- Building Type : Collective housing > 50m
- Construction Year : 1982
- Delivery year : 2011
- Address 1 - street : meritxell 30 00500 ANDORRA LA VELLA, ANDORRA, Andorra
- Climate zone : [Cfc] Marine Cool Winter & summer- Mild with no dry season.
- Net Floor Area : 2 300 m2
- Construction/refurbishment cost : 340 000 €
- Cost/m2 : 147.83 €/m2
Primary energy need :
(Calculation method : Primary energy needs )
Reformed building with 27 apartments, applying energy efficiency criteria.
It’s situatedin an alpine zone.
The winter’s minimum temperature is -12°C.
Reduced heating consumption by 82%.
Acting on facade insulation and heating system: thermographic study, 15 to 20cminsulation, triple glazing LowE, blower door test, etc.
See more details about this projecthttp://www.construction21.org/espana/case-studies/es/aconcagua.html
DesignerENGINESA [email protected] architects and thermal engineering designer
Building users opinion
Users are happy because their heating cost is very low and the comfort has increased.
Owner is happy too because he can grow up the price to rent the apartments, even if the users pays less than before (because the heating cost). He is happy too because he has a waiting list to rent their apartments.
- 4,50 kWhpe/m2.year
- 55,00 kWhpe/m2.year
- 212,00 kWhpe/m2.year
- 0,24 W.m-2.K-1
Real final energy consumption
- Heat pump
- Water radiator
- Heat pump
- No cooling system
- Natural ventilation
- No renewable energy systems
- 100,00 %
rockwool external pipe insulation 2x5cm each pipe
exterior pipe insulation
very good insulation with this thickness
daikin heat pump
Heat pump for heating low temperature (max 50ºC) and high efficiency COP between 2.84 to 3.77, ESEER 3.78.
It works at proportional temperature to outdoor temp to achieve always maximum COP.
We use with this heat pump, existing old radiators (high temperature and high emission) to heat this buiding after refurbishment, working at low temperature and low emission.
daikin altherma for DHW
High temperature heat pump to produce domestic hot water (DHW)
Produces low cost hot water. No problems
grundfos magna 3 for heating and DHW
Electronic pump with connection to BMS control system, data transmission: pressure (bar), flow (m3/h), instant consumption (W), cumulate consumption (kWh), thermal flow (kWh).
Working at constant temperature function (hot water production) or at constant pressure function (for heating facility)
Sometimes the pump stops without any order