Prime Mover Magazine


Thermo King Precedent G-700

  • Posted on Monday 3rd, July 2017
Thermo King Precedent G-700

With more choices, greater efficiency and improved temperature control, Thermo King’s Precedent G-700 refrigeration unit is yet another landmark accomplishment in the company’s long and storied history.

Since Thermo King inventor, Frederick McKinley Jones, stepped on to the refrigerated transport equipment scene in 1938, the US-based company has become a global force in the cold chain transport industry – spawning a wealth of temperature control systems used across trailers, rigid trucks, shipping containers and buses, with each release an improvement on the last.

In 2017, Frederick’s spirit lives on as Thermo King’s engineering department develops new refrigerated solutions to meet the ever-growing array of niche demands in the global transport market. The latest of those developments is Thermo King’s Precedent series, which was first developed to meet the strict emissions targets that the US Environmental Protection Agency (EPA) passed in 2013.

According to Peter Lawrence, Regional Director for Thermo King Australia and New Zealand, the US ‘Tier 4’ regulations drastically reduced the allowable particulate emissions for refrigeration units sold in Thermo King’s biggest market. “Manufacturers had to find a way to reduce particulate emissions tenfold,” Peter recalls. “Some proposed exhaust after-treatment via fitment of a Diesel Particulate Filter (DPF) and others chose to drop down a category of engine horsepower with more lenient emissions standards.”

To offer customers in the US more options, Thermo King also chose to develop a refrigeration unit that could retain full horsepower capability and tackle emissions at the source. In an industry first, Thermo King developed the Precedent series using a Common Rail diesel engine with electronic injection.

“The now-established S-600 and S-700 platforms retain the full 35hp capability and feature the cleanest emissions profile of anything ever made with a diesel engine and are EPA certified equipment,” says Peter. “Thanks to our unique development, we provide options to the customer so they can choose their preferred balance between emission and cost."

For markets outside the US, Thermo King has now developed another option – the new G-700. “The new Precedent G-700 runs on a reconfigured version of the proven, mechanically-injected engine that powered the successful SB-330 model,” Peter says. “Electronic fuel injection comes at an increased cost over mechanical injection, so Australian customers now have an option that balances emissions and cost priorities without sacrificing the horsepower required for a strong pull-down capacity.”

Like its siblings in the Precedent family, the G-700 features a diesel direct electric architecture, two-speed electric evaporator blower, microchannel condenser coils and temperature control design to help the operator save fuel across real-world applications. To further reduce fuel consumption, users can choose the Eco-Pulldown technology, which allows the G-700 to operate in low speed during initial pulldown until the temperature inside the trailer reaches a set point.

Having made its debut at the 2017 Brisbane Truck Show in May, Thermo King’s G-700 has now been launched onto the Australian market. “We believe that the Precedent G-700 is a good match for the thermal efficiency of refrigerated trailers in a hot climate like Australia and therefore the local market will embrace the new design,” Peter says.

“There are a number of markets that require a strong pull-down capacity to deal with high ambient conditions and less than ideal thermal efficiency. In Australia’s case, this is caused by the thin side walls that are necessary to stay within the legal external width and still accommodate two pallets next to each other.

“The result is a reefer that will deliver the ultimate in temperature control, is good for the environment and saves the customer money with the lowest running costs.”
Just like the first Thermo King unit in 1938 that allowed perishable goods to be reliably transported beyond an 80km radius, the 21st century G-700 unit is again setting new standards and taking innovation to the limit by keeping costs and fuel consumption lean, while filling another niche in a diverse global industry – all factors that would have impressed Frederick Jones.

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