#: locale=de-CH
## Aktion
### URL
LinkBehaviour_AA371CC7_A783_2197_41C5_FFD19E23F56B.source = https://twitter.com/intent/tweet?source=webclient&url=https://empa-virtual.ch/nest/de
LinkBehaviour_10035FCF_0899_FE47_41A1_1DA84F03E344.source = https://www.empa-virtual.ch/nest/de/hilo
LinkBehaviour_9CD319D6_8842_BD2D_41E0_8D3C37534F58.source = https://www.empa-virtual.ch/nest/en/index.htm?skip-loading&media-index=3
LinkBehaviour_AA50F1E6_A781_6389_41C1_9796F44A5DE4.source = https://www.empa-virtual.ch/nest/en/sprint/index.htm?skip-loading
LinkBehaviour_A9ECC4C6_A783_6189_418D_597A1D81A700.source = https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fempa-virtual.ch%2Fnest%2Fde%2F
LinkBehaviour_AA6F2617_A783_E088_41DE_87D74F4DC5DD.source = https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fempa-virtual.ch%2Fnest%2Fde%2F
## Hotspot
### Tooltip
overlay_29130465_26A7_3DAE_41AF_D5B77E21054E.toolTip = A working environment for drone research
HotspotPanoramaOverlayArea_3153FE81_029C_9FDB_4176_6ECC9700CA3E.toolTip = A working environment for drone research
HotspotPanoramaOverlayArea_38890075_2AED_B0DF_41A0_7E3FE1A046A5.toolTip = Acoustic panels made from plastic bottles
HotspotPanoramaOverlayArea_09E0F7C7_2B23_9F41_41A3_79064949BC30.toolTip = Acoustic panels made from plastic bottles
HotspotPanoramaOverlayArea_AAD8B3C8_B0AD_8C01_41AB_453196C1EBAA.toolTip = Adaptive solar façade
HotspotPanoramaOverlayArea_292E3AB8_27BF_59C9_41C3_B13C9255E6EC.toolTip = Aerial view of HiLo
HotspotPanoramaOverlayArea_3E187669_284C_6D59_4196_12DB153B78FE.toolTip = Arno Schlüter, ETH Zurich
HotspotPanoramaOverlayArea_263A1957_3436_BC03_41C6_131D7F2CBBB3.toolTip = Digital logistics chain
HotspotPanoramaOverlayArea_ACE52822_B0FD_7C34_41D7_77A016B3EFBE.toolTip = Electrochromic glass
HotspotPanoramaOverlayArea_0084D2AF_13B3_FDA4_41A8_D4A4324BE43A.toolTip = Flexibly formed concrete roof
HotspotPanoramaOverlayArea_2C963DEE_0D26_9170_419F_E9520A1686BD.toolTip = Flexibly formed concrete roof
HotspotPanoramaOverlayArea_0057D6A2_13B0_C45C_418B_2A46F58AA6BA.toolTip = Flexibly formed concrete roof
HotspotPanoramaOverlayArea_AB90CAF3_B0BF_FC08_41CF_438B274E5CCD.toolTip = Functional integration of building technology in lightweight floors
HotspotMapOverlayArea_1CDED3C0_0C99_460E_419B_336265636EB6.toolTip = Gallery east
HotspotPanoramaOverlayArea_AFFABDC0_B09F_B441_41D8_BB86DB0C7F9C.toolTip = Gallery east
HotspotPanoramaOverlayArea_12C5324B_039F_879F_417E_A6281D1687A2.toolTip = Gallery west
HotspotPanoramaOverlayArea_1D391C93_0394_7C8E_4185_3434E7C5741D.toolTip = Gallery west
HotspotMapOverlayArea_031E7113_0C8F_422D_41A3_7C40A6CE384C.toolTip = Gallery west
HotspotPanoramaOverlayArea_0137815B_1391_DCF0_4163_AF0087868AEC.toolTip = Gallery west
HotspotPanoramaOverlayArea_2CADAE95_0D1E_F3D0_416B_875C8069423E.toolTip = HiLo's direct current grid
HotspotPanoramaOverlayArea_3EDE4255_2AE4_90D9_416C_EA86030C38FB.toolTip = HiLo: «High Performance – Low Emissions»
HotspotPanoramaOverlayArea_37EAB2C2_27AC_E9B4_41B7_5BE8DCCF3DE6.toolTip = Improving building control with machine learning
HotspotPanoramaOverlayArea_28C5A65A_27A7_694B_417F_0BB86AF5CA08.toolTip = Improving building control with machine learning
HotspotPanoramaOverlayArea_2825BE98_3800_4240_41C2_DFE41F9CAAA3.toolTip = Integrated climate system
HotspotPanoramaOverlayArea_288B45F7_27AC_EB5E_41B5_798FFDD76DB8.toolTip = Learning-based control
HotspotPanoramaOverlayArea_29DE06B7_27A7_29D0_41BC_8E627D751D44.toolTip = NEST Backbone Integration \
HotspotPanoramaOverlayArea_017C74D2_13B0_45F8_41B1_42FB5606FC8E.toolTip = Office east
HotspotMapOverlayArea_25D8B79A_315B_DEEE_41A2_F6A0F8AE2D69.toolTip = Office east
HotspotPanoramaOverlayArea_04D90955_1444_10F1_41AE_D6385ABEB119.toolTip = Office east \
HotspotMapOverlayArea_25C3F2A9_312C_561D_41A6_FB1014F79EF0.toolTip = Office west
HotspotPanoramaOverlayArea_BF5B276C_B0EC_9236_41D3_32664BB3A2DB.toolTip = Office west
HotspotPanoramaOverlayArea_01D0EBFB_13B1_C3AE_4180_5C9642DFA628.toolTip = Office west \
HotspotPanoramaOverlayArea_0122F9A4_1390_4C53_412E_9AFE320C2B90.toolTip = Open space
HotspotPanoramaOverlayArea_052A8798_144C_307F_41A1_6829B49E1092.toolTip = Open space
HotspotPanoramaOverlayArea_34CBBD2B_2649_AA7B_41BE_ACB7993739B0.toolTip = Open space
HotspotPanoramaOverlayArea_02C993C5_1370_43D0_41B1_CBE9A5C4A7B4.toolTip = Open space
HotspotPanoramaOverlayArea_00015865_13B1_CCDA_41A1_954728C40167.toolTip = Open space
HotspotMapOverlayArea_22617C90_3134_517F_41AF_BCCF8138AB28.toolTip = Open space
HotspotPanoramaOverlayArea_0D97216E_0275_8599_4175_C6B54B999039.toolTip = Open space
HotspotPanoramaOverlayArea_1EA5B51B_03FF_8DBF_4186_92258C50410F.toolTip = Open space \
HotspotPanoramaOverlayArea_3F1E9C1F_2844_3CF9_41C3_601DF6184EFF.toolTip = Philippe Block, ETH Zurich
HotspotPanoramaOverlayArea_AB636B8C_B095_FC08_41D4_405050E2AABD.toolTip = Rib-stiffened funicular floor system
HotspotMapOverlayArea_22CCA3DF_315C_5664_41BD_FC6FA5D2AA51.toolTip = Technical room
HotspotPanoramaOverlayArea_02D44406_1291_C43C_41AE_BDA4F287EA2A.toolTip = Technical room
HotspotMapOverlayArea_1E5C2864_0CFA_C273_4199_7F1CC9432D47.toolTip = Terrace
HotspotPanoramaOverlayArea_0122ABDB_13B0_43E9_41A9_9C8F18831B09.toolTip = Terrace \
HotspotPanoramaOverlayArea_9C995D35_8686_0E9F_41C9_D6258FA45B37.toolTip = Two-story working environment
## Media
### Floorplan
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map_03F9AC5D_0C89_42DE_4198_41AB497FF845.path = null
### Image
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### Popup Image
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### Titel
video_A4106219_85D9_3CFB_41E0_7DC92607C217.label = 60-Sprint_Einzelbuero-Ziegel
panorama_29E9B06C_0294_8329_419D_29299531FFC6.label = 66_HiLo-Begegnungszone
video_19F92376_1693_1B1F_419F_FC20E99FA683.label = 66_HiLo-Begegnungszone 2 (VR2 Edit 1)_eng
panorama_2913F465_26A7_3DAE_41BD_C68AE82F231B.label = 67_HiLo-Büro Ost New
panorama_290EF9CD_26A7_56F9_41A9_740627E7ABA3.label = 68_HiLo-Büro West
panorama_24125F01_0294_7D8B_4159_86853B561E67.label = 69-HiLo-Gallerie-Ost
panorama_24087FB6_0295_FC89_418E_90882AF4B0CF.label = 70_HiLo-Gallerie-West
panorama_24202BA3_0295_848F_4175_60A4BB5FA882.label = 71-HiLo-Technikraum
panorama_243F4A7A_0294_847E_418C_9F6EA0B9B734.label = 72_HiLo-Terrasse
album_2AEEFDDC_2657_AA21_41B4_733AA4FE2A21.label = Fotoalbum U_HiLo_68_a_Bild1_HiLo_floor_01_Nick-Krouwel
album_1668B5C5_3AA6_66CA_41C7_CA7F3086A9B9.label = Fotoalbum U_HiLo_69_c_Bild_Improving building control with machine learning
map_0145D8AE_0C87_4380_41A6_2A928BAC0699.label = HiLo - Ground Floor
map_03F9AC5D_0C89_42DE_4198_41AB497FF845.label = HiLo - Upper Floor
video_38910E0F_029D_9EE7_4192_A7AD52C4F251.label = U_HiLo_66_a_Video_Dachkonstruktion inkl Textile Schalung_EN
video_3810C83F_2B1F_B047_41BD_1C56B80E00AA.label = U_HiLo_66_d_Video_211005_05A-Empa_HILO_FILM_Musik-Grafik_skaliert_EN
video_3B7858F6_2AE4_91DD_419D_E03152D9E2BC.label = U_HiLo_66_e_Video_Akustikpanele_EN
video_46D231F4_4AB5_8FF9_41CE_4F565080B844.label = U_HiLo_67_a_Video_Funicular Floor
video_4A804723_0D97_8ED9_4189_9D962A8FC2C1.label = U_HiLo_67_b_Video_Adaptive Solarfassade_DEundEN
video_079BD0FA_11A9_6785_4194_2E4DC2D9077F.label = U_HiLo_67_c2_Text_Benutzung_EN_Kovac_English_1080p
album_2AEEFDDC_2657_AA21_41B4_733AA4FE2A21_0.label = U_HiLo_68_a_Bild1_HiLo_floor_01_Nick-Krouwel
album_2AEEFDDC_2657_AA21_41B4_733AA4FE2A21_1.label = U_HiLo_68_a_Bild2_HiLo_floor_02-a_Juney-Lee
album_2AEEFDDC_2657_AA21_41B4_733AA4FE2A21_2.label = U_HiLo_68_a_Bild3_HiLo_floor_02-b_Juney-Lee
album_2AEEFDDC_2657_AA21_41B4_733AA4FE2A21_3.label = U_HiLo_68_a_Bild4_HiLo_floor_03_Juney-Lee
album_1668B5C5_3AA6_66CA_41C7_CA7F3086A9B9_1.label = U_HiLo_69_c_Bild2_Improving building control with machine learning
album_1668B5C5_3AA6_66CA_41C7_CA7F3086A9B9_0.label = U_HiLo_69_c_Bild_Improving building control with machine learning
video_4144ED62_4AB5_9419_4199_C891C209BAC3.label = U_HiLo_70_a_Video_Digitale Logistikkette_EN
### Untertitel
panorama_24125F01_0294_7D8B_4159_86853B561E67.subtitle = NEST-Virtual
panorama_2913F465_26A7_3DAE_41BD_C68AE82F231B.subtitle = NEST-Virtual
panorama_290EF9CD_26A7_56F9_41A9_740627E7ABA3.subtitle = NEST-Virtual
panorama_29E9B06C_0294_8329_419D_29299531FFC6.subtitle = NEST-Virtual
panorama_24087FB6_0295_FC89_418E_90882AF4B0CF.subtitle = NEST-Virtual
panorama_24202BA3_0295_848F_4175_60A4BB5FA882.subtitle = NEST-Virtual
panorama_243F4A7A_0294_847E_418C_9F6EA0B9B734.subtitle = NEST-Virtual
### Video
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### Multiline Text
HTMLText_10264EC1_3AAD_A2C7_41C0_05BD803B5BBB.html = Improving building control with machine learning
Control strategies can play a key role in the management of building assets. System operations can be optimized according to a cost function, which can be represented by the indoor environmental quality (IEQ), energy savings or a combination of metrics. The hybrid approach takes a set of systems (e.g. heating, ventilation, and air conditioning) and searches for operational synergies in terms of energy efficiency and occupant comfort. Most recent control strategies are based either on a model predictive approach or artificial intelligence. At HiLo, the Architecture and Building Systems group, in collaboration with the Mitsubishi Electric R&D labs in the UK and Japan, have implemented the use of data-driven machine learning and algorithms to enhance the hybrid control of the building’s systems.
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A working environment for drone research
The HiLo unit offers several office spaces as well as a generous co-working space. The rooms will be used by Prof. Mirko Kovac's team for robotics research at the Empa, which is studying the use of drones in building maintenance. One of the applications of this research is to complement tasks in which human workers are exposed to enormous risk of accidents with drones – since they perform safely and efficiently even in danger zones or places that are difficult to access.
As a living lab, NEST is ideally suited for observing drones and robots at work – in scientifically analyzable yet real-life situations. Being a dynamic building that is subject to constant reconstruction processes, NEST also offers a wide spectrum of tasks on which the infrastructure robotics developed on site can be tested, further developed and validated.
Acoustic panels made from plastic bottles
Acoustic panels from Impact Acoustic are used in all of HiLo's interiors. In manufacturing the panels, the company relies on upcycling disposable plastic bottles. Each square meter consists of around 88 recycled PET bottles.
Adaptive solar façade
The adaptive solar façade developed by the Architecture and Building Systems Group at ETH Zurich has been designed to exploit the potential of the building façade as an interface between inside and outside: Using rotatable, lightweight thin-film photovoltaic modules, it can continuously react to its environment by constantly optimizing the orientation of the modules on horizontal and vertical axes. At the same time, the modules are used to control the shading of the interior and the transparency of the façade to control solar gains, to allow passive heating or reduce cooling demand, and to ensure comfort. This can be done manually, but also automatically: The façade uses learning algorithms that learn to adapt optimally to the needs of the occupants while minimizing energy demand. It acts as an integral part of the building system, in interplay with other building technology components such as lighting, heating, and ventilation.
Digital logistics chain
At the HiLo construction site, the NEST partners Bouygues Energies & Services and R. Nussbaum AG were able to evaluate and further develop their digital logistics chain – from planning and production to installation.
Electrochromic glass
The light and temperature conditions of indoor spaces play a major role in the perceived comfort of the occupants. However, comfort and minimization of energy costs are often opposing requirements. The electrochromic glass from Saint-Gobain SageGlass aims to reconcile these two needs. According to the light conditions, the intelligent glass automatically darkens without losing its transparency. This way, maximum daylight can be combined with effective solar and thermal protection – all the while maintaining unrestricted visibility. This allows the maintenance of comfort and also an enormous saving in air-conditioning costs - especially in spaces which, like the NEST unit HiLo, have a high solar radiation.
SageGlass technology consists of an intelligent control system and dynamic solar control glasses. When a heat source activates the electrochromic coating of the glasses, the glass darkens. If no heat hits the glasses, they remain clear.
SageGlass was already installed in the NEST unit Meet2Create in 2016. At HiLo, a new "Neutral Clear" feature, which achieves a color rendering index of 97% in the brightest state, was implemented. The improved color rendering will additionally contribute to the comfort of HiLo's residents. Flexibly formed concrete roof
HiLo’s roof is a doubly curved concrete sandwich structure consisting of two thin layers of reinforced concrete of only five and three centimeters thick. Spaced ten centimeters apart by insulation blocks, the layers are connected by a grid of thin compressive stiffening ribs and vertical tension rods. Combining this lightweight two-layered structure with the strength derived from its highly curved geometry, the roof stands freely on five supports, covering an unobstructed space of 120m².
Non-standard concrete structures require custom formworks that typically use massive amounts of cut timber or milled foam as shuttering. The production of such single-use moulds is costly and wasteful. HiLo's roof structure was instead built using a flexible formwork, based on a largely reusable kit-of-parts. The primary structure of the formwork is a cable net consisting of individually cut cable segments connected at custom-designed nodes, tensioned within a wooden boundary frame. A thin fabric membrane is stretched over the cable net and connected to the nodes to form a taut surface onto which the concrete can be cast or sprayed.
All key details of the system were worked out through prototyping in collaboration with experts and partners from industry. The principles of the developed solutions were integrated into a flexible design-to-fabrication workflow implemented with COMPAS, the open-source computational framework for research and collaboration in Architecture, Engineering and Construction (AEC). The latter served as a central hub for the computational development, coordination and planning of the key innovations and provided an effective research-to-practice transfer mechanism.
Functional integration of building technology in lightweight floors
Multifunctional elements can perform several roles simultaneously, such as energy and structural aspects. As opposed to traditional sequential design, in which each building element serves a single purpose. The former methodology requires integrated design and digital fabrication approaches to prioritise renewable energy sources and the reduction of construction materials.
An embedded heating and cooling network informs the contours of the striking ceiling surface while introducing an innovative architectural feature. This approach provides a highly efficient radiant panel due to the thinness of the concrete structure. The thermal performance is further enhanced by coupling with the ventilation system. An optimised duct geometry, using 3D printing, is placed within the structure at the ideal supply location. Four jets of fresh air attach to the ceiling and distribute air inside the room using a mixing strategy, satisfying the occupant's comfort needs with minimised energy usage.
The structural concept of the funicular floor was developed by the Block Research Group. The multifunctional system concepts and the digitally fabricated formworks were created by an interdisciplinary team from Architecture and Buildings Systems and Digital Building Technologies at ETH Zurich.
HiLo's direct current grid
Normally, electricity produced by PV modules is converted from direct current (DC) to alternating current (AC) using inverters. At HiLo, a different approach has been chosen: The DC energy from the unit's PV modules is left unconverted and directly fed into HiLo's 760V DC grid. The reason for this choice is that many of the Unit's components require DC power, not AC power. These include the LED lighting, IT infrastructure, and HVAC actuators and sensors. By omitting the conversion to AC and back to DC, conversion losses can be avoided.
Since solar energy is only available during the day, batteries are used as intermediate storage. This technology will be installed at this position and launched soon.
HiLo: High Performance – Low Emissions
The construction industry is responsible for a large share of global resource and energy consumption and greenhouse gas emissions. At the same time, the construction sector is faced with a constantly growing world population. Following the principle of "High Performance – Low Emissions", NEST's HiLo unit demonstrates how attractive architecture can be when combining energy- and resource-saving construction and operation. The unit brings together innovative planning and design methods for efficient structures in concrete with self-learning and adaptive building technologies. The integrated design and fabrication approach used to build the two-story unit marks a starting point for the way we may design and build in the future.
The unit on the top platform of Empa's and Eawag's NEST research and innovation building was realized by ETH Zurich's Block Research Group and the Architecture and Building Systems Group in cooperation with numerous industrial partners.
Use: Two-story working environment
Opening: October 2021
Partners: ETH Zurich, ETH Foundation, Autodesk, Belimo, Bouygues Energies & Services, Schweiz AG, Bürgin Creations, Debrunner Acifer Bewehrungen AG, Doka Schweiz AG, Feller AG, Flisom AG, Haworth, Holcim (Schweiz) AG, Impact Acoustic AG, Künzli Holz AG, Marti AG Bauunternehmung, Mensch und Maschine, Mitsubishi Electric R&D Centre, Europe B.V., Pletscher Metallbau, R.Nussbaum AG, ROK, SageGlass, Sika AG, Vetrotech
Hoch- & Tiefgestellte Zeichen
Hochgestellt:
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Liste unter: https://de.wikipedia.org/wiki/Unicodeblock_Hoch-_und_tiefgestellte_Zeichen
Hochgestellt:
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Integrated climate system
Thermally active building systems (TABS) integrate hydronic pipework within a structural element to create a radiant panel. By activating large surfaces, heating and cooling can be provided with a supply medium that is near room temperature, which is compatible with renewable geothermal sources. During the operation phase of the building, this approach is more energy efficient, generates less equipment noise and provides an improved vertical air temperature distribution compared to air-based space conditioning systems. Moreover, the Architecture and Building Systems group has employed interdisciplinary design methods and taken advantage of a lightweight structural geometry to generate significant embodied and operational energy savings. These benefits are realised by using less space while performing several functions simultaneously, such as energy, architectural and structural aspects.
Learning-based control
The energy concept of HiLo is consolidated by an occupant centered control system, which targets optimal operational energy efficiency without compromising on user comfort. This objective is achieved by connecting all of the thermal and electrical data to a programmable controller, where researchers can investigate novel high-level control strategies, involving machine learning and artificial intelligence. The hybrid approach takes a set of systems (e.g. heating, ventilation, and air conditioning) and searches for operational synergies in terms of energy efficiency and occupant comfort. The development of hybrid control algorithms for the HiLo building system is made possible thanks to the collaboration with the research partner Mitsubishi Electric R&D Centre Europe B.V.
NEST Backbone Integration
HiLo is also a node in the NEST district energy hub (ehub) which enables the harvesting, storage, conversion and transferring of energy. Each building unit is connected to the ehub using multiple thermal and electrical grids. These grids operate in both directions, which allows surplus energy to be transferred between building units or to the ehub, such as solar thermal and electrical gains from HiLo. Rib-stiffened funicular floor system
Traditional concrete floor slabs working in bending typically consist of a solid section of concrete reinforced with large amounts of steel. In contrast, the innovative HiLo floors use a thin, doubly curved funicular shell with vertical stiffeners to transfer loads to the supports through compression forces only. The forces are accumulated in the corners, where their outward thrust is absorbed in post-tensioned ties.
By placing material only where it is structurally needed – following the flow of forces in compression and tension – and keeping all materials separable, the HiLo floor system saves more than 70% of concrete and 90% of reinforcement steel compared to the standard reinforced concrete slab, and allows for easy recycling at its end of life.
Furthermore, the floors' funicular geometry results in low stresses in the structure, which allows the use of low-strength materials with a low carbon footprint, and even of construction demolition waste – as opposed to using scarce natural resources.
The HiLo floors are a first demonstration of these principles in a real-world building and provide an outlook at a real, disruptive opportunity to the construction industry for dramatically reducing carbon emissions – simply by replacing a wasteful component in the buildings all around us.
Two-story working environment
HiLo extends over two floors and is characterized by the research projects that give the unit its character: a flexibly formed concrete roof, lightweight floors and an adaptive solar façade. It offers several office spaces as well as a generous co-working space.