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The NZR E class of Double Fairlie steam locomotives were two different types of Fairlie steam locomotives, used on New Zealand's railway network. [1]They were the first classes to take that designation, followed by the E class Mallet compound locomotive of 1906 and then the E class battery electric locomotive of 1922. [2]
The Leader was a class of experimental 0-6-0+0-6-0 T steam locomotive, produced in the United Kingdom to the design of the innovative engineer Oliver Bulleid.The Leader was an attempt to extend the life of steam traction by eliminating many of the operational drawbacks associated with existing steam locomotives.
The NZR J A class was a class of fifty-one 4-8-2 steam locomotives operated by the New Zealand Railways Department (NZR). The locomotives were built in two batches; the first batch was constructed at the Hillside Workshops at Dunedin between 1946 and 1956, while the second batch was constructed by the North British Locomotive Company (NBL) of Glasgow, Scotland in 1951.
Steam is also useful in melting hardened grease and oil residues, so it is useful in cleaning kitchen floors and equipment and internal combustion engines and parts. Among the advantages of using steam versus a hot water spray are the facts that steam can operate at higher temperatures and it uses substantially less water per minute. [13]
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The quantitatively described steam quality (steam dryness) is the proportion of saturated steam in a saturated water/steam mixture. In other words, a steam quality of 0 indicates 100% liquid, while a steam quality of 1 (or 100%) indicates 100% steam. The quality of steam on which steam whistles are blown is variable and may affect frequency.
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A contended service is a service which offers the users of the network a minimum statistically guaranteed contention ratio, while typically offering peaks of usage of up to the maximum bandwidth supplied to the user. Contended services are usually much cheaper to provide than uncontended services, although they only reduce the backbone traffic ...