Normal cubic meter

PARAMETER MAXIMUM LEVEL milligrams per normal cubic meter... 

Global annual production is about 45 billion kilograms (kg) or 500 billion Normal cubic meters (Nrrd). A Normal cubic meter is a cubic meter at one atmosphere of pressure and o°c. Hydrogen is produced through a variety of processes discussed below using traditional fuels (see Table 4.1).7... 

SCF (standard cubic feet) gas is measured at one atmosphere and 70 °F (21.1 °C). Nm3 (normal cubic meters) gas is measured at one atmosphere and 0 °C. Liquid is measured at 1 atmosphere and the boiling temperature. 

In another paper, the authors advocated a plasma-assisted decomposition of methane into hydrogen and carbon.13 It was estimated that 1-1.9 kWh of electrical energy is consumed per normal cubic meter of hydrogen produced. The authors stated that plasma production of hydrogen is free of C02 emissions. However, since most of the electric energy supply in the world comes from fossil fuels, electricity-driven hydrogen production processes such as plasma and electrochemical processes, are C02 producers. 

NOTE scf = standard cubic feet Btu = British thermal unit EJ = exajoule = 1018 joules N-m3 = normal cubic meter, kg = kilogram. 

NOTE HHV = higher heating value LH V = lower heating value AH = enthalpy J = joule Btu = British thermal unit M = million k = thousand mol = mole N-m3 = normal cubic meter kWh = kilowatt hour. SOURCE NIST (2003), except DOE (2003f) for gasoline data. 

Annual natural gas use in the United States during 2001 was nearly 616 billion normal cubic meters (23 trillion standard cubic feet). Using... 

The plant, which began operating in 1984, produces more than 1.5 billion normal cubic meters (54 billion standard cubic feet) of synthetic natural gas annually. Coal consumption exceeds 15,000 t each day. Synthetic natural gas leaves the plant through a 610 mm (2-ft)-diameter pipeline, traveling 34 miles (54 km) south. There it joins the Northern Border Pipeline, which transports the gas to four pipeline companies. In addition to natural gas,... 

The raw gas after condensation of liquids at ambient temperature is recovered at a volume of 500 to 1000 normal cubic meters per ton of solid waste (about 19 000 to 37 000 SCF/t) containing up to 80 % of the heating value charged with solid waste. 

The lower heating value of the product gas prior to gas purification was measured at 7500 to 9500 kJ/ normal-cubic meter while a volume of gas of 700 to 1100 nr per ton of gas was produced at normal operating conditions keeping the reaction temperature at about 1300 K. 

RUP 3 Nrn /hr Reid vapour pressure normal cubic meters per hour... 

One such process selected was the Institute of Gas Technology s U-GAS process, for which China acquired a license to build the world s first commercial plant (in Wujin). The basic job was to come up with a cost-competitive way of producing, per day, 1.7 million normal cubic meters (Nm3) of town gas, 200,000 tons of methanol, and 7 megawatts of electricity, according to Lau. The government approved the project in 1991, ground was broken in March 1992, and the first phase of the project was... 

The table shows the nature and quantity of the products formed in the presence of various alkalized precipitation catalysts during operation at 235°C. and 15 atm. with a synthesis gas of three parts of carbon monoxide and two parts of hydrogen. During the first month, the yields in grams per normal cubic meter of ideal gas fluctuated between 140 and 160 g. It was apparent that the addition of alkali was not necessary for the preparation of an active catalyst (in contrast to the normal-pressure synthesis). The yields obtained over a long period of time with a catalyst prepared by precipitation with ammonia and containing no... 

Acquired, installed and operated an electrolyzer which produces 10 normal cubic meters per hour (approximately 1 kilogram per hour) hydrogen. Tested the purity, dryness, flow rate, and hydrogen delivery pressure, for compatibility with Energy Conversion Devices, Inc. s (ECD s) (Ovonic) metal hydrides. 

Total yield of liquid >ro[Pg.126]

Here, Nm means normal cubic meters, with normal standing for 0°C and 1 atm. 

N or N2 = nitrogen = an inert gas, comprising about 80% of air and a large part of poc, unless using oxygen enrichment, net heating value = nhv = lower heating value, Ihv. See Ihv. neutral pressure plane = zero pressure plane = balanced pressure line (invisible), or level at which the pressure inside a furnace is exactly equal to the pressure outside the furnace at the same elevation. Usually not really a plane, but an invisible surface rumpled by burner jet and draft effects. See sec. 6.6.1. nm /h = normal cubic meters per hour, a unit of volumetric flow rate, equal to 37.9 scfh. nm is standardized at 0 C, 760 mm Hg, dry air or gas. A standard ft is defined at 60 F, 30 Hg, saturated air or gas. normal air = European near-equivalent of U.S. standard air , see also). 

Nm stands for normal cubic meters, where normal refers to standard temperature and pressure of the gas (p. 1318). 

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