Abstract: A heat transfer device for cooling a fluid has powered means for moving the fluid to create a primary fluid flow, a heat exchanger, and direction controlling surfaces for directing the primary fluid flow toward and through a first portion of the heat exchanger, thereby cooling the fluid flow. The direction controlling surfaces then split the primary fluid flow into a first and second subsidiary fluid flow, and direct the second subsidiary fluid flow through a second portion of the heat exchanger, thereby cooling it to a second temperature which is lower than the first temperature.

Abstract: A refrigerated food preparation table having an evaporator cooling coil and heat transfer fins which are baffled to create two air flows which are cooled to different temperatures. One air flow passes through a laminar air screen and across an open top of a food container, and the other f low passes along the outer surfaces of the food container, thereby cooling the food container and a volume defined therein. This configuration preferably cools the entire volume within the food container to a temperature below 40' F., yet remaining above 32' F. The laminar air screen may be disassembled and separated for the purpose of cleaning.