Research Thermal Properties Of The Sintered Porous Brick Shale

Nowadays, the buildings in most areas of China conform to the energy-saving standards of 50%. The buildings in a few regions, such as the northern cold region, are conforming the higher standards of 65% in the new building energy efficiency. Energy saving plays a key role in the country’s over the long-term strategic sense, more and more attention to the subject on how to realize energy conservation and rational utilization of energy are paid by government departments. Building energy consumption accounts for over 28% of the total energy consumption of society in our country. The building envelops such as wall are important industry within the scope of building energy saving, which makes the rational use of enclosure structure material such as wall is particularly important. Sintered shale porous brick is a kind of new wall materials. It has the advantages such as environmental protection, energy saving, and meet the need of sustainable development. Many scholars at home and abroad has done a lot of research on sintered shale porous brick adiabatic performance, however, in the practical application, porous brick wall heat insulation performance are still unable to ease the current actual contradiction of energy-saving building wall materials. Therefore, in this thesis, the following research of such aspects have been done to improve the sintering porous brick shale thermal performance of heat preservation.1. Analyzes emphatically the factors affecting the thermodynamic performance of sintered shale hollow brick. Based on the influence parameters, and in strict accordance with the relevant national standards and specifications, 16 kinds of sintered porous brick are designed with which the shape size are same, the torque type hole aspect ratio, number of holes and air holes arrangement are different. Through fluent simulation software, the equivalent coefficient of thermal conductivity of porous brick is obtained. Using the simulation results, the paper analyzes the different effect of thermodynamic performance on the torque type hole length-width ratio, the number of holes and the hole arrangement of sintered porous brick, through which we can find out the influencemechanism of these key parameters on thermal performance of the sintered porous brick.2.Using the CFD simulation software to establish a mathematical model heat transfer of porous brick wall, and then to get internal heat transfer mechanism of porous brick wall and calculate the equivalent coefficient of thermal conductivity of porous brick wall. At the same time,through the sintered porous brick shale(10 rows of hole) which are designed to produce to determine the heat transfer coefficient of porous brick wall, the equivalent coefficient of thermal conductivity of the porous brick wall is obtained by conversion. The result of the porous brick wall equivalent coefficient of thermal conductivity from simulated compared with the result from measurement is only 1.83%. It also verify the feasibility of software in a simulated the thermal properties of brick wall and provides a reliable method for later rapid design of porous brick with excellent thermal performance by computer simulation.