Abstract: A convenient serving-size pan (10) with flange (13), and flanged lid (11) removably attached by a hinge (14), enabling a wide range of pourable, particulate, and solid foods to be cooked in quantity in forced-air convection ovens. The pan and lid are fabricated of highly heat conductive materials with interior surfaces suitable for direct food contact. Exterior surfaces of the pans are smooth and plain to minimize insulative film coefficients and maximize heat transfer. A vertical stacking system provides effective use of oven space while maintaining sufficient space between pans for effective heat transfer.

Abstract: A high temperature fluid-to-fluid heat exchanger is described wherein heat is transferred from a higher temperature fluid flow core region to a lower temperature fluid flow annulus. The wall separating the high and low temperature fluid flow regions is comprised of a material having high thermal absorptivity, conductivity and emissivity to provide a high rate of heat transfer between the two regions. A porous ceramic foam material occupies a substantial portion of the annular lower temperature fluid flow region, and is positioned to receive radiated heat from the wall. The porosity of the ceramic foam material is sufficient to permit a predetermined relatively unrestricted flow rate of fluid through the lower temperature fluid flow region.