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Piston Parallel Unit
Features :the body use the semi-hermetically refrigeration compressor, the refrigeration control system of high level of automation, which achieve the parallel compressor operation, it is more stable and reliable than the traditional ammonia refrigeration system. Automatic control system of unit is controlled by imported programmable logic controller(PLC), to realize automatic safety protection in case of open phase,over-voltage,under-voltage,over-current,oil pressure,high pressure,low pressure and electric motor overloading.
Refrigeration Capacity Range: high temperature parallel unit, middle temperature parallel and low temperature parallel unit, according to customer's demand to design unit
Application refrigerant: suitable for R22, R404A,R507A and etc.

 

 

Product Features

Go through automatic adjustment of PLC computer controller, provide multi-stage refrigeration capacity output, with the implementation of dynamic load automatic matching, which is the unit always works effectively and saves energy.
Using the high efficient and reliable of low temperature double stage compressor, when the evaporating temperature is -40℃, the average efficiency is higher 30% than single stage low temperature unit, which the efficiency is higher 20% than the low temperature screw unit with economizer.
Accurate pipeline design,pipeline resistance loss is minimized, and the unit efficiency is enhanced.
Using the high efficient oil separator, to reduce the lubricating oil into the system, to improve the efficiency of heat exchanger.

Stable and Reliable:

Refrigeration control system of high level of automation, which achieve the parallel compressor operation, it is more stable and reliable than the traditional ammonia refrigeration system.

The main spare parts and components are famous brand products in domestic and abroad,the system work stable and reliably. 

Automatic control system of unit is controlled by imported programmable logic controller(PLC)or single-chip microcomputer(SCM), and realize automatic safety protection in case of open phase,over-voltage,under-voltage,over-current,oil pressure,high pressure,low pressure and electric motor overloading. With PLC control, the compressor balance operation time automatically, so as to prolong its service life.

The unique design of the gas-liquid separator, the maximum to avoid the generation of liquid hammer.

Remote alarm and monitoring interface can be reserved

Compact Structure

Multiple compressors share the oil separator, gas-liquid separator, condenser, receiver, control system ,and according to user need can be installed in the same frame, which is a small occupied area. It is the traditional ammonia room area 25%.

Provide "modularized"installation, lessen installation period,reduce pipeline consumables and shorten on-site construction period.

Reduce Cost

Realize automatic control of refrigeration system, and reduce daily operation and management cost. 

Reduce investment cost of equipment and machine room area.

Enhance automatic safety performance,reduce the cost of auxiliary safety equipment.

Compared with traditional ammonia system,the unit reduce the maintenance cost

 

 

Technical Parameter

 

Model Fitting Compressor Nominal Woking Condition Motor
Refrigeration Capacity Power
Model Unit kw HP
High Temp.Single-Stage Unit BL3-12G BF12G4-41.3 3 117 12
BL3-15G BF15G4-48.5 3 138 15
BL3-20G BF20G4-56.3 3 162 20
BL3-25G BF25G4-73.6 3 207 25
BL3-30G BF30G4-84.5 3 237 30
BL3-35G BF35G4-101.1 3 282 35
BL3-40G BF40G6-126.8 3 357 40
BL3-50G BF50G6-151.6 3 420 50
BL4-40G BF40G6-126.8 4 476 40
BL4-50G BF50G6-151.6 4 560 50
BL5-50G BF50G6-151.6 5 700 50
BL6-50G BF50G6-151.6 6 840 50
Middle Temp.Single-Stage Unit BL3-12Z BF12Z4-56.3 3 72 12
BL3-15Z BF15Z4-73.6 3 90 15
BL3-20Z BF20Z4-84.5 3 105 20
BL3-25Z BF25Z4-101.1 3 126 25
BL3-30Z BF30Z6-126.8 3 159 30
BL3-40Z BF40Z6-151.6 3 189 40
BL4-30Z BF30Z6-126.8 4 212 30
BL4-40Z BF40Z6-151.6 4 252 40
BL5-40Z BF40Z6-151.6 5 315 40
BL6-40Z BF40Z6-151.6 6 378 40
Low Temp.Double-Stage Unit BL3-12DS BF12DS4-27.0 3 33 12
BL3-16DS BF16DS6-31.8 3 48 16
BL3-20DS BF20DS6-36.8 3 57 20
BL3-25DS BF25DS6-42.3 3 66 25
BL3-30DS BF30DS6-50.5 3 78 30
BL4-25DS BF25DS6-42.3 4 88 25
BL4-30DS BF30DS6-50.5 4 104 30
BL5-30DS BF30DS6-50.5 5 130 30
BL6-30DS BF30DS6-50.5 6 156 30

 

Nominal Woking Condition: Condensing Temp. +40℃

    Evaporating Temp. Middle Temp.Working Condition(Z):-15℃

    High Temp.Working Condition(G):+5℃

     Low Temp.Working Condition (DS):-35℃

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