Category Archives: What’s New

DUAL In-Line Peltier Chiller

Posted on by

Our DUAL In-Line, Air-to-Liquid Chiller (Model # AL15080DI) provides 143 watts of liquid cooling at an ambient temperature of 25oC  (re-circulating water temperature 25oC).  This design is very compact with a footprint of just 150mm x 82mm (6” x 3.2”) and height of 248mm (9.8”).  This chiller is especially suited for internal placement in equipment, such as analytical instrumentation or medical lasers, but can be effective for any application requiring chilling, heating or precise temperature control of a fluid.  Other suggested applications might include medical therapy, industrial processing equipment, aquarium temperature control, electronics and optical cooling.

Instead of Freon-based compressors, our chiller uses compact solid-state Peltier (thermoelectric) technology at the core to actively and precisely pump heat.  The design is rugged and corrosion resistant with carefully designed components to provide a long operating life.  Power for the chiller is safe, low voltage DC which can be either applied fixed or varied to accurately maintain a temperature set point.  Standard operating voltage for this design is 24 VDC (or 0-24 VDC), but the circuit wiring is flexible so the chiller can alternatively be wired to operate at fixed levels of 12 or 48 VDC.

The liquid plate in this chiller is a custom, multi-channel design with internal passage dimensions chosen to provide good thermal performance without undue flow restriction.  Consequently, the liquid plate can operate effectively at moderate flow rates (1-4 lpm) allowing a range of pump types to employed.  Standard fittings for the liquid plate include 8mm (5/16”) push to connect SS fittings or 3/8” barb fittings.  One end of the liquid plate is machined with 1/8″ NPT holes to accept a range of fitting types.

High fin density heat sinks, positioned on either side of the liquid plate, are single piece, anodized aluminum extrusions similar in fin density and performance to bonded-fin types.  Elimination of the adhesive bonded fin joints, however, offers enhanced performance and reliability advantages.  The DC axial fans are the only moving parts in this design and are high reliability, ball bearing type from a reputable manufacturer.  The heat sink/fan combination is an especially important consideration for Peltier chillers since it strongly influences the maximum cooling capacity and overall efficiency achievable.  The resultant thermal resistance of this compact heat sink, fan and shroud combination is an attractive 0.08 C/W.

Pricing (quantity 1-10) for the DUAL In-Line chiller is $379.  Significant discounts are available for higher quantities.  Please contact us to discuss your specific chiller needs.

 

 

About Allied Thermal

Posted on by

Allied Thermal Designs is a small, versatile and technology driven company focused on delivering compact thermoelectric-based product designs for thermal management.   As a technology driven company, we strive to develop and provide higher performing product designs and at more competitive pricing levels.  Our approach is multifaceted; we manufacture standard products (which are shown on this website), but we also work with customers to deliver customized solutions that best satisfy their thermal management needs.

Most of our designs are very compact, which is accomplished through the use of high performing components.  We control costs by actively managing the design and manufacture of these components.  Most of our products employ thermoelectric (Peltier) technology to actively control the heat transfer within our assemblies.  Our products are typically used to cool, heat or control the temperature of air, liquids or solid surfaces.   Delivering products that perform well and meet customer needs precisely through careful engineering, is our primary business objective.

More

  • We are an engineering company by nature with extensive experience in a range of industries.  This enables us a broad and diverse perspective in developing product solutions for customers.
  • We design and produce a number of our key components, which allows some manufacturing flexibility and control over costs and quality.
  • A prime business objective of ours is to develop well designed products with exceptional performance but that are also reasonably priced.
  • We strive to maintain good communications, speed the product development process and generate results that meet customer’s expectations.
  • Our main business operations and offices are in the northeast U.S. and in Israel.

New Compact LP Design

Posted on by

LP Image 6Our 150mm x 80mm liquid plate (P/N ELP15080) is a custom design with high internal surface area and good fluid flow properties.  It has more than double the wetted surface area of a typical 4-pass, embedded copper tube plate.  The liquid plate is a thick-walled extruded design, milled smooth and flat on both contact surfaces for low resistance interfacing and good heat spreading.  It will easily accommodate multiple 40mm or 50mm TEC’s (or other heat generating sources) on both sides.

This liquid plate LP has attractive fluid flow properties yielding a thermal resistance of 0.016 C/W at 2 LPM.  The good performance at low flows eases the pump requirement which generally translates to lower cost, a more compact design and less added heat by the pump in to the process stream (and therefore more net cooling power).  The good flow response further eases pump selection allowing more compact and economical pumps to be used.  The recommended flow range for the plate is 1-4 LPM (0.25-1.0 GPM) (rated pressure drop of 3.2 m wc (0.32 bar) at 4.1 LPM).

The liquid plate is also serviceable, the end plates can be removed allowing  inspection and periodic internal cleaning to remove any performance degrading build up, e.g., oxides, deposited solids etc.  Cooling capacity can be readily expanded by linking multiple liquid plates in either series or parallel.  We offer the fluid connectors for coupling multiple liquid plates as well as the mounts for securing multiple plates.