Numerical Simulation of Heat Transfer and Gas Flow Characteristics in Honeycomb Ceramics

Abstract

Honeycomb ceramics is the key component of the thermal flow-reversal reactor, which is for oxidation of coal mine ventilation air methane. In this paper, numerical simulation method was used to study the honeycomb ceramics' heat transfer process, and the effects of temperature difference and hole side length on heat transfer and the resistance losses were investigated. The calculating results show that the temperature difference between the gas and honeycomb ceramics is larger, then the heat transfer effect is better, and the resistance loss is bigger. In the situation other parameters are the same, then the hole side length is longer, the heat transfer efficiency is lower, and the resistance loss is smaller.

Experiment and characterization of dynamic thermal storage characteristics of porous media thermal storage system

“…Therefore, the resistance loss of regenerator increases with the decrease of pore size and the increase of specific surface area. This conclusion is consistent with the research results of Yuan and others [25][26][27][28][29][30] .…”

Dynamic simulation and experimental validation of an open air receiver and a thermal energy storage system for solar thermal power plant

“…Wang [27] showed that double-layer ceramic foam receiver gives improved performance and significantly higher efficiency based on the general thermophysical and permeability properties of the material. For the honeycomb ceramic used in the thermal energy storage system, Liu et al [28] numerically studied the heat transfer and flow resistance in honeycomb ceramics. Wang et al [29] numerically investigated the temperature fields in six types of honeycomb storage units with different porosities and hole pitches, and the influences of these parameters on the thermal storage time.…”

Study on Thermal Stress of Honeycomb Ceramic Regenerators with Different Parameters

“…In TFRR operations, honeycomb ceramic regenerators are exposed to thermal shock load, making their thermal shock resistance very critical. Domestic and foreign scholars who studied honeycomb ceramic regenerators mainly focused on the heat transfer characteristics [6,7] and paid little attention to thermal shock resistance of them [8]. Nevertheless, thermal shock resistance is one of the main factors that control the service life of regenerators.…”