Tags Posts tagged with "saving"


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MAN Energy Solutions has won the contract to provide a new combined-heat-and-power (CHP) solution for Ben Gurion Airport in Tel Aviv, Israel. As the future main energy source, a dual-fuel engine MAN 9L51/60DF will supply the airport with 9.2 MW of electrical energy. The engine will primarily run off a domestic natural-gas supply with plant hand-over – upon its construction by Israeli company, Telemenia – planned for the end of 2019.

The power-plant engine will not only generate electricity, but will also contribute to the airport’s air-conditioning system through combined-heat-and-power generation. Instead of a conventional, compression chiller powered by electricity, the air-conditioning system will exploit heat generated by the engine to provide cooling.

The cogeneration solution not only increases the plant’s efficiency to over 70%, but the airport will also save on the electricity that would otherwise have been required to operate the chiller.

An indispensible solution

With more than 16.5 million passengers a year, Ben Gurion Airport is the largest and most important airport in Israel, making a reliable energy supply indispensable. The operation of the new facility will mean that the airport will no longer draw its energy from the national grid but, rather, will operate independently of the public power supply.

In order to meet high safety standards, the airport’s energy supply must be assured in the event of any crisis. Accordingly, the reliability of the technology used is of great importance. Thanks to its dual-fuel capability, the MAN 9L51/60DF engine will remain fully operational, even during any disruption to its gas supply.

The integration of increasing shares of renewable energy into electricity grids is getting easier and cheaper. Smart grids, demand response, flexible wind turbines and storage are helping to do this. But we need to upgrade and expand the grid to secure the significant cost savings that an interconnected power market could offer.

If renewables are to meet 35% of Europe’s energy needs by 2030, then investments in electricity grids need to be more strategic. That’s what the Renewables Grid Initiative and WindEurope will tell participants at today’s Grids meet Renewables conference in Brussels.

To deliver an adequate grid in Europe and further reduce system costs, the extension of electricity infrastructure needs to be done in a smarter way. Three things are needed in order to do this.

First, renewable energy producers – including wind – and grid operators need to work together more closely. Defining the future energy landscape requires joint planning on the development of new transmission lines. This should take into consideration the expansion of renewables and the electrification of other sectors, as well as environmental and social impacts. Countries can help facilitate this by detailing the volumes of renewable energy they will deploy post-2020 as part of their National Energy & Climate Plans. This will give much-needed clarity to grid operators on where to invest in additional infrastructure. And will therefore help to avoid grid bottlenecks that we’ve seen on domestic and European level.

Second, to accommodate for increasing electrification in other sectors the EU needs to prioritise electricity grids over gas grids when it’s allocating funds under the Connecting Europe Facility. The electrification of heating, transport and industrial processes is essential for the transition to a low-carbon economy. This needs to come with an extension and upgrade of electricity grids across Europe. Good examples are projects like Biscay Gulf (Spain) and SuedOstLink (Germany) for which EU support was recently announced.

Third, the software of power markets also needs to be fixed. ‘Grid support services’ – whereby renewable generators can ramp up and down supply according to demand – should be increasingly commoditised. New wind power plants are technically able to provide these services and many countries already impose these responsibilities on wind farms. But many markets still do not allow wind power plants to provide and be compensated for these services.

WindEurope CEO Giles Dickson said: “The energy sector is transforming rapidly. This transformation needs a common vision, shared by both the renewables and grid industries. The investments in new electricity grids are essential to ensure Europe can fully exploit its wind resource. A smarter approach to how we develop the grids will allow wind energy to provide an ever greater part of consumers’ energy needs. This will be key in meeting an ambitious renewables target for 2030.

Renewables Grid Initiative CEO Antonella Battaglini said: “In the next decade, massive growth of renewables as well as related grid development need to be supported. This can only be realised if we at the same time protect nature and involve society in the process. This requires multidisciplinary skills and collaborative processes to properly address peoples’ concerns and desires for a more sustainable and at the same time affordable energy future. Each day we learn how to better integrate renewables and how to deliver better projects on the ground. To continue on this joint path, this learning exercise also needs to continue and be enhanced.

Source: WindEurope

Solar powered systems save energy, reduce the CO2 emissions of the building and lead to an economic saving that facilitates their amortisation, especially in hotel installations characterised by high and more or less constant levels of DHW consumption all year round. However to achieve this, these systems have to be well-designed, simple structures using reliable and efficient technologies and equipment that minimise necessary maintenance actions.

For example, for a 4-star hotel with an occupancy of around 100 people a day, a solar installation could be designed to cover 60% of the needs arising from DHW demand by installing a solar powered system with a working surface area of about 60 m2 and 4,000 litres of accumulation. The energy obtained through this clean and renewable system would represent a saving in fuel that, in the case of natural gas, would amount to almost 2,700 € per year and would avoid the emission of 17,254 kg of CO2 per year into the atmosphere. To achieve these savings values, the equipment and the type of system to be implemented have to be very carefully selected to protect the solar installation from its main risks: over-heating and freezing.

ACV has over 15 years experience in the manufacture of solar powered systems and is leader in the design, development and commercialisation of Drain Back technologies for tertiary-type installations. ACV’s Drain Back system empties heat-bearing fluid from the collector tank in the event there is a risk of over-heating or freezing, stopping the pump. Using gravity, the fluid is emptied into the drainage tank and air rises through the collector field. The unit is automatically refilled when the situation returns to normal (activating the pump, letting air fill the drainage tank so that the liquid goes back into the solar collectors). Read more…

Gaspar Martín
ACV, Technical Director

Article published in: FuturENERGY June 2015

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On 26th June the Platform for Distributed Generation & Energy Self-Consumption held a press conference in Madrid, in which it explained its point of view on self-consumption with net balance regulation, and the need for regulation that really benefits not only consumers, enabling them to save on their energy bill, but also industries, enabling them to improve competitivity.

According to the Platform, the development of a distributed generating market, focusing on saving and efficiency, would create employment, promote technological development, help to reach environmental goals, avoid the need for energy imports and allow a good section of the renewables sector to survive, particularly that part of it involved with PV and mini-wind energies.

SAJ Electric