Dry Rooms (DRS)
Working directly with clients, our engineers develop turnkey dry room solutions for use in research laboratories and production areas.
Dry rooms are designed to maintain temperatures from +20C to +40C, and maintain relative humidities to less than 1% (supply air dewpoints as low as -60C).
For those who need a customized solution backed by end-to-end services, our DRS series offers the specific capabilities you need with dependable, energy-efficient operation and ongoing value.
As background, a low dewpoint dry room is an insulated wall, self-contained, vapor-tight enclosure operating at temperature setpoints generally between from 65°F to 75°F and at relative humidity setpoint as low as 0.5%, or room dewpoint setting of -35 F. This is achieved with delivered air of less than 0.1 grains / lb, or delivered air dewpoint of -70 F.
Low dewpoint dry rooms are typically built to support the battery industry, and in turn support the hybrid vehicle industry. The environment must be essentially ‘moisture-free’ due the hygroscopic nature of such items. The low dewpoint condition is critical as violent reactions can occur with even small amounts of moisture.
Low dewpoint dry rooms are also built to support the pharmaceutical industry, for applications when the presence of moisture during the manufacturing and packaging can cause degradation in the product’s quality.
Airflow for cooling/heating/dehumidification is typically* provided by a Munters brand dehumidification ‘skid’ system located local to the room(s), not inside the room, preserving valuable user space.
The skid system features double wall construction with 1/8” thick aluminum paneling. Each skid system is custom designed to meet the specific design requirements of the client while being service friendly and both spatially and energy efficient. (*Smaller room systems may benefit from split cooling and DH systems for efficiency of equipment size and cost).
Airflow to and from this skid is ducted through fully seam welded aluminum for minimal infiltration of ambient air and moisture. All exterior ductwork is also insulated to minimize heating/cooling load. Ducted air is delivered into a ceiling cavity comprised of energy efficient T-5/T-8 troffer lights, sound absorbing acoustical tiles, and perforated tiles - these tiles which deliver air uniformly downwards throughout all of the workspace. Air is returned via a segregated end section of the ceiling cavity with open acrylic tiles.
All ductwork, supply registers, and return registers are carefully designed for optimal size and aspect ratios, low sound level, and field balancing capability. As applicable, supply and return ductwork is installed within the ceiling cavity to minimize room clearance requirements and minimize duct leakage and heat exchange to building ambient air. Lighting is carefully optimized via computer programs for best distribution/uniformity and highest ‘lumens per watt’.
Control of the dehumidifier skid functions and alarming is by a local PLC controller at the system, and the main user interface and control is by a touchscreen Dryroom Control System, the ES DCS-3000. The touchscreen features intuitive Windows based programming, and has an easy to read 7” display. Control of temperature and humidity level (if required) is by PID algorithm for exceptionally tight process control. The control system features PLC modules for ease of expansion and replacement, in lieu of older mechanical controls, relays, and small LED indicators/controllers.
Standard control/monitoring points include: Room Setpoint Temperature, Room Actual Temperature, Drier Supply Dewpoint, Room Dewpoint or RH, and Cooling/Heating Signal Demands.
Optional monitoring points include: Room Supply Temperature, Room Return Temperature, Make-Up Air Pre-Cool Coil Exit Temperature, Blend Air Coil Exit Temperature, Drier Wheel Exit Temperature, Reactivation Exit Temperature, Compressor(s) Suction Temperature(s), Compressor(s) Suction Pressure(s), Compressor(s) Discharge Temperature(s), Compressor(s) Discharge Pressure(s), Room Static Pressure, and Condensing Unit Demand %.
Additional controls customization is available upon request. Ethernet-based monitoring and/or control is also available upon request for ease of remote service, troubleshooting, and system updates.
Working closely with the client, ES determines the specifics of the dry room design, which consist of the following:
Standard Features and Options