RELS-ENPI Project A Common Renovation Strategy for Renovation Public Housings - energy refurbishment of dwellings

RELS-ENPI Project
                              energy refurbishment of dwellings
                           A Common Renovation Strategy for
                              Renovation Public Housings
  Mohamed GOUIDER & Mohamed CHOURA
Company of Studies and Development of the Northern
        Coasts of the City of Sfax- Tunisia

Background
The study case of this presentation is realised within the Housing
Energetic Renovation Project              : European program headed
by the Spanish Catalonian Housing Agency and including
partners from four mediterranean countries:
Spain : Polytechnical University of Catalonia
Tunisia : -The Company of Studies and Development of the Northern Coasts
           of the City of Sfax
          -The National Agency of Energy Efficiency
Italy   : -The Italian Housing Federation
          -The Social Housing Regional Agency of Sardenia
Jordan : Royal Scientific Society

The RELS project is founded by the European Union as an aspect of
the Cross Border Cooperation In the Mediterranean funded under
the European Neighbourhoud and Partnership Instrument
(ENPI- CBC Med) that aims at:
-The promotion and socio-economic   development and
 enhancement of territories
-The promotion of environmental sustainability at the
 Mediterranean basin
-The promotion of better conditions and modalities for ensuring the
 mobility of persons, goods and capitals
-The promotion of governance   and Territorial development

ENPI- CBC Med geographical eligibility

OPERATIONAL SCHEME
Preliminary step: Analysis and identification of the objectives

                                             RELS Objectives ?
                        Actual

                   Objective 1.

                   Objectiv e 2.

                                          2020           2050

OPERATIONAL SCHEME

Diagnosis: Simulation, General criteria
The simulation work is subdivided into the following two
phases:
Phase 1 – Diagnosis
The objective is to understand the current state of the building
and assess the energy balance of the building to identify
potential opportunities for improvement

Phase 2 Improvement Options
The objective is to verify the savings resulting individual and
collective measures identified for improvement.

Expected Results Phase 1.
- The Request annual energy
- The energy balance
- The Final Evaluation of primary energy consumption

Expected Results Phase 2.
Options for improving the thermal envelope
- The results will be compared with the initial state and will
  identify separately the improvement percentage of each
  option
- Submitted to the supervision of the bioclimatic experts
- Economic evaluation of each option

• Consumption                           data (invoicing)
            Simulation of the
              current state

            DEFINIR:                                  Simuler la           Analyse des
            ‐Architecture        Simuler la           consommation de      résultats annuels
            ‐Systèmes            demande              la construction
            ‐COFs                théorique de la
            ‐Confort             construction
            ‐Ventilation et
            infiltrations

                                                                                               Comparatif des
                                                                                               résultats avec les
                                                               NO                              donnés de
                                                                                               facturation

  1ª                          Analysis of the current state                                            Yes
Enquêtes
                                             Identifier les         Analyse des
                                             opportunités de        résultats
                                             améliorations          mensuelles

                               PROPOSER ACCIONS D’ AMELIORATION

The Company of Studies and Development of the Northern Coasts
of the City of Sfax was created to implement the TAPARURA
urban environmental mega project in the northern coast of the city
of Sfax, Tunisia . The vocation of the company is the depollution
and reclamation of a coastal area spreading over 420 ha and the
development of a new urban zone for 50 000 inhabitants in addition
to the related coastal management and environmental monitoring
of the executed and prospected works.

The company’s new
    head office

       Taparura Project Zone

This presentation investigates the realization of the head office of
the company made up of a five floor building located at the
Taparura zone in the city of Sfax in addition to a renovation of 20
rooms in Ibn Jazzar campus at the University of Sfax.
The objective of this project is the use of local and new building
materials proved to be ecological and friendly to the environment as
well as the adoption of green architecture based on construction
methods that favor a maximum of thermal insulation and energetic
efficiency.
The obtained results will serve for decision making and
recommendations for future building projects in the Taparura zone.

Overview of the building (NE)                    Overview of the building (NE)
                      Ibn Jazzar campus at the University of Sfax
before amelioration works                                    under works

Overview
  of the

building (NE)

Building design
The choice of building materials, disposition and architectural
design were mainly based on their efficiency in terms of energy
saving and friendliness to the environment. The use of local and new
building materials in order to meet this recommendation was
decided accordingly. Architectural design was also based on
construction methods that favor a maximum of thermal insulation
and energetic efficiency. In fact, the whole installations and
equipment are oriented to reach a maximum reduction in the
consumption of the energy and emission of CO2, and this, in
accordance with the Tunisian regulation for the new residences.

In order to check the efficiency of the choices made in terms of
temperature, relative hygrometry, air quality, air flow speed,
sunshine effect…etc a monitoring program was set. The three types
of sensors indicated below were installed in well-defined locations in
the buildings:
• Relative humidity / inside temperature sensor type Testo 174-H
• Ambient CO/CO2 measuring sensor type Testo 315-3
• Multi sensor for measuring the air speed type Testo 435-1
For the energy consumption monitoring, different counters are
installed in order to check the consumption rate in accordance with
the local type and vocation.

sensor           Multi sensor          sensor
type Testo 315-3   type Testo 435-1   type Testo 174-H

CONCLUSION
The preliminary results of the follow up campaign were collected in order
to compare the actual thermal performance of the used materials with the
simulation realized by the Energy+ software. In fact, the first results are
very promising. They show no important discrepancy between the values
collected from both sources. The first results show a high performance in
terms of insulation of the external walls and the roofs and a high efficiency
of the glazing design. Energetic effectiveness over the middle and long
terms remain to be checked over the time around the 4 seasons. Final
results would serve for the future recommendations for similar projects in
the Taparura urban zone.

MARIE 6th STEERING COMMITTE – 25th-27th March 2014, MALTA
         Energy Efficiency in Mediterranean Buildings Conference

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