Case Studies

Social Housing Mendigorría 12

Pamplona, Spain

Code: CS13

Rendering of the retrofitted building
© IEE Navarra
Existing building
© IEE Navarra
DesignPH 3D model
© VAND arquitectura
Efficiency improvement in graphs
© VAND arquitectura

Original situation

The building, located in the city of Pamplona, consists of five floors above ground for apartments, a ground floor for access and building services rooms, and one more below ground, for parking and storage rooms. Two facades, located in the corner of the plot, are orientated to northwest and northeast, and the other two are party walls. In the south of the plot there is a courtyard for lighting and ventilation.

The building was constructed in 1993 using a traditional construction system: concrete floors and pillars, a double-leaf brick facade with mineral wool inside the chamber, flat roof without insulation, and wooden exterior framing with double glazing.

Renovation approach

Pre-monitoring and air quality analysis are finished. The project team collected the energy bills before and the design stage is finished as well. Because of inflation and increased prices, the construction phase has not started yet.

 

Modernisation proposal

It is a partial renovation including the following measures:

-Building envelope insulation (facades, roof, floor towards basement)

-Roof renovation, replacing the pitched roof with a pitched roof+flat roof, and the installation of a services room for the heat pump and the boiler

-Ventilated facade installation

-Windows, doors, and roller shutter replacement

-Windows airtightness improvement

-Ventilation system with heat recovery installation

-Heating and cooling systems renovation

-Existing thermal bridges improvement

-Photovoltaic system installation

No changes are planned for the interior layout of the dwellings.

Efficiency improvement

Streamlined approach with conventional construction methodology.

PHPP verification sheet before retrofit

TFA existing treated floor area (usable floor space)

1730.0 m2

Space heating Heating demand

150.0 kWh/(m2a)

Heating load

67.0  W/m2

Space cooling Cooling & dehum. demand

0.0 kWh/(m2a)

Cooling load

0.0 W/m2

Frequency of overheating (> 25 °C)

0.0 %

Frequency of excessively high humidity (> 12 g/kg)

0.0 %

Airtightness Pressurization test result n50

10.0 /h

Non-renewable Primary Energy (PE) PE demand

263.0 kWh/(m2a)

Primary Energy Renewable (PER) PER demand

365.0 kWh/(m2a)

Generation of renewable energy (in relation to projected building footprint area)

– kWh/(m2a)

EnerPHit classic

no

PHPP verification sheet after retrofit

TFA existing treated floor area (usable floor space)

1730.0 m2

Space heating Heating demand

45.0 kWh/(m2a)

Heating load

18.0  W/m2

Space cooling Cooling & dehum. demand

0.0 kWh/(m2a)

Cooling load

0.0 W/m2

Frequency of overheating (> 25 °C)

0.05 %

Frequency of excessively high humidity (> 12 g/kg)

0.0 %

Airtightness Pressurization test result n50

1.0 /h

Non-renewable Primary Energy (PE) PE demand

134.0 kWh/(m2a)

Primary Energy Renewable (PER) PER demand

94.0 kWh/(m2a)

Generation of renewable energy (in relation to projected building footprint area)

– kWh/(m2a)

EnerPHit classic

no

Key facts

Building typology

Apartment house

Existing treated floor area (usable floor space)

1 730 m2

Building owner

NASUVINSA

Consulting outphit partner

VAND

Project status

Construction phase

Overall budget

968 399 €

Contact

Nuria Díaz Antón
VAND arquitectura
Phone: +34 917751267
E-Mail: info@vandarquitectura.info