Forced-air

Abstract: A temperature control system for a residential zoned forced air system which maintains programmed temperature setpoints for specific periods in each zone having hold, override, and vacation modes which can temporarily alter the programmed temperature setpoints and time periods for either individual zones or all zones until the next programmed time or the temporary modes are released.

Abstract: In this paper, a passive approach to improve temperature uniformity in a simple battery pack, in which an inlet plenum is added as a secondary inlet to a battery pack with an axial air flow, is examined. This inlet plenum changes the direction of the flow and eliminates the problem of recirculation and non-availability of air between the adjacent cells. Three different configurations are considered to examine the effects of the orientation of inlet plenum and the cells. CFD (computational fluid dynamics) is used to perform detailed simulations of the battery packs and the results are validated with data obtained experimentally from one of the battery pack configuration. The thermal performance of the battery packs is compared to the baseline case, and the results indicate an average maximum temperature reduction of the cells by ∼4% and an improvement in temperature uniformity of the cells by ∼39%. This is a simple battery pack that uses forced air passive cooling (no moving parts required in the battery pack) and introduces mixing and turbulence in the air flow to increase the temperature uniformity in the battery pack.

Abstract: The batch capacity of a barrel epitaxial reactor is improved by increasing the reaction chamber size and increasing the length of the radiant heat source so that a uniform temperature is maintained over a larger flat zone in the reaction chamber. Also, forced air flow from the blower of the reactor is distributed so that a positive air flow is maintained along the exterior wall of the reaction chamber and consequently the wall is maintained at a uniform cold temperature relative to the temperature of the reaction chamber.

Abstract: A surgical warming system includes at least one and generally two or more compartments, whereby each compartment is separately heatable and controllable over its own range of temperatures. The compartments may be implemented as separate warmer units in stacked relation. Alternatively, the compartments may be constructed into a single cabinet structure. The heat within each compartment is provided by forcing air through a heating chamber and into the compartment whereby the forced air is recycled and mixed with make-up air. Each individually controllable compartment enables an operator to simultaneously maintain the individual compartments of the same warming system at different desired temperatures. In addition, the warming system further includes for each compartment a display and a tray or drawer with individual receptacles and corresponding monitoring assemblies in order to indicate the temperature and residence time of each item heated within that compartment.