Optimal Design and Operation of Distributed Low-Carbon Energy Technologies in Commercial Buildings

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Title: Optimal Design and Operation of Distributed Low-Carbon Energy Technologies in Commercial Buildings
Author(s): Acha Izquierdo, S
Mariaud, A
Shah, N
Markides, C
Item Type: Journal Article
Abstract: Commercial buildings are large energy consumers and opportunities exist to improve the way they produce and consume electricity, heating and cooling. If energy system integration is feasible, this can lead to significant reductions in energy consumption and emissions. In this context, this work expands on an existing integrated Technology Selection and Operation (TSO) optimisation model for distributed energy systems (DES). The model considers combined heat and power (CHP) and organic Rankine cycle (ORC) engines, absorption chillers, photovoltaic panels and batteries with the aim of guiding decision makers in making attractive investments that are technically feasible and environmentally sound. A retrofit case study of a UK food distribution centre is presented to showcase the benefits and trade-offs that integrated energy systems present by contrasting outcomes when different technologies are considered. Results show that the preferred investment options select a CHP coupled either to an ORC unit or to an absorption chiller. These solutions provide appealing internal rates of return of 28–30% with paybacks within 3.5–3.7 years, while also decarbonising the building by 95–96% (if green gas is used to power the site). Overall, the TSO model provides valuable insights allowing stakeholders to make well-informed decisions when evaluating complex integrated energy systems.
Publication Date: 1-Nov-2017
Date of Acceptance: 15-Oct-2017
URI: http://hdl.handle.net/10044/1/51913
DOI: https://dx.doi.org/10.1016/j.energy.2017.10.066
ISSN: 0360-5442
Publisher: Elsevier
Start Page: 578
End Page: 591
Journal / Book Title: Energy
Volume: 142
Copyright Statement: © 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Sainsbury's Supermarkets Ltd
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/L02442X/1
CEPSE_P57236
EP/P004709/1
Keywords: 0913 Mechanical Engineering
0915 Interdisciplinary Engineering
Energy
Publication Status: Published
Appears in Collections:Faculty of Engineering
Centre for Environmental Policy
Chemical Engineering
Faculty of Natural Sciences



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