GOOD DESIGN PRACTICES

From design to manufacturing Climetal will go hand-in-hand with you.

Climetal Software for Microchannel Coils.

Climetal will assist you in the integration of the Microchannel Technology in your Sytems. Our products are customized, with this aim Climetal uses a Simulation-Software to adapt our products to your needs.

This on-line software (web based) is a free calculation tool, very user-friendly; there is no need to neither download nor to install it.

You just need a user name and password, an internet connection and there you go! This will allow you to make your own selections, obtaining performance simulations in different working conditions, e.g: type of refrigerant, dimensions, air ow, temperatures etc.

GOOD DESIGN PRACTICES

Climetal Microchanel Simulation

Customized Design.

Climetals drawings ensure our customers the coil will properly t into their equipment frame or systems.

The drawings include all the dimensioning details to achieve the completely satisfaction of our customers.

We will also assist you in the design of the coil and the related parts of your unit, i.e. by recommending or reviewing different possibilities regarding: connection, xing, supports, etc. for a proper assembly of the heat exchanger in your system.

GOOD DESIGN PRACTICES

Climetals drawings

DILATATIONS:Your coil will expand and contract during its normal operation due to the extreme temperature changes it will go through. Make sure your xing system allows the coil to expand and contract VERTICALLY and HORIZONTALLY. Otherwise, the aluminum will fatigue and leak after sometime. Make sure your xing points are not rigid and allow the coil to expand freely, as dimensions will change according to the following formula:LT=Lo- -t whereAluminum = 24x10-6Lo= Initial lengthLT = nal lengtht= Temperature changeExample:A 2 meter coil with t=100C will expand and contract 4,8mm

VIBRATIONS:Your coil will be most likely working under continuous vibrations either coming from the compressor or from the fans. You cannot eliminate the origin of your vibrations, but you can avoid them affecting your coil. Otherwise, the material will fatigue and, eventually, leak.

Some best practices to avoid vibrations to affect your coil are:Use some exible sections along your piping, specially the one going from the compressor to the coil inlet.

Isolate the coil from the frame with elastic or exible elements (rubber washers, shock absorbers, etc.).

Flexible hose

Rubber washer Example of incorrect xing: weight is on the microchannel.

Rubber support

Fixing recommendations

GOOD DESIGN PRACTICES

When designing your xtures and brackets make sure you take into account the following concepts:

EXAMPLE 1

EXAMPLE 3

EXAMPLE 2

EXAMPLE 4

Some examples of good xing

WEIGHT:Avoid to have any extra weight (fans, metal shrouds, etc.) supported by the coil. Having the weight of the coil resting on the microchannel is a bad practice. The weight

GOOD DESIGN PRACTICES

should be born by the manifold, which is the strongest part of the coil. If this is not possible, the coil should have an extra aluminum pro le or a dummy microchannel tube.

Vertical oating brackets

Top and bottom pins

Not recommended for coils bigger than 1000x1000mm

Side brackets with rubber washers

Not recommended for coils bigger than 1000x1000mm

Horizontal oating brackets

GOOD DESIGN PRACTICES

MECHANICAL

Commonly used with steel connections for AMONIA APPLICATIONS

BRAZED

Types of connections

According to the method for connecting the Cu tubes of the circuit to the heat exchanger we can ofer:

GOOD DESIGN PRACTICES

GOOD DESIGN PRACTICES

Angle connections

EVERY SIZE, EVERY ANGLE

28 mm

28 mm

22 mm

22 mm

18 mm

18 mm

5/8 (15.88)

5/8 (15.88)

1/2 (12.7)

1/2 (12.7)

www.climetal.com

C/ Isla de Java, 27 - 28034 Madrid (Spain)l. (+34) 91 728 37 50

Fax. (+34) 91 728 37 57e-mail: climetal@climetal.com