Cooling capacity:90 kW
Heating capacity:100 kW
Compressor type:5-6 asymmetric semi enclosed twin screw compressor
Power input:29.3 kW
Non-standard product and design:Acceptable
Screw air-cooled chiller(or heat pump)
Screw air-cooled chiller(heater) is the unit of which applicable
cooling(heating) medium is air or water in summer(winter), and its
secondary refrigerant is water. When connected with fan coil units,
air conditioning box, air processor together, it can be used as
half of concentration and centralized the central air conditioning
system; Single cold- screw air-cooled chillers are widely used in
various fields of refrigeration industry.
1.Comparing with water chiller
Compared with water chiller, Screw air-cooled chiller can get rid
of huge cooling water system and a special air conditioning room.
It also can be set up on the roof and outside. Installation and
maintenance are very simple and convenient.
2.Precise stable water temperature
3.Achieve annual refrigerate operation
4.Y-Star triangle depressurization start mode
Screw air-ccoled(or heat pump)chillers use Y-Star triangle
depressurization start mode. The starting electric current is only
about 1.5 to 2 times as run-time current which greatly reducing the
impact to the grid
5.External air cooled oil cooling device
6.Perfect protection function
7.Well separated frozen oil and refrigerants
In order to more fully separate the frozen oil and refrigerants,
external centrifugal efficient oil separator of low temperature
cold water chiller can greatly reduce stranded frozen oil in the
evaporator due to the low temperature. This ensure the compressor
lubrication system security and also improve the heat transfer
effectiveness of the evaporator.
8.External liquid spray technology
To further ensure compressor motor will not be overheated. Screw
air-cooled(or heatpump)chiller apply external liquid spray
technology. With low temperature cooling media directly on the
motor, it ensures the long-term and stable operation of the
9.Automatic capacity adjustment
According to the air conditioning' demand, screw air-cooled chiller
can automatically adjust load capacity. The standard chiller
capacity adjustment is implemented by segmented or non-polar
uninstalling method. One single machine can realize four different
compressor capacity level, which are 100%, 75%, 50% and 25%. 25%
level is used to start compressors.
In order to better protect the atmosphere, it can produce green
environmental protection cooling medium refrigeration and air
conditioning equipment not only in adopts HFC407C and HFC134a,but
also in HCFC22.
11.Balanced running performance
Many of the chiller with compression, microcomputer automatic
memory will be per compressor operation time, start the next time
it will be activated running less time compressor. Similar in the
discharge of the need, but also will be preferential the operation
longer time to uninstall chiller, in order to achieve the balance
of each compressor operation, extend the service life of the
Each chiller is occupied with remote control function. The computer
controller is equipped with RS485 standard communication
interfaces, open communication protocol. This will allow all kinds
of building monitoring system connected and remote monitoring. The
system supports building automation BACne agreement, TPC/IP,
convenient connection with the system; The remote control unit can
be directly connected through RS232 and RS485, RS422 universal
serial interface and through the BACnet converter pulled into a BMS
intelligent building control system.
Accurate design aluminum pieces from the maximum is to reduce
frosting probability. Analysis and judgment can be achieved by
fully combining of time, temperature and pressure for the
comprehensive. This achieves the on-demand defrosting, reach
perfect level of defrosting, and extend the defrosting interval.
14.Waste heat & secondary condensation
Without additional consumption of electricity and fuel , the waste
heat generated from the chillers can produce domestic hot water.
These results can be achieved in almost zero cost, zero pollution,
no more other additional devices. The only thing to do is just to
directly access water pipeline to access hot water
Due to the secondary condensing progress, it can appreciably reduce
condensate temperature and pressure, and it can also raise the
efficiency of refrigeration to some extent.
15.Heat recovery type chiller
Due to the increasingly energy shortage, waste heat recycling will
have a long-term economic value. Basing on this fact, our
enterprise developed a heat recycling chiller system, which can
fully recycle the condensing waste heat originally released into
the environment, which can be used in hotels , dormitories ,
toiletries and other occasions; If heat recycling technical
parameters are needed, please contact our technical department to
16.Compressor & other major refrigeration components
Twin-screw compressor applies the world's most advanced 4th
generation asymmetric patent tooth rotor machining by the British
HOLROYD rotor and then grinding precision by the German
KLINGELNBERG precision rotor grinding machine. This greatly reduces
leakage and cooling loss. The usage of advanced three-stage oil
network makes the oil filter ratio up to 99.7%, which greatly
ensure machine oil return to the compressor , the wide range of
built-in protection can ensure the compressor safe operation
including small vibration , low noise and high efficiency.
Except compressor refrigeration, other major components are
imported quality products, such as the expansion valve , solenoid
valve , filter drier , etc, which are all European and American
quality products , have reliable performance and precise control .
17.Touch screen computer interface
The chiller is controlled by micro-computerized controller, and all
are equipped with Germany Siemens PLC imported controller. The
accuracy and intelligentize truly achieve perfect control of whole
machine in order to ensure safe operation of the unit and the
purpose of effective energy conservation. The machine is equipped
with touch-screen interface,which is simple and customer-friendly.
The enterprise has a well-operated testing center , each
air-conditioning unit have been injected refrigerant and
refrigerant oil before leaving factory. After undergoing a rigorous
simulation of the standard conditions and maximum operating mode
detection, expansion valve can be adjusted to the best condition.