Business


Jun

05

2019
Letter Ingenieros will lead the territorial delegation of Eastern Andalusia and the Balearic Islands of A3e

Letter Ingenieros will lead the territorial delegation of Eastern Andalusia and the Balearic Islands of A3e

On 9 April, the Board of Directors of the Association of Energy Efficiency Companies, A3e, in ordinary session appointed the 12 new territorial delegates.

The role of Letter Ingenieros, represented in this case by our Commercial Director, María Ávila, will be mainly to be the voice of the Association in Almería, Granada, Jaén and Málaga, as well as in the Balearic Islands, from our two offices in both locations.

This year’s proposal comes strong, trying to organize various events / conferences associated with other entities related to the sector, presenting the proposal also to different organizations such as University, Cluster, Associations, etc.. The aim is to present our success stories, share the latest developments in the sector, attract associates and resolve any doubts that may arise in terms of energy efficiency, renewable energies and new ways of achieving the energy transition that is being pursued.


Mar

19

2019
The Efficiency Classroom LETTER – UGR moves with you

The Efficiency Classroom LETTER – UGR moves with you

The collaboration space created between the University of Granada and the company Letter Ingenieros S.L opens a new website to inform about the activities and programs it organizes.

This new portal, which can be accessed through http://aulaletter.ugr.es/, has relevant information for the university community.

Within this community, it is especially designed for undergraduate and master students in Chemical Engineering.

Classroom Programs

Among the programmes that have been launched, the most efficient TFG Award stands out, which rewards projects that take into account the energy efficiency of the main processes.

In this way, it is favoured that the projects that leave this department have a differentiating component that favours the students.

The 2019 edition of the prize has a last generation iPad valued at more than 500€ among other gifts.

Another of the successful programs launched by the Aula are the internships in the company, being this program a help for labor insertion.

Classroom Activities

In addition to these programs, it also organizes activities that encourage students to connect with the company.

Proof of this connection are the Sports Days that are organised this year between teachers, students and company employees.

For this occasion, a bus will be floated on 10/5/2019 to allow students to attend and all participants will be treated to an aperitif at the Vegas de Genil sports facility.

During the day the participants will be able to play 7-a-side football and paddle tennis among other activities.

Classroom R&D

Finally, it should be noted that the website informs of the R&D projects being carried out, highlighting the entitled H2-SMART which can be further information here: https://letteringenieros.com/es/category/hidrogeno/

On the basis of the H2-SMART project, informative talks will be given at the Greencities Málaga congress  and in La Madraza Granada.


Aug

24

2018
Smart Territories – Efficient Solutions by Letter Engineers

Smart Territories – Efficient Solutions by Letter Engineers

“NATIONAL PLAN OF INTELLIGENT TERRITORIES. A strategy for a “smart Spain” that seeks to maximize the opportunities offered by the proper use of digital platforms to provide better public services in the city and in rural areas, and where Letter Engineers has much to offer”

Energy Efficiency: the starting point of an Intelligent Territory

Since 2007, European 20/20/20 targets were established:

  • 20% reduction of greenhouse gas emissions (in relation to 1990 levels)
  • 20% renewable energy in the EU
  • 20% improvement in energy efficiency

In Spain, there have been multiple strategies and announcements, focused on the Energy Efficiency of our towns and cities, since consuming more efficiently helps us to achieve the targets and we also contribute to reduce our Carbon Footprint.

“We have a common challenge: to plan, manage and govern our cities in a sustainable way, maximizing economic opportunities and minimizing environmental damage”

All this has given way to the use of digital platforms able to manage efficiently:

  • ENERGY CONSUMPTION OF PUBLIC LIGHTING
  • EFFICIENT WATER CONSUMPTION IN THE IRRIGATION SYSTEM OF PARKS AND GARDENS.
  • EFFICIENT ROUTES IN WASTE MANAGEMENT
  • INTELLIGENT ROUTES IN PUBLIC TRANSPORT

hence, the goal of transforming traditional cities into “SMART CITY”.

To make all of us much clearer, a Smart city is a sustainable and innovative city, since it uses Information and Communication Technologies (ICT) and other means to improve decision-making, the efficiency of operations, the provision of urban services and their competitiveness.


Although it is many steps to go in parallel in Spain it has unveiled NATIONAL PLAN OF TERRITORIES INTELLIGENT, which is part of the digital strategy for Intelligent Spain and it is aligned with the described context and target of the Smart City.

What is a Smart Territory?

The term intelligent territory comes after the peculiarity of our cities and our environment, since the city must be treated as an entity whose boundaries go beyond proper limits. All this is because our cities are included in a much larger area connected to other nearby municipalities.

Another new feature included in this National Plan is the integration of strategy in our rural areas, with the approach of developing a policy named SMART VILLAGES. And it is that 82.8% of the Spanish municipalities are rural and they occupy 72.8% of the total area of the country.

What role does Letter Engineers in the development of Intelligent Territories?

Since the beginning in 2013, LETTER INGENIEROS has opted for technological innovation as an intelligent solution in the energy management of a city or town.

Our team is not only made up of engineers and environmentalists who are experts in energy efficiency, but also supported by the management platforms developed by our Innovation and Development department, composed of computer engineers and experts in the development of applications.

This is the case, for example, of the EFILUX intelligent management platform, which allows the visualization and search of lighting inventory as well as energy management and maintenance.

This platform has been developed with the latest technology to work quickly and efficiently, with a simple, intuitive and clean interface. It also allows to visulise absolutely all the characteristics of any point of light, control center or part of the installation as well as to manage the electronic invoices and to locate disagreements.

Being a management platform of own development allows us to adapt it to the needs of each customer, being functional for another type of management, such as: EFFICIENT MANAGEMENT OF IRRIGATION OF PARKS AND GARDENS, among other functions.

The proposed Telemanagement and Energy Efficiency system will allow a complete management of the maintenance from the control center as well as from the work posts of the maintenance staff, both in their facilities and on the street.

Letter Ingenieros is committed to the smart development of our cities and rural environments as the only solution to sustainable development.


Aug

17

2018
Vehículos Eléctricos en punto de Recarga

Experts in Exterior Electricity Projects – Recharge Points

One of the great challenges of this society is to achieve the change of the current energy model for another more sustainable, more efficient, more environmentally friendly and, of course, to ensure an improved social and economic world

That is why, and the unsustainability of the current energy model based on the consumption of fossil fuels that has so many harmful effects for all of us (when I say of harmful,  I not only am referring to climate change), that the Electric Vehicle is being introduced in society as a GREAT alternative to our system of public and private mobility.

While it is true, we still have many who have doubts and especially when we think: where do I plug it if I go on a trip? … since, in many territories, there is not yet a recharge network that gives us peace of mind when we move our electric vehicle. To do this, there are a number of existing aid to carry out investments in charging equipment for electric vehicles.

Aids to encourage the use of the Electric Vehicle

In Andalusia, within the Intelligent Networks area of the Program for the Sustainable Energy Development of Andalusia we find very interesting incentive lines that have the following aims:

PROMOTE THE TRANSFORMATION OF OUR COUNTRY TOWARDS A SMART CITY MODEL, THROUGH A SUSTAINABLE ENERGY DEVELOPMENT THAT IS RESPECTFUL TO THE ENVIRONMENT

With this aid: what is encouraged?

The purpose of this line of aid is the development of infrastructures that facilitate the use of electricity, or the use of gas or hydrogen in the transport of people or goods, with actions such as:

CHARGING FACILITIES FOR SINGLE USE

RECHARGE FACILITIES PUBLICLY AVAILABLE

O RECHARGE ADVANCED FACILITIES

and for municipalities with fewer than 20.000 habitants, the percentage of aid can reach up to 70% of the fundable costs.

How can Letter Engineers help you?

Letter Engineers experts in efficient energy management systems, has a technical office formed by experts from various branches of engineering and environment, who are responsible for advising our clients and potential clients on fundable projects, such as those related to the Electric Vehicle

In addition, in our engineering department LETTER ING we have experts electrical engineers in ELECTRICITY OUTSIDE and relaxed experience in technical assistance for project development, preliminary and tender documents, design and project development, licensing, environmental impact studies and management of projects of this type.

Do not hesitate and contact our experts, a sustainable future is possible if we all take part.


Aug

10

2018
Estación de recarga TESLA de vehículos eléctricos.

The electric vehicle, how does it work?

Because of the major environmental problems, congestion in cities, their high levels of pollution, and the new energy framework of Spain, the electric vehicle is taking a special role in our daily conversations.

How does an electric car work?

From Letter Engineers, we will try to explain in a clear and simple way how an electric car works. For this, we will focus on its two fundamental parts: the electric motor and the battery.

Basic concepts

The first thing we have to understand is the concept of current as well as the two types of current that we have, continuous (DC) and alternate (AC). The current is basically the flow of electrons through a conductive medium such as a cable. Depending on the amount of flow we have more or less amperes (A), which is how the intensity or electric current is measured. For the electrons to move, a potential differential (Volts) is necessary, just as a river needs a height difference for the water to run.

If the flow of electrons is more or less constant and in one direction, from one pole to another, we are talking about direct current. On the other hand, if the flow changes every certain time (cycle), we will have alternating current. In Spain these cycles are 50 Hz, meaning the direction changes 50 times per second.

Normally we will use direct current for small electronic devices to about 24V. We use the alternating current for more voltage, for example at home we get 230V in single phase (one phase) and 400V if we had a supply in three phase (three phases). We use alternating current because unlike the continuous one it can be increased or decreased its voltage easily in transformers. If we want to move electrical energy at a great distance we will increase its voltage at the cost of decreasing its intensity so that we will have less losses (Ohm’s Law). The great advantage of direct current is that we can store it, chemically, for example in a battery, then we will see how. This is how our mobile works.

The device that converts alternating current into continuous is called a power supply, while the device that converts the continuous current into alternating current is called an inverter.

The product of the current (A) by the voltage (V) gives us the power that is measured in Watts (W); Well, this is not entirely true, but we can do for now. Do not confuse the power in W with the energy that is measured in Wh. Energy is the product of power by time.

We have summarized the most to make it clear and simple, however, if you have questions on these concepts you can contact us so that we expand these fundamentals.

Traction Battery

It is one of the most important parts of an electric car. Not to be confused with the service battery that is 12 or 24V we currently have and that feeds the lights, radio, etc.

The traction battery is a set of cells that store continuous electrical energy in a chemical way. Electric power is obtained from an external plug (at home or on public roads where we already know that it is alternating energy), but the battery has to arrive in continuous mode so we use a power source (known as a charger).

The BMS monitors the loading and unloading status of each cell, let’s say it is the one that controls the battery. It is very useful to manage, for example, fast loading. Here what we do is take each cell up to 80-90% of its capacity leaving the rest free. In a battery which is the longest completely filled cell and fast charging it makes use of this topic.

Electric motor vs combustion

Due to Nikola Tesla in 1893, today we have AC motors, a simple way to convert electrical energy into mechanical. Due to mechanical energy we can move the wheels of a car passing previously by the transmission shaft.

An electric motor is nothing more than an enclosure where you have a stator (fixed part) and a rotor (moving part). Depending on the engine type we have some magnets which have a power to create a electromagnetic fields that move the rotor. The good thing about this is that investing in the engine cycle can act as a generator and spend mechanical energy into electricity. This is used to store energy in the battery taking advantage of braking and lowering.

Most electric cars are powered by a three-phase AC motor. From the battery, where we know that we have continuous power, we need an inverter to pass it to AC. Depending on the energy that passes through the engine we have more or less revolutions (RPM) and therefore power. Out of curiosity comment that we can reach 15,000 or 20,000 RPM. The maximum power in an electric is obtained from the initial moment since we have the maximum torque.

A combustion engine (those of a lifetime) instead of electricity works by combustion of a fuel (gasoline, diesel, gas …) in an explosion-compression engine in pistons. The main problem is that as a byproduct of the reaction, gases are generated that, depending on the fuel, are more or less polluting.

An electric motor is much smaller than a combustion engine and with many fewer parts. We also have much less friction parts and therefore less maintenance. The power curve in an electric motor is linear and we have all the power available at the start, however, in combustion we have little power at low revolutions. This causes that in an electric we do not need a gearbox.

Electric car charging point


Jul

13

2018
Nuevo código de la Edificación, 2018

El nuevo CTE 2018, hacia el consumo “poco” nulo

Como sabéis hace unos días el Ministerio sacó a audiencia pública el nuevo texto del Código Técnico de la Edificación más conocido como CTE. Ya se han manifestado diferentes voces y ahora es el turno que demos nuestra opinión desde Letter Ingenieros.

CTE 2018

Hace un año hacíamos nuestro propio análisis, puedes verlo aquí (http://letteringenieros.es/los-5-anos-revisar-cte-se-acaban/). Básicamente se mantiene gran parte del análisis en este borrador. Lo primero que llama la atención es el nombre que le han dado a la HE1, cambian la palabra “limitación” por “control”. Esto ya adelanta que ahora lo que se limita es el consumo, un error desde mi punto de vista y que dista mucho de lo que quiere Europa: primero limitamos demanda al máximo (15 kWh/m2 como dice Passivhaus sea demasiado… vale), y después esa poca energía la combatimos con renovables. Para nada este CTE va en esa línea, lo dicho un gran error y una gran oportunidad perdida.

Se introducen en la HE1 dos conceptos nuevos. El control solar es un avance, pero poner ahora un coeficiente global de pérdidas Kg me recuerda a la normativa del año 1979. Me parece que no se puede asegurar la limitación de la demanda porque no considera ni la orientación ni el % de huecos ni la estanquidad del edificio … esto más que un avance me parece ir para atrás.

Analicemos otros aspectos importantes. En cuanto a quien aplica, se ha mejorado el tema de rehabilitaciones para que no se sigan haciendo tantas trampas, pero el cambio de uso debería asimilarse a edificación nueva. El tema de renovables ahora se abre a otras tecnologías en la HE4 y HE5 sin citar que tiene que ser con energía solar.

Hay un tema que no termino de entender: En las condiciones de uso de un edificio  sabemos que necesitamos menos calefacción cuando tenemos mayor carga interna.  Sin embargo el nuevo CTE nos permite consumir más a medida que estas cargas pasan de bajas/medias/altas. La verdad que esto de las cargas puede dar lugar a mucho trampeo y deberían dejarlo mejor definido. Lo mismo ocurre con los valore límite de U, me da la sensación que en algunas zonas climáticas son menos restrictivos que en la anterior versión de 2013.

Un tema clave en el estándar alemán Passivhaus es la hermeticidad del edificio. Hemos dicho muchas veces que es necesario en el CTE se exija el ensayo de forma obligatoria y que este valor no se deje en el aire. Al menos que se le de más importancia. Desde la Plataforma Española de Passivhaus valoran la modificación como un importante avance, pero echan en falta una limitación temporal en el cumplimiento de los objetivos y unas pautas a seguir.

No quiero concluir tan negativo ya que hay aspectos positivos que ya iremos desgranando, pero hoy me he querido centrar en cosas que no comparto y que esperemos que con las alegaciones se mejoren.

Y vosotros,  ¿que opináis? En Letter Ingenieros queremos conocer tú opinión. 


May

04

2018
Gestión Inteligente del Alumbrado Público – GreenCities

Gestión Inteligente del Alumbrado Público – GreenCities

Letter Ingenieros presentes en Greencities Málaga, un encuentro para todos los agentes implicados en la construcción de ciudades inteligentes. 

Greencities

Un año más, Letter Ingenieros ha estado presente en el foro Greencities, donde instituciones públicas y organizaciones privadas  hablan sobre las ciudades del futuro.

Stand Letter Ingenieros

Sostenibilidad, Accesibilidad, Movilidad, Conectividad, son los retos que se pretenden alcanzar cuando hablamos de ciudades inteligentes, puesto que la sociedad y nuestro planeta necesitan entornos que ofrezcan a la ciudadanía, un ambiente integrado, menos contaminado, cercano a la sociedad, eficiente, capaz de consumir menos recursos y generar menos residuos.

Pero ¿Qué es una Ciudad inteligente o Smart City?

Una ciudad inteligente se define como aquella que apuesta por mejorar la vida de sus habitantes y, a la vez, apuesta por la sostenibilidad, utilizando herramientas que permitan responder a los problemas y prestar mejores servicios públicos.

Por otro lado, el Libro Blanco Smart Cities indica que “el propósito final de una Smart City es alcanzar una gestión eficiente en todas las áreas de la ciudad (urbanismo, infraestructuras, transporte, servicios, educación, sanidad, seguridad pública, energía, etcétera), satisfaciendo a la vez las necesidades de la urbe y de sus ciudadanos”. 

Letter Ingenieros, clave de innovación en la gestión Eficiente del Alumbrado Público

Desde el Inicio, Letter Ingenieros se posiciona como una ingeniera experta en la gestión eficiente del alumbrado Público de una ciudad, no solo aportamos soluciones eficientes y de alta calidad para el alumbrado público de una ciudad, sino que aportamos soluciones de Gestión innovadora e integrada.

Gracias a nuestro departamento de innovación Tecnológica, nuestro  equipo de ingenieros informáticos,  han desarrollado una  plataforma de gestión inteligente que integra la gestión eficiente del Alumbrado público con otros servicios de la ciudad, como puede ser el Riego, la movilidad en bicicletas públicas o el estado de un punto de recarga. 

Una plataforma hecha a medida para las necesidades de cualquier ciudad. 

Para más información escríbenos a info@letteringenieros.es


Apr

24

2018
No son los individuos los que hacen las empresas exitosas, sino los equipos

Letter Engineers: an anniversary with a lot of Energy

A fun sports day and a great meal commemorating define events during this weekend for the fifth anniversary of Letter Engineers.

Team Letter Engineers: I Sports meeting

Fellowship, fun, team or union are adjectives that are part of what we experienced during this weekend at the celebration events of the 5 years of life of Letter, a small company born out from the energy of Juan Carlos García, María Ávila y Alberto Ochando, founders and promoters of the society.

 

On Friday, the team Letter lived a fun and energetic sports day, whose goal was simply to leave the stress of the office and promoting social relations between the management team and technical: friendship, teamwork, the competitiveness, the participation of all, etc. Objectives that were more than achieved when the football match played by all the components of Letter Engineers began.

5th Anniversary Party Letter Engineers

 

On the other hand, on Saturday there was a great anniversary party and dinner, in which the whole team and our companions offered the trajectory of the organization and we blow out the candles with a great desire: For another five years more than Letter Engineers !!!

Now, a new stage begins, with an ambitious future projection: “Work to consolidate the growth experienced and implement new lines of business around training and software development”

 


Apr

09

2018
Certificados CMVP, CEM y Passivhaus. Mi experiencia

Certificados CMVP, CEM y Passivhaus. Mi experiencia

En este post, desde el punto de vista de opinión, vamos a repasar tres de los más importantes certificados internacionales que ha día de hoy tenemos a nuestra disposición los que queremos especializarnos en eficiencia energética

CMVP es el certificado del mundo EVO, que es la organización que desarrolla un procedimiento para la medida y verificación de ahorros energéticos.

CEM son las iniciales inglesas de Certificado Gestor Energético. Tanto CMVP como CEM pertenecen a la AAE (Asociación de Ingenieros Energéticos) que tiene sede en EEUU.

En mi caso obtuve el CMVP en 2011, mientras que, actualmente, me encuentro en proceso para obtener el CEM, puesto que me examino el próximo 2 de junio en Barcelona. Por tanto hay cosas que hasta que no las termine no las puedo valorar, pero por ahora ya tengo una idea clara de por dónde se mueve…

Por último, el certificado Designer Passivhaus (titulo que obtuve en 2017) tiene un enfoque totalmente orientado al diseño y evaluación de edificios de consumo casi nulo. Passivhaus es una organización que surgió hace unos 30 años en Alemania y que ya se ha extendido a todo el mundo.

Hablemos de ¿cómo conseguir los certificados? En los tres casos tienes que pasar por un curso de formación y además pagar derechos de examen. En mi caso EVO fue más caro porque eran los inicios, pero hoy en día todos los cursos rondan los 1.800€ más unos 200€ de tasas de examen. Otro tema común a todos ellos es que hay una puntuación mínima bastante alta para aprobar (7 sobre 10) y además en los tres casos puedes tener los libros durante las 4 horas que dura el examen.

Ahora vamos a centrarnos en los contenidos y su utilidad en el trabajo. La duración del curso en Passivhaus es de unas 90 horas, mientras que en los dos restantes se reduce a la mitad más o menos. Desde mi punto de vista los dos primeros tienen un enfoque más orientado a ofrecer servicios exclusivos que sin el titulo no puedes hacer, mientras que Passivhaus te ofrece los fundamentos teóricos en los que se basa la energética edificatoria. Ten en cuenta que este último está desarrollado por físicos mientras que la AAE dispone de ingenieros, así que cada uno tiene su enfoque: fundamentos técnicos VS fundamentos prácticos.

En los últimos tiempos, las administraciones públicas están solicitando este tipo de certificados para poder optar a concursos públicos. Debido a ello las matriculaciones en estos cursos está aumentando en gran medida. No olvidemos que en torno a los certificados gira un gran negocio y que no acaba ahí la cos, pues en los tres casos tenemos que re-certifcarnos cada tres años.

Hoy en día la especialización es algo vital para que una empresa sobreviva. En Letter Ingenieros estamos comprometidos por conocer bien el mercado y por la formación de calidad, así que consideramos que certificarse en muy útil para diferenciarse de la competencia. 

Para terminar te contaré lo que yo haría si tuviera que elegir uno de ellos para comenzar mi especialización en energía. Si te dedicas a la eficiencia pero fuera del ámbito de los edificios huye del Passivhaus pues no tiene sentido. Estoy hablando de aquellos que trabajan en alumbrado público o industria. En este caso yo optaría por el CEM y hacer EVO como complemento o si vas a implantar medidas de ahorro. En el resto de casos, creo que elegir Passivhaus te va a dar un extra de conocimientos teóricos que ningún otro te puede ofrecer. Además de cara a la nueva normativa que ya llega, pienso que es el certificado con más recorrido que tendremos en España. Espero que te haya gustado, si tienes cualquier duda podemos hablarlo en los comentarios, en privado o en las redes sociales de Letter