Homemade High-temperature Heat Flux Sensor And Hardware Realization

There are a great deal of heat transfer problems need to be resolved in our daily life,science research,aeronautics and space fields,power engineering and so on.With the development of modern science and technology,especially the use of heat transferin aviation,energy management and so on,it is not sufficient to take the temperature as the only signal of heat transfer.Then,technologies of heat transfer measurement got great development and heat flux gages appeared.The radiant heat flow meter is only use the heat reservoir,because in the conditon heat dissipation is forbiden on working. This is the cause of work time`s restricting. It is discussed that extending the work time,and accomplishing the test mission.(1)In this article, it is introduced that the princple of radiant heat flow meter, and we deduce the formular of meter . Chrome-nickel is instead of copper in the meter`s fuse,which change T-thermocouple to E-thermocouple. The scale of E-thermocouple is wider than T-thermocouple, so the designed heat flow meter is more compatible than the old one. Because the output of E-thermocouple is bigger on the same temperature, the new heat flow meter is more sensitive.(2)We are analyzing the problem in which the radiant heat flow meter is measuring the heat flow of the fire,and heat dissipation is forbiden. On this analysis ,the improvements of the meter is proposed. We design the new structure of the meter which is emulated, and the emulation proved the enhance of new structure in heat insulation.(3)We design the heat flow meter signal of collect circuit which could monior the temperture of heat reserovir on measure the heat flow. At last ,using the law of intermediate temperature and the law of radiation,the output of meter is adjusted. We compare the two adjustments on the experiment.Compared the result of new heat flow`s burning experiment with the old one, the improvements of the meter`s heat insulation and signal is proved.