Our family of compact standard liquid-to-liquid (L-L) chillers provide strong cooling responses by combining the low thermal and flow resistance characteristics of liquid based heat sinks with high performing thermoelectric modules. These assemblies are capable of cooling, heating or bi-directional temperature control of recirculating fluids. Precise fluid temperatures can be maintained with the addition of a feedback temperature controller. Dimensionally, our liquid-liquid chillers are very compact with a footprint of only 150mm x 80mm (6” x 3.1”). Other configurations with multiple liquid plates and TEC circuits, are available for increased cooling capacity. Our liquid-liquid chiller designs provide near highest cooling densities compared to similar products on the market.
Our liquid-to-liquid chillers use solid-state, thermoelectric cooling technology to remove (or add) heat from a circulating fluid. Our single chiller design is comprised of a pair of custom, high performing 150mmx80mm liquid plates with a properly matched thermoelectric circuit to optimize performance. One side of the chiller subassembly handles expelled heat (often times plumbed to a radiator/fan combination), while the other plate extracts heat from the internal, re-circulating fluid. The low thermal resistance of these liquid plates (as compared to air cooling systems) promotes an especially strong and efficient cooling response within a very compact package. These solid-state L-L chillers can be operated to simply bulk cool a fluid (e.g., operating at a fixed voltage) or to precisely maintain fluid temperatures within +/- 0.1 oC with a closed-loop temperature controller. Design Details – The 150x80mm liquid plate used in our standard L-L exchangers was custom designed to provide a good balance between high internally wetted surface area and unrestricted fluid flow to help ease pump requirements. Our standard chiller designs are modular, the individual L-L unit is compact (150mm x 80mm x 55mm(H)). Multiple units are securely stacked and plumbed in series or parallel to expand cooling capacity and meet customer specific flow requirements. The standard fluid connections on the liquid plate are 8mm (5/16″) push-to-connect fittings (threaded to 1/8″ NPT passages on the liquid plate ends). Waste heat from the chiller is typically expelled to the environment using a separate, remote radiator/fan assembly, but other approaches are possible. The recommended operating flow range for an individual liquid plate is 1-4 LPM (0.25-1.0 GPM), a flow rate of 2 LPM yields a thermal resistance of 0.016 C/W. Our liquid plate design provides good performance at low to moderate fluid flow rates (tubed plates typically require higher flows for equivalent performance). The good performance at low flows eases the pump requirement which generally translates to lower system cost, a more compact design and less added heat by the pump in to the process stream (i.e., therefore less parasitic losses and more net cooling power). (See the performance curves in the liquid plate section of this website Link to LP Section >>). We offer three standard L-L chiller product designs, as listed below (customization is also possible, please contact us with your specific needs). We can provide all the necessary components to fully operate this chiller, including pumps, radiator and fan and others. All of our standard L-L chiller assemblies are constructed with quality components to provide high performance with long, trouble-free service. Options – Chiller options include various fittings for ease of connectivity to your specific equipment as well as alternative thermoelectric circuits to meet specific electrical needs. We also offer several compatible pump models for use with these liquid plates. Other customer specific options are available upon request. FEATURE OVERVIEW: TYPICAL APPLICATIONS:
COMMON FEATURES FOR ALL SUBASSEMBLIES CONNECTIONS: Sheathed Cable for Power In, Push to Connect Fitting, 8mm (5/16″)– 1/8 NPT (male) COMPONENTS: Extruded Aluminum Liquid Plates, High Reliability Thermoelectric Modules, Stainless Steel Fasteners RELIABILITY: TEC’s: >100,000 hours MTBF SINGLE LIQUID-TO-LIQUID CHILLER PRICING $243 (Qty1-10) DC INPUT NOMINAL PERFORMANCE ASSEMBLY DIMENSIONS DUAL LIQUID-TO-LIQUID CHILLER PRICING $408 (Qty1-10) DC INPUT NOMINAL PERFORMANCE ASSEMBLY DIMENSIONS QUAD LIQUID-TO-LIQUID CHILLER PRICING $721 (Qty1-10) DC INPUT NOMINAL PERFORMANCE ASSEMBLY DIMENSIONS
ASSEMBLY DRAWINGS
Liquid-Liquid Chiller P/N LL15080 Description: Single liquid-liquid chiller utilizing two TECs wired in parallel (1SX2P). Recommended operating voltage is 12 volts. Qc = cooling capacity in cold side liquid plate. Ta = ambient temperature. Tc = cold side fluid temperature (in liquid plate). Th = hot side fluid temperature. COP = coefficient of performance (= Qc/Pin). Links to other performance curves for this subassembly (P/N LL15080): COP v. Voltage Curve (click to link) >> Qh v. Voltage Curve (click to link) >> Current v. Voltage Curve (click to link) >> Please note: Cooling performance curves reflect net cooling capabilities of the chillers, exclusive of performance losses from heat gains through piping, connector or reservoir walls as well from pumps. We recommend that all chiller systems be designed carefully and well insulated on all piping, connectors, etc. Efficient pumps, well sized for the system, should also be employed to further reduce heat gain. Dual Liquid-Liquid Chiller P/N LL15080D Description: Dual liquid-liquid chiller, each chiller unit incorporates two TECs wired in parallel (1SX2P) or four total for the assembly. Recommended operating voltage is 24 volts. Qc = cooling capacity in cold side liquid plate. Ta = ambient temperature. Tc = cold side fluid temperature (in liquid plate). Th = hot side fluid temperature. COP = coefficient of performance (= Qc/Pin). Links to other performance curves for this subassembly (P/N LL15080D): COP v. Voltage Curve (click to link) >> Qh v. Voltage Curve (click to link) >> Current v. Voltage Curve (click to link) >> Quad Liquid-Liquid Chiller P/N LL150160Q Description: Quad liquid-liquid chiller, each unit incorporates two TECs wired in parallel (1SX2P) or eight total for the assembly. Recommended operating voltage is 48 volts. Qc = cooling capacity in cold side liquid plate. Ta = ambient temperature. Tc = cold side fluid temperature (in liquid plate). Th = hot side fluid temperature. COP = coefficient of performance (= Qc/Pin). Links to other performance curves for this subassembly (P/N LL150160Q): COP v. Voltage Curve (click to link) >> Qh v. Voltage Curve (click to link) >> Current v. Voltage Curve (click to link) >>
Description
Specs.
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P/N LL15080
Vin = 12 Volts (TEC Circuit), Iin = 11-12 amps
Max. Cooling Qc = 91 watts
(T water-hot=25°C, DT=0C, 4 LPM)
Recommended Flow Rate Range = 1-4 LPM
150mm (L) x 80mm (W) x 52mm (H)
Weight: 1.1 Kg (2.5 lbs.)_______________________________________________________________
P/N LL15080D
Vin = 24 Volts (TEC Circuit), Iin = 11-12 amps
Max. Cooling Qc = 182 watts
(T water-hot=25°C, DT=0C, 8 LPM)
Recommended Flow Rate Range = 1-4 LPM
150mm (L) x 80mm (W) x 104mm (H)
Weight: 2.4 Kg (5.3 lbs.)_______________________________________________________________
P/N LL150160Q
Vin = 48 Volts (TEC Circuit), Iin = 11-12 amps
Max. Cooling Qc = 364 watts
(T water-hot=25°C, DT=0C, 16 LPM)
Recommended Flow Rate Range = 1-4 LPM
150mm (L) x 160mm (W) x 104mm (H)
Weight: 4.9Kg (10.8 lbs.)_______________________________________________________________
Drawings
P/N LL15080 Single Liquid-Liquid Chiller
P/N LL15080D Dual Liquid-Liquid Chiller
P/N LL150160Q Quad Liquid-Liquid Chiller
Performance
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