5 ofertas

Año de construcción: usado
Ubicación: Land-ammonia liquid chiller gea grasso vp 1300

capacity control
all screw compressors used in the package series are
fitted with a continuous capacity control with a range
of 10 - 100%.
the capacity is adjusted by shortening the compressor
stroke. the defining factor for the compression
process is the effective rotor length; this is altered by
a hydraulically operated control slide (mounted below
the rotors).
as a standard, each grasso liquid chiller fx pp, lp, vp comprises a low-voltage switchgear installation (ip54) with
integral freely programmable logic controller (plc) gsc. the software functions and the assignment of
inputs/outputs of the gsc control are described separately.
the standard scope of delivery for the low-voltage switchgear installation for liquid
chillers fx comprises:
• main switch (load break cut-out)
• star/delta combination for drive motor
• motor fuse
• motor current transformer
• motor winding protector
• plc hardware
• oil pump contactor
• control transformer with double control fuse on primary and
secondary side
• 24 v dc current supply
• emergency off button
• signal lamp - compressor running
• signal lamp — fault
• signal lamp - warning  AMMONIA LIQUID CHILLER GEA GRASSO VP 1300 CAPACITY CONTROL ALL SCREW COMPRESSORS USED IN THE PACKAGE SERIES ARE FITTED WITH A CONTINUOUS CAPACITY CONTROL WITH A RANGE OF 10 - 100%. THE CAPACITY IS ADJUSTED BY SHORTENING THE COMPRESSOR STROKE. THE DEFINING FACTOR FOR THE COMPRESSION PROCESS IS THE EFFECTIVE ROTOR LENGTH; THIS IS ALTERED BY A HYDRAULICALLY OPERATED CONTROL SLIDE (MOUNTED BELOW THE ROTORS). AS A STANDARD, EACH GRASSO LIQUID CHILLER FX PP, LP, VP COMPRISES A LOW-VOLTAGE SWITCHGEAR INSTALLATION (IP54) WITH INTEGRAL FREELY PROGRAMMABLE LOGIC CONTROLLER (PLC) GSC. THE SOFTWARE FUNCTIONS AND THE ASSIGNMENT OF INPUTS/OUTPUTS OF THE GSC CONTROL ARE DESCRIBED SEPARATELY. THE STANDARD SCOPE OF DELIVERY FOR THE LOW-VOLTAGE SWITCHGEAR INSTALLATION FOR LIQUID CHILLERS FX COMPRISES: • MAIN SWITCH (LOAD BREAK CUT-OUT) • STAR/DELTA COMBINATION FOR DRIVE MOTOR • MOTOR FUSE • MOTOR CURRENT TRANSFORMER • MOTOR WINDING PROTECTOR • PLC HARDWARE • OIL PUMP CONTACTOR • CONTROL TRANSFORMER WITH DOUBLE CONTROL FUSE ON PRIMARY AND SECONDARY SIDE • 24 V DC CURRENT SUPPLY • EMERGENCY OFF BUTTON • SIGNAL LAMP - COMPRESSOR RUNNING • SIGNAL LAMP — FAULT • SIGNAL LAMP - WARNING
Vendedor: JADE Trading OY
Año de construcción: usado
Ubicación: Land-cooling compressor gea, consisting of: siemens compact elektromotor, compressor gea, oelabscheider, switch, mounting frame, permissible pressure: 28 bar, max. speed: 3600, working medium: refrigerant COOLING COMPRESSOR GEA, CONSISTING OF: SIEMENS COMPACT ELEKTROMOTOR, COMPRESSOR GEA, OELABSCHEIDER, SWITCH, MOUNTING FRAME, PERMISSIBLE PRESSURE: 28 BAR, MAX. SPEED: 3600, WORKING MEDIUM: REFRIGERANT
Vendedor: Troostwijk Auctions
Año de construcción: usado
Ubicación: Land-liquid chiller gea grasso fx 2800 / s - 2 x 2800 kw

two gea grasso fx pv 2800 s - screw type liquid chiller compressors were installed in 2003 (made in 2002) and they still installed and in very good working condition. the compressors have flooded evaporation, plate type evaporator and evaporative condenser cooler. type they have been operated only 15 000 hours, their cooling capacity is 2800 kw/unit. refrigerant is r717 (nh3)

the delivery includes complete system with compressor package, evaporators, pumps, intermediate nh3 tanks, evaporative condenser and control cabinets.

the screw compressor sucks nh3 gas out of the liquid separator and compresses it up to condensation pressure. the refrigerant turns to liquid as it is cooled in the condenser. the liquid nh3 is injected back to the liquid separator via a high pressure float valve as expansion device. inside the liquid separator liquid form and gas for are separated. the liquid nh3 passes in a gravity driven circuit to the evaporator. during the evaporation into gaseous form (with heat energy delivered by the secondary refrigerant) it evaporates and a mixture of gas and liquid is coming back to the liquid separator. oil is injected into the working chamber of the screw compressor during operation and it is then separated again from the refrigerant in the discharge side oil separator. the oil which has heated up in the compressor is cooled in an oil cooler to reach the entry temperature and passes a fine filter.

this liquid chillers is equipped with a freely programmable standard logic controller plc simatic c7-633. all operating and fault signals as well as the process variables can be read from a lcd display with background lighting. the display is operated via a robust foil keyboard having 6 functions and 24 system keys.

technical data:

manufacturer: gea grasso gmbh
manufacturing year: 2002
number of units: 2 complete units
type: grasso fx vp 2008 / s
cooling capacity: 2800 kw / unit
electric motor: schorch 560 kw / 2988 rpm / 50 hz
refrigerant: r 717 (ammonia)
evaporator: alfa-laval m20-mwfrc
evaporative condenser: bac xx
compressor package ew: 13250 kg  LIQUID CHILLER GEA GRASSO FX 2800 / S - 2 X 2800 KW TWO GEA GRASSO FX PV 2800 S - SCREW TYPE LIQUID CHILLER COMPRESSORS WERE INSTALLED IN 2003 (MADE IN 2002) AND THEY STILL INSTALLED AND IN VERY GOOD WORKING CONDITION. THE COMPRESSORS HAVE FLOODED EVAPORATION, PLATE TYPE EVAPORATOR AND EVAPORATIVE CONDENSER COOLER. TYPE THEY HAVE BEEN OPERATED ONLY 15 000 HOURS, THEIR COOLING CAPACITY IS 2800 KW/UNIT. REFRIGERANT IS R717 (NH3) THE DELIVERY INCLUDES COMPLETE SYSTEM WITH COMPRESSOR PACKAGE, EVAPORATORS, PUMPS, INTERMEDIATE NH3 TANKS, EVAPORATIVE CONDENSER AND CONTROL CABINETS. THE SCREW COMPRESSOR SUCKS NH3 GAS OUT OF THE LIQUID SEPARATOR AND COMPRESSES IT UP TO CONDENSATION PRESSURE. THE REFRIGERANT TURNS TO LIQUID AS IT IS COOLED IN THE CONDENSER. THE LIQUID NH3 IS INJECTED BACK TO THE LIQUID SEPARATOR VIA A HIGH PRESSURE FLOAT VALVE AS EXPANSION DEVICE. INSIDE THE LIQUID SEPARATOR LIQUID FORM AND GAS FOR ARE SEPARATED. THE LIQUID NH3 PASSES IN A GRAVITY DRIVEN CIRCUIT TO THE EVAPORATOR. DURING THE EVAPORATION INTO GASEOUS FORM (WITH HEAT ENERGY DELIVERED BY THE SECONDARY REFRIGERANT) IT EVAPORATES AND A MIXTURE OF GAS AND LIQUID IS COMING BACK TO THE LIQUID SEPARATOR. OIL IS INJECTED INTO THE WORKING CHAMBER OF THE SCREW COMPRESSOR DURING OPERATION AND IT IS THEN SEPARATED AGAIN FROM THE REFRIGERANT IN THE DISCHARGE SIDE OIL SEPARATOR. THE OIL WHICH HAS HEATED UP IN THE COMPRESSOR IS COOLED IN AN OIL COOLER TO REACH THE ENTRY TEMPERATURE AND PASSES A FINE FILTER. THIS LIQUID CHILLERS IS EQUIPPED WITH A FREELY PROGRAMMABLE STANDARD LOGIC CONTROLLER PLC SIMATIC C7-633. ALL OPERATING AND FAULT SIGNALS AS WELL AS THE PROCESS VARIABLES CAN BE READ FROM A LCD DISPLAY WITH BACKGROUND LIGHTING. THE DISPLAY IS OPERATED VIA A ROBUST FOIL KEYBOARD HAVING 6 FUNCTIONS AND 24 SYSTEM KEYS. TECHNICAL DATA: MANUFACTURER: GEA GRASSO GMBH MANUFACTURING YEAR: 2002 NUMBER OF UNITS: 2 COMPLETE UNITS TYPE: GRASSO FX VP 2008 / S COOLING CAPACITY: 2800 KW / UNIT ELECTRIC MOTOR: SCHORCH 560 KW / 2988 RPM / 50 HZ REFRIGERANT: R 717 (AMMONIA) EVAPORATOR: ALFA-LAVAL M20-MWFRC EVAPORATIVE CONDENSER: BAC XX COMPRESSOR PACKAGE EW: 13250 KG
Vendedor: JADE Trading OY
Año de construcción: usado
Ubicación: Land-cooling compressor plant, volume flow 372 qm/ h, permissible operating pressure 27 bar COOLING COMPRESSOR PLANT, VOLUME FLOW 372 QM/ H, PERMISSIBLE OPERATING PRESSURE 27 BAR
Vendedor: Troostwijk Auctions
Año de construcción: usado
Ubicación: Land-brand new freezing unit, gea grasso, including:
1 cascade system co2/ammonia 2 x 160 with 2 piston compressors, models65hp ( 90kw each), and one screw compressor ( 160kw), gea grasso
1 cooling tower teva
1 evaporative condenser teva
all the equipment is from 2008, but it has never been installed. it was bought by a chemical factory for their new cooling rooms, but these cooling rooms were never built.
advantages of the cascade system:
lower operating costs
lower capital costs
ammonia charge reduction
reduced compliance costs
constant positive pressure
quality and throughput improvements
  BRAND NEW FREEZING UNIT, GEA GRASSO, INCLUDING: 1 CASCADE SYSTEM CO2/AMMONIA 2 X 160 WITH 2 PISTON COMPRESSORS, MODELS65HP ( 90KW EACH), AND ONE SCREW COMPRESSOR ( 160KW), GEA GRASSO 1 COOLING TOWER TEVA 1 EVAPORATIVE CONDENSER TEVA ALL THE EQUIPMENT IS FROM 2008, BUT IT HAS NEVER BEEN INSTALLED. IT WAS BOUGHT BY A CHEMICAL FACTORY FOR THEIR NEW COOLING ROOMS, BUT THESE COOLING ROOMS WERE NEVER BUILT. ADVANTAGES OF THE CASCADE SYSTEM: LOWER OPERATING COSTS LOWER CAPITAL COSTS AMMONIA CHARGE REDUCTION REDUCED COMPLIANCE COSTS CONSTANT POSITIVE PRESSURE QUALITY AND THROUGHPUT IMPROVEMENTS
Vendedor: INTER-MAQUINAS AGUILAR S.L
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