A distributed parameter model of pipeline transmission line behaviour is presented, based on a Galerkin method incorporating frequency-dependent friction. This is readily interfaced to an existing model of the pumping dynamics of a plunger pump to allow time-domain simulations of pipeline pressure pulsations in both suction and delivery lines. A new model for the pump inlet manifold is also pro...

This study presents an electromagnetically-actuated reciprocating pump for high-flow-rate microfluidic applications. The pump comprises four major components, namely a lower glass plate containing a copper microcoil, a middle PMMA plate incorporating a PDMS diaphragm with a surface-mounted magnet, upper PMMA channel plates, and a ball-type check valve located at the channel inlet. When an AC cu...

Local villagers in the remote area of Wedung, Demak, northern Central Java, Indonesia utilized special equipment called wind-pump for sea water lifting and circulating on salt production processes. The farmer has skill to produce, manufacture maintain his own traditional wind-pump. In windpump structure unit consisted four blades horizontal axis windmill reciprocating pump. This experiment stud...

Simple, cheap, and efficient water pumps are needed in developing countries. A reciprocating pump driven by a switched reluctance linear tubular motor with double pistons that can be supplied from photovoltaic power source seems to respond this demand. This type of new (one motion) is presented the paper. In order develop strong driving force at two extreme piston positions achieve long stroke,...

This paper describes some of the challenges experienced in the application of a carbon dioxide reciprocating piston compressor to a water heating heat pump. Due to the characteristics of CO2 in a trans-critical cycle, including high pressures, high discharge temperatures, and high solubility in oil, particular difficulties may be experienced such as reduced bearing reliability caused by bearing...

The opposed-power reciprocating pump has the characteristics of high pressure, large flow, and efficiency energy saving. However, due to special structure pump, existing theoretical methods cannot analyze its dynamic performance. Therefore, this paper proposes a method analyzing power end pump. Firstly, according working principle structural traditional plunger novel complex is analyzed by anal...