Confrontational technical analysis challenging refrigerated transport industry complacency. These articles expose systemic inefficiencies operators pay for but manufacturers won’t discuss: R25,000/year wasted on timer-based defrosts ignoring actual frost accumulation, 130W floor heat load from 70°C pavement that nobody calculates, “smart fleet” telematics systems that document failures instead of predicting them, and 1960s European specifications applied to African altitude and urban heat islands. Physics-based thermodynamic calculations with South African operational context. Written by operators who understand economics and refuse to accept “industry standard” as justification for waste. No marketing fluff—just confrontational engineering transparency backed by 770,000+ kilometers of real-world data.
Technical Articles
A localized area in an insulated structure where higher thermal conductivity materials create a pathway for accelerated heat transfer, bypassing surrounding insulation and causing concentrated thermal losses. In refrigerated vehicles,…
Technical Articles
A localized area in an insulated structure where higher thermal conductivity materials create a pathway for accelerated heat transfer, bypassing surrounding insulation and causing concentrated thermal losses. In refrigerated vehicles,…
Technical Articles
The fundamental thermodynamic process used in mechanical refrigeration systems, converting electrical or mechanical energy into cooling capacity through phase changes of refrigerant between liquid and gas states. The cycle consists…
Technical Articles
Your freezer has four temperature sensors and they all show -15°C. Congratulations — you have four instruments confirming your compressor is running. None of them confirm your product is frozen. Here’s the physics of why air temperature ≠ product temperature, the glycol-buffered probe that bridges the gap, and why the CDC won’t let clinics monitor vaccines with air sensors alone.
Technical Articles
The fundamental thermodynamic process used in mechanical refrigeration systems, converting electrical or mechanical energy into cooling capacity through phase changes of refrigerant between liquid and gas states. The cycle consists…
Technical Articles
Self-contained refrigeration systems mounted on vehicles, trailers, or shipping containers, providing active temperature control independent of vehicle operation. TRUs include compressors, condensers, evaporators, controls, and power sources (typically diesel engines…
Technical Articles
Specialized logistics provider focusing exclusively on last-mile delivery of frozen products, maintaining strict temperature control from pickup through final handoff. Unlike general couriers adding refrigerated capacity, frozen food couriers design…
Technical Articles
Average thermal load: 2.3 kW. Peak load at each door opening: 5-6 kW. A system rated for the average cannot handle the peaks. After each stop, temperature recovers partially before the next opening. Across 15 stops, a system “working perfectly” drifts from -18°C to -14°C. Recovery capacity is the metric nobody discusses.
Technical Articles
The total heat energy that must be removed from a refrigerated space to achieve and maintain target temperature, comprising transmission loads through insulation, infiltration loads from air exchange, product loads…
Technical Articles
Why do billion-rand racing programmes enclose their radiators while transport refrigeration installers insist condensers need “open air”? We calculated what the industry won’t: capture efficiency, pressure differentials, and recirculation losses. The results explain why your TRU underperforms — and what physics demands instead.