Aquatechplus Pvt. Ltd.

Kuvadva Road, Rajkot, Gujarat

2. CONDENSER DETAILS (WATER COOLED SHELL & TUBE)

2. CONDENSER DETAILS (WATER COOLED SHELL & TUBE)

20 TR AIR COOLED SCROLL TYPE WATER CHILLER

20 TR AIR COOLED SCROLL TYPE WATER CHILLER

FMACSC-80TR-R407C air-cooled chiller; cooling duty 80 TR (280 kW); configuration single refrigeration circuit. Power supply 400 V / 3Ph / 50 Hz; connected load 70.25 kW; rated current 114.8 A. Refrigerant R407C with thermostatic expansion valve; design conditions 7C evaporation, 50C condensation; ambient suitability up to 45C. Chilled water temperature band +10C to +20C.

Chilled water quantity 6000 LPH @ T 35C. Heat rejection by air-cooled condenser with copper tubes and aluminum fins; airflow generated by four axial suction fans, 28-inch diameter. Fan rating 0.65 kW each; combined airflow 30, 720 CFM; structure galvanized steel.

Compression via one semi-hermetic screw compressor by Bitzer; motor input 63.9 kW; current 105.4 A @ 50 Hz. Starting arrangement stardelta; capacity regulation step control 0100%.

Evaporator type shell-and-tube; shell powder-coated carbon steel; tubes inner-grooved copper; baffles/headers SS-304, TIG welded. Pressure rating 10 bar; hydro test 15 bar; water nozzles 3-inch BSP. Insulation 40 mm closed-cell PUF.

Circulation pump integral, rating 3.75 kW (5 HP); discharge 50, 000 LPH; head 2.33 kg/cm. Condenser refrigerant line size 3/8 inch. Safety coverage: HP/LP switches, overload protection, phase reversal, flow interlock, anti-freeze logic, discharge temperature cut-out, internal thermostat, low water level protection.

Control system factory-assembled electrical panel with MCBs, contactors, overload relays, timers, PLC, HMI; wiring and testing completed prior to dispatch. Overall dimensions and GA drawings after order confirmation.

FMACSC-85TR-R407C air-cooled industrial chiller cooling duty 85 TR (302 kW) refrigeration topology single closed loop
Electrical feed 400 V / 3 / 50 Hz power draw 73.0 kW nominal current 122 A
Refrigerant R407C expansion device TXV thermal points 7C evap / 40C cond design ambient 48C
Chilled water operating span +7C to +20C

Hydronic capacity 50, 000 LPH @ T 5C
Heat dissipation system air-cooled condenser module (copper tubealuminum fin core) ventilation by four axial suction fans, 630 mm
Fan input 1.5 kW each aggregate airflow 70, 000 CFM support chassis galvanized steel

Compression package single semi-hermetic screw compressor supplied by Bitzer drive power 67.0 kW running current 102 A @ 50 Hz
Motor initiation stardelta load control progressive step unloading 0100%

Evaporator unit shell-and-tube heat exchanger pressure body powder-coated carbon steel tube bundle inner-grooved copper flow control SS-304 TIG-welded baffles and headers
Pressure rating 10 bar hydro test 15 bar water interface 3-inch BSP
Thermal insulation 40 mm closed-cell PUF

Circulation arrangement 2 SS-304 centrifugal pumps, 5.5 kW each, configuration 1 operating + 1 standby
Condenser refrigerant line 3/8 inch
Protective systems HP/LP safeties overload protection phase sequence check flow verification freeze prevention logic discharge temperature limiter internal thermostat low-water cut-off

The FIDEM water-cooled glycol screw chiller, identified as model FM-GWCS-170-407C, is engineered to deliver a rated refrigeration output of 170 TR (approximately 599 kW) and operates with R407C refrigerant, providing efficient, consistent, and reliable heat transfer performance. The unit is configured with two fully independent refrigeration circuits, ensuring high operational reliability, inherent system redundancy, and stable cooling performance across a broad range of load conditions. The chiller is suitable for connection to a three-phase, 415 V, 50 Hz electrical supply, with an estimated connected electrical load of 140 kW and a full-load current of approximately 230 A. Precise refrigerant metering and effective capacity modulation are accomplished through an electronic expansion valve, enabling quick system response and improved energy efficiency during part-load operation.

The system is equipped with a shell-and-tube evaporator specifically designed for chilled glycol service and operates at a saturated suction temperature (SST) of +5 C. The evaporator is designed to operate over a glycol temperature range of 0 C at inlet to 15 C at outlet, delivering a glycol flow rate of 100, 000 LPH, which corresponds to an effective temperature differential of approximately 5 C. The evaporator assembly comprises two circuits and delivers a net cooling capacity of approximately 600 kW. The evaporator shell is fabricated from 10 mm thick seamless carbon steel, while heat transfer is achieved using internally grooved copper tubes arranged in a U-bundle configuration to enhance thermal efficiency. The evaporator is provided with DN150 flanged connections and is designed for a maximum water-side pressure drop of 0.4 bar, a water-side design pressure of 10 bar, and a refrigerant-side design pressure of 25 bar.

Continuous circulation of chilled glycol is provided by a centrifugal monoblock pump supplied as part of the chiller package. The pump is rated for a flow capacity of 90, 000 LPH at a total developed head of 15 meters and is driven by a 7 kW electric motor, ensuring steady and dependable glycol circulation through the evaporator and associated process piping network.

The water-cooled condenser, also of shell-and-tube construction, is designed to operate at a saturated discharge temperature (SDT) of +35 C. The condenser is capable of rejecting a total thermal load of 720 kW and features a carbon steel shell with epoxy coating to enhance corrosion resistance and extend service life. The condenser heat transfer surface consists of plain copper tubes arranged in a removable bundle, allowing convenient access for inspection and routine maintenance. The condenser is designed for a cooling water flow rate of 100, 000 LPH, fitted with DN200 flanged inlet and outlet connections, and maintains a water-side pressure drop not exceeding 0.4 bar. The design pressure limits are 10 bar on the water side and 30 bar on the refrigerant side.

Cooling water circulation through the condenser is ensured by a centrifugal monoblock pump rated for 100, 000 LPH at a head of 10 meters. The pump is powered by a 7.5 kW motor, suitable for operation on a 380415 V, 50 Hz electrical supply, ensuring smooth and efficient condenser water circulation.

The refrigeration system incorporates compact screw compressors designed for continuous-duty operation, heavy-load applications, and extended service life. Compressor capacity control is achieved through step-wise modulation, with unloading stages of 25%, 50%, 75%, and 100%, enabling efficient operation under partial-load conditions. Compressor starting is carried out using a star-delta starting method. The compressor package delivers a rated cooling capacity of 599 kW, with a power input of approximately 121 kW, operating at a full-load current of around 201 A at 400 V, and is suitable for operation within a voltage range of 380415 V.

30 TR AIR COOLED SCROLL TYPE GLYCOL / WATER CHILLER

Additional Technical Parameters & Features Performance Data (Typical) EER / COP: EER: 3.03.4 (air-cooled) COP: 3.54.2 (water-cooled) Note: Actual efficiency depends on ambient temperature and water T. Power Consumption: Approx. 3.54.5 kW at full load (air-cooled) Note: Lower power consumption at part load conditions. Expansion Device Thermostatic Expansion Valve (TXV) Electronic Expansion Valve (optional for higher efficiency) Note: EEV provides better part-load performance and tighter temperature control. Refrigerant Circuit Accessories Filter drier Sight glass with moisture indicator Suction accumulator Service valves (suction & discharge) Water Piping Connections Chilled water inlet / outlet: 1" or 2" BSP / Flanged (model dependent) Vent & drain connection provided Note: Flexible hose connection recommended to reduce vibration. Temperature Control Accuracy 0.5 C (standard controller) 0.3 C (with advanced PID controller optional) Note: Suitable for precision process cooling applications. Part Load Operation Single compressor ON/OFF control (standard) VFD on compressor (optional limited models) Note: VFD improves energy efficiency and reduces starting current. Starting Method Direct-On-Line (DOL) starter Soft starter / VFD (optional) Note: Recommended where power supply is weak or generator operated. Electrical Load (Typical) Full Load Current: 79 A (415 V, 3-phase) Short Circuit Protection: MCB / MCCB Control Voltage: 230 V AC / 24 V DC (model dependent) Standards & Quality Designed as per AHRI / ASHRAE guidelines Electricals as per IEC standards Pressure vessels tested as per applicable codes Installation Requirements Minimum clearance around unit: 9001000 mm Level concrete foundation recommended Proper airflow must be ensured for air-cooled units Note: Poor ventilation can reduce capacity and increase power consumption. Operating Limits Minimum ambient: 10 C Maximum ambient: 50 C Minimum chilled water inlet temperature: 5 C Note: Glycol required for lower temperature applications. Optional Accessories SS 304 / SS 316 piping Glycol compatible design Remote monitoring via Modbus / RS-485 Heat recovery condenser (water-cooled models) Acoustic enclosure for ultra-low noise applications Warranty Compressor: 1218 months from commissioning Complete unit: 12 months Note: Extended warranty available on request. Suitable Industries (Extended) Printing & packaging Chemical & API plants Rubber & extrusion machines PET blow molding Data room / equipment cooling

The FM2-275X57XH air-cooled chiller is designed to deliver a nominal refrigeration capacity of 274.0 TR (approximately 962 kW) and is built with two independent refrigeration circuits to provide reliable, uninterrupted, and stable operation across a wide range of load conditions. The unit is suitable for connection to a three-phase, 415 V, 50 Hz power supply, with a total connected electrical load of 304.0 kW and a full-load operating current of approximately 490 A. The refrigeration system utilizes R134a refrigerant, with accurate regulation of refrigerant flow and cooling capacity achieved through an expansion valve operating in a flooded system configuration, ensuring smooth system operation and improved overall energy efficiency. The chiller is engineered to operate at an evaporating saturated suction temperature (SST) of +5.6 C, corresponding to a leaving chilled water temperature (LWT) of 6.07 C. Heat rejection performance is rated at a condensing temperature of +45 C SDT, under a maximum ambient temperature of +46 C. The system is designed to support a chilled water operating temperature range from 5 C to 20 C, with a chilled water flow requirement of 415.3 L/s (approximately 1495 m/h), corresponding to an effective temperature differential of approximately 5.6 C. The unit is provided with a flooded shell-and-tube evaporator, designed to ensure high heat transfer efficiency and stable thermal performance. The evaporator shell is fabricated from powder-coated carbon steel, while the heat transfer tubes are manufactured from copper, supported by carbon steel baffles and headers. The evaporator is designed for a water-side design pressure of 15.0 kg/cm and is hydrostatically tested at approximately 22 bar. Chilled water connections are provided through DN150 (approximately 6 NB) flanged nozzles, suitable for the specified flow conditions. To limit heat ingress and prevent surface condensation, the evaporator is insulated with 40 mm thick PUF insulation. The refrigeration package incorporates two semi-hermetic flooded screw compressors, equipped with a star-delta starting arrangement to limit starting current and reduce mechanical stress during startup. Cooling capacity control is achieved through step or slide valve modulation, allowing efficient operation under partial-load conditions and improved IPLV performance. The total installed compressor power is 264 kW, ensuring dependable and robust cooling performance over a wide operating range. Heat rejection is achieved by means of an air-cooled condenser consisting of copper tubes with aluminum fins, mounted on a galvanized steel structural frame for enhanced durability and corrosion resistance. The condenser is designed for a total airflow capacity of 394, 168 CMH, generated by 16 axial-type, low-noise fans, each having a 910 mm diameter, in accordance with standard design practices for a 275 TR capacity unit. The total installed fan power is 40.0 kW, with each fan driven by a 2.5 kW motor, ensuring effective heat dissipation even under high ambient conditions. The chiller is supplied without an integral chilled water pump, and therefore external pumps are to be provided by the client, with pump head and selection to be finalized based on site-specific requirements. The unit is equipped with comprehensive safety and protection systems, including compressor over-temperature protection, high- and low-pressure safety switches, over-current and over-temperature protection, flow switch, phase sequence and phase failure protection, and oil safety devices, ensuring safe and reliable system operation. The electrical control system is housed in a factory-assembled and pre-wired electrical control panel, incorporating a PLC and HMI for system monitoring and control, along with MCCBs, contactors, overload relays, timers, and auxiliary relays, providing user-friendly operation, effective system protection, and advanced fault diagnostics. The overall dimensions of the chiller

FIDEM WATER COOLED SCREW TYPE CHILLER (150 TR)

The supplied system is a FIDEM make water-cooled screw type chiller, identified by model FM-WCS-150-407C, and designed to achieve a rated refrigeration capacity of 150 TR, which is equivalent to approximately 527 kW of effective cooling output. The chiller package is arranged with two (2) fully independent refrigerant circuits, providing enhanced operational reliability, system redundancy, and balanced compressor loading. The unit is suitable for operation on a three-phase, 415 V, 50 Hz AC electrical supply, with a maximum connected electrical demand of 112.1 kW and a full-load current requirement of 204.8 amperes. The refrigeration system employs R-407C refrigerant, and accurate modulation of refrigerant flow is achieved through the use of an Electronic Expansion Valve (EEV), ensuring stable, efficient, and responsive system operation.

The chiller is equipped with a water-cooled shell and tube type evaporator, designed to operate at an evaporating saturation temperature (SST) of 10 C. The system is intended for applications requiring a chilled water operating temperature range from 15 C to 20 C. The evaporator assembly incorporates two (2) refrigerant circuits and is sized to handle a chilled water flow rate of 19, 700 LPH, corresponding to a temperature differential of approximately 23 C, thereby delivering a cooling capacity of 527 kW.

The evaporator shell is constructed from carbon steel with a minimum wall thickness of 10 mm using seamless fabrication, ensuring high structural strength and long operational life. Heat transfer is facilitated by internally grooved copper tubes arranged in a U-bundle configuration, which improves overall thermal performance. The evaporator is provided with 6-inch water inlet and outlet connections and is designed for a water-side pressure drop of 0.4 bar. The maximum allowable working pressure on the water side is 10 bar, while the refrigerant-side design pressure is rated at 25 bar.

Chilled water circulation through the evaporator is maintained by a centrifugal mono-block pump, rated for 90, 000 LPH at a total dynamic head of 15 meters, and driven by a 5.5 kW electric motor.

The condenser is a water-cooled shell and tube type heat exchanger, designed to operate at a condensing saturation temperature (SDT) of +35 C. The condenser is capable of handling a total heat rejection load of 718 kW. The shell is fabricated from carbon steel and coated with epoxy paint to provide effective corrosion protection, while the heat transfer surface consists of plain copper tubes assembled in a tube bundle configuration.

The condenser is fitted with 6-inch cooling water inlet and outlet connections and is designed for a cooling water flow requirement of 140, 000 LPH. The pressure drop on the water side is limited to 0.4 bar, with a water-side design pressure of 10 bar. The refrigerant-side design pressure is rated at 30 bar.

Cooling water circulation for the condenser is achieved by a centrifugal mono-block pump, rated for 110, 000 LPH at a head of 10 meters, and driven by a 5.5 kW motor suitable for operation on 380415 V, 50 Hz power supply.

The chiller is fitted with a compact screw type compressor, designed to deliver a cooling output of approximately 550 kW. The compressor is suitable for continuous operation at full load (100%) and supports step or stepless capacity modulation at 25%, 50%, 75%, and 100%, allowing efficient matching of cooling output to varying load conditions. The compressor is equipped with a star-delta starting arrangement, with Variable Frequency Drive (VFD) operation available as an optional feature. The compressor electrical power input shall be as per system design and actual operating conditions.