Vegetable Cold Storage Series

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The large-scale cold storage project for a food processing plant, designed and constructed by our company, has been officially put into operation. The total scale of the project covers two core sections: a 15,000 square meter cold storage and a 3,000 square meter workshop air conditioning system. The cold storage is engineered with a precisely controlled temperature range of -5℃ to 5℃, tailor-made for the fresh-keeping and storage of various vegetables; the workshop air conditioning system stably maintains an optimal operating temperature of 8℃ to 15℃, meeting the environmental requirements of food processing.

The refrigeration system is equipped with a dual-compressor configuration of open-type and semi-hermetic screw compressors, and the entire system adopts the eco-friendly refrigerant R507, combined with high-efficiency barrel pump liquid supply technology, which ensures both superior refrigeration efficiency and reliable operational stability. The thermal insulation system of the cold storage uses 150mm-thick polyurethane sandwich panels, delivering outstanding heat insulation performance and guaranteeing a uniform and constant temperature inside the storage.

Notably, the project is equipped with our self-developed intelligent cold storage monitoring platform, which can real-time track the operational status of the refrigeration system, collect and analyze all key operating data synchronously, and provide a scientific basis for equipment operation and maintenance as well as energy efficiency optimization. Since its delivery and commissioning, the entire system has operated stably and reliably, winning high recognition from the client


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Thank you for your interest in our refrigeration solutions. The -35℃ rapid freezing cold storage unit we are introducing today is a core product developed by combining years of refrigeration engineering experience with internationally advanced technology. It is specifically designed for efficient and stable low-temperature freezing needs and is widely applicable to material freezing and storage scenarios in the food, pharmaceutical, and other industries. Below is a detailed introduction to its core advantages and technical characteristics:

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Ultimate Freezing Efficiency, Ensuring Production Capacity

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One of the core advantages of this cold storage unit is its superior rapid freezing capability. Based on precise control of a stable -35℃ low-temperature environment, it can complete the freezing of 10 tons of goods within 8 hours, significantly shortening the material freezing cycle and effectively improving your production flow efficiency. The main dimensions of the cold storage unit are 6 meters long × 4 meters wide × 3.5 meters high. The reasonable spatial layout ensures the even placement of goods and optimizes the cold air circulation path within the storage unit, ensuring that every batch of goods enjoys a consistent freezing effect and avoiding the problem of incomplete freezing in certain areas.


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Core Refrigeration System: Stable, Efficient, and Environmentally Friendly

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As the "heart" of the cold storage facility, the refrigeration system utilizes a multi-parallel screw compressor unit. This design dynamically adjusts its operation based on the load within the storage area. It provides powerful refrigeration during full-load freezing, meeting the rapid freezing needs of 10 tons of goods, while reducing energy consumption during low-load insulation, achieving precise energy savings. The unit boasts high operational stability, a low failure rate, and convenient maintenance, effectively reducing subsequent operating costs.


The refrigerant used is the internationally recognized environmentally friendly R507. This refrigerant possesses excellent low-temperature refrigeration performance, stable thermodynamic properties, and high refrigeration efficiency. It also complies with international environmental standards, posing no risk of ozone layer depletion, and helps your production operations meet global environmental compliance requirements.


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Scientific Heat Exchange Design: High Efficiency and Convenient Maintenance

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We have comprehensively optimized the heat exchange system design:
• The air cooler adopts a floor-standing structure, adaptable to the cold storage space layout, with ample heat exchange area. It can quickly achieve cold air circulation and cooling within the storage area. Combined with a -35℃ low-temperature setting, it further improves freezing efficiency. Simultaneously, it employs a water-based defrosting method, ensuring thorough and rapid frost removal, effectively preventing frost accumulation from affecting heat exchange performance and ensuring continuous and stable operation of the cold storage.


• The condenser uses an evaporative condenser, which improves heat exchange efficiency by more than 30% compared to traditional condensers, and has significant energy and water saving advantages. Evaporative condensation technology can fully utilize the latent heat of vaporization of air and water for heat exchange, significantly reducing condensation temperature, thereby improving the overall operating efficiency of the refrigeration system while reducing water consumption, aligning with the global trend of green production.


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Humanized Operation and Maintenance Design, Reducing Operating Costs

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We fully consider the operation and maintenance needs of overseas customers, emphasizing convenience in the selection of key components and system design: Floor-standing air coolers and evaporative condensers adopt modular designs for easy installation and disassembly; the water-based defrosting method is simple to operate, requiring no complex manual intervention; the multi-parallel screw compressor units are mature and reliable, with few vulnerable parts, minimizing subsequent maintenance workload. Furthermore, we provide comprehensive technical support and spare parts supply to ensure the long-term stable operation of your cold storage.


This -35℃ rapid freezing cold storage unit, with its high-efficiency freezing capacity, stable and reliable refrigeration system, environmentally friendly and energy-saving design concept, and convenient operation and maintenance features, has been verified through numerous practical projects and can perfectly match your large-scale production needs. We have a professional technical team that can optimize details according to your specific operating conditions and provide full installation, commissioning, and technical service support.
We look forward to working with you to provide stable and efficient refrigeration support for your business development. Please feel free to contact us with any questions.


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Pharma cold rooms are critical facilities that store sensitive medication at precise temperatures to ensure their efficacy and safety. Effective monitoring systems are essential to maintain these temperatures and ensure the integrity of the stored pharmaceuticals. This article will help you understand the differences and benefits of active and passive monitoring systems for pharma cold rooms, enabling you to choose the best system for your needs.

Overview of Monitoring SystemsMonitoring systems for pharma cold rooms are designed to maintain and record temperature data. There are two primary types: active and passive monitoring systems. Understanding the differences between these systems is crucial for ensuring the reliability and safety of the stored pharmaceuticals.

Active Monitoring Systems: Features and BenefitsActive monitoring systems, also known as real-time temperature monitoring systems, continuously track and record temperature data. They consist of wired or wireless sensors that transmit temperature readings to a central server or dashboard that can be accessed remotely.

Key FeaturesReal-Time Data: Active systems provide instant temperature readings, allowing for immediate action if temperatures deviate from the set points.Remote Access: Users can monitor temperature data from anywhere via a smartphone, tablet, or computer.Alerts and Notifications: Active systems send alerts via email, SMS, or live notifications if temperatures exceed or fall below set thresholds.Data Logging: These systems record comprehensive temperature logs that can be reviewed for quality control and regulatory compliance.Performance Analytics: Advanced systems offer performance analytics, enabling users to monitor system performance and identify potential issues.BenefitsImmediate Response: Real-time temperature monitoring ensures prompt action if temperatures fluctuate, reducing the risk of product loss.Centralized Management: Remote access allows facility managers to monitor multiple pharma cold rooms from a single location, improving efficiency.Improved Data Integrity: Continuous data logging provides a detailed record of temperature fluctuations, supporting regulatory compliance and quality assurance.Enhanced Security: Active systems can include security features such as tamper-proof sensors and data encryption, ensuring the integrity of temperature records.Cost-Effective: Reduces the need for frequent manual temperature checks and associated labor costs.Passive Monitoring Systems: Features and BenefitsPassive monitoring systems, also known as logging systems, record temperature data over a set period. They consist of data loggers that are placed inside the pharma cold room and periodically recorded to track temperature changes.

Key FeaturesData Loggers: Passive systems use data loggers that store temperature readings on an internal memory card or SD card.Periodic Recording: Temperature readings are recorded at regular intervals, such as every minute or every hour.Battery-Powered: Most passive systems are battery-powered, requiring periodic replacement or charging.Portable and Compact: Passive systems are compact and easily portable, making them suitable for various environments.BenefitsLow Initial Cost: Passive systems are typically less expensive to install and operate compared to active systems.Portable and Inexpensive: Portable data loggers are easy to deploy and can be used in various settings.Easy Installation: Passive systems require minimal setup and installation, making them user-friendly for a wide range of users.Back-Up System: Passive systems can serve as a back-up to active systems in case of power failures or system malfunctions.Key Considerations for Choosing a Monitoring SystemSeveral factors should be considered when choosing between active and passive monitoring systems for your pharma cold room:

ReliabilityActive Systems: Active systems are more reliable due to real-time temperature monitoring and immediate alerts. They provide continuous data and can detect issues before they become critical.Passive Systems: Passive systems rely on periodic recordings, which may result in gaps in data if the system fails to record during a temperature fluctuation.CostActive Systems: Active systems have higher initial costs due to the need for sensors, data loggers, and connectivity equipment. However, they offer long-term cost savings through reduced labor requirements and enhanced data integrity.Passive Systems: Passive systems are generally less expensive initially but can be more costly over time due to frequent data logger replacements and periodic recordings.Maintenance and UpkeepActive Systems: Active systems require regular maintenance to ensure proper functioning. This includes periodic calibration, sensor replacements, and software updates.Passive Systems: Passive systems also require maintenance, primarily involving periodic checking of battery levels and data logger status.Data Integrity and Regulatory ComplianceActive Systems: Active systems provide continuous data logging and real-time alerts, ensuring robust data integrity and compliance with regulatory requirements.Passive Systems: Passive systems rely on periodic recordings, which may not capture temperature fluctuations in real-time and may not be as comprehensive as active systems.Cost Comparison of Active vs Passive Monitoring SystemsTo help you make an informed decision, we have provided a cost comparison between active and passive monitoring systems for pharma cold rooms.

Active Monitoring SystemsPassive Monitoring SystemsInitial CostHigher due to sensors, data loggers, and connectivity equipmentLower due to portable data loggers and simplified setupOperating CostLower due to reduced labor requirements and continuous data loggingHigher due to frequent data logger replacements and periodic recordingsData IntegrityHigh due to continuous real-time monitoring and comprehensive temperature logsModerate due to periodic recordings and potential data gapsReliabilityHigh due to real-time monitoring and immediate alertsModerate due to periodic recordings and potential recording gapsMaintenanceHigher due to periodic calibration, sensor replacements, and software updatesLower due to simple maintenance tasks such as battery checks and data logger statusBest Practices for Pharma Cold Room MonitoringTo ensure the effectiveness of your monitoring system, follow these best practices:

Regular CalibrationActive Systems: Regularly calibrate sensors to ensure accurate temperature readings.Passive Systems: Periodically check data loggers for battery levels and data storage status.Proper PlacementActive Systems: Place sensors strategically to ensure accurate coverage of the pharma cold room.Passive Systems: Position data loggers in critical areas to capture temperature fluctuations.Data ReviewActive Systems: Regularly review temperature logs for any anomalies or patterns.Passive Systems: Periodically download and analyze data logs.Emergency PlansPassive Systems: Develop contingency plans that consider periodic data recording and potential data gaps.