CogenS™ — Chiller & Cooling Tower Module
Commercial Chiller Selection & Lifecycle Cost
Select and compare air-cooled and water-cooled chiller systems with integrated cooling tower analysis. Real manufacturer data, ASHRAE 90.1 compliance, and complete lifecycle cost modeling including water costs.
Why CogenS™
The Complete Chiller System. Analyzed as a Whole.
Chiller selection is rarely just about the chiller. Water-cooled systems require cooling towers that add cost, complexity, and water consumption. Air-cooled systems trade efficiency for simplicity. The right choice depends on your climate, load profile, and utility rates.
CogenS™ is the only tool that analyzes the complete chiller-cooling tower system as an integrated unit -- using real manufacturer data, local weather, and your actual utility tariff structure to reveal the true lifecycle cost.
Capabilities
Complete Chiller & Cooling Tower Analysis
Integrated analysis of the full cooling system -- chiller, cooling tower, and water costs.
All Major Chiller Types
Reciprocating, screw, scroll, centrifugal, and absorption chillers. Air-cooled and water-cooled configurations with ASHRAE 90.1 compliance (Path A and Path B) and performance metrics including COP, EER, kW/Ton, and IPLV.
Integrated Cooling Tower Analysis
Water-cooled chillers automatically include cooling tower specification -- open/closed circuit, centrifugal/axial fan, counterflow/crossflow. Proprietary CoolTools and YorkCalc performance models built in.
Climate-Driven Simulation
TMY weather data and 8,760-hour cooling load profiles for 30+ building types across 340+ cities. Wet bulb and dry bulb temperatures drive accurate chiller and cooling tower performance modeling.
Full Financial Analysis
NPV, IRR, TCO, and payback with pre-loaded CAPEX/O&M for both chiller and cooling tower equipment. Water/wastewater costs included for cooling tower makeup water analysis. 40+ currencies supported.
How It Works
The CogenS™ Chiller Design Process
5-step guided workflow -- cooling tower specs are integrated into the chiller step
Site Information
Location & load profiles
Utility Rates
Energy, water & demand
Chiller Specification
Chiller + cooling tower
Financials
Economic parameters
Run & Results
Execute & view report
Water-cooled chillers automatically include cooling tower specification. Optional two-types mode allows dual chiller configurations sharing a single cooling tower.
Signature Features
Everything You Need for Chiller Selection
Technoeconomic Engine
Complete lifecycle cost analysis for the combined chiller-cooling tower system with detailed financial projections over study periods up to 50 years.
Chiller Equipment Database
Reciprocating, screw, scroll, centrifugal, and absorption chillers from major OEMs. Performance curves with COP, EER, kW/Ton, part-load IPLV data.
Cooling Tower Database
Open and closed circuit towers, centrifugal and axial fans, counterflow and crossflow. Single-speed, two-speed, and variable speed control options with CoolTools and YorkCalc models.
Two-Types Mode
Unique to chillers: model dual chiller configurations (Chiller 1 + Chiller 2) sharing a single consolidated cooling tower system for complex installations.
Water Cost Analysis
Tiered water and wastewater billing for cooling tower makeup water. Fixed charges, volume tiers, and seasonal adjustments for complete operating cost visibility.
Professional Reports
Detailed reports with chiller and cooling tower performance charts, energy cost breakdowns, and multi-vendor comparison tables for stakeholder presentations.
See It In Action
CogenS™ Chiller Module Walkthrough
From chiller selection to cooling tower configuration and final TEA report.
Chiller Specification
Select chiller type, condenser type, manufacturer, and model from the equipment database.
Cooling Tower Config
Automatically configured for water-cooled chillers -- tower type, fan, flow pattern, and vendor selection.
TEA Report & Charts
Combined chiller and cooling tower lifecycle cost analysis with energy and water cost breakdowns.
Multi-Vendor Comparison
Side-by-side chiller manufacturer analysis with COP, IPLV, and total cost metrics.
Built For You
Designed for Energy Professionals
For any professional involved in chiller system selection and cooling plant design.
Mechanical & HVAC Engineers
Select the optimal chiller-cooling tower combination with full lifecycle cost analysis. Compare air-cooled vs water-cooled with real performance data.
Facility Engineers & Energy Managers
Justify chiller replacement and retrofit investments with data showing long-term energy savings, water costs, and total cost of ownership.
Energy Consultants & ESCOs
Provide clients with robust chiller system analysis comparing technologies, condenser types, and manufacturers with defensible lifecycle cost projections.
Project Developers & Property Owners
De-risk chiller investments by validating equipment selection and total system cost -- including cooling tower and water expenses -- before committing capital.
Why It Matters
Solving the Hardest Parts of Chiller Selection
Air-Cooled vs Water-Cooled
Air-cooled chillers are simpler but less efficient. Water-cooled chillers perform better but add cooling tower cost, water consumption, and maintenance. CogenS™ models the complete system economics for both options.
Part-Load Performance
Chillers rarely operate at full load. Real-world savings depend on part-load efficiency (IPLV) which varies dramatically by compressor type. CogenS™ uses manufacturer-specific performance curves for accurate annual energy modeling.
Cooling Tower Water Costs
Water-cooled systems incur significant water and wastewater costs for makeup water. CogenS™ includes tiered water billing, blowdown rates, and seasonal variations for complete operating cost visibility.
Ready to Optimize Your Cooling System?
Start with our free tool and compare chillers and cooling towers from leading manufacturers with full lifecycle cost analysis.