Aquatechplus Pvt. Ltd.

Kuvadva Road, Rajkot, Gujarat

2. CONDENSER DETAILS (WATER COOLED SHELL & TUBE)

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

The FIDEM water-cooled screw chiller, model FM-WCS-200-407C, is designed to deliver a nominal cooling capacity of 200 TR (approximately 703 kW) and operates on R407C refrigerant. The unit is configured with two independent refrigeration circuits, ensuring reliable and stable performance under varying load conditions. It is suitable for operation on a three-phase, 415 V, 50 Hz power supply, with an approximate total connected electrical load of 150 kW and a full-load current of 243 A. Refrigerant flow is regulated through an electronic expansion valve, enabling precise capacity control and improved part-load efficiency.

The chiller is equipped with a shell-and-tube type evaporator designed for chilled water applications, operating at a saturated suction temperature (SST) of +10 C. The system is designed for a chilled water temperature range of 15 C inlet to 20 C outlet, with a total chilled water flow rate of 26, 500 LPH, corresponding to a temperature differential of approximately 23 C. The evaporator consists of two circuits and provides a cooling capacity of 703 kW. The shell is constructed from 10 mm thick seamless carbon steel, while the heat transfer tubes are made of internally grooved copper tubes arranged in a U-bundle configuration. The evaporator is provided with 6-inch flanged water connections, 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.

A centrifugal monoblock chilled water pump is supplied with the system, rated for a flow capacity of 120, 000 LPH at a head of 16.3 meters. The pump is driven by an 11 kW electric motor, ensuring adequate circulation of chilled water through the evaporator and downstream process or air-conditioning equipment.

The water-cooled condenser is also of shell-and-tube construction and is designed to operate at a saturated discharge temperature (SDT) of +35 C. The condenser has a heat rejection capacity of 718 kW and features a carbon steel shell with epoxy coating for enhanced corrosion resistance. The condenser tubes are manufactured from plain copper tubes arranged in a removable bundle, allowing ease of maintenance. Cooling water flow through the condenser is 140, 000 LPH, with 6-inch flanged connections and a water-side pressure drop limited to 0.4 bar. The condenser is designed for a water-side pressure of 10 bar and a refrigerant-side pressure of 30 bar.

The condenser water circulation is maintained by a centrifugal monoblock pump with a rated capacity of 140, 000 LPH at a head of 15.7 meters. The pump is powered by an 11 kW motor, suitable for operation on 380415 V, 50 Hz electrical supply.

The refrigeration system incorporates compact screw compressors designed for continuous and reliable operation. Capacity control is achieved through step or stepless modulation, with control steps of 25%, 50%, 75%, and 100%, allowing efficient operation under partial load conditions. The compressors are started using a star-delta starter, while VFD operation is available as an optional feature for enhanced energy efficiency and smoother load variation. The compressor section is capable of delivering a cooling capacity of up to 718 kW, with power input dependent on operating and ambient conditions.

The FIDEM water-cooled glycol screw chiller, designated as model FM-GWCS-170-407C, is engineered to deliver a rated refrigeration capacity of 170 TR (approximately 599 kW) and operates on R407C refrigerant, ensuring efficient, stable, and uniform heat transfer performance. The unit is configured with two fully independent refrigeration circuits, providing high operational dependability, built-in redundancy, and consistent cooling output across a wide range of load conditions. The chiller is designed for connection to a three-phase, 415 V, 50 Hz electrical supply, with an estimated connected power demand of 140 kW and a full-load current of approximately 230 A. Accurate refrigerant flow management and capacity regulation are achieved through an electronic expansion valve, enabling rapid response to load variations and improved efficiency during part-load operation.

The system incorporates a shell-and-tube evaporator purpose-built for chilled glycol service and operates at a saturated suction temperature (SST) of +5 C. The evaporator is designed to accommodate a glycol temperature range from 0 C at inlet to 15 C at outlet, delivering a glycol circulation rate of 100, 000 LPH, corresponding to an effective temperature differential of approximately 5 C. The evaporator assembly consists of two circuits and provides a net cooling output of approximately 600 kW. The evaporator shell is fabricated from 10 mm thick seamless carbon steel, while heat exchange is achieved through internally grooved copper tubes arranged in a U-bundle configuration to enhance thermal performance. 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.

Reliable circulation of chilled glycol is ensured 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 continuous and dependable glycol circulation through the evaporator and the 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 comprises plain copper tubes assembled 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 ratings are 10 bar on the water side and 30 bar on the refrigerant side.

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

The refrigeration system incorporates compact screw compressors designed for continuous-duty operation, heavy-load service, and long-term reliability. Compressor capacity regulation is achieved through step modulation, with unloading stages of 25%, 50%, 75%, and 100%, enabling efficient system operation under partial-load conditions. Compressor starting is accomplished using a star-delta starting arrangement. 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 a voltage operating range of 380415 V.

The FIDEM water-cooled screw chiller, identified as model FM-WCS-200-407C, is purpose-built to deliver a nominal cooling output of 200 TR (approximately 703 kW) and operates using R407C refrigerant, ensuring efficient and stable heat exchange. The system is configured with two fully independent refrigeration circuits, providing high operational reliability, redundancy, and consistent performance under fluctuating load requirements. The unit is suitable for connection to a three-phase, 415 V, 50 Hz electrical supply, with an approximate connected power demand of 150 kW and a full-load current of around 243 A. Precise refrigerant control and effective capacity regulation are achieved through an electronic expansion valve, which enhances response accuracy and optimizes part-load operating efficiency.

The chiller is fitted with a shell-and-tube evaporator designed specifically for chilled water applications and operates at a saturated suction temperature (SST) of +10 C. The evaporator is designed for a chilled water temperature profile of 15 C at inlet and 20 C at outlet, delivering a chilled water flow of 26, 500 LPH, corresponding to an effective temperature difference of approximately 23 C. The evaporator comprises two circuits and provides a net cooling capacity of 703 kW. The shell is manufactured from 10 mm thick seamless carbon steel, while the heat transfer surface consists of internally grooved copper tubes arranged in a U-bundle configuration to maximize thermal efficiency. The evaporator is equipped with 6-inch flanged water connections and is designed to operate with 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 water is provided by a centrifugal monoblock pump supplied with the chiller package. The pump is rated for a flow capacity of 120, 000 LPH at a head of 16.3 meters and is driven by an 11 kW electric motor, ensuring steady and reliable chilled water flow through the evaporator and connected process or air-conditioning systems.

The water-cooled condenser, also of shell-and-tube design, is engineered to operate at a saturated discharge temperature (SDT) of +35 C. The condenser is capable of rejecting a total thermal load of 718 kW and features a carbon steel shell with epoxy coating to enhance corrosion resistance and extend equipment life. The condenser heat transfer tubes are made of plain copper tubes assembled in a removable bundle, allowing convenient access for cleaning and maintenance. The condenser is designed for a cooling water flow rate of 140, 000 LPH, with 6-inch flanged inlet and outlet connections, and maintains a water-side pressure drop not exceeding 0.4 bar. The design pressure ratings are 10 bar on the water side and 30 bar on the refrigerant side.

Condenser water circulation is maintained by a centrifugal monoblock pump rated for 140, 000 LPH at a developed head of 15.7 meters. The pump is powered by an 11 kW motor, suitable for operation on a 380415 V, 50 Hz electrical supply, ensuring stable and efficient condenser performance.

The refrigeration system incorporates compact screw compressors designed for continuous duty, heavy-load operation, and long service life. Compressor capacity control is achieved through step or stepless modulation, with unloading stages of 25%, 50%, 75%, and 100%, enabling efficient operation during partial-load conditions. Compressor starting is accomplished using a star-delta starting method, while VFD operation is available as an optional configuration for improved energy efficiency and smoother capacity variation. The compressor package is capable of delivering a maximum cooling capacity of 718 kW, with actual power consumption dependent on operating conditions and site-specific parameters.

FIDEM WATER COOLED SCREW TYPE CHILLER (150 TR)

The proposed equipment consists of a FIDEM manufactured water-cooled screw type chiller, designated by model FM-WCS-150-407C, and designed to provide a nominal refrigeration duty of 150 TR, corresponding to approximately 527 kW of net cooling capacity. The chiller package is configured with two (2) completely independent refrigerant circuits, ensuring improved system reliability, operational redundancy, and uniform load sharing between compressors. The unit is intended for operation on a three-phase, 415 V, 50 Hz AC power supply, with a maximum connected electrical demand of 112.1 kW and a full-load current rating of 204.8 A. The refrigeration cycle utilizes R-407C refrigerant, and precise refrigerant flow management is accomplished by means of an Electronic Expansion Valve (EEV), ensuring stable, responsive, and efficient system performance.

The chiller is fitted with a water-cooled shell and tube type evaporator, designed for an evaporating saturation temperature (SST) of 10 C. The system is suitable for applications requiring a chilled water operating temperature range of 15 C to 20 C. The evaporator assembly comprises two (2) refrigerant circuits and is designed to accommodate 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 fabricated from carbon steel with a minimum wall thickness of 10 mm using seamless construction, providing high mechanical strength and long service life. Heat transfer is achieved through internally grooved copper tubes arranged in a U-bundle configuration, which enhances thermal efficiency. The evaporator is equipped with 6-inch water inlet and outlet connections and is designed for a water-side pressure loss of 0.4 bar. The maximum allowable working pressure on the water side is 10 bar, while the refrigerant side is designed for a pressure rating of 25 bar.

Circulation of chilled water through the evaporator is ensured 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 rejecting a total heat load of 718 kW. The shell is manufactured from carbon steel and protected with an epoxy coating to provide effective corrosion resistance, while the heat transfer surface consists of plain copper tubes arranged in a tube bundle configuration.

The condenser is provided with 6-inch cooling water 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 means of a centrifugal mono-block pump, rated for 110, 000 LPH at a head of 10 meters, driven by a 5.5 kW motor suitable for operation on 380415 V, 50 Hz power supply.

The chiller is equipped 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%, enabling efficient matching of system capacity with varying cooling demand. The compressor is provided with a star-delta starting arrangement, with Variable Frequency Drive (VFD) control available as an optional provision. The compressor electrical power input shall be as per system design and actual operating conditions.

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.