Aiming at the relationship between the azimuth and inclination of the radiation received by the compound parabolic collector （CPC） and the heat collection performance. Calculated the amount of CPC received radiation and the optimal inclination at different directions, in different seasons, the influence of azimuth angle on the optimal inclination angle is analyzed, the relationship between the maximum radiation of CPC and its installation inclination and azimuth is discussed in combination with different regions. Turn out, in most areas, the best inclination in the whole year is near the local latitude, within 5°, a larger inclination angle should be used in the winter and a smaller inclination angle in summer; the south is the best direction, solar radiation decreases with increasing azimuth, when CPC deviates from the true south direction, the inclination angle should be reduced to reduce solar radiation loss. Tested the amount of radiation received by the CPC inclined plane with different inclination angles facing south, the accuracy of theoretical calculation is verified. And studied the heat collection performance of CPC with different inclination angles, the instantaneous thermal efficiency can be increased by more than 3.9% after the optimum inclination angle is determined,and the practical application value can be improved in the CPC application.
Key words
CPC /
heat collection efficiency /
inclination angle /
solar radiation
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