ADIABATIC SYSTEMS

B

ADIABATIC SPRAY SYSTEMS

Description:
Water atomization system that increases the performance of the air-cooled equipment: a fine fog of water drops is sprayed into the air intake through special nozzles.
Adiabatic saturation reduces the air temperature, increasing the efficiency of the heat exchanger.
The system does not recirculate the water and meets the requirements of Standard VDI 2047-2 certified for health and safety by the Johannes Gutenberg University of Magonza.
The adiabatic system is managed by a speed regulator installed on-board the air-cooled equipment. The adiabatic system is supplied installed, wired and ready-to-use.
N.B.: the maximum limit of use of the adiabatic system is 150 hours/year

Overview:
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature: +10°C / +50°C.
• Hour counter for monitoring system operating time.
• Safety thermostat for draining the system in winter
• Pressure reducer for calibrating the water supply.
• Control pressure switch.
• SOFTWATER electromagnetic decarbonisation unit to minimize the formation of scale in the finned core
• Solenoid valves for supplying and draining the system (the water is drained when the system isn't used).
• Multilayer UV-resistant water supply pipes (PE-Xb / Al / PE-HD)
• Polyamide (PA) hollow cone nozzles.
N.B.: the atomizing system must run at a pressure of 2.5 bars to operate properly. Do not use lower pressures.
At a pressure of 2.5 bars, the flow rate of each nozzle is 1.11 litres/minute.

Technical data:
• Single-phase input, 230 V, frequency 50 Hz.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2006/95/EC.

RECOMMENDED WATER QUALITY
To guarantee system health and hygiene:
• Use drinking water that meets the requirements of EC Directive 98/83.
• Total bacterial count <1000 cfu/ml
• If there is any doubt about possible bacterial contamination of the drinking water used to supply the system, an optional UV water sterilization kit is available.

To prevent corrosion of the fined core:
• 6 < pH < 8
• Conductivity <1500 µS/cm
• Chlorides < 100 ppm

To prevent the formation of scale in the finned heat exchanger:
• Hardness 2-4 °f = Max. 1.1-2.2 °dH = Max. 20-40 ppm of CaCO3.
• Use a water softener if necessary.

N.B.: the temperature of the atomized water must be at least 5K lower than the temperature of the process fluid flowing out of the heat exchanger.

Z

INDUSTRIAL ADIABATIC SYSTEMS (PADS)

Device for humidifying the intake air through adiabatic panels increasing the unit performance.

Description:
Intake air wetting system with evaporator panels that increases the performance of the air-cooled equipment: the intake air is forced through the wet panels.
Adiabatic saturation reduces the air temperature, increasing the efficiency of the heat exchanger.
The system does not recirculate the water and meets the requirements of Standard VDI 2047-2 certified for health and safety by the Johannes Gutenberg University of Magonza.
The adiabatic system is managed by a speed regulator installed on-board the air-cooled equipment.
Standard shipment (optimized for common means of ground transportation): the evaporator modules are supplied separately from the air-cooled equipment (only “Combo” and “Superjumbo” models).
The industrial adiabatic system is supplied fully installed, wired and ready-to-use.

Overview:
-Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature: +10°C / +50°C.
• Hour counter for monitoring system operating time.
• Ambient temperature and humidity sensor.
• Electrically actuated valves for supplying and draining the system (the water is drained when the system isn't used).
• Multilayer UV-resistant water supply pipes (PE-Xb / Al / PE-HD).
• Manual brass flow regulator.
• Aluminum distributor (1050-H24 alloy in compliance with EN 573-3) fully accessible for inspection, painted on request.
• Aluminum self-draining drip tray (1050-H24 alloy in compliance with EN 573-3), painted on request.
• Pure recyclable cellulose humidifier panel, with high power of absorption, impregnated with biocidal and antibacterial agents.
• Pure recyclable cellulose water drop distributor and separator panel.
• Galvanized, arc-welded protective mesh, painted on request.

Technical data:
• Single-phase input, 230 V, frequency 50 Hz.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2006/95/EC.

RECOMMENDED WATER QUALITY
To guarantee system health and hygiene:
• Use drinking water that meets the requirements of EC Directive 98/83.
• Total bacterial count <1000 cfu/ml
• If there is any doubt about possible bacterial contamination of the drinking water used to supply the system, an optional UV water sterilization kit is available.

To prevent corrosion of the fined core:
• 6 < pH < 8
• Conductivity <1500 µS/cm
• Chlorides < 200 ppm

To prevent the formation of scale in the finned heat exchanger:
• Hardness <25 °f = 14°dH = Max. 250 ppm of CaCO3.

A.S. Manager

A unique controller for the control and diagnostics of all Refrion adiabatic systems and related on-board equipment (pressure, temperature and humidity sensors, UV lamps, actuation valves).

Overview:
• Enclosure in UV resistant plastic, protection rating IP54 (IEC Standard 60529).
• Operating temperature -25°C +50°C
• Multifunction LCD Display (resolution 128x64), remote control distance 600m
• 4 control buttons
• Multilanguage menu

Technical data:
• Single-phase supply, voltage 100-240V, frequency 50/60Hz.
• Power supply overcurrent protection using fuse
• USB Host Interface allows flash drive connection to upgrade software and download data logs
• RS485 interface
• Signal buzzer
• Electromagnetic system for reducing limescale build-up
• Complies with European Directive 2014/30/EU EMC
• Complies with European Directive 2014/35/EU LVD

Features:
• Non-volatile memory to retain parameters and event logs
• RTC (Time/Date) with battery backup
• Humidity/temperature sensor
• Input: remote start/stop (clean contact or Modbus)
• Output: operating state (clean contact)
• Output: alarm state (clean contact)
• Output: room thermostat state (clean contact)
• 2 password levels: user/manufacturer

Connectivity:
• RS485 Modbus RTU Slave communication interface

WATER RECIRCULATION SYSTEM SKID

WATER RECIRCULATION SYSTEM SKID

Designed to minimise water consumption in a closed circuit adiabatic system.
The water used to humidify the pads which allow the adiabatic saturation of the air is directed into the basin and redirected into the circuit through the recirculation pump.
Water consumption is thus limited to the quantity evaporated during the adiabatic process.

V

ULTRAVIOLET LAMP FOR ADIABATIC COOLING SYSTEM

Description:
The UV lamp sterilizes the water in the adiabatic system (UV-C rays = 254 nm) emitting UV rays lethal to pathogens (including Legionella), providing an alternative effective solution to chemical biocides.
Unlike chemical treatments, UV sterilization does not use any harmful substances or add any toxic-noxious component to the water.
The intense biostructural disorder induced by this radiation interferes with the development and the reproductive capacity of every kind of micro-organism, making them inoffensive.

Overview:
The UV sterilizing lamp is installed and wired inside the adiabatic system control box.

Technical data:
• Single-phase input, 230 V, frequency 50 Hz.
N.B.: the dimensioning of the lamp size is optimized for the maximum water flow required by the adiabatic system.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2006/95/EC.

Additional recommended water quality requirements:
• Fe < 0.3 ppm
• Hardness <12 °f = 6.7°dH = Max. 120 ppm of CaCO3.
• S.A.C. (Spectral Absorption Coefficient) > 20 1/m S.A.C. (Spectral Absorption Coefficient) > 20 1/m

REFRION S.r.l. Vicolo Malvis, 1 - 33030 Flumignano di Talmassons (UD) - P.IVA 03094850231

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