螺杆式空气压缩机能耗特性研究

Study on energy consumption characteristics of screw air compressor

从分子热力学和流体力学的角度探究了吸气参数和管道粗糙度对螺杆式空气压缩机能耗的影响规律。结果表明:空气压缩机能耗与吸气温度呈线性正相关,吸气温度增加5℃,能耗增加约3 k J,相对空气湿度增加,能耗也随之增加;空气压缩机能耗与排气压力线性正相关,排气压力每增加0.1MPa,能耗增长约9%;空气压缩机能耗与进气管和排气管管道粗糙度有关,管道越粗糙,沿程阻力损失越大,能耗越大。根据研究结果,提出在工业应用时适当降低空气压缩机吸气温度、湿度和排气压力,采用表面光滑管道的节能方案。

The paper studied the influence of suction parameters and pipe roughness on the energy consumption of the screw air compressor from the point of view of molecular thermodynamics and fluid mechanics. The results showed： the energy consumption of the air compressor was linearly and positively related to the suction temperature, the intake temperature each rose by 5 ℃, the energy consumption of the air compressor increased by about 3 k J; the energy consumption of the air compressor increased with the increase in air humidity; the energy consumption of the air compressor was linearly and positively related to the exhaust pressure, the exhaust pressure each rose by 0.1 MPa, the energy consumption increased by about 9%; the energy consumption of the air compressor was related to the roughness of inlet pipe and exhaust pipe, the rougher the pipe was, the more the resistance loss along the path was, and the greater the energy consumption was. According to the research results, the energy saving scheme of reducing the suction temperature and humidity of the air compressor and applying the smooth-surfaced pipe during industrial application was put forward.