Logistics Framework in Belgium

NATURAL SOIL REMEDIATION The industrial activities of the past decades have resulted in soil pollution of the project area. Not only would the remediation of the entire site (13,000m2) with traditional methods be a costly affair, it would also be far from ideal from an ecological perspective. Phytoremediation, an alternative method where trees and plants are used as soil-remediating elements is proposed. Vegetation is used to capture, remove, convert and/or break down harmful substances from soils. Microorganisms such as bacteria and good fungi help to break down oil and petroleum in the soil. In the initial stage, it will be investigated what combination of trees, plants and bacteria is suitable in tackling the site-specific contamination. This technology is far less expensive and less damaging to the environment compared to traditional methods. There is no interference with the soil, transport will not be required and it works on solar energy. SMART GRID The canopy on the roof will be covered with solar panels. Both solar panels and a cogeneration unit will feed the low-voltage panels. The electricity generated will be utilised for the electric vehicle fleet as well as for the offices. An internal smart grid, linked to an energy management system, will guarantee efficient use of the electricity system and prevent overloading. Supply and demand will be brought in line with one another by scheduling the loading of vehicles and consumption in the social building in complementary time periods. The project will include 150 vehicles, including around 60 large ones, 40 medium ones, and 50 light-weight ones. Out of the planned 50 light-weight vehicles, NET Brussel currently owns 15 electric vehicles. However, all light-weight vehicles will be replaced with electric ones in the near future. As for the larger vehicles, the company is holding out for a cost-effective solution (size – weight – price of battery). The current 350-m2 canopy is modular and allows for future expansion to increase the available surface for solar panels. The technical rooms (high-voltage and low-voltage) are set up to be able to accommodate such future expansion. WATER MANAGEMENT Water management is essential for a site of this size. Various water- consuming activities do not require the use of drinking water such as irrigation, cleaning of the building, washing of service vehicles and the flushing of toilets. In order to deal with this in an environmen- tally-friendly way, the use of drinking water will be restricted due to treatment, storage and reuse of rainwater . The rain water will be col- lected on the surface area of the roof parking spac e and stored in a reservoir for reuse (after filtering). High-performance showers limit water consumption in changing rooms while energy consumption for domestic hot water is reduced at the same time. NATURAL DIFFERENTIATION The soil-remediating trees and plants will be combined with other species. The remediation will progress together with the evolution of the forest ecosystem. The catalogue of trees and plants features differentiation that takes into account the cycles of nature. Extensive management is pursued with a view to spontaneous growth of wild plants and indigenous species. Variation in terms of vegetation structure, colours and scents will ensure the forest continues to be appealing throughout the year. Pinus sylvestris (Scots pine) is selected as main tree species for the layout – the silhouette of this evergreen full of character will enliven the patio in winter. Several indigenous trees including Betula pendula (warty birch), Quercus robur (common oak) and Carpinus betulus (hornbeam) compliment the range and create variation with their various leaf shapes and colours. Prunus avium, Sambucus nigra, Sorbus aucuparia and Populus tremula complement the substrate. Finally, ferns, anemones, hyacinths, geraniums and wild strawberry are used for the herb layer. FORESTED AREA The central space is occupied by a forest. Trees have beneficial effects: a natural filter for flue gases, fine dust and noise emitted by the vehicles, storage of CO2, generating an environment rich in oxygen, a nice and high-comfort working place, a green leisure zone, passive shading and cooling in summer, capturing and processing a variety of polluting substances in the air, life quality in the neighbourhood. RAINWATER RECUPERATION Rainwater from paved areas (5.380m²) is collected in a tank. With an avarage of 800mm/ m² of water per year and a 80% yield, these 3.7 million liters/year will be re-used: 50 large, 38 medium and 15 small trucks water consumption of 10,000 l/day for truck wash 50 showers water consumption of 40.000 liters /day 45 wc´s water consumption of 5.500 liters/day INFILTRATION The large green zones function as a natural rainwater buffer. They increase the absorption capacity of the site so that the sewage network will not be overloaded during rainfall. night day day night SUMMER WINTER ORIENTATION Proper orientation of the building has a major impact on the net energy requirement as well as on users’ thermal comfort. The glazed parts of the social building face the south. The southern orientation ensures that the most frequently used areas (offices and meeting rooms) get plenty of natural light, which minimises the need for electric lighting. INSULATING BUFFER The northern facade of the social building contains a strip of technical and sanitary rooms. Apart from functional reasons, this strip will also contribute to passive cooling and heating of the rooms. In the winter, it will form an additional insulating buffer for the inner rooms. In the summer, opening up the external joinery on both sides of the building cross ventilation is provoked. The air coming in will already be cooler due to the building’s shadow and will provide a fresh flow of air from the north facade to the south facade. BUILDING ENVELOPE The creation of a well-insulated building envelope, adjusted in accordance with users’ needs, will drastically decrease the energy consumption. The thermal transmittance values are similar to those of a passive building: - U-value of glazed joinery: 0,80 W/m2K - U-value of roof: 0,10 W/m2K - U-value of facade: 0,12 W/m2K - U-value of floors: 0,14 W/m2K SUN PROTECTION / COVERED WALKWAYS The treetops and the walkways along the sides of the building provide passive shading to prevent overheating during the summer. In the winter, the sun’s path is lower, and as such, the sun’s beams will be able to penetrate the areas more deeply and thus decrease the energy requirement. During this time of year, the bare trees will not pose any hindrance to the sunlight. WARMTH RECUPERATION FROM VERHICLES AND VENTILATION The indoor parking area must be heated gently when it is freezing outside to keep it free from frost – after all, the vehicles contain reservoirs filled with liq- uids that must not be allowed to freeze. Preheated air from two sources will be reused for heating the main hall: - The warmer air extracted from the parking area. Before the vehicles take off, their engines are run for twenty minutes to preheat them. - The air extracted from the social building during winter. Instead of expelling this warmer air, it is reused. During the summer, the cooler air extracted from the social building will be re- used for the purpose of cooling down the offices. AIRTIGHTNESS Special attention will be paid to the building’s airtightness to prevent loss of heat. Proper airtightness is a must for realising an energy-performing building and adequate thermal comfort. After the building is finished, a blower-door test will be performed. The passive standard values will be determined in advance, most notably a volume rate of 0.6 volumes per hour for positive and negative pressures of 50 Pascal. first phase intermediate phase last phase COMPACT VOLUME The social building is a compact beam-shaped volume. Its compactness results in less heat loss and therefore less heating and cooling will be required. HEAT LOOP A (glycol) aquifer of pipelines will be installed in the driving surface of the rooftop parking area. The surface can be used as a solar boiler during the summer months; the top layer is heated by the sun, and said heat can then be captured and utilised for preheating the hot water supply or can be stored in the soil to be used during the winter. n the winter the hot water in the pipelines keeps driving surfaces frost free. NOW : FEW ELECTRICAL LOAD POSTS Currently only light vehicles are electric and hybrid. Heavy cleaning trucks are not electric due to limitations of current batteries. FUTURE : ELECTRICAL TRUCK FLEET Light structure with solar panels. 13 m² / vehicle, 260 Wp eg: 1500 sqm > 115 cars TV Archiduk- AR-TE- STABO, ZOL Parking G, Genk/Genk Pinus sylvestris Quercus Brich betula Sambucus nigra Carpinus betulus Populus tremula Fragaria vesca Prunus avium Betula pendula Pteropsida Sorbus aucuparia Anemone ranunculoides Anemone ranunculoides CONNECTION TO DISTRICT HEATING A heating grid will be realised in the street in the future, to utilise the residual heat of the factories in the area for the central heating of water. A network of well-insulated subterranean pipes will then ship said heated water to the buildings to be used for heating purposes and as hot water supply. This allows heat that would otherwise be lost to be utilised in a sustainable manner. The current project already includes a space to enable a future link to this heating grid. 05 PLANET GLOBAL LAFARGEHOLCIM AWARDS 2018 TETRA architecten LOGISTICS FRAMEWORK Adaptable structure for a garbage collection company Mouton cvba Boydens nv ARA bvba Structural engineering: Technical engineering: Landscape: STORING ENERGY IN THE BUILDING MASS The waffled structure can achieve large spans of up to 25m. This enables a plan libre and provides flexibility in the implementation of the program. The visible concrete construction will be utilised passively to limit the energy requirement. The storing of energy in the building mass will mitigate unwanted warming or cooling (it will retain heat or cold). This allows for energy to be saved; the (natural) ventilation during summer nights will cool down the building mass so that no additional cooling is needed during the day, and in the winter, solar heat will be stored in that same building mass. The slab thickness of 120cm is capable to support big loads of heavy trucks or light constructions on top. GROUND - WATER HEAT PUMP The heat pump will extract energy from the soil and convert it to levels that can actually be utilised for heating the building. A ground-coupled heat exchanger will be used for cooling in the summer, without additional use of the heat pump. As such, the only energy consumed during the summer will be that used for circulating the water (no compression). The use of the boreholes for both heating and cooling will have a positive effect overall. During the winter, the soil will be cooled down by the extraction of energy for heating. During the summer, this would then result in cooled temperatures and the gradual reheating of the soil in anticipation of the next winter. A lower energy requirement means that low temperature heating and high temperature cooling will suffice. This will be achieved through floor heating and (in the offices) cooling ceilings respectively, combined with a heat pump. FLOORHEATING. low temperature heating CHILLED CEILING PANELS. high temperature cooling 1 8 9 2 4 3 2 2 4 4 1 7 6 5 7 8 9 6 6 6

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