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energy consumption

To date, building certification standards have not taken into account the energy saving potential of every aspect relating to the automation and control of buildings’ energy consumption. The eu.bac methodology, based on currently applicable standards (EN 15232, DIN V 18599) and scientifically validated by the Technical University of Dresden (Germany), aims to fill this void. This article describes the success story of the hotel Pago del Olivo, demonstrating the savings potential that can be achieved in a building designed for hotel use following the application of this methodology.

Opened in January 2011, the hotel Pago del Olivo is a three-star establishment located in Simancas (Valladolid), offering 36 rooms, a 70 m2 lounge as well as indoor and outdoor car parking. Sedical undertook the certification, for which end an authorised inspector visited the establishment. Using a standard questionnaire, filled out by the owner, the person responsible for the building or the systems integrator, the authorised inspector checked to see if the stated functions were available and active.

 

Following a study of the documentation and the site inspection to check on the existence and type of control equipment, as well as ensuring it was working properly, the audit produced a score of 22 points with an E rating under the eu.bac system. The calculation tool also indicated that the installation had a margin for improvement of 78 points. Read more…

Article published in: FuturENERGY June 2017

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Renewables avoid € 87 billion of energy costs

On 15 May 2017, EurObserv’ER released the report “State of Renewable energies in Europe 2016”. Main findings of this report include: gross final energy consumption in the EU-28 increased by 2.2% between 2014 and 2015 (from 1,097.7 to 1,121.4 Mtoe), after suffering an exceptional 4.2% drop over the previous twelve-month period.

The actual share of renewable energies in EU’s total electricity generation rose from 28.2% in 2014 to 28.9% in 2015 (+0.7%) while overall output rose from 3,190.8 TWh in 2014 to 3,234.3 TWh in 2015.

 

Increased renewable energy work force in 2015

EurObserv’ER assumes a growing renewable energy work force of 1.139 million persons employed throughout the EU for ten monitored RES technologies, a growth of 10,000 jobs compared to 2014. The combined turnover of 10 renewable energy sectors in all 28 EU member states reached € 153 billion in 2015 and thus slightly grew compared to 2014 (€ 148.7 billion).

Solid biomass least expensive renewable energy technology for electricity production in the EU

Based on aggregated results for the EU the levelised cost of energy (LCoE) for solid biomass seem the least expensive, and even in the same range as the reference electricity price. Commercial large scale PV and wind energy show a wide LCoE range, which is due to Member countries’ preconditions for PV and wind energy generation.

Renewables replace substantial amounts of imported energy and avoid costly imports

The increased use of renewable sources of energy in power, heat and transport fuel sector led to the reduction of €87 billion in the EU-28 member states. In addition 302 Mtoe of fossil fuels (gasoline, oil, coal, gas) were substituted by renewable sources of energy in 2015.

R&D expenditures in renewable energy technologies reveal strong position of EU

In 2014 total public R&D investment in renewable energies technologies amounted to 781.6 M€ in the EU28. The GDP shares hereby display a very strong position of Sweden, France and Belgium. In a global context the EU 28 was followed by the US with 671.5 M€ of R&D expenditures taking the lead in 2015 with 755.4 M€.

Key data for European Union (EU) in 2015

  • 28.8 % Renewable electricity share in total EU generation in 2015 (27.5% in 2014)
  • 18.6% Renewable heat share in total EU generation (18.1% in 2014)
  • 94.2 Mtoe Renewable heat (and cooling) consumption in 2015 (89.2 Mtoe in 2014)
  • 935.8 TWh Electricity production from renewables in the EU in 2015 (899 TWh in 2014)
  • 1.14 million jobs in the European renewable energy sector
  • €153 bn turnover generated by renewable energy sources in EU-28 in 2015
  • €87 bn avoided expenses in EU-28 through renewables in 2015 (€104 bn in 2014)
  • 302 Mtoe EU-28 substituted fossil fuels in 2015 (292 Mtoe in 2014)

Source: EurObserv’ER

The COP22 climate change conference that took place last year in Marrakech was the chosen scenario to announce the international winners of the fourth edition of the Green Building & City Solutions Awards 2016, in which seven buildings and three eco-districts were recognised for their innovative solutions. Spain was well represented with the Smart City Pamplona project receiving second prize in the Smart City category and the Edificio Zaramaga project in Vitoria winning the Sustainable Renovation Grand Prize category. The energy refurbishment of the Edificio Zaramaga building, a project from the studios Luz Espacio Arquitectos and IMV Arquitectos, is designed to reduce the energy consumption of this social housing block and guarantee the comfort of its inhabitants.

Situated at Cuadrilla de Laguardia nos. 2, 4 and 6 in the town of Vitoria-Gasteiz, the aim of the energy refurbishment project for this social housing block was to completely renovate its three buildings to achieve efficiency and provide them with the accessibility they lacked from street level to the upper floors. Action would only be taken on common elements and from the outside of the dwellings. For this, a thermal cladding was
installed on the entire building envelope, including the façades, roof and ground slab, to reduce energy consumption and CO2 emissions, in addition to eliminating thermal bridges. These actions, accompanied by the correct level of ventilation, would avoid condensation.

 

Following renovation, the social housing block is furnished with the necessary insulation and inertia features, air permeability control, regulated exposure to solar radiation and heat recovery ventilation for each dwelling. It thereby achieves thermal comfort taking into account the climate, the expected usage and seasonal variations combined with reduced energy expenditure. In short, the building enjoys a high level of energy efficiency that has resulted in the achievement of an A energy rating. Read more…

Construction21 ESPAÑA

Article published in: FuturENERGY March 2017

According to the European Energy Efficiency Directive, 1.7 million Spanish homes with central heating systems should have installed water and heating meters or individual meters before 1 January 2017. A study carried out by the Universidad de Alcalá de Henares for AERCCA concludes that the installation of heat cost allocators and thermostatic valves could save the equivalent of eight months of electricity consumption in a typical home, in addition to reducing CO2 by an average of 61 tonnes per year.

The installation of heat cost allocators and thermostatic valves can save an average 24.7% on heating consumption in homes in multi-apartment buildings with central heating, according to the “Study on savings arising from individual heating metering in Spain”, undertaken by the Universidad de Alcalá for AERCCA, the Spanish Association of Heat Cost Allocators.

 

The average energy savings of the 1,349 homes analysed in Spain with collective or centralised heating installations, measured in absolute terms, amount to 7 GWh, the equivalent to 8 months electricity consumption by a typical home. Read more…

Article published in: FuturENERGY January-February 2017

The expert vision of a company focused on reducing energy consumption

The hotel sector is currently enjoying a significant upsurge thanks to the strong recovery being experienced by tourism. There are many newly constructed hotels, but also a large number of renovations. The sector is increasingly more demanding and hotels have to modernise. They also have to be more competitive and this undoubtedly translates into a control of operational costs where the reduction in energy expenditure plays a vital role. Jung is particularly focused on energy efficiency solutions, offering a wide range of options and with emblematic projects already undertaken that improve energy efficiency in this sector.

Jung has spent many years offering energy saving solutions to the market, in particular the tertiary sector. There is nothing new about energy efficiency. Jung’s solutions aim to reduce consumption in lighting and temperature control – the two concepts that consume the most energy in any building, including hotels.

 

First, there is energy saving in the bedrooms. Jung offers the possibility of adapting bedroom temperatures to the circumstances of any given moment. Remember that for every degree by which the temperature increases from heating or reduces from air conditioning, 7% more energy is being consumed. Another issue is lighting control. Jung’s systems prevent the lights from staying on when the client walks out of the bedroom. They also provide the user with an optimised use of the lighting by configuring settings or centralised switches via sensors located next to the bed.
Read more…

Antonio Moreno
Technical Director, Jung Electro Ibérica

Article published in: FuturENERGY January-February 2017

Thanks to a cloud-based efficient energy management platform that uses big data to optimise consumption, Siemens has enabled Gestamp, a multinational company in metal autoparts manufacturing, to reduce energy consumption by up to 15 percent at 14 of its plants. The Spanish company specialises in designing, developing and manufacturing metal autoparts to make lighter and safer cars, and has chosen Siemens as global supplier to implement this system and thus manage to optimise its energy needs in an industry that is increasing its energy consumption. The initial phase was the implementation of Siemens’ efficient energy management platform at Gestamp’s production plants in Spain, Germany, the UK, France and Poland. There are plans to extend the project to 30 plants, including China and USA, before the end of 2017.

Siemens’ platform makes it possible to monitor real-time energy consumption needs at various factories and to connect their infrastructure to a cloud solution that can instantaneously assess electricity and gas consumption.  This tool allows to define algorithms based on the consumption patterns to identify and warn about the energy malfunctions of the equipment. The energy consumption data can be processed through data analytic techniques to define predictive maintenance, to manage production processes or to forecast energy consumption based on future production requirements.

gestamp-siemens-1

The final aim is to model the behaviour of the equipment so that it works as efficiently as possible and in a coordinated way, while also facilitating the reduction of CO2 emissions by 15% given the decreased energy consumption.

Siemens’ energy efficiency platform, managed from the company’s Smart Grids Control Centre in the Spanish city of Seville, has already been implemented in the Gestamp plants that consume the most energy. The aim is to extend use of the platform to other parts of the world where this automotive manufacturer has a significant presence, where results similar to those achieved in Europe are anticipated.

Accelerated amortisation

The plant consumption rationalization resulting from the data analysis and the solutions offered by this platform has enabled Gestamp to save almost 45 Gwh within the past 12 months. This sizeable figure results in a payback period for the investments less than three years.. It is a differential system due to its high resolution in collecting and processing information, in addition to its ability to cross energy consumption data with other variables, such as production. The aim is to extrapolate this information to understand the operation of the equipment, something that is helpful in decision-making. Alongside data collection and processing, the system makes it possible to define behaviour patterns using algorithms, in order to detect energy inefficiencies, to automate them and correct them.

Siemens and Gestamp are moving forward together to Smart Facilities and they are making real Industry 4.0 in the plants. Energy Efficiency project is one of the pillars of the partnership between Siemens and Gestamp within the framework of this initiative.

Electric introduced Continuous Efficiency, a suite of managed services and software that combines the knowledge of Schneider Electric experts across the globe with sophisticated tools and technology. The mix of onsite and remote support, as well as software, allows companies to uncover savings opportunities, implement changes at both the site and enterprise level, and constantly refine performance.

Continuous Efficiency blends utility, facility and operations management to reduce energy use and spend — 15 to 30 percent on average. It also goes beyond basic energy efficiency to help commercial and industrial firms develop proactive management and maintenance programs to help extend equipment life, reduce downtime and fine-tune systems for ongoing performance.

 

Key components of Continuous Efficiency include:

  • Data Acquisition & Quality – Best-in-class integration services collect and organize facility, energy and interval data along with utility invoices to provide a single, structured view of the most critical information to enable effective decision making.
  • Remote Analytics & Optimization – Energy specialists paired with advanced technology monitor facilities, identify energy conservation opportunities and the root cause of comfort and maintenance concerns, as well as ensure continual performance and verified savings.
  • Software Visualization – A single, cloud-based view of energy procurement, consumption and sustainability data allows energy managers to identify non-optimized facilities, equipment and behaviors, and prioritize energy efficiency projects based on the anticipated return on investment.
  • Onsite Consulting – A variety of collaborative, onsite engagements with Schneider Electric experts help identify energy improvement opportunities, train operations and facility managers, build internal support with executives, and design best practices to support certifications such as ISO 50001.

Continuous Efficiency is scalable to meet the needs of organizations as their energy and sustainability strategies, and facilities footprint grow and evolve. Managers can choose the support and technology most relevant to their current business and easily pilot new programs.

Source: Schneider Electric

A steady decline in energy consumption in the period from 2000 to 2014 has lowered EU final energy consumption from 1133 Mtoe in 2000 to 1061 Mtoe in 2014, according to a JRC report. This puts the consumption below the indicative targets for 2020, set to 1086 Mtoe by the European Energy Efficiency Directive. The saving achieved is equivalent to the whole energy consumption of Finland in 2014.

The report presents the status of energy consumption trends in the four main energy consuming sectors in the EU: residential, tertiary (services), transport and industry over the period 2000-2014. The breakdown into sectors shows that the largest decline of final energy consumption has been registered in the industry (-17.62%), followed by a remarkable decrease (-9.52%) in the residential sector, while the transport sector has seen a slight increase (+2.21%) surpassed by services which have marked an energy consumption hike of 16.48%. The increasing trend in the tertiary sector is expected to continue as Europe moves to a more service-based industry.

According to the report, transport accounted for 33.22% of total final energy consumption in 2014, confirming transportation as the main energy consumer. Its final energy consumption in the EU-28 has grown from 344.9 Mtoe to 352.5 Mtoe. A decreasing trend, registered from 2007 to 2013, has been reversed in 2014 with a 1.4% growth due to recovering economies.

eurostat-graph-energy-consumption2000-2014-eu28

Transport

Road transport, especially passenger cars, represents the main consuming transport subsector. Its energy consumption has increased by 2%; other two subsectors which have registered a rise in their consumption in comparison to 2000 are pipeline transport (+ 192.4%) and international aviation (+ 14.8%). The results show that biofuels (especially biodiesels) have developed at a rapid pace from 2000 to 2014, and their contribution in the energy mix has increased by 3.8% (13.4 Mtoe), reaching a 4.01% share in 2014.

Buildings

For buildings, the energy demand depends not only on weather and climate conditions but also on other factors such as building characteristics (i.e. building envelope, insulation level, location, heating/cooling systems etc.) as well as economic, social and cultural reasons (disposable income, lifestyle, habits, etc.). JRC’s market analysis shows that the purchase and use of more efficient energy-related products are to a certain extent defining the energy consumption in buildings, hence the 9.5% decline between 2000 and 2014.

Industry

Final energy consumption in European industries has been falling since 2008. Reduced production of iron and steel – the highest energy consumption manufacturing subsector – has led to a 24% drop of the final energy consumption during the period 2000-2014. The financial and economic crisis has further affected the production.

Since 2013, the Hospital de Manises, together with its associated healthcare centres and special units, have managed to bring down their energy consumption by 16% as well as achieving a 50% reduction in CO2 emissions. These figures go beyond the initial objectives forecast for 2015, given that the target was to reduce the 2015 carbon footprint by 20% by means of measures including: saving energy on the consumption of gas and electricity, the green purchase of renewable energy sources of 100% of the electricity consumed in the area, a reduction in the number of business trips and the acquisition of hybrid vehicles for home care.

The centre has obtained this good result thanks to the launch of an ambitious sustainable management programme that has been implemented alongside other actions including replacing the lighting system in the hospital and primary care centres with LED technology that consume less than conventional systems.

A high level of performance has also been achieved from the centre’s solar thermal plant to reduce the consumption of natural gas in domestic hot water generation. The optimisation of the solar PV panels has been another savings factor as they are able to supply the consumption equivalent to all the lighting for the hospital’s main foyer over the course of 14 hours a day. Read more…

Article published in: FuturENERGY July-August 2016

HVAC units are big consumers of energy in the majority of installations in a range of sectors. They can account for 60% of the electricity bill in tertiary sector buildings such as hotels, hospitals, shopping centres, industrial and office blocks. The way forward to finding solutions that achieve energy savings in this field is based on access to information. As a result, Indoorclima is developing the Climate management Big Data, offering vital information on the operation of chiller and rooftop units from manufacturers worldwide. Having knowledge of their actual operation in a wealth of situations (both those inherent to the units and those relating to the installation or location) is providing the keys to developing the necessary algorithms to be able to parameterise each installation in terms of optimal performance and thereby reduce energy consumption from 20% to 50% depending on the installation.

HVAC installations have a low level of energy management. One major issue is the lack of the control over large output units that are usually located in regions with difficult access, and the preventative maintenance itself that is very basic, generally reduced to the minimum regulatory requirement. As a reference, of the total sales of HVAC units in 2012, only 15% corresponded to regulation and control systems. And this, in sectors where HVAC units consume more than 3,000,000 kWh/year, representing disproportionate and unnecessary energy costs.

And this has provided the basis for the work of Indoorclima in its search for a solution whose main aim is to save energy in HVAC installations. Read more…

Silvia Escámez
María del Mar Romero
Óscar Marinello
Indoorclima

Article published in: FuturENERGY July-August 2016

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