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提出一种交叉V形空气集热器,其特征在于空气流动湍流大。设计制作两台不同的交叉V形空气集热器(1型、2型)和一台平板空气集热器(3型),分别对3台空气集热器在不同空气流速、倾角、辐照强度下的效率和进出口温差进行模拟、实验对比研究。在初始条件下,模拟结果显示,1型集热器的效率、进出口温差高于2型和3型集热器,分别为1%、0.1℃,17%、2.5℃。实验结果显示:1型集热器的效率、进出口温差高于2型和3型集热器,分别为1%、0.1℃,18%、2.6℃。模拟、实验研究表明,随着空气流速的增大,3台空气集热器的效率明显增大,同时其进出口温差变小;集热器放置倾角和辐照强度对3台空气集热器的性能影响小;但随着辐射强度的增大,集热器的进出口温差增大,呈线性变化。
A cross V-shaped air collector is proposed which is characterized by a large turbulent flow of air. Two different cross V-shaped air collectors (Type 1 and Type 2) and one flat air collector (Type 3) were designed and manufactured. The air-collectors were tested on three air collectors at different air velocities, Intensity of the efficiency and temperature difference between import and export simulation, experimental comparative study. Under the initial conditions, the simulation results show that the efficiency of type 1 collector is higher than that of type 2 and 3 collectors, which are respectively 1%, 0.1 ℃, 17% and 2.5 ℃. The experimental results show that the efficiency of Type 1 collector is higher than that of Type 2 and Type 3 collectors, which are 1%, 0.1%, 18% and 2.6% respectively. Simulation and experimental studies show that with the increase of air flow rate, the efficiency of three air collectors obviously increases, while the temperature difference between the inlet and outlet of the three air collectors becomes smaller. The inclination of the collectors and the irradiance intensity of the three air collectors Of the performance impact of small; but with the increase of radiation intensity, the inlet and outlet temperature increases, showing a linear change.