Precision Temperature Control

RO - Open Loop Chillers


RECIRCULATE FLUID FROM A REMOTE TANK

Energy Saving, Space Saving and Quiet

Open loop industrial chillers control the temperature of a liquid in a remote open tank or sump by continuously recirculating it. The liquid is drawn from the tank, pumped through the chiller and back to the tank.

Turmoil open loop water chillers can use water for cooling instead of air. The condenser does not cool the hot refrigerant with ambient air, but instead uses water that is cooled by a cooling tower or city water. This  allows a reduction in energy requirements as well as a significant reduction in the size of the chiller because of the small surface area of the water-based condenser and the absence of fans. The absence of fans also allows for significantly reduced noise levels.

Turmoil refrigerated chillers use refrigeration as the media for cooling, while Turmoil non-refrigerated chillers rely on simpler techniques such as air or water flowing over coils containing the coolant to regulate temperature. 

Applications:
  • Coolant Sumps
  • Filtration Tanks
  • Hydraulic Tanks
  • EDM
  • Fish Tanks
  • Process Tanks
  • Quench Tanks
  • Headstocks
  • Gear Boxes

OC Models for Water or Water-Based Coolants including de-ionized water, water/glycol mixtures, and water-based synthetic coolants. Evaporators are brazed, stainless steel plates. Piping and fittings are non-ferrous. Self-priming, bronze, centrifugal pumps are standard. Coolant recirculating through the cooler must be clean, otherwise specify optional In-Line Filter (ILF) or Cleanable Evaporator (CEV).

Model Selection Chart

NOTE: This information is being presented as a guideline only. Your specific application, options and requested features may alter the specifications. Please confirm all specifications with Turmoil.

MODEL RATED COOLING CAPACITY* COMP. STANDARD PUMP CAPACITY STANDARD VOLTAGE**
WATER BTU/hr Kcal/hr hp gpm lpm  
OC-25RO 3000 625 1/4 1.6 6 V1, V3
OC-33RO 4000 825 1/3 1.6 6 V1, V3
OC-50RO 6000 1500 1/2 2.5 9 V1, V3
OC-75RO 9000 2000 3/4 4 15 V1, V3
OC-100RO 12000 3000 1 6 23 V2, V3
OC-150RO 18000 4500 1 1/2 8 30 V6, V8, V10
OC-200RO 24000 6000 2 8 30 V6, V8, V10
OC-300RO 36000 9000 3 12 45 V6, V8, V10
OC-400RO 48000 12000 4 16 60 V6, V8, V10
OC-500RO 60000 15000 5 20 75 V6, V8, V10
OC-750RO 90000 22500 7 1/2 30 112 V6, V8
OC-1000RO 120000 30000 10 40 150 V6, V8
OC-1500RO 180000 45000 15 60 225 V6, V8
OC-2000RO 24000 60000 20 80 300 V6, V8
OC-2500RO 300000 75000 25 100 375 V6, V8
OC-3000RO 360000 90000 30 120 450 V6, V8

*Capacities based on coolng water to 60°F (16°C) in a 90°F (32°C) ambient.

**Refer to chart below.

Please download our catalog or contact us for full specifications.

STANDARD VOLTAGE
V0 100/50/1
V1 115/60/1
V2 200/50/1
V3 208-230/60/1
V4 208-230/60/1, 200/50/1
V5 200-240/50/3
V6 208-230/60/3
V7 380-420/50/3, 460/60/3
V8 460/60/3
V9 575/60/3
V10 200-240/50/3, 208-230/60/3
VC Custom Voltage
Contact our engineers for more information.

OCO Models for Oil or Oil-Based Coolants. Evaporators are brazed, enhanced stainless steel plates. Piping and fittings are copper, bronze, steel, or hose. Self-priming, cast-iron gear pumps are standard. Oil recirculating through the cooler must be clean, otherwise specify optional In-Line Filter (ILF) or Cleanable Heat Exchanger (CHX).

Model Selection Chart

NOTE: This information is being presented as a guideline only. Your specific application, options and requested features may alter the specifications. Please confirm all specifications with Turmoil.

MODEL RATED COOLING CAPACITY* COMP. STANDARD PUMP CAPACITY STANDARD VOLTAGE**
OIL BTU/hr Kcal/hr hp gpm lpm  
OCO-25RO 3000 625 1/4 1.5 5.6 V1, V3
OCO-33RO 4000 825 1/3 1.5 5.6 V1, V3
OCO-50RO 6000 1500 1/2 2.5 9.5 V1, V3
OCO-75RO 9000 2000 3/4 5 19 V1, V3
OCO-100RO 12000 3000 1 8 30 V2, V3
OCO-150RO 18000 45000 1 1/2 8 30 V6, V8, V10
OCO-200RO 24000 6000 2 12 45 V6, V8, V10
OCO-300RO 36000 9000 3 18 68 V6, V8, V10
OCO-400RO 48000 12000 4 24 90 V6, V8, V10
OCO-500RO 60000 15000 5 30 112 V6, V8, V10
OCO-750RO 90000 22500 7 1/2 40 150 V6, V8
OCO-1000RO 120000 30000 10 50 190 V6, V8
OCO-1500RO 180000 45000 15 75 280 V6, V8
OCO-2000RO 24000 60000 20 100 375 V6, V8
OCO-2500RO 300000 75000 25 125 470 V6, V8
OCO-3000RO 360000 90000 30 150 560 V6, V8

*Capacities based on coolng oil to 80°F (28°C) in a 90°F (32°C) ambient.

**Refer to chart below.

Please download our catalog or contact us for full specifications.

STANDARD VOLTAGE
V0 100/50/1
V1 115/60/1
V2 200/50/1
V3 208-230/60/1
V4 208-230/60/1, 200/50/1
V5 200-240/50/3
V6 208-230/60/3
V7 380-420/50/3, 460/60/3
V8 460/60/3
V9 575/60/3
V10 200-240/50/3, 208-230/60/3
VC Custom Voltage
Contact our engineers for more information.
Closed Loop Chiller Flow Schematic
Click image for larger view.

Open-Loop coolers recirculate fluid from a remote tank, through the cooler and back to the tank. The cooler works to maintain a constant fluid temperature in the tank. The pump and evaporator are in the cooler. The tank is remote.

When the pump is energized it draws fluid from the remote tank and pumps it through the evaporator in the cooler and back to the tank. The temperature controller senses the temperature of the fluid entering the cooler and controls the refrigeration effect in the evaporator to provide the desired fluid temperature in the tank. The cooler should be installed as near as possible to the tank.


These are a few of our basic options. Click the button below to see all chiller options.

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Download Full Options Catalog

CTC: Digital Temperature Controller: Provides close temperature control (±0.5°F). Displays bot set-point and coolant temperature.

ATC: Ambient Tracking Controller. A dual input digital tempertue controller allows the coolant temperature to track ambient temperature at a constant, adjustable differential. Displays both ambient and coolant temperature.

OP: Optional Pumps. A variety of pumps are available to meet almost any flow and pressure requirement for both water and oil-based coolants.

LF: Low Flow Interlock. Prevents damage to machine on loss of flow.

HT: Temperature Fault Interlock. Indicates coolant temperature is out of range.

ILH: In-Line Heater. Warms up coolant to optimum operating termperature.

ILF: In-Line Filter Insures clean coolant.

PS: Pure System. Coolant only comes in contact with stainless steel or plastic.

Non-Copper. Oil only comes in contact with iron or stainless steel.

NRCW and NRCA: Non-Refrigerated Cooler. Uses central chilled water or ambient air instead of refrigeration. Saves space and maintenance.

W: Water-Cooled Condenser For use with tower or city water. Removes heat from the work area while saving space and maintenance.

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TURMOIL COOLER FEATURES

Heavy-Duty Construction. Coolers are designed for continuous industrial duty and dependable long life. Welded steel cabinet features lifting eyebolts and mounting skid. Panels are easily removable for complete access.

High-Ambient Condensers. Oversized to run cool in hot, dirty environments. All condensers are protected with a cleanable aluminum air intake filter.

Ozone-Friendly Refrigerants. Turmoil coolers use only approved, non-ozone-depleting refrigerants.

Complete Temperature Control. Choice of analog or digital controllers available with options to hold coolant within ±0.5ºF (±0.25ºC) of set-point. Hot gas bypass unloading eliminates compressor short cycling.

Super-Efficient Evaporators. For both oil- or water-based fluids. Brazed plate, immersion coil, or shell-and-tube design of stainless steel, copper, or steel construction depending on application. Tested for 350 PSI working pressure.

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