overfire
To create too large a fire in a fireplace, furnace, firebox, etc.
Adjective
- Of a boiler, furnace, or other heating device: relating to components or other things that are located above the fire.
- In the interest of smoke abatement, overfire jets are now installed on thousands of commercial and industrial coal-fired furnaces. [...] The overfire jet is a device for providing turbulence and/or overfire air above...
- Volatile matter in the vapor form and carbon monoxide just above the bed must be fully mixed with overfire air to complete the combustion process. At low firing rates it is important to minimize the amount of overfire...
- The primary flame zone can be operated fuel rich to reduce oxygen concentration, then additional air can be added downstream. This overfire air provides oxygen to complete combustion of unburned fuel and oxidizes carbon...
Origin
From over- (prefix meaning ‘above, higher; excessively’) + fire.
Forms
Verb
- To create too large a fire in a fireplace, furnace, firebox, etc.
- I found that the Chapelon steamed almost too freely, because on a strange locomotive and road one usually tends to overfire a little through a natural lack of confidence. - 1961 February, ""Balmore"", “Driving and...
- Overfiring the appliance may cause a house fire. If a unit or chimney connector glows, you are overfiring. - 1985, Code of Federal Regulations: Commercial Practices […], Washington, D.C.: United States Government...
- We have so far concentrated on creosote fires as a source of elevated flue gas temperatures. But overfiring the stove or fireplace – building a large, hot fire – can also produce very high temperatures. - 1987...
Synonyms: overstoke
- To fire at a high (or excessively high) temperature.
- BUBBLES IN GLAZE may be caused by too heavy an application, or by severe underfiring or overfiring. [...] LOSS OF COLOR IN CHINA PAINTING is a result of overfiring or mixing too much medium with the paint. Be careful...
- At this point overfiring begins, as is shown particularly by the volume curve, which indicates decided bloating, so that at 1450°C the clay has about the same volume it had at 1050°C before vitrification took place. At...
- The principal criteria of the value of the clay as determined by burning are the overfiring temperature and the softening point. - 1922, H[einrich] Ries, W[illiam] S[hirley] Bayley [et al.], High-grade Clays of the...
Antonyms: underfire
- Of a cell or group of cells: to fire excessively.
- Geoffery Schultz, a student of [Ronald] Melzack, has recently conducted a study showing that visual hallucinations need not be caused by psychopathology but may result from the disruption of sensory input among patients...
Antonyms: underfire