Heat Transfer Performance and Energy Saving Analysis of Different Section Floor Heating Pipe
Fluent was used to simulate the surface temperature distribution and average ground temperature for low-temperature hot water radiant heating of triangular,trapezidal,rectangular,square and circular floor heating pipes with the same area,and the non-uniformity of surface temperature,friction resistance,inlet and outlet pressure difference and thermal efficiency were calculated.The results show that the average surface temperature of the triangular(inverted)cross section pipeline is 1.1℃higher than that of the traditional circle at a flow rate of 110cm3/s.The trapezoidal(inverted)surface temperature non-uniformity of traditional circular section pipe is optimized by 12.27%;In terms of thermal efficiency,the order from high to low is triangle(inverted)>triangle(upright)>Trapezoid(inverted)>rectangle(aspect ratio 0.785)>rectangle(aspect ratio 1)>rectangle(aspect ratio 1.27)>Circle>trapezoid(upright),in which the thermal efficiency of the triangular(inverted)section pipe is 17.9%higher than that of the traditional circle.
Radiant floor heatingFloor surface temperature uniformityFluentNumerical simulationEnergy conservation
万方数据
维普
