250000 pascal to psi series#

1309 was built from a 40-year-old design, with mechanical lubricators, stoker, and superheater, the last of a series of 2-6-6-2s that the C&O began in 1911. The locomotive, along with several others, all considered impractical to restore to working condition, were taken out of storage in 1972 for cosmetic restoration and later moved to the B&O Railroad Museum in Baltimore, Maryland in 1975, where the restoration was completed while on static display. It was ordered by the Chesapeake and Ohio Railway to pull heavy coal trains in the mountainous terrain of West Virginia and Kentucky which it did from 1949 until its retirement from revenue service in 1956, after which it was stored for nearly twenty years at their roundhouse at Peach Creek, West Virginia. It was the last Class 1 mainline locomotive built by Baldwin, maker of over 70,000 locomotives since 1832. 1309 was built by Baldwin Locomotive Works in November 1949. History Revenue service Ĭhesapeake & Ohio Railway No. This was the first time an articulated locomotive operated in the eastern United States since the retirement of Norfolk and Western 1218 in late 1991. The restoration was completed on December 31, 2020, and the locomotive entered tourist excursion service for the WMSR on December 17, 2021.

1309 was moved to the B&O Railroad Museum for static display until 2014 when it was purchased by the Western Maryland Scenic Railroad (WMSR), who undertook a multi-year effort to restore it to operating condition. It was the very last steam locomotive built by the Baldwin Locomotive Works in 1949 and originally operated by the Chesapeake and Ohio Railway (C&O) where it pulled coal trains until its retirement in 1956. Western Maryland Scenic Railroad 1309 is a compound articulated class 'H-6' ' Mallet' type steam locomotive with a 2-6-6-2 ( Whyte notation) wheel arrangement. 1309 in Ridgeley, West Virginia, on December 17, 2022 Although the pascal is more widely used in scientific contexts, psi is more often used in everyday contexts, particularly in countries like the United States as well as others under the US customary or imperial systems of units.ġ5 bar = 15 × 14.503773773 psi = 217.No. As such, the prototype pound at the time was known as the avoirdupois wool pound.Ĭurrent use: The psi is fairly widely used to measure numerous pressures, such as tire pressure, scuba tank pressure, natural gas pipeline pressure, among others. The system is believed to have come into use in England around 1300 and was used in the international wool trade. It is based on the avoirdupois system, a system that uses weights in terms of the avoirdupois pound, which was standardized in 1959. History/origin: Pound-force per square inch is a unit that originated in the imperial and US customary systems of units. One psi is approximately 6,895 pascals (N/m 2). It is defined as the pressure that results when a force of one pound-force is applied to a one-square-inch area. Pound-force per square inchĭefinition: A pound-force per square inch (symbol: psi) is an imperial and US customary unit of pressure based on avoirdupois units. Meteorologists and weather reporters worldwide often use this unit for convenience, since working in pascals would result in much larger values. Millibars (symbol: mb) are also commonly used when referencing atmospheric air pressure, where atmospheric pressure equals 1013.25 mbar (101.325 kPa). The International Bureau of Weights and Measures has specified the bar as a unit that authors should have the freedom to use but has chosen not to include the bar in the list of non-SI units accepted for use with SI. The term 'bar' comes from the Greek word 'baros,' which means weight.Ĭurrent use: Although the bar is a metric unit of pressure, it is not accepted within the International System of Units (SI) and is even deprecated within certain fields. History/origin: The unit, bar, was introduced by Vilhelm Bjerknes, a Norwegian meteorologist who founded modern weather forecasting. It is equal to 0.987 atmospheres (101,325 Pa), the unit often used as a reference of standard pressure. Definition: A bar (symbol: bar) is a metric unit of pressure that is defined as exactly 100,000 pascals (symbol: Pa).

250000 pascal to psi