The chief difference between a pneumatic system and a hydraulic system is the media used to transfer power. Pneumatic systems use compressed gases, such as air or nitrogen, to transfer power. Hydraulic systems use fluids, such as oil or water, to transfer power from one point to another.
A pneumatic system is typically less expensive to design, install and implement than a similar hydraulic system. The reason for the lower cost is that pneumatic systems operate at much lower pressures. The lower pressures used in pneumatic systems allow the components used in these systems to be made of much less-costly materials than are required for a hydraulic system. Although pneumatic systems may be less expensive to design and install due to their relative simplicity and lower pressures, they are often more expensive to operate due to the high energy consumption of air compressors.
Other differences between pneumatic and hydraulic systems include the cleanliness of the system, the complexity of maintenance and the operating pressure. Pneumatic systems are typically cleaner than hydraulic systems. If a pneumatic system leaks, nothing is vented but compressed gases. If a hydraulic system leaks, the fluid used in that system creates a housekeeping problem. Hydraulic systems do have an advantage of pneumatic systems because of the high pressures that can be utilized. The higher pressure of a hydraulic circuit allows a smaller actuator to produce more work than a similar-sized actuator in a pneumatic system.Learn More
Pringles are made from a combination of rice, corn, wheat and potato flakes. This powder-like substance is turned into a dough using water, and the dough is rolled out onto a sheet and mechanically cut. Afterward, the chips are baked in oil for a few seconds, blown dry and covered in seasoning.Full Answer >
According to worldsteelprices.com as of April 2014, the global composite carbon steel price was $713 per tonne. The price by then had decreased by $13 since January 2014.Full Answer >
Copper wire is used widely for power transmission and is also used in potable water and heating systems. Copper wire can be found in building construction, electric and electronic products, transportation equipment, consumer and general products, and industrial machinery and equipment.Full Answer >
Generic paper towels are made by grinding up wood and other plant material into fibers. Then, the fibers are bleached white, pressed into thin sheets and dried out.Full Answer >