Please correct this An offshore oil platform is a large structure, attached to the Bed Sea, provided with all the facilities and devices required in drilling wells, extracting and processing different fossil fuels, such as oil or natural gas. Some of the most dangerous jobs are oil industry and offshore stations. In consequence, working in an offshore oil platform is plenty of hazards, and any staff has to be really careful to avoid and prevent accidents. The main hazards are the bad conditions outside, such as cold, cloudy, rainy or windy weather; and the uses of toxic and flammable fluids. In order to prevent accidents is important to ensure that the staff avoids any unsafe situation. To prevent to fall down from the base to the water, a safe net and hand railing should be installed, furthermore, it is recommended that any staff working outside, when bad weather conditions, wears a harness and lifejacket. To prevent for fires, and toxic liquids or fumes, it is required to install a large system of detectors to monitoring the air quality and temperature in the whole station, paying special attention to small and confined spaces. The system should include alarms, ventilation to work in case of accident. Thanks for your corrections forehand!

Geothermal Energy. Please correct it This text is supposed to be the transcription of an oral presentation, so I'm sorry if it is a mess and you don't understand it. However, I'd be please if you could correct any mistake. Thanks forehand. Hello, I'll talk to you about Geothermal Energy, also, I'll focus on 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 applications for each one. However, we're focusing on very low temperature source, since it is the only one we can find easily in Spain. Geothermal Power Plants are not very important, as there are not more than 10 GB installed. However, it is important in countries like Iceland, El Salvador or the Philippines. There are two different kinds of Geothermal Power Plants. Here we can see that we use the dry steam from the ground directly. When the ground cannot supply dry steam a heat exchanger is required, as it is 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 o 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 even vertical one is much more expensive, it is commonly used, as horizontal one has significant handicaps. You might be wondering if a geothermal heat pump can be used in any kind of building. Let me say that it is. I have differents examples to show you that. A bank's new headquarters, a block of flats and a detached house. The three projects in Madrid, by the way.

Please correct it. Engineering design The main topic of the video is how has changed the engineering design in the last century. It explains that engineering design is influenced by politics, wars and great achievement. Being the main languages using in engineering design publications, the speaker examines the different tents of different languages from the First World War to nowadays. In 1917, due to the First War War the number of publications drop, however, few years later, after the Russian Civil War finished, engineering publications increased in that country. During the Second World War, in the most of countries the publications descended, but in Japan. After the first nuclear weapon demonstration, and also because of the space race, the publications in Russia were raised. In the last years, new topics has become important, e.g. Final Element Methods. At the end, the speaker says that the most important language nowadays is English, mainly in business and technology.

alright vs all right? altogether vs all together? can you happen give different examples? thanks for you help!

Please correct this. Off-shore station The offshore base station is designed to provide the structure needed for the space elevator. It is used to receive the payloads and to avoid problems with lamps of space debris. In order to be easily transported, the base station is located offshore. However, this is a problem concerning to deliveries. Payloads have to reach the station by ship, and they cannot stay at the base for a long time due to the weight. The complex base station would be expensive, so it is important to make it as cheaper as possible. There are two main parts of the budget what cannot be cut. The first one is the expensive in materials, the structure must be made in good steal to be strong, light and resist the action of the brine. The second one is the size of the station, as it has to be spacious enough for payloads in stock; strong enough to hold the cable and resit the waves if it was near to the shore. It would be also necessary supply with a powerful system for propulsion because of the heavy cable. Apart from that, this powerful system would be useful in case an urgent moved is needed.On one hand, this structure could be very interested to provide special stations with payloads and goods. On the other hand it seem to be hardly viable, it is a very ambitious project with a huge budget. In conclusion, it is not clear at all this project could become profitable.

New material. Please correct this. Military people depend upon body armor to be able to work safely This new one provides the army with a body armor to protect the soldiers from combat hazards, not only ballistic projectiles but also explosive fragmentatio. This product made of a new material is lightweight and comfortable enough to allow soldiers to move. As it is lightweight, it reduces markedly the fatigue for soldiers. Even being less heavier, it is stronger than steel.

'so on' is this expression formal or informal? I'd like to know if the expression 'and so on' fixes well in a formal context.

who is used 'also'? I'm not sure what is the structure to use 'also'. If I should put it before or after the main verb or auxiliary verb.

Please correct this. HVAC with renewable energy Price of energy is been raised markedly during the economic crisis years, and it will continue raising after it as the fossil fuel stock is being run lower. For that reason, it is very important to find a new way that we use the energy, it is needed to find a more efficiency way. I’m talking here about one of the process which take more primary energy consumption for people, HVAC and production of DHW. HVAC means Heating, Ventilation and Air Conditioning, and it is used to keep a building in a comfortable temperature. DHW means Domestic Hot Water and it is a is a thermodynamic process that uses an energy source to heat water above in order to make it useful for cooking, cleaning, bathing, and so on. And apart from that, in industry, hot water and water heated to steam have many uses. In domestic buildings, the most common source used for heating is gas natural, a fossil fuel. The performance of this source is not very efficient, and I will talk here about a much more efficiency performance. That is geothermal energy performance by a geothermal heat pump. A heat pump allows us, by power consumption, heating the hot point cooling the cold point. As we are talking about heating and DHW, the GHP is used to transfer heat from the ground; and it can be also used for cooling, transferring heat from the building to the ground. In Madrid, where the ground has an average temperature of 17ºC, a GHP can work with a Coefficient of Performance up to 5. That means it permit to transfer 5 units of thermal energy per one unit of electrician energy. Using the ground resource instead of natural gas, it is possible to avoid CO2 emissions and reduce a 30% the cost of the energy in HVAC and DHW. Apart from the high efficiency provided by the Geothermal Heat Pump, there are other strong point, as this engine permits to get heating, cooling and Domestic Hot Water from the same engine. You only need one system to keep your building comfortable. Thanks for your collaboration!