Screw machines, mainly including single-screw type and twin-screw type, have gone
through significant development and improvement during the past decade. This paper …

This study investigates a numerical model of an oil-free twin screw compressor with an
ammonia-water mixture as refrigerant and liquid injection. The compressor was identified as …

The current paper presents the results of the experimental analysis to assess and optimize
the twin-screw compressor's efficiency by varying the volume ratio. The experimental tests …

Steam compressor shows great energy-saving potential in mechanical vapor compression
and high-temperature heat pump systems. However, leakage remains a huge problem for …

Recently, the single screw compressor (SSC) has been applied in the low-temperature heat
pump system with the purpose of achieving higher system efficiency. However, the …

The relatively simple and reliable design, the high degree of automation, and the use of cost-
effective performance control methods minimize the specific energy consumption and make …

Both direct and indirect heating compression methods were proposed to satisfy the
requirement of industrial steam compression and supply. The compression process in a …

Achieving high temperature lifts (> 200 K) via a chemical heat pump based on salt
hydration/dehydration reactions requires the transport of water vapor from low to high …

Twin-screw compressor technology is widely employed in commercial and industrial
HVAC&R applications as well as in air-compression and gas processing industries. Twin …

为了研究双螺杆空压机内气动噪声的大小与分布规律, 建立双螺杆转子的三维模型与空压机的流
场模型. 将流体动力学计算方法和声学有限元技术相结合, 研究转子中心距和齿顶间隙对双螺杆 …