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| Q. |
Which of the following is calculated by flue gas analysis? |
| A. | amount of air used in combustion |
| B. | rate of combustion |
| C. | time required for combustion |
| D. | amount of air present after combustion |
| Answer» A. amount of air used in combustion | |
| Explanation: the only practical way for determining the amount of air used in furnace is to analyse the flue gas for the constituents co2, co an o2. the control of air is by means of dampers. | |
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