formula: Factory Volume (m³) × Cooling Requirement per Cubic Meter (W/m³)
Standard Parameters: ForA 3,000-square-meter factory building, with an assumed height of 8 meters, has a total volume of 24,000 cubic meters.
Load Estimation: Standard warehouse or assembly workshop, byAt a rate of 75W/m³, the total cooling load is approximately 1800kW (equivalent to about 512 tons of cooling).
2. Load Factor Correction Factor
Equipment Cooling: Based on the rated power of the equipment860W/kW Calculation
Personnel Heat Dissipation: Approximately 1 person dissipates heat100W
Lighting Heat Dissipation: Calculated based on actual lighting power
Thermal Conductivity in Building: Consideration of Wall and Roof Coefficients
Safety Redundancy: Recommend Adding to Calculated Values10%-20% remaining inventory
Environmental Requirements: Clearly Define Production Process Needs
Different industries have specific requirements for factory environments, which directly impact system selection.
1. Temperature and humidity accuracy
Standard Requirements:±2°C/±10%RH (Standard Storage, Rough Processing)
Precision Control:±1°C/±5%RH (Electronics Manufacturing, Precision Instruments)
High-Precision Control:±0.5℃/±3%RH (Pharmaceuticals, Biotechnology)
2. Air Quality
Cleanliness Grade: As perISO 14644 standard determines the corresponding grade
Explosion-proof requirements: Special environments such as chemical industry and painting require explosion-proof designs.
Corrosion Resistance: Special materials are required for high humidity or corrosive environments.
Section 3: System Composition: An In-depth Look at the Core Components of Water-Cooled Air Conditioning
Chiller unit selection
Screw-type water chiller, suitable for200-1,000 tons cooling capacity, high stability, smooth operation, long lifespan, easy maintenance; the drawback is the higher initial investment.
Centrifugal chilled water unit, suitable for500-ton-plus large-scale projects with high energy efficiency ratios and large single-unit capacity; limitation is the decrease in partial load efficiency.
Modular chillers, suitable for100-500 tons cold, flexible expansion, staged investment, easy installation; limitation is relatively lower energy efficiency.
Cooling Tower Selection
Open Cooling Towers: High heat exchange efficiency, low cost, but with high water quality requirements.
Closed Cooling Tower: Clean water quality, low maintenance, but high initial investment.
Crosscurrents and Counterflows: Choosing Based on Venue Layout and Noise Requirements
3. Air Conditioning Terminal Selection
Combination Air Conditioning Units: High airflow, high excess pressure, ideal for large-scale workshops.
Fan coil units: Flexible zoning control, suitable for office areas
Positioned Air Supply System: Significant Energy-Saving Effect for Specific Workstations
Four: Energy Efficiency Optimization: Reduce the total lifecycle cost
Energy Efficiency Indicator Analysis
COP (Coefficient of Performance): Typically, water-cooled chillers range from 4.0 to 6.0.
IPLV Value (Integrated Part Load Value): A measure of the energy efficiency of variable-speed units under part-load conditions.
EER Ratio (Energy Efficiency Ratio): The energy efficiency index for terminal equipment
2. Energy-saving Technology Applications
Variable Frequency Control: Adjusts the speed of compressors, water pumps, and fans based on load, achieving energy savings.30%-50%
Heat Recovery Technology: Reclaim condensation heat for process heating or domestic hot water
Free Cooling: Utilize Natural Outdoor Air Cooling During Transition Seasons
Intelligent Control: Optimizing Operation Strategies Based on Big Data Predictions of Load Changes
