Cost-optimal energy performance calculations of a new nZEB hotel building using dynamic simulations and optimization algorithms

The aim of this research, carried out in collaboration with Maco Technology Inc., was to analyse the energy performance of temporary textile structures that are often used to host itinerant events. This paper illustrates the dynamic simulations carried on the Ducati Pavilion, designed by Maco Technology, which hosted Ducati staff during the different stages of the Superbike World Championship. Specific aspects relating to the structural/constructive system of the project were also analysed. The theme of energy saving and carbon reduction is of great importance in temporary and itinerant structures and environmental sustainability in relation to the materials used, storage, re-use, mode of transport and ability to respond efficiently to the climatic conditions of the installation sites is an important aspect. The Ducati Pavilion was modelled and analysed from an energy point of view using Design Builder software. Ways of improving performance were analysed under summer conditions. The paper focuses on the importance of optimizing the performance of textile envelopes: the methodology proposed allows visible savings in terms of energy consumption and achieves good levels of environmental comfort in temporary buildings with low thermal mass structure.

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Retrofitting for Optimal Energy Performance

10.4018/978-1-5225-9104-7 ◽

2019 ◽

Keyword(s):

Energy Performance ◽

Optimal Energy

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Energy Renovation versus Demolition and Construction of a New Building—A Comparative Analysis of a Swedish Multi-Family Building

Energies ◽

10.3390/en12112218 ◽

2019 ◽

Vol 12 (11) ◽

pp. 2218 ◽

Cited By ~ 5

Author(s):

Lina La Fleur ◽

Patrik Rohdin ◽

Bahram Moshfegh

Keyword(s):

Life Cycle ◽

Life Cycle Cost ◽

Energy Performance ◽

Optimal Energy ◽

Heated Floor ◽

New Construction ◽

Family Building ◽

1960S And 1970S ◽

Internal Volume ◽

The 1960S

This study addresses the life cycle costs (LCC) of energy renovation, and the demolition and construction of a new building. A comparison is made between LCC optimal energy renovations of four different building types with thermal performance, representing Swedish constructions from the 1940s, 1950s, 1960s, and 1970s, as well as the demolition of the building and construction of a new building that complies with the Swedish building code. A Swedish multi-family building from the 1960s is used as a reference building. LCC optimal energy renovations are identified with energy saving targets ranging between 10% and 70%, in addition to the lowest possible life cycle cost. The analyses show that an ambitious energy renovation is not cost-optimal in any of the studied buildings, if achieving the lowest LCC is the objective function. The cost of the demolition and construction of a new building is higher compared to energy renovation to the same energy performance. The higher rent in new buildings does not compensate for the higher cost of new construction. A more ambitious renovation is required in buildings that have a shape factor with a high internal volume to heated floor area ratio.

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Assessment of Cost-optimal Energy Performance Requirements for the Italian Residential Building Stock

Energy Procedia ◽

10.1016/j.egypro.2014.01.048 ◽

2014 ◽

Vol 45 ◽

pp. 443-452 ◽

Cited By ~ 32

Author(s):

Vincenzo Corrado ◽

Ilaria Ballarini ◽

Simona Paduos

Keyword(s):

Residential Building ◽

Energy Performance ◽

Building Stock ◽

Optimal Energy ◽

Performance Requirements ◽

Residential Building Stock

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A Control Algorithm for Optimal Energy Performance of a Solarium/Greenhouse with Combined Interior and Exterior Motorized Shading

Energy Procedia ◽

10.1016/j.egypro.2012.11.112 ◽

2012 ◽

Vol 30 ◽

pp. 995-1005 ◽

Cited By ~ 5

Author(s):

Diane Bastien ◽

Andreas K Athienitis

Keyword(s):

Control Algorithm ◽

Energy Performance ◽

Optimal Energy

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Coupling a sunspace to a hyper insulated building: Field tests of different configurations to optimize the energy and comfort performance

WEENTECH Proceedings in Energy ◽

10.32438/wpe.3018 ◽

2018 ◽

Vol 4 (2) ◽

pp. 109-118

Author(s):

Giulia Ulpiani ◽

Costanzo di Perna ◽

Alessandra Romagnoli ◽

Serena Summa

Keyword(s):

Central Italy ◽

Field Tests ◽

Energy Performance ◽

Design Parameters ◽

The Sun ◽

Dynamic Simulations ◽

Convective Transfer ◽

Daily Energy ◽

Indoor Conditions

An experimental study was conducted on a hyper insulated building coupled with a sunspace, to investigate the role of the major design parameters (depth, glass percentage and typology, etc.) and mechanically controlled convective transfer (VMC) on the energy performance. Based on 132 dynamic simulations, a modifiable sunspace was built on the sun-exposed side of a nZEB mock-up in Central Italy and monitored via an extensive sensor network. The conditioning system tracked the seasonal set point via a bang-bang controller, while the VMC was governed by a bespoke temperature-driven logic. In a previous run, irradiative and combined irradiative-convective modes were tested on a 30% glazed sunspace: VMC was found to dump the daily energy consumption to -27%. Then; a second monitoring campaign compared the 30% and 50% configurations. The former guaranteed very stable indoor conditions (20.1±0.3°C), yet the latter still preserved global comfort at a remarkably lower (-40%) energy expenditure.

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Energy analysis, numerical simulations and intervention proposals for a NZEB industrial building: the “Loccioni Leaf Lab” case study

E3S Web of Conferences ◽

10.1051/e3sconf/202123806004 ◽

2021 ◽

Vol 238 ◽

pp. 06004

Author(s):

Ettore Stamponi ◽

Nicola Lattanzi ◽

Francesco Giorgini ◽

Fabio Serpilli ◽

Sergio Montelpare ◽

...

Keyword(s):

Smart Grid ◽

High Performance ◽

Energy Performance ◽

Heat Pumps ◽

Weather Data ◽

Industrial Building ◽

Dynamic Simulations ◽

Heating And Cooling ◽

Energy Consumptions

The object of this paper is the “Loccioni Leaf Lab”, an industrial nZEB connected to a thermal and electric smart grid. Having nZEB buildings connected to a smart grid offers the possibility of maximizing the benefits that can be obtained by optimal regulation of the grid itself, providing excellent economic and energy results. The case study, which hosts offices and workers operating on test benches, features high performance envelope, solar photovoltaic systems, groundwater heat pumps and a hightechnology control and monitoring system. In order to analyse HVAC-related energy consumptions, the building was modelled using DesignBuilder and EnergyPlus software. The annual dynamic simulations for the assessment of building thermal-energy performance were carried out using available monitored weather data (2019). The model was validated according to ASHRAE guidelines, comparing the outputs of the software with data collected and stored by Company internal database. In the validation process, mean indoor air temperatures of several zones and heating and cooling energy consumptions were considered as key outputs. The validated model has then been used to suggest optimization strategies and to analyse the results obtained with proposed interventions in terms of energy saving.

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PCSP’s Diagonal Tie Connectors Thermal Bridges Impact on Energy Performance and Operational Cost: Case Study of a High-Rise Residential Building in Estonia

E3S Web of Conferences ◽

10.1051/e3sconf/202017208006 ◽

2020 ◽

Vol 172 ◽

pp. 08006

Author(s):

Martin Kiil ◽

Martin-Sven Käärid ◽

Paul Klõšeiko ◽

Karl-Villem Võsa ◽

Raimo Simson ◽

...

Keyword(s):

Energy Demand ◽

Residential Building ◽

Energy Performance ◽

Relative Increase ◽

Dynamic Simulations ◽

Climatic Regions ◽

High Rise ◽

Thermal Bridge ◽

Heating Energy Demand ◽

Air Circulation

This study analyses the effect of air circulation around diagonal tie connectors in precast sandwich panels on heating energy demand, energy performance value and heating costs of a sample residential building. Dynamic simulations were performed using 4 different climatic boundary conditions: Estonian test reference year, Estonian 48-year weather dataset as well as data from Eastern Germany and Northern Finland. The results show that the effect of the thermal bridge is most noticeable in total room heating energy demand (increase of 10.3%), while the influence on energy performance value was 1.1%. The relative increase of total room heating energy demand was similar (7.0-10.3%) in all studied climatic regions.

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