Carrier Transicold is coming out with two new Supra eCool single-temperature electric truck refrigeration units.

The Supra e9 and e11 units can cover 14- to 28-foot Classes 5-7 straight truck applications, complementing the diesel-powered Supra S8 and S10 units.

The new units are zero emissions, designed for a full day’s use on par with diesel, reduce maintenance requirements, and run on environmentally friendly R-452A refrigerant. They come factory installed with Carrier Transicold’s Lynx Fleet telematics.

“Supra eCool units are versatile when it comes to their power supply source,” said Bill Maddox, senior manager of product management, Truck Trailer Americas, Carrier Transicold. “They can take power directly from battery-electric vehicles (BEV) or, when used with conventional engine-driven trucks, the units can run autonomously using their own power pack. This makes them especially well-suited for fleets in California that are now required to begin adding zero-emissions truck refrigeration units, which may be installed on trucks with battery-electric or engine-driven powertrains.”

When a separate power source is needed, the system draws from a 38-kWh high-voltage DC power pack with built-in water cooled temperature management system.

The Supra eCool design includes a variable-speed electric scroll compressor and an electronic expansion valve in the evaporator, which the company says help to extend the operating range by more precisely and efficiently matching power draw from the battery to the cooling need at hand.

The new units will be available later this year.