The verification process confirming delivery location accuracy and accessibility before attempting delivery, critical for last-mile efficiency in South Africa’s complex addressing environment. Address validation involves checking street addresses against mapping…
Aerodynamic Drag
The resistive force opposing vehicle motion through air, increasing with the square of velocity and directly proportional to frontal area and shape. Aerodynamic drag consumes 10-25% of fuel in refrigerated…
Aggregation Point
A designated location where multiple shipments from different origins are consolidated into shared transport loads, enabling efficient distribution through combined delivery routes. In cold chain logistics, aggregation points must provide…
Air Temperature vs Product Temperature
The critical distinction between the temperature of air surrounding frozen products and the actual temperature within those products — a gap that can exceed 9°C after routine freezer operations and…
Airflow Pattern
The directional movement and circulation of air within refrigerated space, determining temperature uniformity – industry-standard designs create ±8-12°C variation by ignoring basic convection physics.
Altitude Correction Factor
A mathematical adjustment applied to refrigeration equipment specifications to account for reduced performance at elevations above sea level, where decreased atmospheric pressure and air density diminish compressor volumetric efficiency and…
Ambient Temperature
The temperature of the surrounding environment in which refrigeration equipment operates, serving as the heat sink for condenser heat rejection and determining the thermal load that refrigeration systems must overcome.…
Ambient Temperature vs Controlled Temperature
The distinction between unregulated environmental conditions (ambient) and actively managed temperature environments (controlled). Ambient temperature in South Africa can range from -5°C in winter highlands to 40°C+ in summer regions,…
Attended Delivery
See: Last-Mile DeliveryDelivery service requiring recipient presence and signature confirmation at time of handover. For temperature-controlled operations, attended delivery ensures immediate transfer to customer storage, minimizing time at ambient conditions.…
Between-Pack Temperature
A non-destructive temperature measurement method specified by Codex Alimentarius (CAC/RCP 8-1976) where a temperature probe is placed between frozen product cartons or packages to approximate product temperature without penetrating product…