| 释义 |
bomb calorimeter
bomb calorimeter n (Chemistry) chem a device for determining heats of combustion by igniting a sample in a high pressure of oxygen in a sealed vessel and measuring the resulting rise in temperature: used for measuring the calorific value of foods Thesaurus| Noun | 1. | bomb calorimeter - strong sealed vessel for measuring heat of combustionbombcalorimeter - a measuring instrument that determines quantities of heat |
bomb calorimeter
bomb calorimeter[′bäm kal·ə′rim·əd·ər] (engineering) A calorimeter designed with a strong-walled container constructed of a corrosion-resistant alloy, called the bomb, immersed in about 2.5 liters of water in a metal container; the sample, usually an organic compound, is ignited by electricity, and the heat generated is measured. bomb calorimeter
bomb cal·o·rim·e·teran instrument for determining the potential energy of organic substances, including those in foods. It consists of a hollow steel container, lined with platinum and filled with pure oxygen, into which a weighed quantity of substance is placed and ignited with an electric fuse; the heat produced is absorbed by water surrounding the bomb and, from the rise in temperature, the calories liberated are calculated.bomb calorimeter A constant volume device which measures the heat released or absorbed by a substance during a chemical reaction, allowing the calorie content of the substance to be calculated.bomb cal·o·rim·e·ter (bom kal'ŏr-im'ĕ-tĕr) An instrument for determining the potential energy of organic substances, including those in foods. It consists of a hollow steel container, lined with platinum and filled with pure oxygen, into which a weighed quantity of substance is placed and ignited with an electric fuse; the heat produced is absorbed by water surrounding the bomb and, from the rise in temperature, the calories liberated are calculated. bomb calorimeter A small insulated chamber in which a carefully weighed sample of food can be burnt and the amount of heat derived from the combustion calculated from the measured rise in temperature. The device is used to measure the calorific value of various foodstuffs. See also CALORIE.bomb calorimeter a CALORIMETER in the form of a thick-walled container in which organic material is ignited by electricity, burned, and the heat generated measured. The instrument is used to estimate the energy content of materials per unit weight.bomb calorimeter
Synonyms for bomb calorimeternoun strong sealed vessel for measuring heat of combustionSynonymsRelated Words |