Total hydrocarbons definition

Total hydrocarbons. (THC) means the sum of all volatile compounds measurable by a flame ionization detector (FID).
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Total hydrocarbons. (THC) means all volatile compounds measurable by a flame ionization detector (FID).
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Total hydrocarbons or ‘THC’ means the total hydrocarbons emitted from the tailpipe;
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Examples of Total hydrocarbons in a sentence

  • Total hydrocarbons: 0.41 grams per mile, except natural gas, which has no standard.

  • Total hydrocarbons are presented on an as propane basis.c Values estimated as 50 times the controlled SRU emissions factor.

  • Reserved](2) Exhaust emissions from 2001 and later model year light-duty truck 3’sshall not exceed the following standards at full useful life:(i) Total hydrocarbons: 0.80 grams per mile except natural gas fueled vehicles which have no total hydrocarbonstandard.(ii) Non-methane hydrocarbons: 0.46 grams per mile.(iii) Carbon monoxide: 6.4 grams per mile.(iv) Oxides of nitrogen: 0.98 grams per mile.(v) Particulate matter: 0.10 grams per mile.(b) Supplemental exhaust emissions.

  • Reserved](2) Exhaust emissions shall notexceed the following standards at full useful life:(i) Total hydrocarbons: 0.80 grams per mile except natural gas fuel which hasno total hydrocarbon standard.(ii) Non-methane hydrocarbons: 0.56 grams per mile.(iii) Carbon monoxide: 7.3 grams permile.(iv) Oxides of nitrogen: 1.53 grams per mile.(v) Particulate matter: 0.12 grams permile.(b) Supplemental exhaust emissions.

  • Emissions Factors for Sulfur Recovery Plants CAS No. Compound NameNote: lb/MMBtu = pounds per million British thermal units; lb/lton = pounds per long tona Emissions factor in pounds of HAP per long-ton of sulfur produced.b Total hydrocarbons may be used as a surrogate for VOC.


More Definitions of Total hydrocarbons

Total hydrocarbons means the total mass of open chain and cyclic hydrocarbon molecules, as measured under the test procedures incorporated in this Article.
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Total hydrocarbons means the combined mass of organic compounds measured by EPA Method 25A as propane for gasoline- or LPG-fired engines, and for gaseous fuel-fired units, the sum of C1 through C6+ alkanes and alkenes determined according to EPA Method 18 or extractive FTIR methods. For the purposes of compliance with the emissions standards, THC does not include formaldehyde or other oxygenated hydrocarbons” the specified procedure for measuring total hydrocarbon, expressed as a hydrocarbon with a hydrogen-to-carbon mass ratio of 1.85:1. The total hydrocarbons definition in the proposed rule is expressed as a hydrocarbon with a hydrogen to carbon mass ratio of 1.85. INGAA is not aware of a hydrocarbon or associated measurement standard with a H:C mass ratio of 1.85. Methane is the hydrocarbon with the highest hydrogen to carbon ratio and the H:C mass ratio is 4:12 or 0.33. If EPA retains the total hydrocarbons definition in the Proposed Rule, then an explanation of the H:C mass ratio should be provided.
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Total hydrocarbons. (THC) means all volatile compounds measurable by a Flame Ionization Detector (FID).
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Total hydrocarbons means the organic compounds in the exit gas from a sewage sludge incinerator stack measured using a flame ionization detection instrument referenced to propane.
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Total hydrocarbons means the total mass of open chain and cyclic hydrocarbon molecules.
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Total hydrocarbons. (THC) means the sum of all volatile compounds measurable by a flame ionization detector (FID). 1.2.31. "Traceable" means the ability to relate a measurement or reading through an unbroken chain of comparisons to a known and commonly agreed standard." 1.2.32. "Transformation time" means the time difference between a change of concentration or flow (t0) at the reference point and a system response of 50 % of the final reading (t50). 1.2.33. "Type of analyser", also referred to as "analyser type" means a group of analysers produced by the same manufacturer that apply an identical principle to determine the concentration of one specific gaseous component or the number of particles. 1.2.34 "Type of exhaust mass flow meter" means a group of exhaust mass flow meters produced by the same manufacturer that share a similar tube inner diameter and function on an identical principle to determine the mass flow rate of the exhaust gas. 1.2.35 "Validation" means the process of evaluating the correct installation and functionality of a Portable Emissions Measurement System and the correctness of exhaust mass flow rate measurements as obtained from one or multiple non-traceable exhaust mass flow meters or as calculated from sensors or ECU signals. 1.2.36 "Verification" means the process of evaluating whether the measured or calculated output of an analyser, flow-measuring instrument, sensor or signal agrees with a reference signal within one or more predetermined thresholds for acceptance. 1.2.37. "Zero" means the calibration of an analyser, flow-measuring instrument or sensor so that it gives an accurate response to a zero signal. 1.2.38. "Zero response" means the mean response to a zero signal over a time interval of at least 30s. 1.2.39. "Zero response drift" means the difference between the mean response to a zero signal and the actual zero signal that is measured over a defined time period after an analyser, flow-measuring instrument or sensor has been accurately zero calibrated. 1.2.40 "Off-vehicle charging hybrid electric vehicle" (OVC-HEV) means a hybrid electric vehicle that can be charged from an external source." 1.2.41. "Not off-vehicle charging hybrid electric vehicle" (NOVC- HEV) means a vehicle with at least two different energy converters and two different energy storage systems that are used for the purpose of vehicle propulsion and that cannot be charged from an external source.
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Total hydrocarbons. (THC) means the sum of all...
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