Air Cooled Scroll Chiller Functions and Features
EFFICIENT SCROLL COMPRESSORS of Danfoss (Denmark) or Copeland (USA) are provided as standard in all air cooled scroll chiller packages. These compressors come with a high efficiency in built motor and hybrid-wrap scroll design that helps reduce energy costs in normal operating conditions and delivers high capacity and an optimized pressure ratio for air conditioning applications.
MULTIPLE COMPRESSORS guarantees higher reliability and reduces starting current, making them ideal for small and medium industry applications without having to increase the installed grid power load, switchgear, transformers and generator rating hence saving initial capital costs. In part load conditions, only the number of compressors that are required to meet the load requirement are switched ON. All models except 5 TR, 7.3 TR & 11.2 TR incorporate scroll compressors installed in tandem circuit.
TOP DISCHARGEof exhaust air from the condenserenables installation on roof tops, besides multiple units can also be installed next to each other.
HIGH COP/EER as a result efficient condensing of the refrigerant. These air cooled scroll chiller units are designed to meet the applicable requirements of ASHRAE/ANSI 15 Safety Code. Since these condensers are generously sized, efficient condensing of the refrigerant leads to lower IKW compared with other available brands. During part load conditions the entire condenser coil surface area is utilised to reject heat even if one compressor is in operation thereby increasing operating efficiency.
SHELL & TUBE EVAPORATOR is built with copper tubes of 19 SWG that enables them to withstand hard water with PH even greater than 8. The copper tubes contain Flamingo patented star turbulator inserts that provide turbulence to the refrigerant flowing through the copper tubes. As a result of this turbulence these Shell & Tube evaporators have extremely efficient heat transfer with the copper tube. The shell is manufactured from high-grade steel. The evaporator is designed as per ASME Section VIII Div.1.
HIGH AMBIENT TEMPERATURE of 45 deg. C considered as basis of design. This ensures higher reliability even in the toughest summer conditions. For installations meant for conditions that also experience sub-zero temperatures, anti-freezing elements are factory installed.
ULTRA EFFICIENT CONDENSING using inner grooved copper tube results in power savings and lower maintenance costs. The fins are CNC manufactured in special grade aluminium of 0.15 mm thickness that are mechanically expanded around internally grooved 0.5 mm thick copper tube, in a staggered sine wave pattern. AXIAL FANS of 5-lobe, bird-wing design are a standard feature of air cooled scroll chiller range. The number of fans switched ON is automatically controlled depending on the compressor discharge pressure. This feature also results in substantial power savings.
AVAILABLE IN A CHOICE OF REFRIGERANTS R-22 (Freon), R-407C and R-134a. Both R-407C and R-134A are environment friendly and non-ozone depleting refrigerants.
THERMOSTATIC EXPANSION VALVE is provided as a standard part of the air cooled scroll chiller equipment.
CONTROL PANEL with IP-65 protection is provided as standard part of the air cooled scroll chiller equipment. The control panel is rain protected keeping in mind its installation in open spaces.
MICROPROCESSOR BASED CONTROLLER is a standard part of the air cooled scroll chiller equipment. The controller allows numerous set points that can be configured to particular set of values that may be considered within the safe operating range. In case of any breach in any of the set point value the controller will trip the chiller after the fed safety delay period has passed and display it on the LCD display. Besides, the controller automatically adjusts the number of condenser fans and compressors that need to be switched ON ensuring power saving.