Design & Engineering of Refrigeration Systems
From Concept to Efficient Refrigeration System—Your Experts for Custom Solutions
At cold.world Engineering, we guide you from the initial concept through to the successful commissioning of your refrigeration system. As a specialized engineering firm, we develop system designs using natural refrigerants (GWP from 0 to 3, ODP = 0) that are precisely tailored to your industrial requirements.
An Overview of Our Engineering Services
1. Needs Assessment & Concept Development
Let’s start by asking the right questions:
- What cooling capacity do you actually need in real-world operation?
- What specific temperature ranges need to be covered?
- How are your business processes structured?
- What expansions are planned for the site in the medium term?
- What are the possibilities for cost-effective heat recovery?
Our result: A well-founded set of specifications that serves as the basis for further planning and minimizes the need for later changes.
2. Refrigerant Selection & System Design
We analyze which natural refrigerant is best suited for your project:
Ammonia / NH₃ (R717)
- The benchmark for large-scale industrial refrigeration and deep-freeze storage
- Maximum thermodynamic efficiency (low operating costs)
- Proven in the logistics, food, and process industries
- Thorough safety planning in accordance with DIN EN 378, the German Occupational Safety Regulation (BetrSichV), and DGUV regulations
Carbon Dioxide / CO₂ (R744)
- Ideal for logistics centers, distribution centers, and supermarkets
- Excellent performance figures in deep-freeze applications
- High temperature levels can be utilized for heat recovery
- Long-term planning certainty thanks to GWP = 1
Hydrocarbons such as propane (R290)
- Ideal for compact chillers in the small- to medium-capacity range
- High energy efficiency with a low refrigerant charge
- Flexible, modular installation concepts
Chilled Water Systems
- For industrial process cooling and HVAC systems
- Ideal interface for integrating heat pumps
- Separation of the refrigeration cycle and the application area for maximum operational safety
3. Detailed Planning & Design
Thermodynamic Calculation
- Design of Compressors, Condensers, and Evaporators
- Simulation of Various Operating Conditions
- Partial-Load Behavior & Control Strategies
- Consideration of Environmental Conditions
Planning and Laying Pipelines
- Piping Sizing in Accordance with DIN EN 378 and the DGRL
- Optimization of flow velocities in all pipe sections
- Preventing delayed boiling and oil backflow problems
- Design and planning of valves, safety valves, etc.
Electrical Design
- Power Requirements Assessment
- Switchgear Designs
- Integration into existing infrastructure
4. Energy Efficiency
We are committed to maximum efficiency:
- Highly Efficient Compressor Technology (Screw, Piston, and Turbo Compressors)
- Heat exchangers with large heat transfer surfaces
- Frequency converters for demand-based speed control
- Free cooling whenever possible (Free Cooling)
Integrating heat recovery:
- Using Waste Heat for Heating (up to 1 MW+)
- Hot Water Supply
- Process Heat for Manufacturing Operations
- for defrosting air coolers, as sub-freeze protection for freezer rooms, and for heating staff facilities (e.g., via floor heating)
Economic Benefits:
- Operating costs up to 20–40% lower compared to inefficient older systems
- ROI typically achieved after 3–7 years
5. Permitting Planning & Documentation
We handle the preparation of all relevant documentation and government forms:
- Preparation of documentation for building permit applications and approval procedures (including procedures under the Federal Immission Control Act (BImSchG))
- Equipment Registers and Inspection Logs in Accordance with BetrSichV and AwSV
- Preparation of explosion protection documentation (relevant, for example, for NH₃ or propane)
- Technical planning support for fire safety concepts and acoustic insulation reports
- Coordination of structural analysis (e.g., for machine rooms or roof structures)
Complete and audit-proof project documentation:
- R&I Flowcharts
- Detailed hydraulic diagrams and electrical schematics
- 3D CAD modeling (including collision detection and space optimization)
- Piping Isometrics for Precise Prefabrication
- Complete lists of fittings, bills of materials, and component data sheets
6. Solicitation & Award
We ensure competition and transparency:
- Specifications in accordance with VOB/VOL
- Detailed Technical Specifications
- Eligibility Review and Prequalification of Bidders
- Technical Comparison of Proposals & Economic Evaluation
- Support During Contract Award Negotiations
- Technical Support for Contract Drafting
Your benefit:
Optimal value for money thanks to competition among different manufacturers.
7. Construction Management & Supervision
We keep track of everything:
- Coordination of all trades
- On-site Quality Control
- Tracking Deadlines & Costs
- Construction Defect Claims
- Documentation of Construction Progress
- Preparation and Execution of Acceptance Reports
8. Commissioning & Optimization
The key to cost-effective operation:
- Systematic Commissioning Checklists
- Functional tests of all components
- Control Optimization & Fine-Tuning
- Performance Measurements & Proof of Efficiency
- Employee Training
- 24-hour hotline during the critical initial phase
Why cold.world Engineering?
✓ Specializes in natural refrigerants
Over 50 completed projects using NH₃, CO₂, and other natural refrigerants (GWP < 3). We understand the challenges and opportunities based on our practical experience.
✓ Vendor-neutral advice
We are not tied to any component manufacturers or plant engineers. Our design is based solely on the thermodynamic and economic optimum for your project.
✓ Holistic Approach
From design to operational optimization—everything from a single source. No loss of data at interfaces, clear lines of responsibility.
✓ Focus on Energy Efficiency
Our system designs eliminate regulatory risks associated with F-gases and measurably reduce primary energy consumption—ensuring consistently low operating costs throughout the entire life cycle.
✓ Expertise in grants and funding
We are familiar with the current federal funding guidelines (e.g., BAFA / Refrigeration and Air Conditioning Guidelines) and prepare the necessary technical documentation for grants of up to 55%.
Schedule an Initial Consultation
Schedule a free initial consultation now.