Showing 1 - 10 of 19
In this paper, thermodynamic study of simple and regenerative gas turbine cycles is exhibited. Firstly, thermodynamic models for both cycles are defined; thermal efficiencies of both cycles are determined, the overall heat transfer coefficient through the heat exchanger is calculated in order to...
Persistent link: https://www.econbiz.de/10012044543
Most of the efforts to improve energy system configurations are directed towards the recovery of internal heat, which reduces the contribution of the external hot source and enhance system efficiency accordingly. This problem is strictly related to the synthesis of different components into...
Persistent link: https://www.econbiz.de/10010808666
Evaporative cooling technique, one of the most widely used methods, is essential to both energy conservation and environment protection. This contribution introduces a global optimization method for indirect evaporative cooling systems with coupled heat and mass transfer processes based on the...
Persistent link: https://www.econbiz.de/10010810338
Using a novel method that couples genetic algorithm (GA) with numerical simulation, the geometric configuration for a two-dimensional slotted fin has been optimized in this paper. The objective of optimization is to maximize the heat transfer capacity of slotted fin, and minimize the pressure...
Persistent link: https://www.econbiz.de/10010571905
performance and design parameters of these solar to thermal energy conversion systems. A detailed energy and exergy analysis is … carried out for evaluating the thermal and optical performance, exergy flows and losses as well as exergetic efficiency for a … conditions and the optimum values of the mass flow rate, the absorber plate area and the maximum exergy efficiency have been …
Persistent link: https://www.econbiz.de/10010803825
The depletion of non-renewable natural exergy resources (the thermo-ecological cost) has been accepted as the objective …
Persistent link: https://www.econbiz.de/10010807800
produce hot water and a reverse osmosis desalination unit to produce fresh water. Energy and exergy analyses and an …, component purchasing and environmental impact, and the system exergy efficiency. The total cost rate of the system is minimized … while the cycle exergy efficiency is maximized using an evolutionary algorithm. To provide insight, the Pareto frontier is …
Persistent link: https://www.econbiz.de/10010808686
In this paper, the optimization of a hybrid solid oxide fuel cell–gas turbine (SOFC–GT) power plant is presented. The plant layout is based on an internal reforming SOFC stack; it also consists of a radial gas turbine, centrifugal compressors and plate-fin heat exchangers. In the first part...
Persistent link: https://www.econbiz.de/10010809174
the worth of each product. Any energy, including enthalpy or exergy, can be applied to the wonergy and be evaluated by … energy, including enthalpy and exergy, were applied for cost allocation. Enthalpy, exergy, and profit were applied for cost … optimization. Enthalpy and exergy were applied for cost analysis. Exergy is generally recognized as the most reasonable criterion …
Persistent link: https://www.econbiz.de/10010811190
In this paper, thermoeconomic optimization and exergy analysis are applied to a CO2/NH3 cascade refrigeration cycle … is the total annual cost of the system which includes costs of input exergy to the system and annualized capital cost of … the system. Input exergy to the system is the electricity consumption of compressors and fans, and the capital cost …
Persistent link: https://www.econbiz.de/10010811801