Optimization of Existing Facilities
Greater cooling capacity, lower energy consumption
The most efficient refrigeration system is often the one you already have—provided it is properly configured from both a thermodynamic and control engineering standpoint. Many industrial refrigeration systems operate far below their optimal performance: Incorrect parameters, outdated control strategies, or flow-related bottlenecks in the piping network unnecessarily drive up electrical power consumption. cold.world ENGINEERING conducts a data-driven analysis of your existing system, identifies hidden savings potential, and develops concepts that make your technology future-proof—without the need for an immediate complete rebuild.
Renovate Instead of Investing: When Is It Worth It to Make Improvements?
A complete replacement of industrial refrigeration systems is not always economically feasible. Engineering-based system optimization is the right approach when:
Energy costs are spiraling out of control: Outdated equipment components and inflexible, unregulated operating times are the most common causes of excessive electricity consumption.
Safety and regulatory updates are coming: Does your existing ammonia system still comply with current legal requirements (e.g., BetrSichV, AwSV, TRAS 110)?
We develop plans for necessary safety retrofits.
Production conditions have changed: Your processes, cooling loads, or products have changed, but the system is still operating based on design parameters from 15 years ago.
Frequent malfunctions occur: These are often due to fluid dynamics issues or design errors in the refrigeration system, for which we develop well-founded remediation plans.
Our Approach: Data-Driven Analysis Instead of Assumptions
As an independent engineering firm, we don’t just replace components on a hunch.
We measure, analyze, and evaluate:
1. Comprehensive Process and Plant Analysis
We don’t limit ourselves to isolated measurements from the refrigeration unit; instead, we analyze the interplay between refrigeration and your actual production process. For flooded industrial systems, we examine real-world load profiles, system behavior under production conditions, and the management of defrost cycles (when and why does defrosting occur?). Often, the greatest potential for savings lies directly on the production line: For example, do freshly baked foods (such as bread or pizza) go directly into the freezer while still hot? By integrating a thermal stabilization or pre-cooling zone before the freezer into the design, the required cooling load can be drastically reduced, significantly easing the strain on the system.
2. Control Optimization
The greatest—and often most cost-effective—potential lies in PLC control (“software before hardware”). For large-scale industrial plants, we optimize the complex interaction of components: Implementing variable condensing and evaporating pressure control, intelligent compressor load management (to avoid inefficient partial-load operation), as well as demand-driven pump run times and process-dependent hot-gas defrost cycles. These software-based adjustments alone can often reduce electrical energy consumption by 15 to 20% in industrial applications—without any mechanical modifications whatsoever.
3. Technical Retrofit & Renovation Planning
Where structural modifications make sense from both a thermodynamic and economic standpoint, we plan the targeted replacement of components (often even while the system is in operation):
Drive Optimization: Retrofitting screw or reciprocating compressors and refrigerant pumps with variable-frequency drives (VFDs) for highly efficient, stepless part-load operation.
Condenser Upgrade: Retrofitting existing condensers or cooling towers with continuously variable, energy-efficient EC fans.
Level Control & Valve Stations: Replacement of old, mechanical float controls on the separators with precise, electronic level controls (motorized control valves), as well as the modernization of error-prone hot-gas valve stations.
Heat Recovery (Waste Heat Utilization): Targeted extraction of high-temperature waste heat—for example, from hot gas cooling or compressor oil cooling—for direct injection into your heating or process water systems.
Future-Proofing & Regulatory Requirements for Older NH₃ Systems
Industrial ammonia plants are characterized by their exceptional mechanical durability. Today, the pressure on operators usually comes from elsewhere: Spare parts are no longer available for older control systems (e.g., discontinued PLC generations), and regulatory agencies are requiring retrofits due to stricter environmental and safety standards. We’ll plan your professional retrofit:
- Control and Instrumentation Upgrades: Replacing outdated control systems with modern automation technology to prevent plant downtime caused by a lack of electronic replacement parts.
- Safety Retrofit: Upgrading gas detection systems, emergency ventilation systems, and emergency shutdown procedures to meet current state-of-the-art standards (TRAS 110, DIN EN 378).
Frequently Asked Questions About Optimization
Will production have to be halted for the renovation?
In most cases, no. We schedule and plan modifications so that major work can take place while operations continue or during periods when production is already suspended (e.g., on weekends). For complex system interventions in the refrigeration circuit or the piping network, we seamlessly integrate the temporary use of mobile rental cooling units into the construction schedule.
Are there any grants available for optimization?
Yes! The Federal Funding Program for Energy and Resource Efficiency in Industry (EEW / BAFA) not only supports new construction but also specifically promotes the energy optimization of existing facilities and the retrofitting of measurement, control, and regulation technology (MSR) with attractive investment grants. We’ll prepare the necessary technical documentation and energy-saving plans for you to ensure you fully realize these opportunities.
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