of three demonstration buildings – located in Verona, Stuttgart and Madrid- before and after renovation. The efficacy of several energy renovation measures and the efficiency of the new HVAC systems will be compared with the baseline, which was assessed before renovation.. As part of this process,
iNSPiRe has
already produced a document to describe the design and development of the distributed monitoring system, which was used to establish communication with sensors and monitoring hardware in operation. The aim has been to ensure the availability of the required information for a detailed supervision of the building, so
that renovation packages can be
exactly matched to a particular building’s renovation requirements.
Lighting A key feature of any renovation package for older buildings is the integration of lighting solutions. Lighting is a major user of energy in buildings (mainly in offices) and for iNSPiRe to achieve the goal of reducing energy consumption in older buildings by 50 per cent, new lighting systems will need to be built
into the
renovation packages. Within iNSPiRe, the company
Bartenbach LichtLabor has published an analysis that provides a detailed look into the characteristics and properties of common light sources and luminaires. It also describes contemporary lighting systems and forecasts near future evolutions based on different references. It compares halogen, CFL and LED solutions, both in lamps and luminaires. Recommendations of lighting systems to be used for both residential and office application have already been made and these provide a clear roadmap for a significant aspect of the proposed renovation packages iNSPiRe is devising.
Building envelopes – the iNSPiRe solution The purpose of the project is not only to develop the best renovation strategies for given buildings, but also to elaborate a number of technologies that ease the whole refurbishment process. Looking at the problem from the envelope perspective, the work mainly involves the development of envelope kits that will be retro-fitted to older buildings. These façades and roof elements will include heating, natural lighting and energy systems to be used in the building and it is this systemic approach to renovation that is the novel
www.projectsmagazine.eu.com 99
nature of iNSPiRe. The project will produce four façade kits in total: two metal/glass for tertiary purposes and two wooden façades
for domestic purposes.
The four façades feature different solutions that include the integration of HVAC (heating and cooling ventilation system) and the integration of thermal and energy storage systems.
Microheat pump In order to include a heating system into the insulation element of the new façades, iNSPiRe has devised a novel micro heat pump (µHP) system. The prototype, developed by SIKO Solar, is an extract air-to-air model
includes an absorption chiller. This captures solar energy, which is stored inside the component and is then delivered when needed for both air conditioning and heating. The component has no moving parts and
is built using totally inert materials. It works using ClimateWell’s patented triple- state absorption technology, using a specially formulated salt to store the energy. Cooling efficiencies are typically 50-60 per cent and the energy storage capacity is high enough to store a whole day of solar irradiation. This work relates to iNSPiRE in the
in combination with a
mechanical ventilation with heat recovery system (MVHR). The innovative element here is the integration factor: The micro heat pump will be prefabricated in a wooden-frame façade module from Gumpp & Maier; because the heat pump must form part of a non-intrusive façade of the renovated building, it is significantly smaller than a typical heat pump, both physically (less than 30 cm thick) and in heating capacity terms (around 1kWth). This system is currently being tested in the lab and will be fully integrated into the novel façades currently part of the demonstration work being carried out in Stuttgart.
Solar thermal chiller Another novel component of the iNSPiRe renovation packages will be the use of solar energy integrated into the façades of buildings. Over the last five years, the Swedish company ClimateWell has been working on a solar thermal collector that
prefabrication of the solar thermal component into a metal-glass façade module for office buildings by Officine Tosoni. On the one hand researchers are analysing
the performance of such
a
component when set up in different applications and climates. Meanwhile, industry will tackle any integration and installation issues.
Buildings energy generation and distribution Along with the envelope solutions, iNSPiRe is elaborating packages with the aim of replacing old, centralised heating and cooling systems with new energy generation systems that largely make use of renewable energy sources. Inefficient gas or oil boilers contribute a great deal to the primary energy consumption within the built environment, so replacing these will allow us to cut energy consumption by more than 70%. However, these new systems are often more complex, in terms of number of components and their integration, and more expensive than the older systems, so iNSPiRe researchers
Wooden wall with prefabricated micro heat pump under test at Passys test facility (University Innsbruck)
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