netværk: : Integrerede lavenergiløsninger til nye bygninger

Transkript

1 LavEByg-netv netværk: : Integrerede lavenergiløsninger til nye bygninger Status strategiudvikling for: Ventilationsanlæg Lavenergikoncepter

2 Delområde: Ventilationsanlæg Beskrivelse af delområdet Ventilationsanlæg, dvs. relation mellem ventilationsanlæg og energiforbrug er opdelt i følgende punkter: Energiforbrug til lufttransport Energiforbrug til opvarmning af ventilationsluften Energiforbrug til fjernelse af overskudsvarme Ventilationsanlæggets effektivitet

3 Behov for Forskning og Udvikling Energiforbrug til lufttransport Reduktion af tryktab: Efteruddannelsesaktiviteter samt forskning i bedre strømningsteknisk udformning af komponenter og anlæg. Bedre ventilatorer: Analytiske metoder til fastlæggelse af geometri og øget brug af CFD i produktudviklingen. Motorer og tilhørende reguleringer: Internationalt samarbejde omkring forbedring af virkningsgrad for det samlede system.

4 Behov for Forskning og Udvikling Energiforbrug til opvarmning af ventilationsluften: Forskning i optimering af energiforbrug og indeklima ved forskellige former for varmegenvinding. De forskellige teknologiske barrierer skal nedbrydes. Forskning i udnyttelse af bygningens overskudsvarme til forvarmning af ventilationsluften.

5 Behov for Forskning og Udvikling Energiforbrug til fjernelse af overskudsvarme: Forskning i tilførsel af luft ved meget lav temperatur Forskning i mere effektiv natkøling af bygninger Forskning i kontrolleret effektiv afkøling af bygningskonstruktioner med udeluft

6 Behov for Forskning og Udvikling Ventilationsanlæggets effektivitet: Potentialet for energibesparelser ved personlig ventilation skal undersøges ved pilotinstallationer. Forskning i brug af forskellige parametre som input til behovsstyret ventilation der tænkes her ud over temperatur og CO2 på fugt eller luftkvalitet, fx MISO styring/regulering (Multiple Input Single Output). Forskning i optimering af luftfordelingsprincipper for behovsstyring af ventilation

7 LavEByg-netv netværk: : Integrerede lavenergiløsninger til nye bygninger Status strategiudvikling for: Ventilationsanlæg Lavenergikoncepter

8 Integrated Building Approach An integrated building concept includes all aspects of building construction (architecture, facades, structure, function, fire, acoustics, materials, energy use, indoor environmental quality, etc ). An integrated building concept can be regarded to consist of three parts: the architectural building concept, the structural building concept the energy and environmental building concept Architectural Architectural Structural Energy and Environmental Energy and Environmental Structural IBC Structural

9 Design Strategy and Technical Solutions

10 Design Methods and Tools Five main categories of design methods and tools have been identified Design process methods/tools give guidance on organisation of the design process. Design strategy methods/tool Give guidance on the development of an Energy and Environmental Building. Design support methods/tools Tools used in the early stages of the design to guide the designer to the most promising approaches and technical solutions. Design evaluation methods/tools Tools used later in the design process to check the performance of a design concept. Simulation tools Used in all stages of design in order to predict the performance of the building and technical solutions. Architectural Energy and Environmental Structural IBC

11 Classification of Low Energy Building s Category Parameter Climate Cold, moderate, warm, hot-dry, hot humid, Context Urban, suburban, rural Building use Office, school, residential,... Building type High-rise, low-rise, row-houses, single houses, multifamily buildings,... Demand reduction strategies Thermal insulation, air tightness, buffering, reduction of heat and contaminant loads, building form, zoning, demand control, efficient air distribution, solar shading,.. Control strategy Natural mechanism, adaptive/rigid, user control/automatic Renewable energy Passive and active solar heating, wind, natural cooling, technologies geothermal heat/cool, biomass, dayligthing, natural ventilation,.. Efficient energy conversion District heating, District cooling, CHP, HE gas boiler, heat pump, External energy supply system

12 Selected Low Energy Building s The Passive House concept which mainly focuses on super insulated and air tight envelopes combined with high efficiency heat recovery The Solar House concept which mainly focuses on utilization of renewable energy technologies such as passive and active solar heating and solar cells The Smart House concept which mainly focuses on advanced intelligent solutions for demand control and efficient use of fossil fuel technologies The Adaptive Building concept in which building elements actively respond to changing climate conditions and indoor environmental conditions as required by the occupants

13 Scenarios for New Low Energy Building s Urban Office Building School Building (Single Family House ) Urban Apartment Block Urban mixed use Building (apartments, offices,..)

14 Næste skridt Ventilationsanlæg Indarbejde status for komponenter, anlæg, styring og regulering Definere og prioritere delmål for indsatsen Initiere og opbygge samarbejdskonstellationer Initiere F&U projekter Lavenergikoncepter Definere 2-3 bygningskategorier med tilhørende betingelser Opstille scenarier for lavenergikoncepter for hver bygningskategori Definere F&U behov og delmål inklusiv prioritering af indsatsen Initiere og opbygge samarbejdskonstellationer Initiere F&U projekter