Semanco workshop Theme2 - E4R

Tools for Building Energy Efficiency and Retrofitting in Southwest Europe. E4R Project

Sergio Muñoz [email protected]

HERRAMIENTAS DE EVALUACIÓN DE EFICIENCIA ENERGÉTICA DE EDIFICIOS. REHABILITACIÓN EN EL ESPACIO SUDOE FERRAMENTAS DE AVALIAÇÃO DA EFICIÊNCIA ENERGÉTICA DE EDIFÍCIOS. REABILITAÇÃO NO ESPAÇO SUDOE OUTILS D'ÉVALUATION DE LA PERFORMANCE ÉNERGÉTIQUE DES BÂTIMENTS. RÉHABILITATION AU SEIN DE L'ESPACE SUDOE




INTRODUCTION

Potential energy savings in existing buildings in SUDOE Space with the growing awareness of responsible energy consumption have caused than retrofitting has been postulated as a pillar of public policies in economic and energy, as well as a business opportunity for companies in the sector.

These policies are not being applied properly, since in many cases solutions which are chosen are not appropriate for the building, either because they are energy inefficient or because the cost of the investment does not meet expectations energy savings

Homeowners ignore their real potential of saving money and energy if the appropriate solutions are implemented

Some software tools are currently used in order to evaluate energy consumption of existing buildings. However, these tools are difficult to use and are feasible only for expert users and not allowing the homeowner can check the benefits of retrofitting, taking account he must be conscious of these benefits before deciding to retrofit


AIDICO. Instituto Tecnológico de la Construcción. Valencia (España) www.aidico.es

ITG. Instituto Tecnológico de Galicia. A Coruña (España) www.itg.es

INEGI. Instituto de Engenharia Mecânica e Gestão Industrial. Porto (Portugal) www.inegi.up.pt Junta de Extremadura. Consejería de Fomento, Vivienda, Ordenación del Territorio y Turismo. Extremadura (España) www.juntaex.es

EIGSI. École d’Ingénieurs généralistes. La Rochelle (Francia) www.eigsi.fr

E4R PARTNERS


The main expected result of the project is an Energy Assessment Web Tool capable to quantify, quickly and easily, the energy consumption of existing buildings, suggesting and prioritizing the different energy saving strategies. This tool adapts to different user needs:

E4R OBJECTIVES AND RESULTS EXPECTED

E4R project aims to encourage and promote energy efficient retrofitting of existing buildings in SUDOE Space, providing a common environment to all the stakeholders: Public Administration, designers, product manufacturers, builders, facility managers and homeowners

Public Administrations Neighborhood Analysis in order to define policy strategies

Homeowners To know the real state of their buildings and to estimate the potential energy and economic savings.

Construction Professionals Detection of business opportunities through energy buildings analysis


ENERGY ASSESSMENT WEB TOOL: INTRODUCTION

Most homeowners are unaware of their potential energy savings and the retrofitting strategies economic cost in order to calculate the amortization period. E4RSim success will be based in usability and results reliability. On the one hand, previous SUDOE analysis will minimize the input data encouraging the usability. On the other hand, after analyzing several calculation engines, Energy Plus has been chosen due to its international credibility, software development environment, fast simulation and its possibility of execution on a web server.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY

E4RSim is a web tool where data from user, database and web services are combined in order to assess energy efficiency of existing buildings using Energy+ calculation engine.

Weather Maps

Constructive Solutions Facilities

Geometry

Location

Age

Input Data

Constructive Solutions

Database

Typology

Facilities

Energy+

PRELIMINARY RESULTS

FINAL ANALYSIS

RETROFITTING STRATEGIES

.IDF file .EPW file

CADASTRE

Retrofitting Strategies


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY - LOCATION

First user step is to locate the building. Some Web Services have been integrated to do it, BING and Cadastre (only in Spain).


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY - TYPOLOGY

Then, building some typology information must be inserted: Building Activity and Age Construction. In case of Spain, this information is provided by Spanish Cadastre Web Services.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY – CONSTRUCTIVE SOLUTIONS

Constructive Solutions must be selected: • Façade. • Roof. • Windows:

frame, glass and sunscreen.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY – FACILITIES

Facilities must be selected: • Heating and

Cooling. • Lighting. • Ventilation.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY – GEOMETRY I

In case of Spain, Geometry is generated automatically using cadastral maps provided by Spanish Cadastre in .SHP format taking some premises: • Ground Floor is 4 meters high and 3 meters remaining plants. • Windows are generated on the façades taking account the year

construction to determine the windows area. • Surrounding buildings are generated too to consider the shadows effect.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY – GEOMETRY II

In other cases, user must draw the Geometry with an easy tool: • Building Envelope. • Façades, adiabatic walls and patios must be identified. • Surrounding buildings envelope.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY – PRELIMINARY RESULTS

Monthly Energy Consumption (kWh) Results are shown divided into: heating, cooling and lighting.


ENERGY ASSESSMENT WEB TOOL: METHODOLOGY – ANALYSIS

Most appropriated retrofitting strategies from database are suggested balancing economic cost and energy savings. Once user selects these strategies a new simulation is launched.


CONCLUSIONS

Within the E4R European Project, a web tool, called E4RSim, has been developed to quantify the potential energy savings of existing buildings in Southwest Europe. It’s a friendly and simply tool which seeks to be used by homeowners to demonstrate them the energy efficiency retrofitting benefits. E4RSim uses information from databases developed (constructive solutions, facilities and retrofitting strategies) and web services in order to simplify data input. Moreover, a dynamic method has been implemented to obtain weather conditions from each location, determining which parameters have most influence (temperature, humidity and radiation). Results have been validated comparing with Designbuilder, obtaining a maximum deviation of 5% in energy heating and cooling, though validation period has not ended yet.


HERRAMIENTAS DE EVALUACIÓN DE EFICIENCIA ENERGÉTICA DE EDIFICIOS. REHABILITACIÓN EN EL ESPACIO SUDOE FERRAMENTAS DE AVALIAÇÃO DA EFICIÊNCIA ENERGÉTICA DE EDIFÍCIOS. REABILITAÇÃO NO ESPAÇO SUDOE

OUTILS D'ÉVALUATION DE LA PERFORMANCE ÉNERGÉTIQUE DES BÂTIMENTS. RÉHABILITATION AU SEIN DE L'ESPACE SUDOE

Thanks for your attention

www.e4rproject.eu

[email protected]

Sergio Muñoz [email protected]

Semanco workshop Theme2 - E4R

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Transcript of Semanco workshop Theme2 - E4R