Heat transportation by oscillatory flow in a double tube with orifices

摘要

Present paper deals with experimental study on the heat transportation rate of a new kind of heat transportation pipe, double tube with orifices at both ends. Sinusoidal reciprocal flow with frequency f and tidal amplitude Ai was given at one end of the heat transportation tube. Heat transportation rate was measured in the frequency range from 0.1Hz to 1.0Hz and in the tidal amplitude range from 7mm to 35mm. We found that the new type of heat transportation pipe can transport about 10 to 100 times the heat that the single round tube type heat transportation pipe can transport.