ghd hair straightener Austraila Heat exchanger ana

SHOES070

Heat exchanger analysis and economic analysis Yong

Best price on the parameters of heat exchanger can be seen, when fuel prices rise, the larger heat transfer area should be used. With fuel prices, P. Increased rapidly, but the modest increase in t * c2. For example, when C from 200 yuan / t,, NTU increased from 1.95 'to 2.35, A. From 216.67m. Increases to 261.1lm. , From 9.65 yuan / h increase to 2o. 84 yuan / h, an increase of 11.19 yuan / h if the time is 7200 hours of work, the annual cost can be made more than 8 million. Po analysis and thermal heat exchanger Economic Analysis 27 Figure 7 is the best heat transfer coefficient on the parameters. K increases, NTU. Increased, but A. Change is not monotonous. In a smaller value, A. K increases slightly with the increase, and when K is large, A with K increasing. When K increases, P. Also increased,Direct reduction of solid fuel gasification technology Study _3464, but not too drastically increased. Figure 8 into the heat exchanger for the flue gas temperature, the optimum parameters are increased,ghd hair straightener Austraila,CRPED software and its application _3088, especially in economic efficiency is even more evident. The greater the investment costs of heat exchanger,Edible paper production technology and use _1957, the smaller the cost, NTU. , A. And tc reduced accordingly, which may equation (17) shows. When the furnace using different fuels, as fuel prices, heat, excess air ratio were different, so the optimal parameters of heat exchanger is more complicated. Figure 9 for different economic analysis of fuel heat exchanger, in which heavy oil coke oven gas, coal and natural gas heat, respectively 40195KJ/kg ~ 16750KJ/Nm. . 29308KJ/kg and 33500KJ/Nm. , The price of 200 yuan / t,MBT Shoes, 0.10 元 / Nm. , 190 yuan / t and 0.30 yuan / Nm. . Excess air coefficient is taken as 1.2. Shows the different size of the fuel when the heat exchanger, air preheat temperature and the economic benefits are different. In short, the best heat transfer units and the best heat transfer area and the best preheating temperature should be based on fuel type, price,New Style MBT Shoes, heat transfer coefficient, gas inlet temperature and the heat exchanger into account investment and to equation (17) to obtain the maximum value to calculate the reference He1A, Heat. 】. TJan8r. 1977f99: 374AInt. LHeatMassTransfer, 1978} 21 | 655 Guo-yuan, and Engineering Thermodynamics Engineers. L pull out of social science,】 988 Wei Ni are summarized. HEAT, 19845t387-389. Ning of equality. Section marrow principle. Hydraulic power a small boat community. 1985F. v ~ nsR. BEnemy, 1980; 5 (Blake 9): 8O5-821 (; aggioliRAet-Em ~ ergy ・ 1980'5 (8-9); 823-837 Mei Ying Hu took heat transformer design manual. Petroleum Industry Press, 1981 Wu Yi Lin et . industrial furnaces. (1988), 4:3 Pu 37RaTItZ.For pit llIhrW convex, (1956); 22:1 EXERGICTHERMoECONoMICANALYSISOFHEATEXCHANGERSHanXiaobang (BEIJINGUNIVERSITYOFSCIENCEANDTECHNOLOGY) ABSTRACTHeatexergylossandexergyetficiencyotheat.exchange ~ areanalyzed.Theresultsshowthatinordertoobtainhigherexergyefficiencynumberoftransferunh (NTU) 8rcapacitanceratioshouldbeselectedcarefullyfortheyhaveoptimumvalues.Thermoeconomicoptimumca; cuLationsforheatexchangersshowthatoptimumparametersofheatexchangersarerelatedtofuel8oi \. KEYWORDS: HeatExcchanger; Exergy; Thermoeconomics