305.20 334.10 314.00 292.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 (involving
305.20 334.10 314.00 292.C [US /h] 184.00 166.00 224.40 214.ten 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 (between points 3 and four) reduces stress from 58.50 bar to 2.53 bar. In [20], the temperature was decreased from -143.0 C to -152.34 C having a temperature difference of -9.34 C. The temperature -152.34 C was not accomplished inside the power balance carried out herein. In scientific literature, all-natural gas liquefaction processes use input temperatures about -160 C and minimize the valve temperature of 0.five to three C [36,37]. Herein, the input and output temperatures of natural gas within the throttling valve are -155 C and -157.35 C, respectively. The mass flow price of stream at point five must be gaseous nitrogen. The mass composition of nitrogen inside all-natural gas is 5.65 , which corresponds to 26.09 kg/h out of 461.78 kg/h. For that reason, the mass flow rate considered GS-626510 Cancer herein is 26.09 kg/h (alternatively of 45.12 kg/h regarded by [20]). The correction of your mass flow price of nitrogen at point five will transform the mass flow rate of liquefied organic gas at point 35 along with the mass flow rate in the system with refrigerant at points 5, 10, and 14. Some temperatures have been recalculated contemplating the heat exchangers as adiabatic, which include T11, T14, and T16. The minimum pinch point temperatures at the heat exchangers have been 0.five, 7.9, and 0.7 C for HE-1, HE-2, and HE-3, respectively. The benefit of exergy evaluation is the fact that when there are actually challenges using the heat exchanger pinch point, the value of exergy destruction generated is negative, which is inconsistent. This behavior was reported by [30]. The exergy rates had been calculated taking into consideration physical exergy, as there is absolutely no chemical reaction involved. The power created in expanders 1 and 2 is 66.39 kW and 29.03 kW at points 36 and 37, respectively. The worldwide AS-0141 Autophagy energy produced within the expanders is 95.42 kW at point 38. The power consumed in refrigerant compressors 1, 2, three, and four 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 make energy, and the net energy consumed is 218.9 kW. The ratio of energy consumed is 69.64 . The heat prices of air coolers 1, 2, three, and four are 36.28 kW, 99.81 kW, 96.35 kW, and 87.48 kW, respectively. These benefits are related to [20].Energies 2021, 14,12 ofThe cost 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 rate. Table five shows the heat rate, LMTD, air volumetric flow rate, location, power consumed, and price of all air coolers.Table 5. Performance information and price of air coolers. Air Cooler 1 2 3 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 three.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, 3, and four, respectively. All output refrigerant temperatures are 40 C. In the present work, the output air temperature was assumed as 40 C for AC1 and C for AC2, three, and 4, on account of the reduced input refrigerant temperature of AC1. These 50 temperatures are utilised for the.