Custom 91 m³ DOT DROGON Dry Room for ENEA

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Il Disgelo designed for ENEA a custom DOT DROGON Dry Room of approximately 91 m³, intended for research activities requiring extremely controlled thermo-hygrometric conditions and very low humidity levels.

The solution was developed to maintain an internal temperature between +23 °C and +25 °C, with a dew point down to −45 °C with two operators inside and down to −60 °C with the room empty, integrating an insulated structure, dedicated air treatment, distribution through perforated ducts and specific provisions for activities involving moisture-sensitive materials.

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Developed Solution

The Dry Room is built using modular prefabricated sandwich panels with high-density expanded polyurethane insulation, approximately 100 mm thick, and a pre-painted galvanized steel finish.

The structure integrates a dedicated airlock with double access, together with an additional connection to the storage area, allowing controlled movement of operators, materials and equipment.

The low-dew-point area is also equipped with a resin-coated floor acting as a vapour barrier, a fundamental feature for maintaining the required hygrometric performance.

The air-treatment system is connected to an enthalpy drying system and uses perforated air ducts designed to provide homogeneous air distribution throughout the usable volume.

The solution was developed to ensure:

• custom Dry Room environment of approximately 91 m³;
• controlled temperature between +23 °C and +25 °C;
• dew point down to −45 °C with two people inside;
• dew point down to −60 °C with the room empty;
• management of an operating area of approximately 26 m² at ultra-low humidity;
• dedicated airlock for controlled access;
• uniform air distribution through perforated ducts;
• resin-coated flooring acting as a vapour barrier;
• highly insulated modular structure;
• integration with an enthalpy drying system;
• dedicated refrigeration system for pre-cooling and post-cooling of the dryer;
• possibility of remote installation of the refrigeration unit;
• provisions for technical gases;
• oxygen monitoring;
• differential pressure control;
• emergency extraction;
• dedicated glove box for ultra-low dew point activities;
• parameter logging and supervision through CliMaLogic®;
• Ethernet, VNC Viewer and Modbus TCP/IP connectivity.

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Main Technical Data

• customer: ENEA;
• model: DOT DROGON DRY ROOM;
• usable volume: approx. 91 m³;
• internal usable dimensions: approx. 7795 × 4600/5880 × 2400 mm;
• external dimensions: approx. 9325 × 4800/6100 × 2500 mm;
• operating temperature: +23 °C to +25 °C;
• temperature stability: ±1 °C;
• maximum allowable heat dissipation at +23 °C: approx. 4 kW;
• dew point with two operators inside: down to −45 °C;
• dew point with empty room: down to −60 °C;
• maximum number of people in the controlled area: 2;
• low-dew-point controlled area: approx. 26 m²;
• approximate weight: approx. 3500 kg;
• noise level: approx. 73 dB(A) at 1 m;
• insulation: expanded polyurethane, approx. 100 mm thickness;
• insulation density: approx. 40/42 kg/m³;
• panel fire reaction classification: B-s2,d0;
• airlock doors: approx. 1100 × 2000 mm;
• inspection windows: configurations up to 2000 × 1000 mm;
• floor: resin-coated with vapour-barrier function;
• refrigerant: R449A;
• compressor: semi-hermetic Dorin;
• condensation: air-cooled, with remote installation option;
• air distribution: perforated ducts;
• control: PLC with CliMaLogic® software;
• programming: up to 500 programs with 20 steps each;
• data logging: CSV export via USB;
• connectivity: Ethernet, VNC Viewer and Modbus TCP/IP.

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Integrations and Safety

The configuration includes a range of accessories developed for the specific requirements of the laboratory:

• glove box for handling materials in an ultra-low-humidity atmosphere;
• localized dew point down to −60 °C inside the glove box;
• mobile extraction hood;
• four 80 mm side feedthroughs;
• resin-coated floor;
• ATEX emergency extractor;
• air-duct shut-off valves;
• differential pressure sensor;
• three sealed quick-connect fittings for technical gases;
• oxygen sensor;
• provisions for remote management and supervision.

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Result

The project enables ENEA to operate a large-scale Dry Room designed to work at extremely low dew point levels, while maintaining controlled conditions even with operators inside the environment.

The combination of approximately 91 m³ of usable volume, dew point down to −60 °C, dedicated airlock, vapour barrier, perforated air distribution and dedicated glove box makes the solution suitable for advanced experimental activities on materials and components particularly sensitive to humidity, while maintaining high flexibility and integration with laboratory systems.