Thermodynamic analyses of different scenarios in a CCHP system with micro turbine – Absorption chiller, and heat exchanger. (15th October 2019)

• Record Type: Journal Article
• Authors: Mirzaee, Mojtaba; Zare, Reza; Sadeghzadeh, Milad; Maddah, Heydar; Ahmadi, Mohammad Hossein; Acıkkalp, Emin; Chen, Lingen
• Is Part Of: Energy conversion and management. Volume 198(2019)
• Publication Date: 2019-10-15
• Subjects: Cogeneration -- Microturbine -- Energy efficiency -- Used energy -- Distributed generation -- Utility fuel ratio; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2019.111919
• Languages: English
• ISSNs: 0196-8904

Abstract

Highlights: A combined cooling, heating and power system is modeled. It includes a gas turbine, absorption chillers, boilers, and heat exchangers. 9 scenarios are considered to analyze and evaluate system in various conditions. Energy efficiency, used energy, utility and utility fuel ratio are calculated. Abstract: Distributed generation as a viable solution to the energy crisis has gained popularity in recent years due to reduced transmission losses and improved efficiency. In this study, nine scenarios are considered to analyze and evaluate a cogeneration system in various conditions. The cogeneration system that includes a gas turbine, absorption chillers, boilers, and heat exchangers is modeled in EES software. The system is studied in multiple scenarios. Values of energy efficiency (EE), used energy (UE), and utility fuel ratio (UFR) are calculated to assess the system. In addition, the amount of CO2 production is also investigated for each of the scenarios. It is found that the system used in scenario No. 5 which consists of two absorption chillers installed in series, with UFR of 45325.50 kJ/kg has the optimum performance in terms of simultaneous electricity and cooling generation. For electricity and heating generation, scenario No. 7 in which heat can be completely recovered, with UFR of 39541.90 kJ/kg is the optimum configuration. It is monitored that scenario No. 1 and scenario No. 6 have the highest amount of carbon dioxide production among the studied scenarios, 88.18 kg/s.