Contractor

Name : Nideker Houses

Contact : recepcion[a]nideker.es

 https://nideker.es/

Construction Manager

Name : Nideker Houses

Contact : recepcion[a]nideker.es

 https://nideker.es/

Stakeholders

Function : Designer

Rubén Muedra e Inés Fabra, arquitectos - Rubén Muedra Estudio de Arquitectura SL

 https://www.rubenmuedra.com/


Architecture and Construction Management

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Function : Other consultancy agency

Isabel Sánchez- Arquitecta & Passivhaus Designer

isabel[a]geyser-spain.com

 http://geyser-spain.com/


Passivhaus design and consulting; Passivhaus execution control

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Function : Other consultancy agency

Oliver Style - Passivhaus Consultant

praxis[a]praxis-rb.com

 http://www.praxis-rb.com


Passivhaus design and consulting

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Function : Site manager

Paul Roch - Arquitecto Técnico

Direction of Execution

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Function : Others

Pasal Mediterraneo - Instalador

Execution of installations

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Function : Certification company

Martin Amado - Energiehaus Arquitectos SLP

info[a]energiehaus.es

 http://www.energiehaus.es/


Passivhaus audit and certification

Contracting method

General Contractor

Owner approach of sustainability

The new headquarters of IDAI NATURE (a company specialized in natural solutions, for a profitable, sustainable agriculture with a future, which guarantee respect for the crop, the consumer and the environment -soils, aquifers, fauna and flora-) is an architectural proposal, selected by competition, in which the values of the company were represented.

Respectful of the environment and responsible management of resources, local development, the design of the building provides innovative solutions aesthetically related to the agricultural universe of the 21st century (smart greenhouses). In its continuous effort and investment in R + D + i, in its tireless search for excellence, and in its commitment to offer the latest technology, it opted from the beginning on a combination of professionals capable of materializing and communicating these aesthetic, environmental, and environmental values. technical, technological, and aesthetic in your NEW PROJECT.

 

Architectural description

• SATE system (EPS graphite interior finish white lime mortar render) on ventilated façade with thermal break with double skin of backlit cellular polycarbonate with RGB lighting and automatic control.
• Thermal insulation in facades and medians (100mm), slab (60mm), roofs (160mm), and fundamentally its continuity throughout the envelope through an exhaustive study for the total suppression of thermal bridges.
• Design and prescription of hollow components to combine the use of solar radiation in winter with summer solar protection. A large south-facing opening (Curtain Wall) with fixed sun protection: cantilever. Ripped horizontal holes in the building envelope in the East and West orientations, with mobile solar protections both outside and integrated into the glass.
• Selection and special treatments of carpentry with installed average Uw 1.99 w / m2 K, and selective insulating glass, low emissivity and treatments for the reduction of the solar factor to a value equal to or less than 0.27.
• Absolute control of unwanted air infiltrations through the intensive development of construction details during the project phase, planning, execution control and material prescriptions (Altermat), obtaining a value of 0.47 hour renewals according to the EN13829 standard in the Blower Door test at 50Pa carried out by an independent company (Termagraf).
• Combination of technological materials with other natural ones such as wood or abundant vegetation both inside and outside the building. Outdoor garden and draining pavement to curb runoff risks.

If you had to do it again?

The experience, although intense, has been very positive. With the aim of generating debate, we believe that it may be interesting to comment on an anecdote that left us perplexed. As mentioned in previous paragraphs, additional seasonal sun protection systems were implemented. Although the exterior protections have worked correctly, the interior protections integrated in some of the glasses have not given the expected result, but a surprising one. If what was expected of them was to reduce the heat input by activating them in periods of high radiation in that orientation, it has been proven in practice that the glasses that had these activated protections emitted more heat to the interior than those in the not.

We estimated that the actual results have not coincided with the transmittance declared by the glass manufacturer, which has not taken into account how this internal element can change the thermal properties of the assembly when it is activated. It would be necessary to investigate how these effects could be transferred to the calculation, how these data should be presented in the technical sheets and declarations of performance of the manufacturers. It could even be considered, as a research project, if this paradoxical situation could not finally have a positive significance in those places where there is little solar radiation or, in the same climatic zones, but in periods contrary to those foreseen.

Building users opinion

The client has been satisfied with the work and with the fulfillment of objectives, the users and workers are very happy with the degree of comfort they enjoy and that makes all the effort of all the professionals involved worth it.

Energy consumption

• Primary energy need : 83,00 kWhpe/m².year
• Primary energy need for standard building : 200,00 kWhpe/m².year

Calculation method : Other

CEEB : 0.0001

• Final Energy : 41,00 kWhfe/m².year
Breakdown for energy consumption :

Heating: 6.1 kWh / m2
Cooling: 13.1 kWh / m2 a
DHW: 3.7 kWh / m2 a
Electricity: 18.6 kWh / m2

Envelope performance

• Envelope U-Value : 0,64 W.m^-2.K^-1

Indicator : n50

• Air Tightness Value : 0,47

Systems

Heating system :
• Heat pump
Hot water system :
• Heat pump
Cooling system :
• VRV Syst. (Variable refrigerant Volume)
Ventilation system :
• Natural ventilation
• Double flow heat exchanger
Renewable systems :
• Heat pump
Other information on HVAC :

Use of high-efficiency air conditioning technology, with the best performance on the market.
• Air conditioning: VRF air conditioning system and duct distribution.
• Ventilation: air quality and indoor relative humidity control by installing a Controlled Mechanical Ventilation System (VMC) with a certified high-performance enthalpic heat recovery unit (Zehnder), calibrated according to the Passivhaus standard (Pasal Mediterráneo SL).
• Natural ventilation chimney (north patio) night load removal in summer

Smart Building

BMS :

• Lighting: high efficiency (led) lighting levels prescribed in UNE 12464.1
• Automation and Control: Twilight detectors have been included for the maximum use of natural lighting and a better adaptation to the users' circadian rhythm, as well as an automated control system based on temperature and interior CO2.
• Others that are considered: Chargers for electric vehicles in the parking lot.

GHG emissions

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

CO2 factors GEMIS (Germany)

• Building lifetime : 100,00 year(s)

Indoor Air quality

-Combination of natural materials such as wood or abundant vegetation, both inside and outside the building. (Outdoor garden and vertical indoor garden)

- Dual flow controlled mechanical ventilation with filtered outside air

- Low VOC emission materials

Product

Zehnder CAXL6000-CFE-R-2800-O-BF

Zehnder

 https://www.zehnder.es/


Product category : Climatización / Ventilación, refrigeración

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Shüco AWS 65 BS frames

Schüco

 https://www.schueco.com/web2/es


Product category : Acabados / Carpintería exterior - Puertas y Ventanas

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Schüco ADS 75 SI

Schüco

 https://www.schueco.com/web2/es


Product category : Acabados / Carpintería exterior - Puertas y Ventanas

Land plot area

Land plot area : 1 577,00 m²

Built-up area

Built-up area : 1 106,00 %

Building Environmental Quality

• indoor air quality and health
• acoustics
• comfort (visual, olfactive, thermal)
• energy efficiency
• mobility
• products and materials