EXPERIMENTAL MEASURMENTS OF THERMAL PROPERTIES FOR MEXICAN BUILDING MATERIALS TO SIMULATE THERMAL BEHAVIOR TO SAVE ENERGY
One of the main factors that determine the reliability of buildings thermal design is the values of thermal and heat transfer properties used during this process. In order to optimizing such thermal design process, there is little information available of the most utilized building materials in Mexico; hence, some measurements were carried out. We present thermal conductivity experimental results for: red brick, tepetate, adobe and concrete. Furthermore, experimental data of convective heat transfer coefficients are reported on: red brick, tepetate, adobe and concrete walls. Kondratyev methodology was used for thermal conductivity estimations. Kondratyev methodology is based on the cooling off of bodies in regular state analysis. Thermal conductivity values were: red brick kL =0.906 W/mC, tepetate kT =0.648 W/mC, adobe kA =0.570 W/mC, and concrete kC =1.918 W/mC. Red brick, tepetate, adobe and concrete test walls of 0.46x0.56 and 0.06 m thick, were manufactured, as well as a prototype of testing for mounting the walls, in order to evaluate their convective heat transfer coefficients. Measurements were carried out at the Institute of Engineering-UNAM Wind-Tunnel, for an air velocities interval of 2-10 m/s. Reported values for convective coefficients fluctuate on 16-134 W/m2℃, depending on material and position wall, as well as air velocity.
Thermal conductivity convective heat
Jesus Chávez-Galán Rafael Almanza Neftali Rodríguez
Instituto de Ingeniería, Universidad Nacional Autónoma de México Apartado Postal 20-364 México, D.F.
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）