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UNI/TS 11300-4 PDF Stampa
Scritto da Rodigari Mario   

14 Maggio 2012

Pubblicata la UNI/TS 11300-4

E’ stata pubblicata da UNI la UNI/TS 11300-4 ―Prestazioni energetiche degli edifici – Parte 4: Utilizzo di energie rinnovabili e di altri metodi di generazione per la climatizzazione invernale e per la produzione di acqua calda sanitaria‖ elaborata dal gruppo di lavoro del CTI GL 601 ―Impianti di riscaldamento – Progettazione, fabbisogni di energia e sicurezza (UNI/TS 11300 -2 e 11300-4).
La specifica tecnica, che si rivolge alle autorità competenti, ai progettisti, direttori lavori e certificatori energetici, calcola il  abbisogno di energia primaria per la climatizzazione invernale e la produzione di acqua calda sanitaria nel caso vi siano sottosistemi di generazione, che forniscono energia termica utile da energie rinnovabili o con metodi di generazione diversi dalla combustione a fiamma di combustibili fossili trattata nella UNI/TS 11300-2 ―Prestazioni energetiche degli edifici – Parte 2: Determinazione del fabbisogno di energia primaria e dei rendimenti per la climatizzazione invernale e per la produzione di acqua calda sanitaria.
Sono quindi considerati i seguenti sistemi per la produzione di energia termica e/o elettrica:
- Impianti solari termici
- Impianti solari fotovoltaici
- Pompe di calore a compressione di vapore e ad assorbimento
- Cogeneratori
- Generatori alimentati a biomasse
- Sistemi di teleriscaldamento

La UNI/TS 11300-4 va, quindi, a completare la UNI/TS 11300-2, fornendo metodi di calcolo univoci per la misura delle prestazioni dei suddetti sistemi di generazione nelle condizioni effettive di funzionamento.
Essa ha anche lo scopo di recepire i metodi delle norme europee elaborate sotto il mandato M/343 e di completarli laddove necessario, come ad esempio nel caso delle pompe di calore, in merito alle quali è descritta una più accurata e precisa metodologia per il calcolo dei fabbisogni, mantenendo come riferimento il quadro legislativo costituito dalla Direttiva 2002/91/CE, dal DLgs 192/05, dal DLgs 311/06, dal DPR n. 59/2009 e dal DM 26-06-2009.

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e 2012
Desigo V5: Innovations from Siemens increase building efficiency
The Siemens Building Technologies Division has introduced version 5 of its Desigo building automation system. Its innovative products such as Total Room Automation as well as efficiency features, like RoomOptiControl and Eco Monitoring, give building operators and users an active role in energy management, leading to permanent reductions in energy and maintenance costs.
A state-of-the-art building automation system is always optimized for energy-efficient operation. However, these optimized settings may start to drift over time. One of the underlying causes is often a lack of transparency for users who simply don't know how the setpoint changes they make can impact energy consumption. This is particularly true for air-conditioned rooms which are also equipped with lighting and sun protection controls. The new version of Desigo keeps room users and building operators apprised of the building's efficiency status. Feedback to users is given using the innovative Green Leaf display, adapted to the expertise and control options of each user group. The system makes it possible to change settings if needed to restore optimal energy efficiency. A study by Technische Universität München (TUM) indicates that by actively involving operators and users in the energy management of a building, energy consumption can be reduced by up to 25% without affecting comfort.
Total Room Automation offers energy savings without reducing comfort
The open, programmable room automation range Desigo Total Room Automation (TRA) is a holistic solution encompassing the HVAC, lighting and shading disciplines. Desigo TRA uses an innovative efficience feature called RoomOptiControl. It automatically detects unnecessary energy consumption in the room and notifies users by changing the color of the Green Leaf icon on the QMX3 room control unit: If room operations are energy efficient, this icon is green. If settings made by a room user lead to unnecessary energy consumption, the icon turns red. To reset room control to energy efficient operation, the user simply presses the display and the Green Leaf icon returns to green.
Using BACnet/IP, PXC3 room automation stations—also part of the TRA package—are integrated seamlessly into the PX automation level with its primary systems (heating generators, HVAC main units and cooling generators). The primary systems are controlled directly through the demand signals from the rooms. This means that the primary systems are only turned on if needed and their operation is adjusted so it meets the room requirements without exceeding them. One room automation station can cover multiple rooms. TRA offers complete integration of KNX, DALI and EnOcean devices; existing or new sensors and actuators from Siemens can be incorporated as well.
Eco Monitoring to reduce energy consumption and wear
Eco Monitoring is another innovative efficiency feature of Desigo. It monitors ongoing operations of HVAC systems based on energy-related quality condition indicators such as readings from temperature, humidity and pressure sensors, runtime, switching behavior and operational performance of the systems. Should deviations from the target state, inefficient operations or increased energy consumption occur, the building operator is notified via the Green Leaf display on the Desigo Insight management station. Current and future international standards (such as EN 15323:2007) require such a feature in order to optimize building operations over the long term.
Desigo Eco Monitoring not only helps optimize energy consumption, it also reduces wear. Thanks to its dynamic behavior and timely reporting, the Eco Monitoring feature recognizes unfavorable system operations early on, allowing operators to intervene immediately before any negative impact occurs. If desired, operators can choose to be notified of unusual events via text messaging (SMS), fax or e-mail.
Expanded networking of the automation level
Starting with version 5, Desigo also offers expanded end-to-end networking of the automation level. Enhanced support for communications standards ensures efficient system integration. The PXC series of compact automation stations has a higher number of universal inputs/outputs, which makes them much more flexible. To protect existing investments, different device generations, such as PTM and TX I/O modules and RXC room controllers, can be used in parallel on the same PX automation station.

Ultimo aggiornamento Lunedì 14 Maggio 2012 19:51