Case Studies
Office building Castellana 19
Madrid, Spain
Code: OP20
Original situation
The original building, located in the city of Madrid, consists of two independent volumes separated by a central courtyard and connected through the basement floor, which is out of the thermal envelope.
The main building has five floors, and the second building has three floors. The main building has a protected historic façade, making implementing the airtight layer difficult.
The building from 1903 was retrofitted in 1986 using a traditional construction system.
Renovation approach
Construction works in progress. EnerPHit certification in progress.
Modernisation proposal
In this retrofit, the EnerPHit standard will be achieved through the Energy Demand Method. It is a complete renovation, including the following actions:
- Building envelope insulation (facades, roof, floor towards basement)
- Windows, doors, and roller shutter replacement
- Airtightness improvement
- Ventilation system with heat recovery installation
- Heating and cooling systems renovation
- Improvement of existing thermal bridges
Efficiency improvement
No calculations available for the existing building yet, no monitoring results available.
PHPP verification sheet after retrofit
PHPP verification sheet after retrofit
| TFA | existing treated floor area (usable floor space) |
3231.51 m2 |
|---|---|---|
| Space heating | Heating demand |
1.0 kWh/(m2a) |
| Heating load |
– W/m2 |
|
| Space cooling | Cooling & dehum. demand |
15.0 kWh/(m2a) |
| Cooling load |
– W/m2 |
|
| Frequency of overheating (> 25 °C) |
– % |
|
| 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 |
72.0 kWh/(m2a) |
| Primary Energy Renewable (PER) | PER demand |
41.0 kWh/(m2a) |
| Generation of renewable energy (in relation to projected building footprint area) |
– kWh/(m2a) |
|
| EnerPHit classic |
yes |
Video
Key facts
Building typology
Office | administration building
Existing treated floor area (usable floor space)
3 231,5 m2
Building owner
CCS Consorcio de Compensación de Seguros
Consulting outphit partner
VAND Arquitectura
Project status
Construction phase
Overall budget
9 338 618 €
Contact
Nuria Díaz Antón
VAND arquitectura
Phone: +34 917751267
E-Mail: info@vandarquitectura.info