Contractor

Name : Construccions Busquets Vilobí

 http://www.construccionsbusquets.com/

Construction Manager

Name : Construccions Busquets Vilobí

 http://www.construccionsbusquets.com/

Stakeholders

Function : Thermal consultancy agency

PROGETIC Projectes Sostenibles SL

[email protected]

 http://progetic.com/es/


Passivhaus Consulting, PHPP, building physics, design and installation domotic control system

Function : Construction Manager

Construccions Busquets Vilobí SLU

 http://www.construccionsbusquets.com/

Function : Designer

Jordi Rodríguez-Roda – López-Pedrero-Roda Arquitectes SLP

[email protected]

 http://www.lprarquitectes.com/

Function : Developer

MBD Real Estate Group

 http://www.zenithouses.com/

Function : Construction company

PGI Engineering

 http://www.pgiengineering.com/index.php/es/

Function : Certification company

Energiehaus Arquitectos SLP

[email protected]

 http://www.energiehaus.es/


Performing the Passivhaus audit, issuance of the EnerPHit certificate.

Owner approach of sustainability

To perform an energy rehabilitation reaching a high level of comfort with a minimum energy consumption.

Architectural description

• Vertical structure of ceramic loading walls.
• Horizontal roof structure of reinforced concrete half-joists and concrete caissons.
• Facades with continuous coatings.
• Existing openings of important dimension.
• Facing main facade to the south, to the street of 8 meters wide, that is, with minimum
• solar contributions.
• Action strategy:
• Taking into account that the façade is protected by the Special Plan for the Protection of the Heritage of Girona's old quarter, all the insulation and sealing actions have been done inside with specific technical solutions that have forced to treat air tightness per floor.

Energy consumption

• Primary energy need : 111,00 kWhpe/m².year
• Primary energy need for standard building : 235,00 kWhpe/m².year

Calculation method : Other

CEEB : 0.0002

• Final Energy : 32,00 kWhfe/m².year
Breakdown for energy consumption :

HEATING: 8.9 KWHFE / M2.YEAR
REFRIGERATION: 2,5 KWHFE / M2.YEAR
ACS: 6.4 KWHFE / M2.YEAR
ELECTRICITY: 14.8 KWHFE / M2.YEAR


• Initial consumption : 235,00 kWhpe/m².year

Envelope performance

• Envelope U-Value : 0,19 W.m^-2.K^-1
More information :

U muros = 0.19 W / m2K
U cubierta = 0.20 W / m2K
U forjado inferior = 0.37 W / m2K

• Building Compactness Coefficient : 0,28

Indicator : n50

• Air Tightness Value : 1,00

Systems

Heating system :
• Heat pump
• Others
Hot water system :
• Heat pump
• Solar Thermal
Cooling system :
• Reversible heat pump
• Others
Ventilation system :
• Double flow
• Double flow heat exchanger
Renewable systems :
• Solar Thermal
• Heat pump
Other information on HVAC :

The system consists of an air-water heat pump as production equipment, a fan with heat recovery and post-treatment water battery, and radiant ceiling plates to increase the cooling power of the system and cover the maximum thermal load in summer. The integration of the equipment and the control of the system is carried out with a domotic control unit, temperature and humidity sensors per room, and elements that act on the heat pump, the hydraulic circuits and the fan, giving information at a distance of real behavior of the system, and allowing the adjustment of the operating parameters to optimize its performance. This solution offers heating and cooling with the same terminal, working almost silently and at low temperature, giving high thermal comfort and good performance working with heat pump.

Smart Building

BMS :

A temperature and humidity sensor has been installed in each of the 5 rooms where the radiant plates are located (dining room, kitchen and 3 bedrooms). The temperature and humidity data allow to adjust the water temperature of the plates (acting on the position of the mixing valve) so as not to have condensations, without having to close circuits, thus avoiding start-and-stop cycles of the heat pump, which results in low performance thereof and shortened compressor life.

At the same time, the fan is operated to lower or raise the flow depending on the thermal needs, with a programming (adjustable by the user) that prevents the fan from working in "party mode" during the resting hours. The control allows setting different setpoint temperatures according to schedules or according to occupation, in order to obtain the maximum comfort with the minimum energy consumption.

The ventilation system works automatically with pre-established schedules, with the possibility of manual adjustment according to the occupation level, or the dehumidification needs.

The user can control the air conditioning system and display temperature and humidity data by area, via a tablet fixed to the wall inside the home, or via a mobile phone from anywhere. The application is based on a menu system, quickly configurable and accessible.

GHG emissions

• GHG in use : 22,00 KgCO₂/m²/year
Methodology used :

PHPP

Indoor Air quality

The air quality is guaranteed with the double flow ventilation system with heat recovery, which contains F7 filters at the entrance.

Product

ComfoAir Q 600



Zehnder

[email protected]

 http://www.zehnder.es/


Product category :

The system of ventilation with recovery of heat of high efficiency is of Zehnder and is composed by a machine of ventilation ComfoAir Q 600 by apartment, silencers ComfoWell, a battery of water ComfoPost and a system of pipes of internal distribution and mouths of impulsion and extraction ComfoTube.

The double flow ventilation system with heat recovery provides indoor air quality and comfort to users. The acceptance of this by the team at work was good.

The Loxone control system



Loxone

[email protected]

 https://www.loxone.com/eses/


Product category :

Domotic control system that allows quick installation, systems are easily expandable for the future and control is simple for users, who access and act on the system from a computer, tablet or mobile phone via Internet.

The Loxone home automation control system allows easy handling of home installations.

Energy bill

• Forecasted energy bill/year : 975,00 €

Real energy cost/m2 : 1.44

Real energy cost/Dwelling : 195

Urban environment

Historic center of the city of Girona.

Building Environmental Quality