Near-zero emissions, much less noise, low maintenance. That’s the sales pitch behind liquid nitrogen (LN2)-based cooling systems for trucks and trailers. So what’s the catch? Unfamiliarity with LN2, mainly, and some reluctance on the part of temperature-controlled carriers to move away from tried-and-true diesel-powered compressors.
But, with more and more regulatory focus on greenhouse gases, that comfort level with diesel systems may have run its course. And, backers o