scholarly journals An energy-economic analysis of real-world hybrid building energy systems

2021 ◽  
Vol 2042 (1) ◽  
pp. 012095
Author(s):  
Parantapa Sawant ◽  
Christian Braasch ◽  
Manuel Koch ◽  
Adrian Bürger ◽  
Sonja Kallio
Keyword(s):  
Control Strategies ◽  
Energy Systems ◽  
Building Energy ◽  
Primary Energy ◽  
Economic Feasibility ◽  
Data Sets ◽  
Hybrid Energy ◽  
Operation Conditions ◽  
Energy Factors ◽  
Building Energy Systems

Abstract A coordinated operation of decentralised micro-scale hybrid energy systems within a locally managed network such as a district or neighbourhood will play a significant role in the sector-coupled energy grid of the future. A quantitative analysis of the effects of the primary energy factors, energy conversion efficiencies, load profiles, and control strategies on their energy-economic balance can aid in identifying important trends concerning their deployment within such a network. In this contribution, an analysis of the operational data from five energy laboratories in the trinational Upper-Rhine region is evaluated and a comparison to a conventional reference system is presented. Ten exemplary data-sets representing typical operation conditions for the laboratories in different seasons and the latest information on their national energy strategies are used to evaluate the primary energy consumption, CO2 emissions, and demand-related costs. Various conclusions on the ecologic and economic feasibility of hybrid building energy systems are drawn to provide a toe-hold to the engineering community in their planning and development.

Exergy-based control strategies for the efficient operation of building energy systems

2019 ◽  
Vol 241 ◽  
pp. 118277 ◽  
Author(s):  
Saeed Sayadi ◽  
George Tsatsaronis ◽  
Tatiana Morosuk ◽  
Marc Baranski ◽  
Roozbeh Sangi ◽  
...  
Keyword(s):  
Control Strategies ◽  
Energy Systems ◽  
Building Energy ◽  
Efficient Operation ◽  
Building Energy Systems

scholarly journals Automated modelling of building energy systems with mode-based control algorithms in Modelica

2021 ◽  
Vol 2042 (1) ◽  
pp. 012067
Author(s):  
Xiaoye Cai ◽  
Junyi Xue ◽  
Alexander Kümpel ◽  
Dirk Müller
Keyword(s):  
Planning Process ◽  
Control Strategies ◽  
Energy Systems ◽  
Building Energy ◽  
Control Algorithms ◽  
Operating Modes ◽  
Building Energy Systems ◽  
Core Elements ◽  
And Control ◽  
Future Work

Abstract The increasing use of renewable energy in building energy systems has brought considerable challenges for the traditional planning process to develop appropriate control strategies. In previous work, we have introduced the MODI method to support the structured development of mode-based control algorithms, in which operating modes are core elements. However, modeling of energy systems and control algorithms for control tests is time-consuming and error-prone. Identification of permissible operating modes is also unfeasible. The paper introduces a methodology to identify permissible operating modes and model energy systems with mode-based control algorithms in the modeling language Modelica automatically. In the case study, we apply the methodology for an energy supply network and verify the functionality of the methodology. In future work, automated optimization of control algorithms will be integrated into the methodology.

Ontological specification for the model integration in ICT building energy systems

2012 ◽  
pp. 939-950 ◽  
Author(s):  
R Guruz ◽  
P Katranuschkov ◽  
R Scherer ◽  
J Kaiser ◽  
J Grunewald ◽  
...  
Keyword(s):  
Energy Systems ◽  
Building Energy ◽  
Model Integration ◽  
Building Energy Systems

scholarly journals Optimum Renewable Fraction for Grid-connected Photovoltaic in Office Building Energy Systems in Indonesia

2018 ◽  
Vol 9 (4) ◽  
pp. 1866 ◽  
Author(s):  
Ayong Hiendro ◽  
Ismail Yusuf ◽  
F. Trias Pontia Wigyarianto ◽  
Kho Hie Khwee ◽  
Junaidi Junaidi
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Energy Systems ◽  
Building Energy ◽  
Office Building ◽  
Pv System ◽  
Optimum Result ◽  
Pv Systems ◽  
Building Energy Systems

<span lang="EN-US">This paper analyzes influences of renewable fraction on grid-connected photovoltaic (PV) for office building energy systems. The fraction of renewable energy has important contributions on sizing the grid-connected PV systems and selling and buying electricity, and hence reducing net present cost (NPC) and carbon dioxide (CO<sub>2</sub>) emission. An optimum result with the lowest total NPC for serving an office building is achieved by employing the renewable fraction of 58%, in which 58% of electricity is supplied from the PV and the remaining 42% of electricity is purchased from the grid. The results have shown that the optimum grid-connected PV system with an appropriate renewable fraction value could greatly reduce the total NPC and CO<sub>2</sub> emission.</span>

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