Also, the best economic and environmental performances and the highest exergy efficiency take place at the lowest current density and highest fuel utilization factor equal to 4800 A/m 2 and 0.85, respectively. heptads effect evaporator system with the backward feed flow. The lowest unit cost and the highest exergy efficiency of multi-generation occur at the highest possible pressure ratio of the air compressor. The sensitivity analysis indicates that the system has a proper thermoeconomic performance within the range of solid oxide fuel cell outlet temperature between 745 and 765 ☌. The outcomes also reveal that employing the subsystems conduces to a decline in the environmental index and payback period of the whole system. However, they contribute to a 23.57% and 17.7% of the total cost rate and total exergy destruction of the system, respectively. The evaluations in a base case demonstrate that the five utilized subsystems bring about a 2.49 and 14.4% points enhancement in the exergy and energy efficiencies of the system, respectively, compared to the combined solid oxide fuel cell - gas turbine system. The residual heat of the exhaust gases and the waste heat of the supercritical CO 2 Brayton cycle in the heat rejection stage are respectively recovered in a domestic hot water heat exchanger and an LiCl-H 2O absorption refrigeration system which are responsible for the production of heating and cooling.
#Energy balance evaporator generator#
The waste heat of the solid oxide fuel cell - gas turbine is recovered by a recompression supercritical CO 2 Brayton cycle and a thermoelectric generator, and the total electrical power generated by the supercritical CO 2 Brayton cycle and thermoelectric generator is used as the input electricity in a proton exchange membrane electrolyzer to produce hydrogen. This pilot vacuum evaporator is thus a practical tool to simulate the behavior of dairy products in the concentration process with precise measurements and low feed quantities.In an attempt to recover waste heat from a system composed of a solid oxide fuel cell and gas turbine, a novel multi-generation system is proposed utilizing five different subsystems and investigated from energy, exergoeconomic, and environmental standpoints. Evaporation capacity was found to vary with heating power, ranging from 11.8 L.h-1 to 30.2 L.h-1 for heating power ranging from 13.5 kW to 27.0 kW respectively. Experiments chosen for study include the rate of evaporation by heat transfer and performing an energy balance on the unit. Energy consumption was 2357.0 kJ for 1.0 kg of evaporated water. Performing an Energy Balance and Measure of Heat Transfer on the Armfield Evaporator Unit William Strader CHPH 315 - MC01 Abstract: This study describes the experiments performed on the Armfield Evaporator unit. Mass and energy balance showed good correspondence between inlet and outlet flow, with a maximum error of less than 5% and 3%, respectively. Subsections marked with the asterisk are more detailed mathematical discussions which can be skipped by the first-time reader. This notebook is part of The Climate Laboratory by Brian E.
The one-dimensional energy balance model. The maximum flow rate was 46.0 L.h-1 and 55.0 L.h-1 for a heating power of 13.5 kW and 27.0 kW (maximum heating power), respectively. The one-dimensional energy balance model The Climate Laboratory. energy balance over water surfaces covered by oating ele-ments is a critical ingredient for any design and management of evaporation suppression from water reservoirs that will be analyzed in this study. Moreover, these flow rate limits change with heating power. It was shown that minimum and maximum flow rate values should be respected for an optimal utilization of the equipment. The temperature of the concentrate for each tube, the temperature of the condensate, the vacuum pressure, the temperature of the separator, and the output flow of the concentrated and condensed solutions were measured to achieve this.
0 kommentar(er)
