Precision Temperature Control

R - Closed Loop Chillers


SELF-CONTAINED RECIRCULATING CHILLERS

Recirculate Fluid from an Internal Tank

Closed-Loop coolers recirculate coolant from a tank mounted in the cooler, through a sealed coolant loop and heat load (spindle) and back to the tank. The tank, pump, and evaporator are all in the cooler.

Coolant is added to the tank through a filler/breather port. The coolant level is always visible in the tank level gauge. When the pump is energized, it draws coolant from the tank and pumps it through the coolant loop. The coolant absorbs heat from the heat load and then dissipates it in the evaporator before returning to the tank. The temperature controller senses the temperature of the coolant leaving the tank and controls the refrigeration effect in the evaporator to provide coolant at the desired discharge temperature.

This model is also available in a Non-Refrigerated air or water cooled fluid cooler. Please see "NRCA" and "NRCW" coolers.

Applications:
  • High-Speed Spindles
  • Lasers
  • Power Supplies
  • Diffusion Pumps
  • Jacketed Vessels
  • Chill Rolls
  • Injection Molding
  • Linear Motors
  • Medical Equipment
  • Welding
  • Vacuum Systems
  • Heat Exchangers

OC Models for Water or Water-Based Coolants including de-ionized water (specific options required), water/glycol mixtures, and water-based synthetic coolants. OC models are supplied with a durable stainless steel coolant tank with filler/breather port and coolant level gauge. Evaporators are stainless steel immersion coils (up to 1.5 HP) or stainless steel brazed plates. Piping and fittings are non-ferrous. Standard pumps are bronze, brass, or stainless steel.

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 TANK CAPACITY STANDARD VOLTAGE**
WATER BTU/hr Kcal/hr hp gpm lpm gal. ltr.  
OC-25R 3000 625 1/4 1.6 6 2 7.5 V1, V3
OC-33R 4000 825 1/3 1.6 6 2 7.5 V1, V3
OC-50R 6000 1500 1/2 2.5 9 4 15 V1, V3
OC-75R 9000 2000 3/4 4 15 4 15 V1, V3
OC-100R 12000 3000 1 6 23 10 38 V2, V3
OC-150R 18000 4500 1 1/2 8 30 10 38 V6, V8, V10
OC-200R 24000 6000 2 8 30 14 54 V6, V8, V10
OC-300R 36000 9000 3 12 45 20 75 V6, V8, V10
OC-400R 48000 12000 4 16 60 32 120 V6, V8, V10
OC-500R 60000 15000 5 20 75 32 120 V6, V8, V10
OC-750R 90000 22500 7 1/2 30 112 48 180 V6, V8
OC-1000R 120000 30000 10 40 150 60 225 V6, V8
OC-1500R 180000 45000 15 60 225 100 375 V6, V8
OC-2000R 24000 60000 20 80 300 150 560 V6, V8
OC-2500R 300000 75000 25 100 375 150 560 V6, V8
OC-3000R 360000 90000 30 120 450 200 750 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. All OCO models are supplied with stainless steel immersion or brazed plate evaporators selected specifically for oil based coolants and pumps all designed for years of reliability and dependabilty.

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 TANK CAPACITY STANDARD VOLTAGE**
OIL BTU/hr Kcal/hr hp gpm lpm gal. ltr.  
OCO-25R 3000 625 1/4 1.5 5.6 4.5 17 V1, V3
OCO-33R 4000 825 1/3 1.5 5.6 4.5 17 V1, V3
OCO-50R 6000 1500 1/2 2.5 9.5 4.5 17 V1, V3
OCO-75R 9000 2000 3/4 5 19 4.5 17 V1, V3
OCO-100R 12000 3000 1 8 30 12 45 V2, V3
OCO-150R 18000 4500 1 1/2 8 30 12 45 V6, V8, V10
OCO-200R 24000 6000 2 12 45 16 60 V6, V8, V10
OCO-300R 36000 9000 3 18 68 20 75 V6, V8, V10
OCO-400R 48000 12000 4 24 90 32 120 V6, V8, V10
OCO-500R 60000 15000 5 30 112 32 120 V6, V8, V10
OCO-750R 90000 22500 7 1/2 40 150 48 180 V6, V8
OCO-1000R 120000 30000 10 50 190 60 225 V6, V8
OCO-1500R 180000 45000 15 75 280 100 375 V6, V8
OCO-2000R 24000 60000 20 100 375 150 560 V6, V8
OCO-2500R 300000 75000 25 125 470 150 560 V6, V8
OCO-3000R 360000 90000 30 150 560 200 750 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.

Closed-Loop coolers recirculate coolant from a tank mounted in the cooler, through a sealed coolant loop and heat load (spindle) and back to the tank. The tank, pump, and evaporator are all in the cooler.

Coolant is added to the tank through a filler/breather port. The coolant level is always visible in the tank level gauge. When the pump is energized, it draws coolant from the tank and pumps it through the coolant loop. The coolant absorbs heat from the heat load and then dissipates it in the evaporator before returning to the tank. The temperature controller senses the temperature of the coolant leaving the tank and controls the refrigeration effect in the evaporator to provide coolant at the desired discharge temperature.

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

download options

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.

LL: Low Level Interlock. Indicates coolant level is low.

FSM: Flow Meter/Switch. Adjusts coolant flow to optimum setting.

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.

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

W: Water-Cooled Condenser. For use with city, tower or other water sources. Energy efficient and space saving.

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