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A novel modular technology paves the way for a potential 50% decrease in energy bills of public buildings

Retrofitting present buildings with good enough state of the art applied sciences is assumed to promises impressive energy financial savings, by means of about 50%. The purpose of the EU funded venture BRICKER is strictly to show such chance. Luigi Crema, a physicist who’s the head of the Applied Research on Energy System (ARES) team at the Bruno Kessler Foundation, a non-public basis devoted to analyze and regulated by means of the Province of Trento, in Italy, talks to youris.com about the demanding situations of making use of sun applied sciences to good buildings, good communities and good towns.

Choose 3 key-words to explain your method
Without a doubt the 3 guiding rules are: performance, effectiveness, and modularity. Efficiency is taken for granted. Systems in response to renewable assets obviously need to compensate the prices had to produce the energy. Effectiveness signifies that you wish to have to make certain that the shopper’s wishes and expectancies are fulfilled. End-users need in an effort to use the energy when they want it, now not when technology or nature – in the case of renewable energy – can give it. Finally, modularity: each and every web site is geographically dispensed, has other traits, and other wishes and must be furnished with a device this is good enough for a given location. If those 3 traits are fulfilled, this technology is no doubt a profitable one.

What are the methods followed to scale back energy intake?  
The technique comes to enforcing other lively energy manufacturing mechanisms for huge public buildings. It depends upon two renewable energy assets: concentrated solar energy and biomass. The thought is to enroll in them in a hybrid co-generation device, the use of a technology referred to as Organic Rankine Cycle (ORC). This is composed of a turbine activated by means of an natural fluid, running at a lot decrease temperatures than the ones of the same old vapour or fuel generators. The device makes it conceivable to decrease dependence on fossil fuels. In parallel, different companions in the venture center of attention on passive applied sciences—this is, the integration of extra environment friendly fabrics or parts that permit energy financial savings.

How does a concentrated solar energy device paintings?
Nowadays, we use two primary applied sciences to generate electric or thermal energy from sun energy. One is the commonplace photovoltaic device and the different is named concentrated solar energy, or CSP. As the identify suggests, that is when sun radiation is targeted onto a receiver, a hollow space or soaking up subject matter to transform it into warmth. The warmth generated can succeed in very top temperatures, even 800ºC or 1,000ºC at the level the place the radiation is targeted. The ratio may also be of a thousand to 1 or much more, which means that that the radiation from the reflecting surfaces may also be concentrated onto a point of interest; a thousandth of the floor of the mirrors.

What type of concentrated solar energy technology are you the use of for the venture?
We are the use of parabolic trough creditors that monitor the place of the solar and listen sun radiation onto a tube of restricted dimensions, the receiver. This technology is designed to be simply adaptable to the roofs of huge buildings. The tube acts like a so-called black frame which absorbs radiation with best a minor fraction re-emitted. An natural fluid flows inside of the tube and it could possibly succeed in a temperature of about 250 ºC. The key level is this temperature is maintained consistent in the loop because of a biomass boiler at once hooked up to the sun device.

The factor is that the solar is an intermittent supply. Therefore, a consistent provide of radiation to the receiver isn’t assured. On a wet day or at evening, then, the fluid temperature would drop and the sun device would now not be environment friendly. So the hybrid device is conceived to permit a small energy accumulation that covers the time required for the biomass boiler to be activated to compensate for the lacking energy from the solar. 

What was once your function in the venture?
The energy financial savings may also be completed via other designs. We have to spot the easiest configuration of the modules of energy programs to ensure efficiency–minimal energy loss–in each and every web site. Our function is to decide the optimum configuration of the device by means of introducing experimentally measured knowledge.  We have to ensure a strong technology of energy with variable energy call for profiles. We name this technique ‘dynamic modelling’ and it supplies a digital type of the functioning of the device. This is how we known the other wishes of the 3 exhibit initiatives. One of the targets of the venture is to suggest a modular technology that may fit the wishes of other places.  

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