Steam

Steam is water in the gas phase, which is formed when water boils. Steam is invisible; however, "steam" often refers to wet steam, the visible mist or aerosol of water droplets formed as this water vapor condenses. At lower pressures, such as in the upper atmosphere or at the top of high mountains, water boils at a lower temperature than the nominal 100 °C (212 °F) at standard temperature and pressure. If heated further it becomes superheated steam.

The enthalpy of vaporization is the energy required to turn water into the gaseous form when it increases in volume by 1,700 times at standard temperature and pressure; this change in volume can be converted into mechanical work by steam engines such as reciprocating piston type engines and steam turbines, which are a sub-group of steam engines. Piston type steam engines played a central role to the Industrial Revolution and modern steam turbines are used to generate more than 80% of the world's electricity. If liquid water comes in contact with a very hot surface or depressurizes quickly below its vapor pressure, it can create a steam explosion. Steam explosions have been responsible for many foundry accidents, and may also have been responsible for much of the damage to the plant in the Chernobyl disaster.

Waterloo

Waterloo may refer to:

Places

With the exception of Waterloo, Belgium, which is the eponym of the famed Battle of Waterloo, all of the following are named in honor of the battle:

Antarctica

Australia

Belgium

Canada

Hong Kong

New Zealand

Sierra Leone

United Kingdom

Central Railway

Central Railway can refer to the following:

See also

Waterloo Central Railway

The Waterloo Central Railway (WCR) is a non-profit organization that is owned and operated by the Southern Ontario Locomotive Restoration Society (SOLRS). In May 2007, SOLRS received joint approval from the Region of Waterloo and the City of Waterloo to run trains from Waterloo to St Jacobs and potentially as far north as Elmira. On a typical operating day, the train runs three times a day on Tuesdays (June to August), Thursdays (May to October) and Saturday (April to October). In 2015, the railway lost regular running rights south of Northfield Drive to make way for the Ion light rail project. All Market Train service now departs from the St. Jacobs Farmers Market.

Operations and Milestones

Running Rights

The WCR operates on the former Canadian National Waterloo Spur now owned by the Region of Waterloo, which connects Elmira, St. Jacobs and Waterloo to Kitchener, Ontario by rail. Through an agreement with the Region of Waterloo, the WCR operates passenger service in daytime hours, and the Goderich–Exeter Railway operates freight service in evening hours. From 2007 to 2014, the WCR leased space in the City of Waterloo Visitor and Heritage Information Centre which was formerly owned by the Waterloo-St. Jacobs Railway. As of 2015, the WCR no longer operates south of Northfield Drive.