Next Article in Journal
Operation Optimization of Multi-District Integrated Energy System Considering Flexible Demand Response of Electric and Thermal Loads
Previous Article in Journal
Voltage-Balancing Strategy for Three-Level Neutral Point Clamped Cascade Converter under Sequence Pulse Modulation
Previous Article in Special Issue
Exploitation of Mowed Grass from Green Areas by Means of Anaerobic Digestion: Effects of Grass Conservation Methods (Drying and Ensiling) on Biogas and Biomethane Yield
Open AccessArticle

Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine

1
Department of Energy Technology, School of Industrial Technology and Management (ITM), KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
2
Facultad de Ciencias y Tecnología (FCyT), Universidad Mayor de San Simón (UMSS), Cochabamba 2500, Bolivia
3
Biomass to Resources Group, Universidad Regional Amazónica Ikiam, Tena 150156, Ecuador
4
Building Energy and Environment Group, Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), Edifici GAIA (TR14), C/Rambla Sant Nebridi. 22, 08222 Terrassa, Barcelona, Spain
*
Author to whom correspondence should be addressed.
Energies 2019, 12(20), 3830; https://doi.org/10.3390/en12203830
Received: 29 July 2019 / Revised: 2 October 2019 / Accepted: 2 October 2019 / Published: 10 October 2019
(This article belongs to the Special Issue Production and Utilization of Biogas)
Trigeneration or combined cooling, heat and power (CCHP) systems fueled by raw biogas can be an interesting alternative for supplying electricity and thermal services in remote rural areas where biogas can be produced without requiring sophisticated equipment. In this sense, this study considers a performance analysis of a novel small-scale CCHP system where a biogas-fired, 5 kWel externally fired microturbine (EFMT), an absorption refrigeration system (ARS) and heat exchangers are integrated for supplying electricity, refrigeration and hot water demanded by Bolivian small dairy farms. The CCHP solution presents two cases, current and nominal states, in which experimental and design data of the EFMT performance were considered, respectively. The primary energy/exergy rate was used as a performance indicator. The proposed cases show better energy performances than those of reference fossil fuel-based energy solutions (where energy services are produced separately) allowing savings in primary energy utilization of up to 31%. Furthermore, improvements in electric efficiency of the EFMT and coefficient of performance (COP) of the ARS, identified as key variables of the system, allow primary energy savings of up to 37%. However, to achieve these values in real conditions, more research and development of the technologies involved is required, especially for the EFMT.
Keywords: combined cooling; heat and power; CCHP; trigeneration; dairy farm; refrigeration; efficiency; performance; externally fired microturbine combined cooling; heat and power; CCHP; trigeneration; dairy farm; refrigeration; efficiency; performance; externally fired microturbine
Show Figures

Graphical abstract

MDPI and ACS Style

Villarroel-Schneider, J.; Malmquist, A.; Araoz, J.A.; Martí-Herrero, J.; Martin, A. Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine. Energies 2019, 12, 3830.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop