【Daily Question】20150706 – Knowledge about economizers (2 wealth points for replying, +3 wealth points for getting it right)
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This post was last edited by dongjiang1001 on 2015-7-13 09:15. To increase popularity in the boiler area and meet the requirements of the region, the \"One Question per Day\" activity is launched to foster technical exchanges, liven up the atmosphere, and offer rewards; all members are welcome to participate actively. The economizer has two functions, namely: ( ) and ( ). Answer key: Supply water temperature ； Reduce flue gas temperature. Reply in the comments with the answer you think is correct (for fill-in-the-blank questions, 1 extra point for each correct answer; 3 extra points if all answers are correct). 1. Participating in answering questions + 2 wealth points (set to automatically add wealth) ； 2. No additional points will be given for incorrect answers; the correct answer will be provided in the comments ； 3. +3 points to wealth if the reply is correct ； 4. When responding, provide a detailed explanation and analysis of the question or answer; depending on the quality of the response, an additional reward of 3 to 15 points in wealth will be given ； 5. Replies with correct answers and accurate explanations will be designated as the best reply (best assistance). Note: We will close this post after 72 hours to reveal the answers and explanations, as well as the best response (the best help).
The economizer serves two purposes: (the first is to raise the temperature of the feedwater; boiling economizers can also generate a small amount of steam) and (the second is to lower the temperature of the flue gases, recover the heat from them, improve the thermal efficiency of the boiler, and save fuel).
Correct answer: The economizer has two functions, namely: (raising the feedwater temperature) and (reducing the flue gas temperature).
1. Absorb the residual heat from flue gas, raise the boiler feed water temperature, lower the flue gas temperature, and improve the boiler’s thermal efficiency. 2. Reduce the thermal stress on the drum and extend its service life.
Reduce the flue gas exhaust temperature and improve the boiler’s operational efficiency
Absorbing waste heat reduces flue gas temperature and improves boiler efficiency.
The economizer has two functions: raising the temperature of the boiler feedwater and absorbing the waste heat from the flue gases.
(Raising the feedwater temperature) and (Lowering the flue gas temperature, recovering flue gas heat, improving the boiler’s thermal efficiency, and saving fuel)
The economizer serves two purposes: (energy savings) and (reducing the overall cost of the boiler while extending the lifespan of the steam drum).
Increase the boiler feedwater temperature and reduce the flue gas temperature
The economizer has two functions, namely: (reducing heat loss in the exhaust gases) and (raising the temperature of the water being heated).