RESEARCH ARTICLE
Integration of biodiesel internal combustion engines and transcritical organic Rankine cycles for waste-heat recovery in small-scale applications
Luigi Falbo,
Diego Perrone,
Pietropaolo Morrone,
Angelo Algieri,
Luigi Falbo
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Search for more papers by this authorDiego Perrone
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Search for more papers by this authorPietropaolo Morrone
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Search for more papers by this authorCorresponding Author
Angelo Algieri
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Correspondence
Angelo Algieri, Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Via P. Bucci - Cubo 44C, 87036 Arcavacata di Rende (CS), Italy.
Email: [email protected]
Search for more papers by this authorLuigi Falbo,
Diego Perrone,
Pietropaolo Morrone,
Angelo Algieri,
Luigi Falbo
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Search for more papers by this authorDiego Perrone
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Search for more papers by this authorPietropaolo Morrone
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Search for more papers by this authorCorresponding Author
Angelo Algieri
Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Arcavacata di Rende, Italy
Correspondence
Angelo Algieri, Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, Via P. Bucci - Cubo 44C, 87036 Arcavacata di Rende (CS), Italy.
Email: [email protected]
Search for more papers by this authorSummary
The aim of the work is the analysis of a novel integrated energy system for small-scale combined heat and power (CHP) generation. The system consists of a topping biodiesel-fired internal combustion engine (ICE) and a bottoming transcritical organic Rankine cycle (TORC) for waste-heat recovery. Specifically, the engine exhaust gas provides energy to the TORC sub-system, while the energy contribution of the ICE cooling circuit assures low-temperature heat generation. Furthermore, a thermal energy storage (TES) unit for the exploitation of the thermal surplus and an auxiliary boiler are present. A mathematical model is developed to evaluate the main performances at full and partial load in terms of thermal and electric production, efficiency, fuel consumption, and primary energy saving. A preliminary analysis is carried out to find the proper organic working fluid for the TORC sub-system. Afterwards, the biodiesel ICE-TORC combined system is adopted to satisfy thermal and electric requests of a commercial centre. To this purpose, hourly energy balances are evaluated, and a techno-economic analysis is performed on an annual basis. The investigated system guarantees a 16.7% primary energy saving and an 8.4 years payback time.
Open Research
DATA AVAILABILITY STATEMENT
Data available on request from the authors.
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