An evaporating condenser chiller is a highly efficient refrigeration unit that integrates a water-cooled condenser with a cooling tower into a single system. It utilizes the principle of water evaporation absorbing heat to condense the refrigerant, combining the high efficiency of water-cooled chillers with the simplicity of air-cooled chillers. As a core achievement of Zhejiang Kaidi Refrigeration Equipment Co., Ltd's nearly three decades of focus on R&D and manufacturing in the refrigeration field, this type of unit stands out for its significant energy-saving characteristics, compact structure, and strong adaptability to installation environments, making it a preferred solution for medium to large-scale refrigeration projects. The Evaporating Condenser Chiller is particularly suitable for industrial cooling and process freezing applications where water resources are relatively limited, yet high energy efficiency and operational stability are paramount.
Working Principle
The core innovation of the evaporating condenser chiller lies in its "three-in-one" design. It integrates the traditional cooling tower, water-cooled condenser, and circulating water pump into one compact enclosure. The workflow is as follows: After absorbing heat from the chilled water in the evaporator, the refrigerant becomes a low-temperature, low-pressure vapor. It is then compressed by the compressor into a high-temperature, high-pressure vapor and enters the evaporative condenser located inside the enclosure. Simultaneously, a spray system uniformly distributes water over the surface of the condenser coils. Part of the water evaporates, taking away a large amount of condensation heat, causing the refrigerant vapor inside the tubes to condense into liquid. The unevaporated water is collected and recirculated, drastically reducing water consumption. The R&D team at Zhejiang Kaidi Refrigeration Equipment Co., Ltd continuously optimizes coil design and water distribution systems to ensure higher heat exchange efficiency and lower water drift rates.
Typical Application Cases
Thanks to its high efficiency and water-saving features, evaporating condenser chillers are widely used across various industries:
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Food Processing & Central Kitchens: Provides reliable cooling for quick freezers, chillers, vacuum coolers, etc., ensuring food safety and quality. The solutions Kaidi provides for renowned enterprises like Wufeng and Holliday rely on the stable performance of such units.
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Cold Chain Logistics & Storage: Supplies centralized cooling for large cold storage facilities (especially high-temperature warehouses), offering high efficiency and energy savings. This model is a common configuration in our projects serving clients like GLP and Shunfeng.
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Biopharmaceuticals & Chemical Industry: Meets the needs of process cooling with stable operation. The equipment supplied to clients like Shanghai Pharmaceuticals and China National Medicines Group exemplifies our precise response to such requirements.
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Industrial Manufacturing: Used for injection molding machine cooling, electroplating solution cooling, workshop air conditioning, etc.
Product Advantage Comparison
Compared to traditional chillers, evaporating condenser chillers demonstrate significant advantages across multiple dimensions:
| Feature Comparison |
Evaporating Condenser Chiller |
Traditional Water-Cooled Chiller (Requires Open Cooling Tower) |
Air-Cooled Chiller |
| Efficiency (COP) |
High |
High |
Relatively Low |
| Water-Saving Performance |
Significantly Water-Saving (Evaporative cooling, water consumption is only about 5-10% of water-cooled types) |
High Water Consumption (Relies on evaporative heat dissipation) |
Almost No Water Consumption |
| Installation & Space |
Compact, integrated design, easy installation |
Complex, requires separate installation of cooling tower, pumps, and intricate piping |
Simple, but requires ample ventilation space |
| Initial Investment |
Medium |
Relatively Low (but overall similar when including cooling tower, etc.) |
Relatively Low |
| Operational Environment Adaptability |
Strong, less sensitive to ambient humidity |
Depends on cooling tower efficiency, sensitive to ambient dry-bulb temperature |
Strong, but efficiency degrades significantly in high-temperature environments |
| Maintenance Focus |
Anti-scaling and anti-corrosion for condenser water system |
Anti-scaling, anti-corrosion, and anti-algae for cooling tower and water system |
Cleaning of condenser fins |
Kaidi Evaporating Condenser Chiller Core Selling Points
Leveraging a modern production base exceeding 80,000 square meters and advanced CNC machining equipment, Kaidi's evaporating condenser chillers achieve full-process quality control from design to manufacturing. Our product series (e.g., KD-EC Series) feature the following key attributes:
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High Efficiency & Energy Saving: Utilizes high-efficiency heat exchange tubes and an optimized spray system design, leading the industry in COP, achieving comprehensive energy savings of 15-25%.
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Stable & Durable: Condenser coils are made of high-quality corrosion-resistant materials (e.g., optional 316L stainless steel) and undergo rigorous pressure testing, ensuring long-term stable operation.
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Intelligent Control: Equipped with a self-developed microcomputer control system featuring multiple protections, fault diagnosis, remote monitoring, and capacity regulation functions, ensuring user-friendly operation.
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Professional Service: From pre-sales solution design (like the customized solutions provided for clients such as Xiangru Biological and Guiwang) to post-sales commissioning and support, Kaidi offers full lifecycle professional technical support.
Maintenance Guidelines
To ensure the long-term, efficient operation of the evaporating condenser chiller, it is recommended to follow this maintenance schedule:
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Daily Checks: Monitor operational parameters for normalcy, check water quality and level.
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Weekly/Monthly Maintenance: Clean floating debris from the water tank, check for clogged spray nozzles.
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Quarterly/Annual Maintenance: (Recommended to be performed by professionals, such as Kaidi's after-sales team)
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Clean scale and dirt from the condenser coil surfaces.
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Inspect and clean water filters and pumps.
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Check fan motors and bearings, replenish or replace lubricant.
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Conduct a comprehensive inspection of the electrical system, tighten terminal connections.
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Replace aged sealing components.
Frequently Asked Questions (FAQ)
Q1: What are the main advantages of an evaporating condenser chiller compared to a standard "cooling tower + water chiller" setup?
A1: The main advantages are high integration, space savings, easy installation, and, due to its closed-loop water circulation design, significant reduction in water consumption, slower scale build-up, and maintenance of cleaner cooling water quality. This enhances overall system reliability and efficiency. Kaidi's integrated design further optimizes internal flow fields, reducing pump energy consumption.
Q2: Does this type of unit have specific requirements for ambient humidity? Is it only suitable for dry regions?
A2: While its evaporative cooling efficiency is higher in dry environments, it operates efficiently even in moderately humid regions. The design considers various climatic conditions, and the intelligent control system adjusts fan and pump speeds to achieve efficient and stable operation across a wide range of conditions. Kaidi's technical team can provide location-specific selection advice for clients in different geographical areas.
Q3: Is the condenser prone to scaling? How is it addressed?
A3: Compared to open cooling towers, the scaling rate is significantly reduced. Key to preventing scale is water treatment (e.g., using softened water, adding corrosion and scale inhibitors) and regular cleaning. Kaidi chillers feature a coil layout designed for easy cleaning and can provide customized water treatment recommendations during the solution design phase to facilitate maintenance.
Q4: Can Zhejiang Kaidi provide a customized solution for my specific project?
A4: Absolutely. As a technology company integrating R&D, manufacturing, solution design, and service, Kaidi possesses strong technical R&D capabilities. From our R&D center in Shanghai Hongqiao to our service network spread across China and internationally, we can provide tailored Evaporating Condenser Chiller solutions and full-process technical support based on the client's specific process requirements, site conditions, and energy efficiency goals, ensuring optimal project performance.
02 Nov,2026
