Projektowanie i optymalizacja systemów telekomunikacyjnych dla rozproszonej grupy farm fotowoltaicznych o mocy 1MW w Polsce

TFG (en Polonia conocido como "Bachelor of Engineering Thesis") del alumno Witold Bąk en su universidad de origen, la Lodz University of Technology. El alumno fue previamente alumno Erasmus en la Universidad de Alicante. El TFG ha sido cotutorizado por profesores de ambas universidades y ha sido redactado en inglés.After several months of work at I+D Energias, I learned about the construction process of photovoltaic farms in Poland from the perspective of an EPC (Engineering, Procurement and Construction) company. I had the opportunity to work with excellent people on various issues related to construction of the photovoltaic farm, mainly for communication needs. We have introduced optimization of farm monitoring & CCTV systems, which reduces costs and improves the quality of systems. The purpose of the project was to detect and define existing problems in communication needs in a scattered group of 109 photovoltaic farms in Poland of 1 MW each (43 for Energija dossier and 66 for Lords dossier). We optimised monitoring and CCTV systems, we improved the solution for the gateway to the Internet, comparing Energija and Lords dossier, and we introduced a new solution for inverter’s architecture for Lords dossier based on PLC technology, more convenient and compatible with Huawei inverters. All the new solutions and specific technologies presented in this thesis made the construction process a photovoltaic farm in Poland cheaper and faster.I+D Energías y Engineering Services Polsk

Analysis of possibility limiting the time of test injector in diesel engine using factory test bench producers of these elements

Regeneration of parts is the most correct form of use of worn out components and contributes, among others, to reduce CO2 emissions. In the case of elements of fuel injector systems, very high precision is required and such regeneration should be carried out using the original parts. It also requires testing on the original testing stands of these manufacturers, which very often characterized by the fact that it is not possible to perform a short test, which means that it is only possible to perform a time-consuming comprehensive test. An unquestionable advantage in some cases would be the possibility of preliminary verification of the correct operation of the regenerated subassembly without the need for a full time-consuming test. In the present situation, only after completing a time-consuming comprehensive test of the diagnosed element of the injection system, it is often necessary to carry out its disassembly, replacement or correction of one of the components and reassembly with the next time-consuming test. In the case of low unemployment in the labour market, this is extremely unfavourable, and it is often not possible to organize work in such a way that the diagnostic test of the subassembly takes place without the participation of an employee. On the basis of the analyses presented in this article, carried out in the research and development department in company whose employee is one of the co-authors, it can be stated that in the current situation on the labour market where skilled workers are required to work and for the development of science is the most purposeful recognition of the possibility of using vibroacoustic signals to shorten time of tests, which with a high probability may end in a negative result. The preliminary analysis carried out, show that limitation of diagnostic time can be over 35%

Improvement of exercise tolerance in cardiopulmonary testing with sustained safety after regular training in outpatients with systolic heart failure (NYHA III) and an implantable cardioverter-defibrillator. Prospective 18-month randomized study

Introduction: The aim of the study was to evaluate the impact of individual training on the level of physical capacity and echocardiographic parameters in patients with systolic heart failure (SHF), NYHA III and an implantable cardioverter-defibrillator (ICD). Material and methods : The study included 84 patients with SHF, randomly assigned to one of two groups: with regular training (ICD-Ex) and a control group (ICD-control). The ICD-Ex group participated in a hospital rehabilitation program which after discharge was individually continued for 6 months in an outpatient setting. The ICD-control group participated in a training program during hospitalization, but after discharge did not perform any controlled activities. Prior to discharge, at 6 and 18 months cardiopulmonary exercise testing (CPX), standard echocardiographic examination and the 6-minute walk test (6-MWT) were performed in all patients. Results : After 18 months in the ICD-Ex group most of the CPX parameters improved significantly (VO2 peak, ml/kg/min: 13.0 ±4.1 vs. 15.9 ±6.1, p < 0.0017; VCO2 peak, l/min: 1.14 ±0.34 vs. 1.58 ±0.65, p < 0.0008; Watt: 74.5 ±29.7 vs. 92.6 ±39.1, p < 0.0006; METs 3.72 ±1.81 vs. 4.35 ±1.46, p < 0.0131). In the ICD-control group no significant improvement of any parameter was observed. Left ventricular systolic dimensions remained significantly lower at 18 months only in the ICD-Ex group (49.5 ±11.0 vs. 43.4 ±10.0, p < 0.011). Left ventricular ejection fraction in both groups significantly increased at 6 and 18 months compared to baseline (ICD-Ex: 25.07 ±5.4 vs. 31.4 ±9.2, p < 0.001, vs. 30.9 ±8.9, p < 0.002, ICD-C: 25.1 ±8.3 vs. 29.2 ±7.7, p < 0.012 vs. 30.1 ±9.1, p < 0.005). Distance of the 6-MWT was significantly improved after 6 and 18 months in the ICD-Ex group and was overall longer than in the ICD-control group (491 ±127 vs. 423 ±114 m, p < 0.04). Conclusions : An individual, 6-month training program, properly controlled in patients with SHF and an implanted ICD, was safe and resulted in a significant improvement of exercise tolerance and capacity and echocardiographic parameters