Contractor

Name : sAtt Triple Balance

Contact : Iñaki Alonso Echeverría / Paloma Domínguez Liñán. Tel 914094633

 http://satt.es/

Construction Manager

Name : sAtt Triple Balance

Contact : Iñaki Alonso Echeverría / Paloma Domínguez Liñán. Tel 914094633

 http://satt.es/

Stakeholders

Function : Designer

sAtt Triple Balance

Iñaki Alonso Echeverría / Paloma Domínguez Liñán. Calle Ferraz 56, 28008 Madrid. Tel 914094633

 http://satt.es/


Project Author Basic project and execution. Construction management. Work execution

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Function : Developer

GREENPEACE ESPAÑA

Julián Carranza. [email protected], Calle Valores 1, 28007 Madrid

 https://es.greenpeace.org/es/


Project Promoter

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Function : Thermal consultancy agency

Alter Technica Ingenieros

Jesús Soto. Tel 921462526

 http://www.altertech.es/


Energy consulting and design of air conditioning and ventilation installations

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Function : Construction company

3B Ingeniería y Consultoría

Benjamín Cereceda. Tel 657583249

 http://www.3bic.es/


Facilities consulting and design

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Function : Others

María Gil de Montes

María Gil de Montes, Lighting designer. Tel 678047676

 http://mariagildemontes.com/


Illumination design

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Function : Environmental consultancy

Fundación para la Salud Geoambiental

Fernando Pérez

 https://www.saludgeoambiental.org/


Geoenvironmental study

Contracting method

Lump-sum turnkey

Owner approach of sustainability

Mission and vision

Greenpeace is an independent organization, politically and economically, that uses nonviolent direct action to attract public attention to global environmental problems and promote the necessary solutions for a sustainable and peaceful future.

The fight against climate change and energy policy are one of the main objectives for which the organization works. Greenpeace calls for ambitious commitments in the fight against climate change: emission reduction, energy-saving measures and support to renewable energy.

In this context, Greenpeace works and researches for the development of sustainable cities. The cities, play a fundamental role in the fight against climate change and are also considered the cathedrals of consumption, but also the places where the change towards a more sustainable planet will take shape. The city is an insatiable consumer, but the scarcity of natural resources will be its fundamental limiter. To change this situation, we have to change our way of life, including consumption, mobility and construction.

Greenpeace works to achieve the progressive elimination of organochlorines, used in the manufacture of PVC plastic. The production of these compounds releases persistent, bioaccumulative and toxic substances for the environment and health. Therefore, the use of PVC-free materials in the project has been a premise.

Another of the starting premises is to propose an air conditioning system that is most respectful with the environment, free of any chlorofluorinated refrigerant. A solution based on indirect evaporative equipment (with the support of direct equipment) is proposed, which uses water evaporation to reduce the air temperature, without increasing the absolute humidity. The thermal efficiency of the evaporative systems is extraordinary since its electrical consumption is that corresponding to the fans of the equipment. It is estimated that the air conditioning of 1,000 m2 will require an installed electrical power of less than 10 kW.

Architectural description

An architecture has been developed that represents the client's values, respectful of the environment and the health of the people who are supported by these measures:

• Energy efficiency and bioclimatic design

• Renewable energy

• Recycling

• Ecological materials

• Geoenvironmental health

• Vegetation

• Carbon footprint - CO2 null

Energy consumption

• Primary energy need : 196,70 kWhpe/m².year
• Primary energy need for standard building : 1,00 kWhpe/m².year

Calculation method : RD: 47/2007

CEEB : -0.0004

Breakdown for energy consumption :

Heating = 95.97 kWh / m2 year
Cooling = 4.18 kWh / m2 year
ACS = 3.19 kWh / m2 year
Lighting = 93.36 kWh / m2 year


More information :

For the design of the air conditioning system, the context of climate change has been taken into account, estimating the rise in temperatures over the next 20 years. Therefore, the efficiency of cooling systems has been prioritized over heat production. For the heating, the Joule effect is used, by means of electrical resistors coupled to the ventilation ducts. Despite not being an efficient system in itself (COP = 1), the Passive Building + Joule Effect assembly is, providing a lower electrical consumption for heating than the existing installations based on a heat pump.

• Initial consumption : 1,00 kWhpe/m².year

Envelope performance

• Envelope U-Value : 0,75 W.m^-2.K^-1
• Building Compactness Coefficient : 0,54

Systems

Heating system :
• Others
• Others
Hot water system :
• Individual electric boiler
Cooling system :
• Others
• Others
Ventilation system :
• Double flow
Renewable systems :
• Micro wind
Other information on HVAC :

For the design of the air conditioning system, the context of climate change has been taken into account, estimating the rise in temperatures over the next 20 years. Therefore, the efficiency of cold systems has been prioritized over heat production.

One of the starting premises is to propose a refrigeration system that is most respectful of the environment, free of any chlorofluorinated refrigerant. A solution based on indirect evaporative equipment (with the support of a direct team) is proposed, which uses water evaporation to reduce the air temperature, without increasing the absolute humidity. The thermal efficiency of evaporative systems is very good (savings of 80% compared to a conventional climate) since its electrical consumption corresponds only to the fans of the equipment. It is estimated that the air conditioning of 1,000 m2 will require an installed electrical power of less than 10 kW.

For the heat, the Joule effect is used, by means of electrical resistors coupled to the ventilation ducts. Despite not being in itself an efficient system (COP = 1), the Passive Building + Joule Effect assembly is, providing a lower electrical consumption for heating than the existing installations based on a heat pump. The heat needs are minimized by taking into account the insulation, heat of equipment and people together with the heat recovered.

The ventilation is mechanically controlled double flow with heat recovery. Controlled mechanical ventilation is the most effective way to combat the accumulation of biological, chemical and radioactive contaminants, and the double flow with heat recovery avoids the energy losses of traditional systems. Emission through duct networks that will use a heat recovery ventilation center, sized for the projected occupation.

These systems improve air quality and therefore the HEALTH and COMFORT of people.

Solutions enhancing nature free gains :

- Passive strategies: envelope insulation and sun protection. - Internal loads: people, equipment - Heat recovery through ventilation

GHG emissions

• GHG in use : 9,00 KgCO₂/m²/year
Methodology used :

The Life Cycle Analysis methodology of the ECV ECOMETER tool has been used. The use phase does not generate impact since the energy is taken from the electric mill owned by the promoter.

• GHG before use : 124,00 KgCO₂ /m²
• Building lifetime : 30,00 year(s)

, ie xx in use years : 13.78

• GHG Cradle to Grave : 131,00 KgCO₂ /m²

Life Cycle Analysis

The Project Life Cycle Analysis diagram is attached along with the study of GHG emissions of materials and primary energy.

Material impact on GHG emissions :

111

• Material impact on energy consumption : 430 556,00 kWhEP

Eco-design material :

- Recycled cotton fibre insulation for walls. Geopannel Insuffled cellulose insulation for walls. Thermopal Wood fibre insulation in floors. Ecospai / Pavatex. Natural cork flooring. Wicanders. FSC certified birch wood furniture. Ecological wood oil. Naturtrend Zweihorn Recycled and recyclable polypropylene chairs. Wing Actiu chair. For the acoustic conditioning solution, the partitions were isolated with recycled cotton fibre as well as the existing ceiling was repaired with acoustic insulating panels made of wood fibre bonded with magnesite. The sound bridges were treated with recycled cotton panels. - During the design process, the ECOMETRO ACV tool was used to analyze the carbon footprint of different construction solutions, choosing the least impactful. We present in the attached pdf the comparative (GEI-tN CO2) for the 4 most representative work units of the term ECO-DESIGNED materials. NOTE: The impact of GHG emissions is from phases A1-A3 (MANUFACTURE OF MATERIALS IS 111 tN of CO2 eq)

Water management

We use a ceramic filter to obtain a water free of odors, pathogens and other substances and thus obtain a good quality of water for consumption. Aerators are installed in taps for the reduction of flow to 0.6 lts / sg.

Indoor Air quality

DOUBLE-FLOW CONTROLLED MECHANICAL VENTILATION

The double-flow controlled mechanical ventilation system (with heat recovery) has filtration units that clean the air of particles, guaranteeing the quality of the indoor air.

The ventilation equipment with heat recovery supplies the room with fresh filtered fresh air with a sufficient flow rate and proportionally adjustable. At the same time, they aspirate an equivalent volume of stale air, loaded with CO2, and eliminate it as evacuated air. This also effectively eliminates other harmful substances, such as odours, fine powders, moisture, etc. Heat recovery takes place by means of a corrosion-resistant rotary heat recuperator with heat recovery factors of up to 90% and moisture recovery factors of up to 90%. In this way, the primary energy costs of the heating installation are considerably reduced. The FSP (fan specific performance) value also reflects the high degree of energy efficiency. Ventilation equipment model with heat recovery: Wolf CRL 4800 iH. RWT rotary recuperator.

Comfort

Health & comfort :

GEO-ENVIRONMENTAL HEALTH ANALYSIS

A study has been conducted aimed at identifying the different risk factors present in the premises, factors of geophysical, physical, chemical and biological origin. Geoenvironmental analysis is a tool for disease prevention. After the analysis, the corrective measures are indicated for the values that are above what is considered acceptable according to the norm FSG 2015 V.1.

The main environmental exposure factors are:

• Low-frequency alternate electric fields.

• Low-frequency alternate magnetic fields.

• Harmonics in the installation

• High-frequency artificial electromagnetic radiation.

• Continuous or electrostatic electric fields

• Continuous magnetic or magnetostatic fields

• Environmental radioactivity, especially radon gas.

• The geophysical activity of the terrain: magnetic field and terrestrial radiation.

• Artificial lighting.

• Aldehyde levels and especially formaldehyde.

• VOC levels (Volatile Organic Compounds).

• The levels of particulate matter.

• Nitrogen dioxide gas levels

• Sulfur dioxide levels.

• The levels of carbon dioxide.

• Ozone levels

For electromagnetic contamination, ground connections have been put in place. They protect in case of discharge and contribute to reducing the electric fields generated by the different devices we connect to the network. Due to an electric field value above the reference in the workplaces, a blocking measure is implemented by means of aluminium wiring trays or other conductive metal under the tables, with grounding.

Measured indoor CO2 concentration :

784 ppm

Product

Natural cork floor



Wicanders

https://es.wicanders.com/es/

 https://es.wicanders.com/es/


Product category :

We replace the existing PVC flooring with another one with good environmental performance. A floating cork floor is chosen in two different touches. Cork is a completely natural material, with a transformation process with very low impact and close origin (Portugal).

All the materials used have been chosen with the objective that the impact derived from their life cycle analysis is as small as possible. Recycled, recyclable, and renewable materials predominate taking into account the traceability and proximity to the project so that the carbon footprint derived from its transportation to the worksite is as low as possible. The measurement and calculation of the carbon footprint have been made using the ECOMETER ACV tool.

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Recycled cotton fiber insulation



Geopannel

 http://www.geopannel.com


Product category :

Insulation based on regenerated textile waste, which constitutes up to 85% of the product's composition. Not only do they not only consume resources but they contribute to eliminating waste from other industrial processes to incorporate them into the architecture, promoting the circular economy.
It has a low CARBON FOOTPRINT, contributing to minimize global warming and reduce waste from the textile industry. NO TOXICITY throughout its useful life and not irritating.
Origin: Logroño (Spain)


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Wood fiber insulation



Ecospai/Pavatex

 https://ecospai.com/


Product category :

Fiber insulation of compacted wood. It is a biodegradable, reusable and harmless material and does not emit toxic gases. Due to the low energy required for its manufacture, and the energy it will save during its useful life, it can be considered a great ecological product that is healthy and beneficial for health. It is installed on the technical floor and works as a base for the finishing floor.
Origin: Barcelona (Spain)


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 https://ecospai.com/aislamiento/pavatherm/

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Plant-based paint



Auro

 http://auropinturas.es/


Product category :

Plant-based paint is an aqueous product with low emission and without solvents, obtained naturally from organic and mineral products. It is a 100% natural product that has no petroleum-derived compound. It is applied to walls and ceilings and the boats are recycled as plant pots. Origin: Barcelona (Spain) / Germany

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Construction and exploitation costs

• Total cost of the building : 542 710 €

Urban environment

The office is located in C / Valores nº1 (Madrid) with main access through Pasaje Dorado 6. It is located in a residential area belonging to the Retiro district, next to the C / Doctor Esquerdo and the Parque de Roma. The place has an outdoor garden/terrace.

The place has an outdoor and indoor bike parking that promote sustainable mobility alternatives, both for the organization and for the neighbourhood.

Land plot area

Land plot area : 1 304,00 m²

Built-up area

Built-up area : 1 004,00 %

Green space

Green space : 300,00

Building Environmental Quality

• Building flexibility
• indoor air quality and health
• biodiversity
• comfort (visual, olfactive, thermal)
• energy efficiency
• products and materials