British thermal unit


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unit

 [u´nit]
1. a single thing; one segment of a whole that is made up of identical or similar segments.
2. a specifically defined amount of anything subject to measurement, as of activity, dimension, velocity, volume, or the like.
3. a distinct part of a hospital, usually having a specific physical location and serving a defined function; see under names of specific units.
Ångström unit angstrom.
atomic mass unit (u) (amu) the unit of mass equal to ¹⁄₁₂ the mass of the nuclide of carbon 12. Called also dalton.
autonomous nursing unit a nursing unit under a decentralized administration system in which the staff is responsible for all aspects of unit functioning.
British thermal unit (BTU) a unit of heat formerly widely used, being the amount necessary to raise the temperature of 1 pound of water from 39° to 40°F., equal to approximately 252 calories.
CH50 unit the amount of complement that will lyse 50 per cent of a standard preparation of sheep red blood cells coated with antisheep erythrocyte antibody.
continuing education unit (CEU) a unit of credit for educational offerings given to professional persons, determined by a professional organization according to a mathematical formula after a thorough review of the program of study, the qualifications of the instructors, and the program objectives.
critical care unit intensive care unit.
electrostatic u's (esu) that system of units that is based on the fundamental definition of a unit charge as one that will repel a similar charge with a force of 1 dyne when the two charges are 1 cm apart in a vacuum.
environmental control unit a computerized system that allows the handicapped individual to operate several different appliances using a keyboard or other input device.
heat unit the amount of heat energy that is produced by one kVp (kilovolt peak) and one mA (milliampere) for one second with single phase, full wave rectified radiographic equipment.
Hounsfield unit an arbitrary unit of x-ray attenuation used for CT scans. Each voxel is assigned a value on a scale in which air has a value of −1000; water, 0; and compact bone, +1000.
intensive care unit see intensive care unit.
International unit (IU)
1. a unit of enzyme activity equal to the amount of enzyme that catalyzes the conversion of one micromole of substrate or coenzyme per minute under specified conditions (temperature, pH, and substrate concentration) of the assay method. Abbreviated U.
2. any of several arbitrary units that have been adopted by international bodies to express the quantities of certain vitamins (A, C, D, and thiamine hydrochloride), hormones (androgen, chorionic gonadotropin, estradiol benzoate, estrone, insulin, progesterone, and prolactin), and drugs (digitalis and penicillin).
Kienböck's unit a unit of x-ray exposure equal to 0.1 erythema dose; symbol X.
motor unit the unit of motor activity formed by a motor nerve cell and its many innervated muscle fibers.
postanesthesia care unit (PACU) a specialty unit in a hospital for giving postanesthesia care (care of patients recovering from anesthesia and intravenous sedation); formerly called recovery room.
radiologic u's units used to measure radiation, including roentgens, rads, rems, and curies.
u's of service (UOS)
1. the number of procedures done by a department.
2. individuals or groups of individuals who are the recipients of nursing care.
short procedures unit (short term care unit) a nursing unit where patients are briefly cared for following a medical or surgical procedure and are then discharged without spending the night.
SI unit any unit of the International System of units (the metric system); see also si units.
step-down unit a nursing unit designated to provide care for patients who are stable enough to be discharged from the intensive care unit but are not yet ready to be cared for on a medical-surgical unit.
Svedberg unit (S) a unit equal to 10−13 second used for expressing sedimentation coefficients of macromolecules.
Svedberg flotation unit (Sf) a unit equal to 10−13 second used for expressing negative sedimentation coefficients of macromolecules that float rather than sink in a centrifuge, e.g., lipoproteins.
terminal respiratory unit the functional unit of the lung, including a respiratory bronchiole, alveolar ducts and sacs, and alveoli; called also primary lobule of lung and primary respiratory lobule.
USP unit one used in the United States Pharmacopeia for expressing potency of drugs and other preparations.

Brit·ish ther·mal u·nit (BTU),

the quantity of heat required to raise 1 lb of water from 3.9°C to 4.4°C; equal to 251.996 calorie or 1055.056 J.
Synonym(s): unit of heat (2)

British Thermal Unit

An obsolete unit, equal to 252 calories or 1055 Joules, for the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.

British Thermal Unit

A unit of energy–equal to 252 calories or 1055 Joules needed to raise one pound of water by one degree Fahrenheit

Brit·ish ther·mal u·nit

(BTU) (brit'ish thĕr'măl yū'nit)
The quantity of heat required to raise 1 pound of water from 3.9-4.4°C; equal to 251.996 calories or to 1055.056 joules.
References in periodicals archive ?
China currently pays $US15 per million British thermal units (BTU) for Australian LNG, according to the Australian Financial Review.
According to Globes, Edeltech plans to bid in the Cypriot tender and wants to buy gas from Tamar at $7 per million British Thermal Units. The cost of transporting gas from Israel to Cyprus is estimated at $2.50 per million British Thermal Units, giving a final price of around $10 per million British Thermal Units, compared with the current price of $18 per million British Thermal Units for LNG.
An agreement came out of the negotiations with France's Total and GDF Suez at the end of 2012 stipulating the sale of LNG at $7.21 per million British thermal units (mmBtu), Ahmed Dares was quoted as saying in state-run newspaper The previous price of $1.50 per mmBtu will hold until the end of 2013, the paper said.
Among the studied options is over USD 3 (EUR 2.36) per million British Thermal Units (BTU) for the current gas production and USD 6 per million BTU for future gas from unconventional deposits.
Henry Hub natural gas prices added 1.1 cents to $2.453 per million British thermal units.
Energy Information Administration publications are expressed predominately in units that historically have been used in the United States, such as British thermal units, barrels, cubic feet, and short tons.
Summary: PERTH - Asian spot prices of liquefied natural gas (LNG) held steady between $9.50 and $10.00 per million British thermal units in a quiet market ahead of the New Year holiday, analysts and traders said on Friday
The government will now charge Rs 95 per one million British thermal units (MMBTU) for the consumption of zero to 100 cubic metres of gas, Rs 190 per MMBTU for 100 to 300 cubic metres of gas, Rs 800 per MMBTU for 300 to 500 cubic metres of gas and Rs 1,006 per MMBTU for 500 and above cubic metres of gas per month.
The 16th International Conference on Liquefied Natural Gas (LNG -16) and the 10th Forum of Gas Exporting Countries (FGEC) is being held in a context marked by sharp decline of LNG prices, sliding down from $12 to $4 per mBtu (million British thermal units), chiefly because of oversupply in world gas market, experts attending the conference said.
According to DOE, one million British thermal units (Btus) of natural gas will cost an estimated $12.18 this year--while the same amount of electricity will cost families more than twice as much ($31.21) on average.
primaries creating aluminum from raw materials would save 1 trillion British thermal units of energy per year.
The MRF uses an energy recovery ventilation system that recycles British thermal units to heat the building, recycling two-thirds to three-quarters of its energy.

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