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Assessment of cost-optimal solutions for high-performance multi-family buildings in iranian context and comparison with Italy

Alvand, Mohammadhossein and Gholami, Zahra

Assessment of cost-optimal solutions for high-performance multi-family buildings in iranian context and comparison with Italy.

Rel. Marco Filippi, Enrico Fabrizio, Maria Ferrara. Politecnico di Torino, Corso di laurea magistrale in Architettura Per Il Progetto Sostenibile, 2017

Abstract:

In recent years, according to public awareness about the harmful effects of fossil fuels on the environment and C02 emission, many efforts have been carried out in order to reduce pollution, like imposing strict rules on energy consumption.

In this regard, the present study was born and aims to propose various solutions to investigate the feasibility of improving the performance of an existing typical multi-family building in Iranian context, to achieve a high performance one with proper cost-optimal levels of energy performance by using the global cost approach defined by EU legislation, this study was also done in the Italian context in order to give the possibility to compare and validate the final results.

The first step of the work was to study the regulatory framework, guidelines, required legislation and standards at the European, Italian and Iranian levels.

Afterward, Design-Builder was chosen as an interface for 3D modeling because is the most powerful graphical interface to EnergyPlus (the software that used for building simulation).

The next step was to investigate the case study which from now on, will be called Real-Case (RC), actually, the RC is an eleven-story multi-family building located in the southwest of Iran, Shiraz, and location of the RC for the study in Italy was assumed to be Turin.

50 various packages of energy efficiency measures were chosen from a wide range of possible measures, this selection was performed by combining, five different levels of thermal insulation, two window types (a double and a triple glazing), two shading system option(a between glass blind and an external blind) and two different high efficient energy systems, in addition to the solar renewable energy source such as PV system installed on the building facade and thermal solar panel on the building’s roof.

Precisely all packages in terms of economic and energy performance were simulated and analyzed in both Italian and Iranian context.

Then the energy consumption and costs of the various packages were investigated and compared in order to evaluate the impact of the selected measures in energy efficiency improvement and global cost, and revealed that obtaining high performance building simultaneously with the cost optimal levels can be fulfilled, but it is noteworthy to mention that the cost-optimal level directly depends on suitable financial subsidies and government policies on renewable electricity price.

Relatori: Marco Filippi, Enrico Fabrizio, Maria Ferrara
Tipo di pubblicazione: A stampa
Soggetti: A Architettura > AM Estimo
G Geografia, Antropologia e Luoghi geografici > GD Estero
S Scienze e Scienze Applicate > SE Ecologia
Corso di laurea: Corso di laurea magistrale in Architettura Per Il Progetto Sostenibile
Classe di laurea: NON SPECIFICATO
Aziende collaboratrici: NON SPECIFICATO
URI: http://webthesis.biblio.polito.it/id/eprint/6314
Capitoli:

ACKNOWLEDGEMENTS

ABSTRACT

1 INTRODUCTION

1.1 Context

1.2 Motivation and objectives of the project

2 EXCURSUS ON REGULATORY FRAMEWORKS

2.1 Cost optimality in European directives

2.1.1 EPBD

2.1.2 EPBD Recast

2.1.3 Net/nearly Zero Energy Buildings (n-ZEBs)

2.1.4 Cost-Optimal methodology

2.2 Italian legislation

2.3 Iranian legislation

3 TOOLS USED FOR THE PROJECT SIMULATION

3.1 Building simulation software

3.1.1 EnergyPlus

3.1.2 DesignBuilder

4 REAL CASE (RC) DESCRIPTION

4.1 Boundary condition

4.2 The RC description

5 DEFINITION OF ENERGY EFFICENCY MEASURES

5.1 Envelope intervention

5.2 Energy systems interventions

5.3 Intervention together

6 ENERGY SIMULATION

6.1 Subdivision of building into different thermal zones

6.2 The initial input data and weather fil

6.3 Geometrical model

6.4 Domestic hot water demand

6.4.1 Turin

6.4.2 Shiraz

6.5 Sizing calculation and HVAC modeling

6.6 The natural ventilation

6.7 The set points

6.8 The internal heat gains

6.9 Results of the energy simulations

7 ECONOMIC ASSESSMENT

7.1 General Data

7.2 Calculationassumptions

7.3 EconomicAnalysisResultsofEEMs

8 OPTIMAL LEVELS OF ENERGY PERFORMANCE BASED ON COST

8.1 Results Evaluation

8.1.1 Turin

8.1.2 Shiraz

8.2 Comparison the final results between Iranian & Italian case

9 CONCLUSION AND FUTURE CONSIDERATION

REFERENCES

APPENDIX

Energy Procedia paper

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