Web Menu

Product Search

Language

Share

Piston/Scroll Parallel Condensing Units Custom

Home / Products / Condensing Unit / Piston/Scroll Parallel Condensing Unit

Product Series

How Can We Help You?

If you need any help, please feel free to contact us

CONTACT US

Piston/Scroll Parallel Condensing Units Supplier

    information to be updated

With the rapid development of the refrigeration equipment market, there are more and more small and medium size fresh-keeping cold storage, low-temperature refrigeration, ice making equipment. Our company's semi-hermetic piston parallel condensing unit can meet the needs of -5 ℃ -8 ℃~, -15 ℃~-20 ℃ respectively, and can be widely used in small fresh-keeping warehouses, cold storage warehouses, ice making, frozen water and other refrigeration equipment.

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 Piston Parallel Condensing Units Supplier and China Scroll Parallel Condensing Units Company, 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
Recently News and Events
Share with you
View More News

  • 09 Feb,2026

    The Critical Role of KCWS Series Condensers in Modern Cooling Systems
    In the realm of industrial refrigeration and HVAC systems, the efficiency of heat rejection determines the overall performance and energy consumption of the entire plant. The KCWS series shell and tube water-cooled condenser stands out as a primary component designed to handle intensive thermal loads. These units are ...

  • 07 Feb,2026

    How Modern Chiller Units Support the Evolution of Industrial Refrigeration
    The global demand for high-capacity refrigeration has entered a new phase of rapid development. From the massive requirements of fresh-keeping cold storage facilities to the specialized needs of industrial ice-making, the pressure on chiller manufacturers to deliver both power and precision has never been greater. Mod...

  • 26 Jan,2026

    Addressing Common Questions: What to Look for in Modern Box Type Condensing Units
    Introduction: The Shift Toward Integrated Refrigeration Solutions In the refrigeration and HVAC industry, professionals and businesses often ask: "How can we achieve reliable cooling in a compact, efficient package?" This question drives innovation, leading to the development of integrated condensing units that combine...

SEND MESSAGE

Leave Your Message*

Industry knowledge
The Piston/Scroll Parallel Condensing Unit is the core equipment of refrigeration systems. It combines multiple piston or scroll compressors in parallel to achieve the compression and condensation cycle of refrigerants, providing a stable cold source for various refrigeration scenarios. Zhejiang Kaidi Refrigeration Equipment Co., Ltd (hereinafter referred to as Kaidi) has been deeply engaged in the refrigeration field for nearly 30 years. Its independently R&D and manufactured Piston/Scroll Parallel Condensing Units integrate advanced manufacturing technologies and engineering practice experience, and are widely applied in key fields such as cold chain logistics, food processing, and pharmaceutical storage. With modular design and precise control technology, this series of units can dynamically adjust operating power according to load changes, balancing refrigeration efficiency and energy-saving requirements, thus serving as the preferred equipment for industrial and commercial refrigeration scenarios.

Working Principles of Two Unit Types

Piston Parallel Condensing Unit

It relies on a crankshaft connecting rod mechanism to drive the piston to reciprocate in the cylinder, completing the suction, compression, and exhaust processes of refrigerants. After multiple piston compressors are connected in parallel, the PLC system uniformly controls the number of startup units and operating status. Only part of the compressors work when the load is low, and all units are put into operation during peak load periods. In the unit design, Kaidi integrates high-efficiency oil-gas separation technology with a precise oil pressure control module, ensuring stable compressor lubrication and extending equipment service life.

Scroll Parallel Condensing Unit

It forms a compression chamber through the meshing rotation of an eccentric rotor and a stator, gradually compressing refrigerant gas into a high-temperature and high-pressure state. The unit adopts an air injection enthalpy-increasing structure, enabling the minimum evaporation temperature to reach -42℃ under low-temperature working conditions. Equipped with air supplement one-way valve control technology, it effectively reduces airflow pulsation. By optimizing the scroll tooth profile design and parallel pipeline layout, Kaidi has improved the heat exchange efficiency of the unit to the advanced level of the industry, meeting the requirements of low-energy consumption operation.

Core Product Parameters and Comparison

Comparison Dimension Piston Parallel Condensing Unit Scroll Parallel Condensing Unit Kaidi Core Advantages
Applicable Working Conditions Medium-high temperature refrigeration (evaporation temperature: -10℃~10℃) Wide-temperature range refrigeration (evaporation temperature: -42℃~15℃) Dual-type units cover full-scenario needs, adapting to refrigeration standards of different industries
Energy Efficiency Level COP value: 3.2~4.5 COP value: 3.8~5.2 Equipped with independently developed high-efficiency heat exchangers, saving 15%~20% more energy than the industry average
Control Precision Load regulation precision: ±5% Load regulation precision: ±3% Adopts PLC intelligent control system, supporting remote monitoring and fault early warning
Installation Space Large floor area Compact structure, saving 30% floor area Modular integrated design, shortening on-site installation period by 40%
Maintenance Cost Medium, with convenient replacement of wearing parts Low, with long service life of core components More than 30 national service outlets, providing 4-hour response maintenance service

Typical Application Cases

Kaidi’s Piston/Scroll Parallel Condensing Units have served numerous well-known enterprises with stable performance:
  • Cold Chain Logistics: Providing refrigeration support for large-scale cold storage facilities of GLP, JD Logistics, etc. Piston parallel units meet the fresh-keeping needs of 1,000 tons of goods per day, with an operation stability rate of 99.8%.
  • Food Processing: Equipping scroll parallel units for production workshops of enterprises such as Wufeng and Ligao, precisely controlling the processing environment temperature at 0℃~5℃ to ensure product quality consistency.
  • Pharmaceutical Storage: Customizing low-temperature refrigeration solutions for drug warehouses of Shanghai Pharmaceuticals and China National Pharmaceutical Group. Scroll units achieve precise multi-temperature zone control ranging from -20℃ to 8℃, complying with GSP standards for pharmaceutical storage.
  • Edible Fungi Cultivation: Supplying constant temperature and humidity refrigeration support for cultivation greenhouses of enterprises like Xiangru Biological and Guiwang. Piston units are suitable for the decentralized refrigeration needs of greenhouses, reducing energy consumption by 25%.

Maintenance and Servicing Guidelines

Daily Maintenance (Per Day)

  1. Inspect the surface cleanliness of the unit, record the temperature and pressure parameters of cooling water and chilled water, ensuring they are within the standard range.
  2. Verify the three-phase power voltage balance, with deviation not exceeding 2%. Ensure the oil heater works normally and the oil temperature is maintained at 25℃~30℃ during standby.
  3. Observe that there is no leakage at pipeline joints, and the compressor runs smoothly without abnormal vibration.

Regular Maintenance

  • Monthly Maintenance: Clean the air filter screen and condenser fins, check the sensitivity of temperature control probes, and tighten electrical wiring terminals.
  • Quarterly Maintenance: Test the insulation resistance of the compressor, replenish refrigeration oil to the standard level, and check the setting value of safety protection devices.
  • Annual Maintenance: Clean scale deposits in evaporator and condenser pipelines, replace oil filter and dry filter elements, and conduct a comprehensive leak detection of the unit.

Professional Support

Relying on the technical resources of its Shanghai Hongqiao R&D Center, Kaidi provides customized maintenance solutions for customers. Users can obtain remote guidance through the national service hotline or book professional engineers for on-site maintenance, ensuring the long-term and efficient operation of the unit.

Frequently Asked Questions (FAQ)

  1. How to select between piston and scroll parallel condensing units?
    Answer: Select according to refrigeration temperature requirements and operating conditions. For medium-high temperature refrigeration (-10℃~10℃) with large load fluctuations, piston units are preferred. For low-temperature refrigeration (-42℃~15℃) pursuing stable operation, scroll units are the better choice. Kaidi’s pre-sales technical team can provide free matching schemes based on specific project needs.
  2. What to do if the condensation pressure is too low during unit operation?
    Answer: First, check if the cooling water temperature is too low. Adjust the cooling water valve to control the inlet water temperature at 25℃~35℃. If the ambient temperature is too low, activate the condensation pressure regulating valve. Kaidi units are equipped with a complete pressure monitoring system that automatically alarms when abnormalities occur, and users can contact the after-sales team for technical support.
  3. How to avoid compressor "oil rushing" faults?
    Answer: Control the oil filling volume within the standard range, avoid excessively low oil temperature, and prevent such faults by increasing oil temperature and adjusting liquid supply volume. Kaidi units are equipped with horizontal high-efficiency oil separators with an oil separation rate of 99%, combined with oil level monitors for real-time oil supplementation, fundamentally reducing the risk of "oil rushing".
  4. What are the tips for energy-saving operation of the unit?
    Answer: Reasonably adjust the number of operating compressors according to load changes to avoid long-term full-load operation; maintain clean circulating water quality to reduce the impact of condenser fouling on heat exchange efficiency; properly close the chilled water inlet valve in high-temperature summer to avoid compressor overload. The PLC system of Kaidi units can automatically optimize the operation mode, saving 20%~30% more electricity than traditional units.

Be the First to Know

For exclusive deals and latest offers, sign up by entering your email address below.

We focus on refrigeration for nearly 30 years.

Quick Links

Products

Contact Us

  • Zhejiang Kaidi Refrigeration Equipment Co., Ltd Block A, Ganlin Industry Park, Shengzhou, Zhejiang, China.
  • Zhejiang Kaidi Refrigeration Equipment Co., Ltdkd@zjkaideli.com
  • Zhejiang Kaidi Refrigeration Equipment Co., Ltd+86-0575-83272600
    +86-400-188-3366

Copyright © 2025Zhejiang Kaidi Refrigeration Equipment Co., Ltd

  Piston Parallel Condensing Units Supplier  China Scroll Parallel Condensing Units Company