Heat Transfer Research & Development, Ltd.

     Thermoelectric Technologies and Waste Recovery for Power Specialists

" Call Us To Order

1-847-577-5967 "



Thermoelectric Assemblies & Parts........ 




Solutions to various cooling problems inmany industries where high thermal density of heat flux is required for coolingare offered.  This was made possible through continuous research & development and  proven demonstrations in applications of  different types of cooling systems over long periods of time by many laboratories and industrial tests in the USA and overseas.

Features of our heat sinks and cold plates are:

    Industry’s lowest internal thermal resistance,

    Industry’s highest Critical Heat Fluxes (CHF),

    Industry’s highest efficiency   

    Low acoustic noise working environment,  

The above features make our heat sinks ideal for thermal management in Computer, Laser, Radar, and Data Center Systems.

Some representative examples of Cold Plate and Heat Sink are shown in Figure:




The above statements are intended to accept any requests from customers who are interested in working with us in their R & D efforts.

Customers who are interested in our assistance, please fill as much information as possible in response to the questionnaires below and send them to:


Heat Transfer Research & Development, Ltd. (HTRD)

1010 W. Lonnquist Blvd.

Mt. Prospect, Illinois 60056 USA


Voice: 1-847-577-5967

Fax:  1-847-577-4229

Website: www.htrdltd.com






    Technical Requirements:

      1. Dissipated Energy  

        1.1 Maximum during normal operation, Watts  -  

        1.2 Uniformity of the thermal load throughout cold plate’s surface area -  Yes/No

          1.2.1 If “No” – please attach detailed map of thermal load distribution.

        1.3 Turbo Regime – Yes/No

          1.3.1 If “Yes” –  

   Maximum dissipated power during turbo regime, Watts -

   Allowable duration of turbo regime, minutes -

      2. Geometrical parameters

        2.1. Required design and exact dimensions of heat dissipating surface area with sketch or drawing attached.

        2.2. Defined overall dimensions of the Keep Out Volume (KOV), L x W x H mm -  

        2.3. Target of decreasing KOV – flexible and fixed parameters

      3. Materials

        3.1 Cold Plate -  

        3.2 Liquid in the Liquid Loop

        3.3 Presence in the liquid loop materials other than material of the cold plate itself –Yes/No

          3.3.1 If “Yes” please specify these materials.

      4. Required and allowable temperatures

        4.1 During acceptance testing we guarantee only the following


          4.1.1 Tcase – temperature on the solid surface of our device


          4.1.2 Tj – junction temperature (temperature inside of the heat

          dissipating object). In this case sketch specifying material,

          footprint and thickness of each and every layer of the heat

          dissipating object should be attached.

        4.2  Desired maximum Tj, °C -  OR  Tcase, °C

      5.  Characteristics of Liquid Loop Pump:

        5.1 Manufacturer and model number


        5.2 Following data set:

          5.2.1 Maximum Flow rate, gallon per minute  or liter per minute -  

          5.2.2 Minimal Inlet Gauge Pressure, kPa or psi -  

          5.2.3 Maximum Discharge Gauge Pressure, kPa  or psi–

          5.2.4 Please attach Performance curve.

      6. Cold plate hydraulic requirements:

        6.1 Flow rate, gallon per minute or liter per minute -

        6.2 Desirable pressure drop, kPa  or psi– 6.3 Maximum allowable pressure drop, kPa  or psi-

        6.4 Direction and geometrical locations of Inlet and Outlet Ports

        6.5 Inlet Gauge Pressure, kPa or psi-

        6.6 Inlet Port geometrical characteristics

        6.7 Outlet Port geometrical characteristics

      7. Hoses:  

        7.1 Length

        7.2 Manufacturer and model number


        7.3 Following data set:

          7.3.1 Material

          7.3.2 Internal Diameter

          7.3.3 External Diameter

        7.4 Connectors  

          7.4.1 Manufacturer and model Number


          7.4.2 Please attach detailed drawing

      8. Retention mechanism and loads to withstand:  

        8.1 Please attach drawing

        8.2 Desired or required normal mechanical load

        8.3 Desired or required lateral mechanical load

      9. Thermal interface:  

        9.1 Thermal Grease manufacturer and model number


        9.2 Desired or required geometrical characteristics of contact area:

          9.2.1 Flatness

          9.2.2 Smoothness  

      10. Environmental requirements

        10.1 Working temperature range, °C

        10.2 Working relative humidity range, %

        10.3 Working altitude range, meters from the sea level

      11. Durability and reliability requirements

        11.1 Vibration

        11.2 Thermal Cycling

        11.3 Drop height, mm -   

        11.4 MTBF, hours


    Business Requirements:

      1. Acceptance test

      a. Required Quantity of Samples  

      b. Target date for the beginning

      c. Duration

      d. Acceptance test procedure