scholarly journals Energetic Investigation and Economic Feasibility for a University Campus in Romania towards Becoming an Energy Supplier

2021 ◽  
Author(s):  
Ali Al Dabbas ◽  
Laith Al-Hyari ◽  
Ahmad D. M. Al Awana ◽  
Mohammad Fawaier
Keyword(s):  
Internal Combustion Engine ◽  
Net Present Value ◽  
Combustion Engine ◽  
Organic Rankine Cycle ◽  
District Heating ◽  
Rankine Cycle ◽  
Internal Combustion ◽  
Economic Feasibility ◽  
Energy Supply System ◽  
The University

This research investigates and evaluates the University Politehnica of Bucharest (UPB) possibilities to become an energy self-supplying by building up its own power plant and becoming an energy distributor. The campus has already been connected to the national natural gas supplying pipe and the local district heating and electrical network.A set of criteria was used to evaluate the feasibility of this project. Technical, financial, and environmental considerations were taken into account to determine the most suitable solution. The feasibility study assumed three proposals of an energy supply system considered for the university buildings / campus. Gas-fired heating plant, gas-fired Internal Combustion Engine cogeneration plant and gas fired Internal Combustion Engine for cogeneration with an Organic Rankine Cycle ORC.The details of each proposal were discussed to obtain the optimum solution. Elaborate. It was found from a financial and environmental perspective that the most feasible project is gas-fired Internal Combustion Engine cogeneration, considering profit revenue from selling / exporting power to the domestic electricity grid. And the Net Present Value was around one million euros for 15 years life.

scholarly journals Increasing the Energy Efficiency of an Internal Combustion Engine for Ship Propulsion with Bottom ORCs

2020 ◽  
Vol 10 (19) ◽  
pp. 6919
Author(s):  
Melchiorre Casisi ◽  
Piero Pinamonti ◽  
Mauro Reini
Keyword(s):  
Internal Combustion Engine ◽  
Energy Recovery ◽  
Combustion Engine ◽  
Cooling Water ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Internal Combustion ◽  
Ship Propulsion ◽  
Payback Time ◽  
Temperature Levels

The study examines the option of adding a bottom Organic Rankine Cycle (ORC) for energy recovery from an internal combustion engine (ICE) for ship propulsion. In fact, energy recovery from the exhaust gas normally rejected to the atmosphere and eventually from the cooling water circuit (usually rejected to the sea) can significantly reduce the fuel consumption of a naval ICE during its operation. In the paper, different possible bottom ORC configurations are considered and simulated using the Aspen® code. Different working fluids are taken into account, jointly with regenerative and two-temperature levels designs. The energy recovery allowed by each solution is evaluated for different engine load, allowing the identification of the most suitable ORC configuration. For the selected case, the preliminary design of the main heat exchangers is carried out and the off-design performance of the whole combined propulsion plant (ICE + ORC) is evaluated, leading to a preliminary analysis of cost saving during normal ship operation. The results of this analysis show an increase in power output of about 10% and an expected Payback Time of less than 6 years.

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