305.20 334.ten 314.00 292.C [US /h] 184.00 166.00 224.40 214.ten 289.60 271.50 343.60 328.20 396.ten

305.20 334.ten 314.00 292.C [US /h] 184.00 166.00 224.40 214.ten 289.60 271.50 343.60 328.20 396.ten 1.04 0.36 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 124.90 72.95 34.91 107..-21.68 40.46 67.96 40.00 116.30 40.00 112.90 40.00 105.00 -140.00 -50.00 25.00 25.00 40.00 25.00 50.00 25.00 50.00 25.00 50.00 -157.The throttling valve (in between
305.20 334.10 314.00 292.C [US /h] 184.00 166.00 224.40 214.10 289.60 271.50 343.60 328.20 396.10 1.04 0.36 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 124.90 72.95 34.91 107..-21.68 40.46 67.96 40.00 116.30 40.00 112.90 40.00 105.00 -140.00 -50.00 25.00 25.00 40.00 25.00 50.00 25.00 50.00 25.00 50.00 -157.The throttling valve (in between points 3 and four) reduces pressure from 58.50 bar to two.53 bar. In [20], the temperature was decreased from -143.0 C to -152.34 C with a temperature distinction of -9.34 C. The temperature -152.34 C was not achieved in the energy balance carried out herein. In scientific literature, natural gas liquefaction processes use input temperatures about -160 C and decrease the valve temperature of 0.five to 3 C [36,37]. Herein, the input and output temperatures of AS-0141 CDK all-natural gas in the throttling valve are -155 C and -157.35 C, respectively. The mass flow price of stream at point 5 ought to be gaseous nitrogen. The mass composition of nitrogen within all-natural gas is 5.65 , which corresponds to 26.09 kg/h out of 461.78 kg/h. Consequently, the mass flow rate viewed as herein is 26.09 kg/h (rather of 45.12 kg/h viewed as by [20]). The correction of your mass flow rate of nitrogen at point five will alter the mass flow price of liquefied natural gas at point 35 as well as the mass flow rate from the system with refrigerant at points five, 10, and 14. Some temperatures have been recalculated contemplating the heat exchangers as adiabatic, for instance T11, T14, and T16. The minimum pinch point temperatures in the heat exchangers have been 0.5, 7.9, and 0.7 C for HE-1, HE-2, and HE-3, respectively. The advantage of exergy analysis is the fact that when there are actually issues with the heat exchanger pinch point, the value of exergy destruction generated is damaging, which can be inconsistent. This behavior was reported by [30]. The exergy rates have been calculated considering physical exergy, as there is absolutely no chemical reaction involved. The energy created in Nimbolide web expanders 1 and two is 66.39 kW and 29.03 kW at points 36 and 37, respectively. The international energy made within the expanders is 95.42 kW at point 38. The power consumed in refrigerant compressors 1, 2, three, and 4 is 38.39 kW, 98.37 kW, 93.87 kW, and 83.70 kW, respectively. The total power consumed is 314.3 kW, because the two expanders generate power, plus the net power consumed is 218.9 kW. The ratio of power consumed is 69.64 . The heat prices of air coolers 1, 2, 3, and four are 36.28 kW, 99.81 kW, 96.35 kW, and 87.48 kW, respectively. These outcomes are comparable to [20].Energies 2021, 14,12 ofThe expense of air coolers is calculated determined by their region and evaluated by their performances, i.e., heat price, Log Mean Temperature Difference (LMTD), and air volumetric flow price. Table 5 shows the heat rate, LMTD, air volumetric flow price, area, energy consumed, and cost of all air coolers.Table 5. Functionality data and price of air coolers. Air Cooler 1 2 three four Q [kW] 36.28 99.81 96.35 87.48 LMTD [ C] 20.81 34.52 33.40 30.78 V [m3 /s] 2.036 three.360 3.244 two..A [m2 ] 9.176 15.220 15.180 14.W [kW] 0.6788 1.1200 1.0810 0.Z [US ] 11,884 14,550 14,537 14,The input air temperature in the air cooler is 25 C. The input refrigerant temperatures are 67.96 C, 116.3 C, 112.85 C, and 104.99 C for AC1, 2, three, and 4, respectively. All output refrigerant temperatures are 40 C. Inside the present work, the output air temperature was assumed as 40 C for AC1 and C for AC2, three, and 4, as a consequence of the lower input refrigerant temperature of AC1. These 50 temperatures are utilised for the.