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Klinge celebrates Earth Day with sustainable transport reefers

Posted by Sarah Klinge on Tue, Apr 23, 2013 @ 09:30 AM

As an innovator and leader in the industry, Klinge was one of the first transport refrigeration manufacturers to introduce electronic, then microprocessor controllers, and to produce transport refrigeration equipment enabling our customers to use the popular new alternative refrigerants, R-134a, and R-404a.

Klinge celebrates Earth Day


The Montreal Protocol came into force in 1989. The international treaty established requirements that began the worldwide phase-out of ozone-depleting CFCs (chlorofluorocarbons).

Until concerns about depletion of the ozone layer arose in the 1980s, the most widely used refrigerants were R-12 and R-22. 

Klinge Corporation has been and remains committed to reducing ozone depletion. The company was one of the first transport refrigeration manufacturers to produce equipment that used the more environmentally-friendly refrigerants R-134a and R-404a.

Klinge Corp’s use of alternative refrigerants has helped to phase out ozone-depleting refrigerants.

EPA-approved (and interim Tier 4) generator sets

Current efforts on improving air quality originate from the Environmental Protection Agency’s Clean Air Act of 1970, which was passed a few months after the first Earth Day. The Act regulates air emissions from stationary and mobile sources.

In the 1990s, the EPA began an aggressive, long-term effort to reduce emissions from industrial equipment, such as diesel-powered generator sets, as well as new mobile equipment like agricultural tractors.

As an industry leader, Klinge Corporation’s supports the efforts of the EPA and offers EPA-Approved Tier 4 diesel-powered generator sets.

The U.S. EPA Tier 4 emissions regulation for medium to large generator sets began in 2011 with Tier 4 Interim standards and concludes in 2014 and 2015 with Tier 4 Final standards.

The Tier 4 regulation requires diesel engine exhaust emissions that are significantly lower than previous Tiers. For example, Electric Power Tier 4 Final products will produce approximately 93% less NOx and 94% less particulate matter (PM) compared to Tier 1 products.


Ultra-Low Temperature Unit:

Innovative evaporator design completes defrost in less time than competitors while also preventing heat from entering the cargo area.

The new transport freezer unit is to provide an improved design tailored to ocean shipment of ultra-low temperature cargo, while also removing the need for an internal evaporator section used in our previous models—thereby providing maximum usable cargo space and lowering carbon footprints.

Blast Freezer Container

Blast Freezer Unit:

The CBU-30 large high capacity centrifugal evaporator fan draws air through the load to ensure even temperatures throughout the load. Many standard units are not equipped with an evaporator fan system designed to accommodate cargos with high-pressure drops. Without Klinge Corp’s special design, airflow would be reduced and the blast freezing process would take considerably longer. A longer process decreases efficiency and increases energy use.

The design of the evaporator fan and the adjustable ceiling that covers the cargo provide efficient airflow control, which is essential for a quick lowering of the cargo’s temperature.

The Blast Freezer Container also features an improved defrost system. The improvement consists of a more efficient and thorough drain pan heating system which utilizes more direct hot gas heating. The condensing section has also been redesigned with high efficiency riffled condenser coils.


Klinge Corp’s MPC is designed around a proven technology with a robust microprocessor as the central controlling device. The controller is the most flexible and user-friendly controller available, while also still being compact and reliable.

The “on‑demand” defrost system optimizes the power usage for defrost and also optimizes the time available for refrigeration. This eliminates the use of air switches or plain hour interval timing between defrosting which introduces unnecessary heat into the container and thereby use unnecessary energy.

The MPC has been in service for nearly 30 years, evidencing the suitability and durability of the controller.

The sophisticated microprocessor controller provides reliable temperature control with an accuracy of ±0.4°F (±0.25°C) in extreme environments. This level of precision lowers energy usage.

Shift to freezing seafood to reduce carbon footprint and reduce costs

Deep Frozen Sushi Grade TunaAs a single yellowfin tuna can be valued at tens of thousands of dollars, some companies will opt for shipping fresh seafood by air for fear that freezing the seafood would reduce quality.

Fresh seafood that is air freighted yields a much higher transportation cost as well as C02 emissions.

Klinge Corp ultra-low temperature freezer equipment allows companies to store and transport valuable seafood by ocean freight. Companies can reduce carbon emissions by choosing to transport frozen seafood by ocean freight using Klinge Corp freezer equipment.

In addition to reducing carbon emissions, Klinge Corp freezer equipment has been proven to increase the quality certain seafood when frozen down to -60°C (-76°F). Additionally, studies have also shown that the shelf-life of some high value seafood is increased when frozen to -60°C (-76°F) and thawed, at a time of the customer’s choosing, in a controlled environment.

Tags: ultra-low temperature reefer, blast freezer, earth day, environmentally-safe refrigerant