Museum Collection Freezing System for Pest Control

The Walk-In Freezing Chamber is a room-scale low-temperature treatment configuration under the Museum Collection Freezing System for Pest Control product page. It is suitable for batch low-temperature pest treatment of archives, books and other collection materials.

The system combines low temperature and drying. Cooling, low-temperature holding, warming and dehumidification control pests in collection materials while maintaining a relatively stable humidity environment during treatment.

This configuration is suitable for museums, archives, libraries and professional collecting institutions requiring high treatment capacity, a fixed treatment space and batch-loading capability.

The system uses T.R.T low-temperature pest-control and disinfection technology. It lowers the temperature in the treatment space and combines this with drying to treat pests in archives and collection materials.

Prolonged low temperature can reduce pest enzyme activity and terminate normal metabolic activity. Once pests enter the lethal temperature range, free water in their bodies freezes and forms ice crystals that damage cell structures, thereby achieving pest control.

After low-temperature treatment, the system warms and dehumidifies the space so that it gradually returns to ambient temperature.

3.1 Low-Temperature Pest Treatment: The system can lower the treatment space from ambient temperature to below -40℃ in approximately 120 minutes, hold it at -40℃ for approximately 48 hours, and then gradually return it to ambient temperature.

3.2 Penetrating Freezing Treatment: Low temperature can act on archive boxes, boxed loads, bagged loads and other loading forms to treat the collection materials throughout.

3.3 Drying & Humidity Protection: Dehumidification starts after the stopped system warms to 0℃, and humidity in the chamber is controlled while it warms to ambient temperature. After treatment, chamber humidity can be maintained within 45%～65%RH.

3.4 Automatic Control: The system supports automatic and manual operation, with selectable intensive, standard and rapid treatment modes.

3.5 Monitoring & Data Recording: The system displays operating status and temperature in real time and records current alarms, historical alarms, historical data and parameter settings. A USB interface connects external equipment to display, generate or print temperature-data curves and charts.

3.6 Optional Remote Monitoring: Remote communications can be configured for off-site monitoring, historical-record viewing, and email and SMS alarms.

3.7 Optional Remote Control: A mobile app can operate on-site equipment within network coverage; the remote parameter screen is identical to the touchscreen.

The control system provides:

• Operator and user authorization management;
• Automatic/manual mode switching;
• Real-time operating-data display;
• System-configuration settings;
• Parameter settings;
• Alarm-parameter settings;
• Calibration-parameter settings;
• Current-alarm display;
• Historical-alarm records;
• Historical-data records;
• Parameter retention after power loss.

The system includes multiple safety-protection functions:

• Moisture protection;
• Frost protection;
• Overtemperature protection;
• Anti-theft protection;
• Fault alarms;
• Abnormal-parameter prompts;
• Dual manual/automatic operating modes.

The thermal-insulation system uses fireproof and flame-retardant construction and can be disassembled and assembled on site according to the project.

A large Walk-In Freezing Chamber can be designed and manufactured to the project-site dimensions.

Chamber-body materials can be selected from:

• 304 stainless steel;
• Aluminium;
• Colour-coated steel sheet.

Air cooling or water cooling can be used according to the operating environment.

The complete equipment can be disassembled and assembled on site.

Suitable for:

• Archives;
• Books;
• Paper-based collections;
• Cultural objects;
• Other collection materials suitable for low-temperature treatment;
• Museum, archive and library collections requiring batch low-temperature pest treatment.

Customization is available according to project requirements, including:

• Treatment-room length, width and height;
• Treatment capacity;
• Air-cooled or water-cooled operation;
• 220V～380V voltage configuration;
• 304 stainless-steel, aluminium or colour-coated-steel chamber body;
• Treatment modes;
• Remote monitoring;
• Remote control;
• Ozone;
• Negative-ion air purification;
• On-site disassembly and combined installation.

The Cabinet & Chest Freezer is a small- and medium-batch low-temperature treatment configuration under the Museum Collection Freezing System for Pest Control product page.

This configuration uses cabinet or chest-freezer construction for low-temperature pest treatment of archives, cultural objects, books and other collection materials.

A chest freezer, upright freezer or large-capacity cabinet treatment unit of 1～5m³ can be selected according to load, door dimensions and site conditions.

2.1 Chest Freezer: Chest models are suitable for low-temperature treatment of small and medium batches of collection materials. W in the model code denotes chest construction.

2.2 Upright Freezer: Upright models are suitable for collection materials requiring tiered, drawer-based or vertical loading. L in the model code denotes upright construction.

2.3 Large Cabinet Freezer: Cabinet equipment in the 1～5m³ class is suitable for projects whose throughput exceeds conventional freezers and cabinets but does not require a complete walk-in room system.

The system uses microcomputer control and displays the internal temperature through a digital interface.

The principal control functions include:

• Internal-temperature adjustment;
• Ambient-temperature display;
• Power-failure memory;
• High- and low-temperature alarms;
• Sensor-fault alarm;
• Power-failure alarm;
• Low-battery-voltage alarm;
• Audible buzzer alarm;
• Flashing-light alarm;
• Remote alarm;
• Printing;
• Start-up delay;
• Shutdown-interval protection.

The system uses a high-efficiency compressor refrigeration system with a fan motor and high-density thermal insulation.

Principal features include:

• Rapid refrigeration;
• CFC-free foam insulation;
• Environmentally compatible CFC-free refrigerant;
• Multi-tier shelf-type evaporator;
• Uniform internal temperature;
• Rapid-freezing function;
• Enhanced evaporator-condenser system.

Depending on the model, the following can be provided:

• Double-door construction;
• Safety door lock;
• Wide-voltage compatibility;
• Multiple drawers for classified storage;
• Double internal and external seals;
• Large metal handle;
• Casters;
• Independent fixed feet;
• Rear temperature-measurement port;
• Heated door frame for frost prevention.

Suitable for:

• Archives;
• Books;
• Cultural objects;
• Paper materials;
• Small and medium batches of collections;
• Professional collection materials requiring low-temperature pest treatment.

• For conventional chest construction, select the W series;
• For upright construction and tiered loading, select the L series;
• For a -10℃～-40℃ temperature range, select the 40 series;
• For a -30℃～-50℃ temperature range, select the 50 series;
• For a treatment capacity of 1～5m³, select SALD large-capacity cabinet equipment;
• For a treatment capacity of 15m³ or more requiring a room-scale system, select the Walk-In Freezing Chamber.

Customization is available according to project requirements, including:

• Chest or upright construction;
• Cabinet volume;
• Door dimensions;
• Internal loading arrangement;
• Number of drawers or baskets;
• Low-temperature range;
• Alarm method;
• Remote alarms;
• Printing;
• Temperature-measurement port;
• Casters and fixed feet;
• Ozone function;
• Other project-specific structural configurations.