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Hello! I've lived in Canada for 20 years and speak fluent English and Russian. I'm learning Spanish somewhat seriously, and learning French and Ukrainian casually.
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Spanish
French
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EnglishNative
RussianNative
Ukrainian
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Activities
Hello. Today, I'll be talking to you about Geothermal Energy and its applications in HVAC and DHW.
Geothermal Energy is the thermal energy generated and stored in the Earth. We can see here a classification of the different geothermal sources by temperature and application. We'll focus on very low temperature sources, since they are the only one that we can easily find in Spain.
Geothermal Power Plants are not very widespread, as there are not more than 10 GB installed worldwide. It is only widespread in Iceland, El Salvador, and the Philippines.
There are two different kinds of Geothermal Power Plants. Here, we can see that dry steam is used directly from the ground. However, when the ground cannot supply dry steam, a heat exchanger is required, as shown in the picture.
When we don't have neither a working fluid nor enough temperature, we have to work with brine and a geothermal heat pump to increase or decrease the temperature.
I'll explain briefly the different configurations exist in ground heat exchangers. The ground loops can be open or closed. The most common used in Spain is the closed one, since it is not easy to find underground water.
Furthermore, if we compared vertical and horizontal loops, we'd find that although the vertical one is much more expensive, it is nonetheless more commonly used, as the horizontal one has significant drawbacks / disadvantages.
You might be wondering if a geothermal heat pump can be used in any kind of building. I am happy to say that it can. I have different examples to demonstrate its versatility. A bank's new headquarters, a block of flats and a detached house.
These three projects are all in Madrid, by the way.0 votedMay 6, 20150- Carta de presentación para profesor de inglés - english teacher cover letter Hola, Tengo experiencia con actividades docente con el idioma inglés, así como la música y el idioma ruso. Tutora en la escuela secundaria, y estoy tutorando inglés por Internet. Me enamoré con la ciudad de ... cuando lo visité varias veces el año pasado, mientras estaba trabajando en un crucero. Adjunto encontrarán mi Curriculum. Espero tener la oportunidad de conversar con usted en una entrevista por teléfono o Skype. Gracias por su consideración.April 13, 201560
Today was the first day back at school. It was also my first day in a higher level class.
I have been out of practice with English, so I wasn't on the ball in class. I have to study tonight.
I hung out with my Japanese classmate. We chatted a lot. I wanted to get back the skill of speaking fluently as soon as possible. I felt relaxed to speak English with her. I had a good time with her.0 votedApril 13, 20151Physical attraction
'For and against' about how important is physical attractiveness.
* Introduction
Both society and marketing are always reminding us about the huge importance of physical attraction. In fact, from we are teenagers to adult age, the message is very clear: we need to be attractive and we need a great look for our friends take us seriously.
* The advantages of being attractive
Obviously, being attractive person has a lot of advantages; girls and men will be jealous of you, and although it's a little bit sad, you will even have a better chance of finding a job.
* Being attractive is not everything
Despite these advantages, being attractive is not everything; in the more demanding jobs, you need to be really intelligent, or else people will notice that you only have the looks but not the brain. You should be careful with that.
* In Conclusion
To sum up, you really need to be aware of in life is who we are, not how attractive you are.
Thanks a lot for your review.
It's very helpful to me.0 votedApril 13, 20151Sport
Sports are great. Many people do not like to play sports, but I believe that they just haven't found the right one. If you do not like to run, or do not like the gym, maybe you will like martial arts or dance styles. All of them can help you develop not only endurance and coordination, but also improve your mood. Scientific evidence shows that physical movement produces happiness hormones called endorphins. They are responsible for making us feel good.
0 votedApril 13, 20150
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