Gree industrial air conditioner LHE series high-efficiency screw chillers water chiller
Gree LHE series high-efficiency screw water-cooled chiller is a new generation high energy efficiency chiller,,use R134a green refrigerant,energy-efficient,reliable in operation,under nominal working conditions refrigeration capacity range :265-1400kw,Widely be used in various of office building,hospital,school,supermarket etc,also be used to cooling technogical process of products ,ice storage etc.
Features:
1.Adopt flooded evaporator,higher heat exchange efficiency
Refrigerant is evenly distributed in the evaporator. With flooded type evaporator, evaporation temperature is increased and so is the heat exchange efficiency. Together with screw compressor that is specialized for flooded type chiller, unit’s cooling capacity and energy efficiency ratio is greatly improved. COP can reach 6.2.
2.New throttle,more accurate control
Control logic is optimized to calculate the best liquid level automatically and adjust the actual value quickly for satisfactory output. The electronic expansion valve can adjust refrigerant flow and evaporator liquid level accurately and fast to maintain the best partial load efficiency and wide operating range.
3.optimization design,more reliable oil return system
With the patented high-efficiency oil separator and injection type oil return, unit can still achieve reliable oil return even when it is running under poor working condition. Unit is designed with low oil protection to avoid the risk of compressor damage caused by oil shortage.
4.High-efficiency and low noise oil separator,higher oil separate efficiency
This high-efficiency oil separator is patented. It adopts means such as cyclone separation, inertial impaction, natural deposition, and fractionation by absorption. Oil separating efficiency is up to 99.98%.
5.Dual compressor dual circuit design,morereliable operation
Double circuits can lower failure rate to a minimum and improve unit’s reliability. Because there are double compressors, in case that one faulted compressor needs maintenance, the other compressor can still perform normally.
6.Quick capacity adjustment,perfect load match up
Stepless slide valve is adopted to realize quick and accurate capacity adjustment and match it with actual load in real time. Compressor starts up steadily under small current and low load.
7.Green and energy-saving,higher EER
a++++ grade energy saving,COP can reach 6.2
Excellent mechanical characteristics
1.Special designed high-performance screw compressor for flooded chiller, higher compatibility, more efficient and stable in operation
*Patent high-efficiency rotor profile
Fully sealed between rotors,improve compressor efficiency and stability,increase rotor rigidity ,make compressor can adapt worse operation conditions,lower noise
*Revolutionary guiding valve design
Use VI guiding valve,make compressor load and unload more quick ,stable and reliable.
*Economy
Use increase enthalpy by replenish gas,make compressor larger exhaust ,improve unit performance, change inlet position of replenish gas,make compressor have higher energy efficiency.
2.Heat exchanger
*Evaporator
Use Gree independent research and development flooded evaporator, build-in particular refrigerant well-proportioned distribution device and gas liquid separation device,more uniform of refrigerant distribution,greatly improve heat transfer efficiency of evaporator,so improve units energy efficiency.
*Heat exchange tube
Use appropriative super efficient heat exchange tube and enhance heat transfer efficiency between water and refrigerant to improve unit energy efficiency.
Heat exchange tube connect tube plate by mechanical expansion to seal.at the position of expansion connect have 3 sealed grooves,greatly improve reliability of seal.
*Condenser
Preset prevent high-speed and high-pressure gas impact heat exchange tube device at the top of condenser,effectively contain vibration of heat exchange tube.greatly improve running stability of condenser.
Built-in subcooler at the bottom of condenser,improve subcooled temperature,improve refrigeration cycle efficiency of chiller.
*shell
The steel of evaporator shell and condenser shell use conform to China new pressure container standard.,ensure unit safety operation.
3.Water switch
Use famous brand pressure gradient water switch, greatly reduce fault of water switch.
4.perfect Damping
Unit deploy 8 piece of 50mm NBR shock pad,can completely meet unit shock absorption requirements.
5.Thermal insulation material
TOP quality thermal insulation material.the effect of insulation can guarantee unit no moisture condensation in any conditions.
6.excellent anticorrosive performance
Use TOP quality anticorrosive material and complex process, guarantee unit outstanding anticorrosive performance
7.Multiple protection function
Power default phase protection, Anti-phase protection, motor overload protection, motor overheating protection,anti-freeze protection,water flow switch protection,low flow protection,prevent constantly start protection,system high-Voltage protection,system low voltage protection,exhaust high temperature protection,high voltage low voltage difference protection,automatic anti-freeze protection,oil level switch protection,safety valve protection,sensor fault protection.
Other safety measures, such as hypertonus protection,pressure too low unload function,compressor oil heating controller function, minimum running time control function.ect.
Product Performance and Parameters:
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Remote intelligent service center:
Remote intelligent service center 5 function
*Remote data check
*Unit fault early alert
*Maintenance SMS notice
*Fault immediate process
*Running Data record