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All gas equipment in Great Britain (but not Northern Ireland) was converted (by the fitting of different-sized burner jets to give the correct gas/air mixture) from town gas to natural gas (mainly methane) over the period from 1967 to 1977 at a cost of about £100 million, including writing off redundant town gas manufacturing plants. All the ...
The Tai Po plant produces 97% of its town gas output while the remaining 3% is produced at the Ma Tau Kok plant. [4] The two plants cover 1.8 million households via a network of more than 3,500 kilometres (2,200 mi) of pipelines throughout Hong Kong. [5] Treated gas from landfill sites is also utilised as fuel to reduce emission of greenhouse ...
Gas plants were built in almost every town, main streets were brightly illuminated and gas was piped in the streets to the majority of urban households. The invention of the gas meter and the pre-payment meter in the late 1880s played an important role in selling town gas to domestic and commercial customers. 1934 gas cooker in England
The oldest type, introduced in 1798 by Murdoch, et al.; when the term "manufactured gas" or "town gas" is used without qualifiers, it generally refers to coal gas. Substantially greater illuminant yield with use of special "cannel coal", which may be modern oil shale, richer in hydrocarbons than most regular gas coal (bituminous coal). Wood gas
Most town gas was also odorized, if it did not have its own odor. Modern 'natural gas' used in homes is far less toxic, and has a mercaptan added to it for odor for identifying leaks. Various names are used for producer gas, air gas and water gas generally depending on the fuel source, process or end use including:
The Wobbe index is expressed in MJ/Nm³ (where 'Nm³' indicates'm³ in Normal conditions), or sometimes in BTU/scf.In the case of natural gas (molar mass 17 g/mol), the typical heating value is around 39 MJ/Nm³ (1,050 BTU/scf) and the specific gravity is approximately 0.59, giving a typical Wobbe index of 51 MJ/Nm³ (1,367 BTU/scf).
Interactive maps, databases and real ... 9/13 How New York City Voted. Block-by-block map of votes in the Democratic mayoral primary. 9/13 New York City Election.
Standard Dry Air is the agreed-upon gas composition for air from which all water vapour has been removed. There are various standards bodies which publish documents that define a dry air gas composition. Each standard provides a list of constituent concentrations, a gas density at standard conditions and a molar mass.