Posts

MCHE replacement coils for York chillers

Kaltra supplied replacement coils for large chiller installation in Florida, USA

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Florida is a high-corrosivity region due to several factors, mainly due to marine atmosphere with high airborne salinity, and falls into the range provided for an ISO C3 category classification and even C4 for coastal areas. For C3 category environments, aluminum coils like microchannel heat exchangers without protective coating are unsuitable but are often used because of their low cost compared to coils with electrophoretic epoxy-coated ones. Traditional uncoated copper-aluminum coils demonstrate even worse corrosion resistance in C3/C4 regions.

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Replacement coil

Reduced prices for replacement coils for seasonal peak

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Cooling season 2023 in the Global North is about to start, and chiller owners and facility operators conduct seasonal maintenance. As is often the case, various issues are detected, including leaks or other damages beyond repair in condenser coils.

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Replacement coil

A quick guide to OEM replacement coils

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Introduction

Microchannel coils have become a mainstay in the HVAC industry for most air-cooled chillers and other air conditioning equipment. Aluminum microchannel heat exchangers (often abbreviated as MCHE or MCHX) offer a line of advantages for both manufacturers and end-users:

  • Reduced refrigerant footprint: internal volume of a microchannel condenser is about up to 60% smaller compared to a finned pack coil with copper tubes of the same capacity.
  • High corrosion resistance contributes to longer coil service life.
  • Lower required fan power draw as air pressure resistance of MCHE coils is low.
  • As a cheaper material, aluminum help keep condenser costs down.
  • Low weight.

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Chiller with microchannel condenser coils

Microchannel condenser coil replacement project

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This month, Kaltra announced the completion of a service project for the replacement of condenser coils for the chilled water production plant of a Tier-III data center in Munich, Germany. More than 120 original heat exchangers reaching the end of service life have been replaced with Kaltra coils providing a long lifespan and additional corrosion protection.

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Microchannel coil

Charging microchannel coils

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Microchannel coils are here to stay. Their use is rapidly spreading to a variety of HVAC applications. Microchannel heat exchangers are stronger, lighter, offer higher heat transfer compared to other types of air-to-refrigerant coils. They are smaller in size and also in internal volume, resulting in a refrigerant charge that is significantly reduced.

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Microchannel heat exchanger

Kaltra offers coil replacements for condensers and water applications

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When you need OEM replacement coils for your refrigeration or cooling system, Kaltra gets you covered with microchannel heat exchangers, matching or exceeding the performance of original coils.

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Microchannel heat exchanger

Microchannel coil: fix or replace

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by Lance Robinson

I vote for fix. Anytime you can fix a condenser as opposed to replacing it, is a good day for all in the repair business. Less time = more money. Customers are happier and all around better vibe. Replacement of perfectly good coil makes no sense. Instead make the fix in less than 5 minutes with a propane torch and a few simple instruments all HVAC techs have on hand.

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