The last rotor blades of the steam turbines in their low pressure section, work the steam with humidity. The combination of its high velocities with the existence of liquid microparticles presents a repeated impact on its surface, which will cause losses in the aerodynamic characteristics in the passage section, affecting its performance. This study evaluates the influence exerted by different physical parameters, such as the frequency of impacts, size of the drops that cause damage, impulse pressure, etc., on the erosion shown by the blades in the last stage of the low pressure section in a steam turbine under operating conditions equal to design.

Computer Program made in MATLAB that allows sustainable designs of lighting systems with Led lamps for different user requirements. The program requires as data the dimensions, reflectance, cavities and the desired lighting level of the work area to be illuminated and the type of LED luminaire to be used. The calculations are carried out in a deterministic, precise and exact way, using the lumens method and the Official Mexican Standard for lighting designs. The program provides information such as the total number of luminaires to be used, the calculated lux level, the electrical power density, among others, as well as a graph that indicates an adequate design for the accommodation and distribution of the lamps in the work area to be illuminated. , complying with the Lighting Design Standards. The program correctly performs each of the calculations and at the end delivers the most suitable design for the accommodation of the lamps and their distances. Correct lighting means achieving an optimal balance between human needs, architectural considerations and energy efficiency.

Design of a methodology, that uses image processing to monitor the pressure indicators of medical gas tanks (oxygen and nitrogen) used in hospitals to care for patients who require it. This system can notify the pressure level reported by the indicators and its contribution is the application of technology that prevents the displacement of medical or technical personnel to the gas installations, resulting in a remote monitoring system.

In the design of renewable energy projects, a present problem is the techno-economic evaluation of them, regularly different methods and models are used to do it, in this work it is proposed to innovate in the degree of Engineering in Renewable Energies (LIER) of the UNAM in the National School of Superior Studies Juriquilla campus the way to evaluate projects using the software RETScreen. This paper presents a methodology to evaluate a wind energy project in the state of Queretaro Mexico. The project contemplates a wind turbine brand VESTAS V44 - 40m of 600 kW capacity of 40 m height in the state of Querétaro in the center of the country of Mexico. The initial costs of this wind turbine are 1,283 $/kW or 770,000 USD, with a rate of 80 $/kW. The electricity exported to the grid is 1,703 MWh and the income from electricity exports is 136,235.52 USD. With this wind turbine you can save 1,318.2 tCO2 per year or 566,414 liters of unused gasoline.

Objective: Design of a methodology based on problem based learning, to program intelligent relays and solve process automation problems. Methodology that will allow students and engineers interested in acquiring theoretical, heuristic and axiological skills on intelligent relay programming. The methodology will allow to acquire the proposed competences and process automation problems can be solved. Contribution: The methodology is designed with solved exercises in electrical, civil and mechanical engineering, which allow us to visualize the importance of learning to program processes with intelligent relays. The methodology helps the programmer acquire a critical thinking considering aspects such as the environment, integral health and safety. There is transversality to relate Educational programs of different disciplines and enrich the knowledge of intelligent relays from the programming and interpretation of block diagrams, ladder diagrams and time diagrams, familiarize yourself with the use of technical language and digital language (combinational and sequential circuits Follow the safety instructions and parameters to be manipulated for the correct operation of the electrical and electronic devices and establish the operation of the process.