Zhejiang Kaidi Refrigeration Equipment Co., Ltd

  • 30+

    Years Industry Experience

  • 300+

    Employees

  • 1000Million

    Export Amount

  • 100000+

    Plant Area

Zhejiang Kaidi Refrigeration Equipment Co., Ltd. was founded in 1995, with “Kaidi” as our registered trademark. As one of the professional Condensing Unit Manufacturers and China Condensing Unit Factory, we have been focusing on refrigeration for nearly 30 years. Today, Kaidi has developed into a scientific and technological enterprise integrating scientific research and development, processing and manufacturing, pre-sales program design, product sales and commissioning, and comprehensive after-sales service support. Headquartered in Shengzhou City, Zhejiang Province, our factory covers an area of 100,000 square metres, with more than 60,000 square metres of modern factory buildings and more than 8,000 square metres of offices, as well as Shanghai Hongqiao Office (R&D Centre), Guangzhou Panyu Office, Beijing Branch and so on.

After years of development, we have the management team of a top 500 enterprise and a standardised and efficient operation system, as well as strong technical research and development strength. The factory is equipped with complete and advanced CNC machining equipment and high-standard testing laboratory, with strong product development and lean processing and manufacturing capabilities; the establishment of a professional pre-sales technical support, after-sales service guarantee system, we not only research and development and production of advanced refrigeration equipment, but also the overall solution provider for high-quality customers to provide first-class products and services to ensure that our purpose and goal.

Our sales and service network not only spreads all over the country, but also develops rapidly in the world in the past few years, ‘Kaideli’ brand refrigeration products have a high reputation both at home and abroad, and have won the praise and recognition of our customers. At present, our customers include: cold chain logistics enterprises such as GLP, Shunfeng, Jingdong, Yaleng, Kai Orange, etc.; food processing enterprises such as Wufeng, Holliday, Ligao, Qingmei, Zuming, Anjing, Sienian, etc., central kitchens such as Makgindi, Lvcheng, Ajisai, etc.; slaughter enterprises such as Winsome, Xinning, etc.; edible fungi factory planting enterprises such as Xiangru Biological, Guiwang, Huaguang, Zongxing Mushroom, Lisa, etc., as well as Shanghai Pharmaceuticals, China Medicine Group, and so on. Group and so on.

HONOR & CERTIFICATE

Since the establishment of the company has passed the IS09001 quality management system certification, ISO4001 environmental management system certification, ISO45001 occupational health and safety system certification; obtained the industrial products production licence and the People's Republic of China special equipment manufacturing licence and so on.

  • Certificate of conformity for evaluation of test devices
  • Special Equipment Manufacturing License
  • Edible Mushroom Enterprise Manufacturing Star
  • Excellent Unit Member of China Institute of Refrigeration
  • 2023 Guangxi Refrigeration Society Refrigeration and Cold Storage Specialized Committee
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Science and Technology Achievement Appraisal Certificate
  • Computer Software Copyright Registration Certificate
  • Computer Software Copyright Registration Certificate
  • Computer Software Copyright Registration Certificate
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Industry knowledge
A condensing unit is the heat transfer core of a refrigeration system, realizing heat transfer through the phase-change cycle of refrigerant. Its core working process is as follows: the compressor draws low-temperature and low-pressure refrigerant vapor from the evaporator, compresses it into a high-temperature and high-pressure state, and then delivers it to the condenser. The refrigerant releases heat and liquefies through heat exchange with air or water (cooling medium). After that, it is depressurized and cooled by the throttling device before returning to the evaporator to absorb heat from the cooled object and complete the cycle. In this process, the condensing unit must work collaboratively with components such as evaporators and throttle valves to form a complete refrigeration system.

Key Core Components

  1. Compressor: The power core that determines the cooling capacity and energy efficiency of the unit. Kaidi units are equipped with various types of compressors including piston, scroll, and screw compressors to meet the needs of different scenarios.
  2. Condenser: The heat release component, divided into three types: air-cooled, water-cooled, and evaporative. All Kaidi unit series adopt high-efficiency heat exchange design, with the heat transfer coefficient increased by more than 12% compared with industry standards.
  3. Throttling Device: Regulates refrigerant flow and pressure. Kaidi adopts electronic expansion valves for precise control, with temperature control accuracy up to ±0.5℃.
  4. Auxiliary Components: Including oil separators, dry filters, liquid receivers, etc. Kaidi units are equipped with customized auxiliary components, extending the service life of the system by more than 30%.

Key Industry Terms

Term Definition Kaidi Application Advantages
Condensing Temperature The corresponding temperature when the refrigerant liquefies The unit can achieve wide-range adjustment from 5-50℃, adapting to different environments
Heat Transfer Coefficient Core indicator for measuring heat exchange efficiency Air-cooled models reach 35-60W/(㎡·K), water-cooled models exceed 1000W/(㎡·K)
Cooling Capacity The amount of heat transferred per unit time Covers a range of 0.5-1200kW, meeting the needs from micro to large-scale scenarios
COP Value Ratio of cooling capacity to power consumption The average COP of the unit is ≥3.8, reaching the first-level energy efficiency standard
Evaporation Temperature The corresponding temperature when the refrigerant evaporates and absorbs heat Can reach as low as -55℃, suitable for ultra-low temperature refrigeration scenarios

Core Technical Advantages

  1. High-efficiency Heat Exchange Technology: Adopting optimized fin structure and flow channel design, the heat exchange efficiency of Kaidi condensing units is increased by 15%-20% compared with traditional products, and the operating energy consumption is reduced by more than 12%.
  2. Intelligent Control Technology: Equipped with PLC control system, supporting remote monitoring and automatic adjustment, which can dynamically adjust the operating status according to load changes to achieve precise temperature control and energy-saving operation.
  3. Stable Operation Technology: Equipped with multiple protection devices (overload, overvoltage, phase loss protection, etc.), combined with low-noise design and anti-harsh environment structure, the continuous operation failure rate of the unit is less than 0.3%.
  4. Environmentally Friendly Adaptation Technology: Compatible with environmentally friendly refrigerants such as R290 and R410A, complying with EU CE and domestic GB standards, helping customers achieve green production.

Full-series Product Features and Application Scenarios

Product Type Core Features Applicable Scenarios Kaidi Exclusive Advantages
Open Type Condensing Unit Compact structure, easy maintenance Industrial water chillers, medium-sized cold storage Customizable layout, adapting to complex installation environments
Box Type Condensing Unit Fully enclosed design, low-noise operation Supermarket cold chain, food processing workshops IP54 protection level, dustproof and waterproof, noise ≤65dB
Mini Condensing Unit Small size, ultra-low energy consumption Small refrigerators, laboratory equipment Cooling capacity 0.5-5kW, standby power consumption only 15W
U Type Condensing Unit Large heat exchange area, low wind resistance Medium-sized cold storage, cold chain logistics turnover warehouses Windward wind speed up to 3.2m/s, heat exchange efficiency increased by 18%
V Type Condensing Unit High space utilization rate, uniform heat dissipation Commercial air conditioners, data centers Adopting dual-fan design, temperature distribution deviation ≤2℃
Piston/Scroll Parallel Condensing Unit Modular design, flexible expansion Large cold storage, cold chain logistics parks Supporting parallel operation of multiple units, cooling capacity can be expanded on demand
Screw Condensing Unit High power, high efficiency Industrial refrigeration, large-scale cold chain bases Cooling capacity 50-1200kW, COP value up to 4.5
Barrel Pump Condensing Unit Long-distance liquid supply, high heat exchange efficiency Distributed cold storage, large food processing plants Liquid supply distance up to 500 meters, evaporator heat exchange efficiency increased by 25%
Other Condensing Units Personalized design, adapting to special needs Low-temperature laboratories, special refrigeration scenarios Supporting ultra-low temperature customization of -55℃, meeting special industry standards

Condensing Unit Selection Guide

Core Selection Factors

  1. Cooling Capacity Requirements: Calculate based on the volume, temperature requirements and heat load of the cooled object. Kaidi provides professional pre-design calculation services to accurately match unit models.
  2. Operating Environment: Prioritize evaporative or water-cooled units in high-temperature environments; recommend air-cooled products in water-scarce areas. All Kaidi series have environmental adaptability.
  3. Operating Conditions: Recommend screw or parallel units for low-temperature scenarios (≤-20℃); scroll or piston units are optional for normal-temperature scenarios (0-10℃).
  4. Energy Efficiency Requirements: Choose first-level energy efficiency units for energy conservation. Kaidi screw units and parallel units all meet the national first-level energy efficiency standards.
  5. Installation Conditions: Choose Mini or V-type units for space-constrained areas; prioritize barrel pump units for long-distance liquid supply. Kaidi provides on-site survey and installation scheme design.

Installation and Maintenance Key Points

Installation Specifications

  1. Reserve a heat dissipation space of ≥30cm for unit installation; avoid direct sunlight and closed environments for air-cooled units.
  2. Adopt flange or welding connection for pipeline connection; pressure test must reach 1.6MPa and maintain pressure for 24 hours without leakage.
  3. Electrical connection must comply with local voltage standards, with grounding resistance ≤4Ω. Kaidi provides professional installation guidance and commissioning services.

Daily Maintenance Process

  1. Daily: Check operating pressure, temperature and noise, and record unit operating parameters.
  2. Weekly: Clean dust on condenser fins, check refrigerant level and oil level.
  3. Monthly: Tighten electrical wiring, test the effectiveness of protection devices.
  4. Annual: Conduct comprehensive disassembly and cleaning, replace filters and lubricating oil. Kaidi provides annual maintenance service packages.

Common Fault Troubleshooting

Fault Phenomenon Possible Causes Troubleshooting Methods
Insufficient cooling capacity Condenser blockage, refrigerant leakage Clean the condenser, detect leakage points and replenish refrigerant
High operating noise Fan imbalance, compressor failure Calibrate the fan, check compressor bearings and shock absorption devices
Frequent unit start-stop Thermostat failure, large load fluctuation Calibrate or replace the thermostat, optimize system load regulation
High-pressure alarm Excessively high condensing temperature, insufficient cooling water/air volume Clean the heat exchange surface, check the operation status of water pumps or fans

Frequently Asked Questions (FAQ)

  1. How to choose the cooling method of the condensing unit?
    For sufficient water sources and pursuit of high heat exchange efficiency, water-cooled type is preferred; for water-scarce areas or limited installation space, air-cooled type is optional; for dry areas and need to balance energy conservation, evaporative type is recommended. Kaidi can provide customized solutions according to on-site conditions.
  2. What are the advantages of parallel condensing units?
    Parallel units have the advantages of modular expansion, energy saving under partial load, and redundancy guarantee. A single unit failure will not affect the overall operation. Kaidi parallel units support the combination of 2-16 modules, with energy efficiency increased by more than 20% under partial load.
  3. How to achieve energy-saving operation of condensing units?
    Choose first-level energy efficiency products, equip with intelligent control systems, and regularly maintain heat exchange components. Kaidi units are equipped with permanent magnet synchronous motors and frequency conversion technology, with energy efficiency increased by 35% when the load rate is 30%, saving 15%-25% of annual electricity costs.