Multiobjective Synthesis of a Polygeneration System for a Residential Building Integrating Renewable Energy and Electrical and Thermal Energy Storage

Pinto, Edwin S.; Serra, Luis M.

doi:10.18086/eurosun2018.11.02

Cited by 2 publications

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“…Among them, technologies driven by renewable energies play a key role in the design of sustainable energy supply systems for residential buildings. 11,12 Moreover, they can cover multiple energy demands directly (eg, electricity from photovoltaic or wind turbines, or heat from solar thermal collectors or biomass boilers) or indirectly by coupling absorption and/or mechanical heat pumps. [13][14][15] Nevertheless, nondispatchable energy technologies, such as wind or solar energy, are not able of covering alone in a reasonable and competitive way the full demand of energy services of buildings.…”

Section: Introductionmentioning

confidence: 99%

“…22 To do this, a multiobjective optimization considering both economic and environmental aspects was applied to several multifamily residential buildings located in Zaragoza (Spain) to find different trade-off solutions. Note that, although several works have applied multiobjective optimization considering those aspects, [24][25][26] it is the first time that this kind of analysis is made to analyse the ability of regulation, more specifically the current Spanish self-consumption regulation as a case study to promote the feasible reduction of greenhouse emissions at the path required by the European Union. Therefore, the obtained solutions of this work could be considered as a starting point for different stakeholders for the design of energy supply systems for residential buildings in Spain, which should consider the legal restrictions to achieve the key targets defined by the European Union.…”

Section: Introductionmentioning

confidence: 99%

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Design of affordable sustainable energy supply systems for residential buildings: A case study

Pinto

Serra

Lázaro

2022

Intl J of Energy Research

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Summary The residential sector plays an important role to mitigate climate change due to its high energy consumption. Polygeneration systems are a suitable alternative enabling efficient use of natural resources with low environmental impact. However, their deployment depends, among other factors, on the economic cost and the legal restrictions. This work analyses the potential reduction of greenhouse gases emissions, expressed in CO2‐equivalent emissions ()CO2italiceq, in residential buildings installing polygeneration systems and considering the current Spanish self‐consumption regulation. This is achieved through a multiobjective optimization, applying a Mixed Integer Linear Programming model, considering economic, environmental and legal aspects. Obtained results provide interesting replicable lessons, and show the interest of collective installations, in which remarkable CO2italiceq emissions reductions, above 65% with respect to conventional systems, can be achieved at an affordable cost. Technologies such as photovoltaic, reversible heat pumps, biomass and thermal energy storage are competitive when properly integrated. Furthermore, the sale of renewable electricity to the grid under a net‐billing scheme, with suitable electricity sale prices, is an appropriate approach, aligned with the European climate and energy policy. Nevertheless, the current Spanish self‐consumption regulation is mostly appropriate for small‐medium size residential buildings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of affordable sustainable energy supply systems for residential buildings: A case study

Pinto

Serra

Lázaro

2022

Intl J of Energy Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…photovoltaic panels [PV], solar thermal collectors [ST], hybrid photovoltaic/thermal, wind turbines [WT], among others) providing higher flexibility and diversification as well as environmental benefits, also play a key role in the design of sustainable energy supply systems for residential buildings. [14][15][16] They can cover multiple energy demands directly (e.g. electricity from PV or WT, or heat from ST) or indirectly by coupling absorption and/or mechanical HP.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the design of polygeneration systems for the residential sector under different self‐consumption regulations

2020

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Polygeneration systems enable natural resources to be exploited efficiently, decreasing CO 2 emissions and achieving economic savings relative to the conventional separate production. However, their economic feasibility depends on the legal framework. Preliminary design of polygeneration systems for the residential sector based on the last Spanish self-consumption regulations RD 900/2015 and RD 244/2019 was carried out in Zaragoza, Spain. Both regulations were applied to individual and collective installations. Several technologies, appropriate for the energy supply to residential buildings, for example, photovoltaics, wind turbines, solar thermal collectors, microcogeneration engines, heat pump, gas boiler, absorption chiller, and thermal and electric energy storage were considered candidate technologies for the polygeneration system. A mixed integer linear programming model was developed to minimize the total annual cost of polygeneration systems. Scenarios with and without electricity sale were considered. CO 2 emissions were also calculated to estimate the environmental impact. Results show that RD 900/2015 discourages the investment in self-consumption systems whereas the RD 244/2019 encourages them, especially in renewable energy technologies. Moreover, in economic terms, it is more profitable to invest in collective self-consumption installations over individual installations. However, this does not necessarily represent a significant reduction of CO 2 emissions with respect to individual installations since the natural gas consumption tends to increase as its unit price decreases because of the increase of its consumption level. Thus, more appropriate pricing of natural gas in residential sector, in which its cost would not be reduced when increasing its consumption, would be required to achieve significant CO 2 emissions reduction. In all cases, the photovoltaic panels (PV) are competitive and profitable without subsidies in self-consumption schemes and the reversible heat pump (HP) played an important role for the CO 2 emissions reduction. In a horizon to achieve zero CO 2 emissions, the net metering scheme could be an interesting and profitable alternative to be considered.

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Multiobjective Synthesis of a Polygeneration System for a Residential Building Integrating Renewable Energy and Electrical and Thermal Energy Storage

Cited by 2 publications

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Design of affordable sustainable energy supply systems for residential buildings: A case study

Design of affordable sustainable energy supply systems for residential buildings: A case study

Optimization of the design of polygeneration systems for the residential sector under different self‐consumption regulations

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