RWD
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Catalog excerpts

RWD - 1

RWD Air-cooled liquid coolers. Cooling capacities 10 - 372 kW. RWD provides medium temperature cooling, or freecooling in winter when mated with a chiller, ensuring exceptional energy savings and rapid pay-backs versus chiller only solutions. RWD features all system components installed on-board. AN ENVIRONMENT-FRIENDLY SOLUTION REDUCED COSTS, REDUCED ENVIRONMENTAL IMPACT RWD liquid coolers, with finned coils and axial fans, are the ideal solution for the free-cooling of applications in which the process temperature is higher than the ambient temperature for most of the year. Exploiting low ambient air temperatures, RWD cools the fluid free of charge, eliminating energy wastages caused by running refrigerant compressors during winter. Cooling towers suffer substantial costs due to the treatment of the process water. Because it uses a closed circuit, RWD does not require any form of process fluid treatment and eliminates liquid losses caused by evaporation. PLUG AND PLAY From RWD200 the main components such as 3-way valves, manifolds, and single or double pumps can be installed in the unit. RWD can be installed outdoors thanks to the IP54 protection rating and epoxy surface coating of the frame. Consequently no time is lost in component selection and RWD installation is rendered quick and easy. FREE-COOLING In new plants customers can select the RWD model which provides the ideal compromise between installation cost and return on investment. In the case of existing plants retrofitting an RWD equipped with a 3-way valve in series with the system chiller is a viable solution. Installation of an RWD not only increases the life of the chiller, but also allows significant energy saving levels ensuring a return on the initial investment in approximately twelve months. ACCESSORIES • • • • MICROPROCESSOR CONTROLLER • • • • • RWD units can be equipped with a microprocessor featuring an intuitive graphic interface. The controller manages the fans independently, starting them in steps in proportion to the fluid inlet temperature. Model RWD 010 Cooling power Absorbed power Water ow Pressure drop kW kW l/h bar Fans Absorbed power n° dB(A) Power supply Depth Width Height Height with legs Weight V/Ph/Hz mm mm mm mm Kg Water connections without manifolds Water connections with manifolds Electrical panel; Microprocessor controller; Electronic fan speed regulation (special); Differing head pressure pumps in single or twin configurations (RWD 200-350) (special); Metal mesh protection filters for coils; 3-way valves + manifolds (RWD 200-350) (special); 60Hz power supply (special); Manifolds kit; Horizontal installation kit (RWD 030-150). 020 030 040 050 075 100 150 200 250 300 350 10 0,5 1797 0,162 20 1 3470 0,267 31 2 5315 0,337 41 2 7052 0,267 49 2 8522 0,384 69 4 11899 0,600 97 4 16821 0,341 133 6 23126 0,639 195 8 33822 0,330 248 10 43079 0,530 304 10 52783 0,390 372 12 64653 0,66 1 48 2 51 1 60 1 59 1 58 2 62 2 61 3 63 4 64 5 65 5 64 6 66 2145 779 1364 1534 413 2145 779 1364 1534 423 2145 779 1364 1534 433 3042 779 1364 1534 562 400±10%/3/50 3959 4860 779 779 1364 1364 1534 1534 679 821 4390 1510 1485 1064 5295 1510 1485 1271 5295 1510 2085 1543 6200 1510 2085 1803 G 2” - G 2” - 230±10%/3/50 847 1682 440 440 763 763 57 109 G 1” - G 1” - G 1 ½” G 1 ½” G 1 ½” - G 2” - G 2” DN 80 G 2” G 2 ½” G 2 ½” DN 80 DN 100 DN 100 Values refer to standard units at the following operating conditions: 6T 10°C between water inlet temperature and ambient temperature, 6T 5°C between water inlet temperature and water temperature at outlet from chiller located at sea level and with 0% glycol. Model RWD 020 is available also in a version for connection to a 400V±10%/3/50Hz power supply. Sound pressure level in hemispherical field at 10 m from condenser side and 1.6 m from ground. Values with tollerance ± 2 dB. The sound levels refer to operation of the unit under full load in nominal conditions.

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