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The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it. The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions .
The previous Intersil was formed in August 1999 through the acquisition of the semiconductor business of Harris Corporation. [ 3 ] [ 4 ] [ 5 ] Intersil is a power management IC business, with specialized capability in power management and precision analog technology for applications in industrial, infrastructure, mobile, automotive and aerospace.
The calorific value Q of coal [kJ/kg] is the heat liberated by its complete combustion with oxygen. Q is a complex function of the elemental composition of the coal [citation needed]. Q can be determined experimentally using calorimeters. Dulong suggests the following approximate formula for Q when the oxygen content is less than 10%:
Harris Corporation was an American technology company, defense contractor, and information technology services provider that produced wireless equipment, tactical radios, electronic systems, night vision equipment and both terrestrial and spaceborne antennas for use in the government, defense, emergency service, and commercial sectors.
In thermodynamics, the thermal efficiency is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc.
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).
The company's name was changed to Harris in 1975. [5] Harris Corporation sold its broadcast equipment operations to the Gores Group in 2012 with the sale completed in 2013. [6] In March 2014, Harris Broadcast was split into two companies, Imagine Communications and GatesAir. The GatesAir name restores the company's historic name. [7]
Philip Harris Ltd was a British laboratory supply company (part of Philip Harris plc) which became a major supplier of equipment for school science. The brand name is now owned by Findel plc . The company was originally based in Digbeth , Birmingham , and was started by Thomas Ellis, a surgeon, in 1817.