Dynamic Simulation and Optimum Operation Strategy of a Trigeneration System Serving a Hospital

Calise, Francesco; d’Accadia, Massimo Dentice; Libertini, Luigi; Quiriti, Edoardo; Vicidomini, Maria

doi:10.3844/ajeassp.2016.854.867

Cited by 18 publications

(8 citation statements)

References 13 publications

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“…In order to find the COP value of the feasibility system, 𝑄 = 𝑚. 𝑐. ∆𝑇 (𝑘𝐽) (7) In the most general terms, from the data sheets given by the manufacturer of the Gas Motor and Multi ABS Chiller, which we have chosen for the trigeneration system that we have made the feasibility of respectively, ➢ Jacket temperature of 1203 kW Gas Motor, ➢ It has been given that useful heat energy can be obtained from the exhaust gases [18], which are released as 421℃ with the operation of the 985 kW gas motor. ➢ For the Multi ABS Chiller, it is stated that 10.360 kg/h of waste heat (flue gas-exhaust gases) can circulate in the entire system per hour.…”

Section: Table 6 Exergic and Energy Analysis Findings In Case The Fea...mentioning

confidence: 99%

Exergy and Energy Analysis for a Feasibility Trigeneration System at Kocaeli University Umuttepe Campus

Kadıoğlu

Altınay

2022

Preprint

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In this study, a feasibility of the trigeneration system, which is one of the on-site energy production methods, was prepared for Kocaeli University Umuttepe Campus, and energy and exergy analyses were made for each point of the system and exergy destruction in the lines was found. It is aimed to be able to produce the energy, which is the most basic indicator of sustainability, at the closest point to the consumption place, thus keeping the distribution and transmission losses at a minimum level and dimensioning the designed system. The key point of the gains, losses and efficiency analyses in the lines is presented with engineering calculations based on thermodynamic proofs, exergetic efficiency and losses, the energy and balance equations of the whole system, and the feasibility of the entire trigeneration system, including mathematical modeling, energy analysis, the whole system in II. Law Efficiency, COP, Thermal efficiency were calculated. The seasonal working methods were shown by the numerical analyses prepared in the summer and winter working disciplines of the system effectively and the seasonal working methods were found and the working conditions and operating load values suitable for the current season of the system were found. In addition, by performing separate mathematical models for summer and winter mode, in the light of the above-mentioned technical studies, both the reduction in the energy production costs of the country thanks to the energy that the university will produce in-house, the reduction of foreign dependency in energy demand, a feasibility report ready for investors and an academic. In this sense, it is aimed to present a ready-to-use design of a medium-sized power plant that will set an example for trigeneration studies. From the designed system; 66% exergic efficiency in winter, thermal efficiency 0.87411 with 2.05 MW thermal capacity, 63% exergic efficiency in summer, COP 0.82 and 1.5 MW cooling capacity, and 2.02 MWe instantaneous electrical power was found in summer and winter. The results have shown us that the designed system can be a facility that is open to development and worth establishing with the results obtained technically. Based on the current applications made so far, it has been determined that there are similar results between the studies in the literature and the exergy and energy analyses of the trigeneration system, which we have made feasibility in Umuttepe campus and are close to the findings obtained in the calculations in the literature.

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Section: Table 6 Exergic and Energy Analysis Findings In Case The Fea...mentioning

confidence: 99%

Exergy and Energy Analysis for a Feasibility Trigeneration System at Kocaeli University Umuttepe Campus

Kadıoğlu

Altınay

2022

Preprint

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“…For example, helicopters or light recreational aircraft are subject to simpler and cheaper approval procedures than commercial aviation (Rulkov et al, 2016;Agarwala, 2016;Babayemi, 2016;Catana et al, 2017;Cican et al, 2018Cican et al, , 2019Cican et al, , 2020Deaconu et al, 2020, Deaconu andGusti and Semin, 2016;Mohamed et al, 2016;Wessels and Raad, 2016;Rajput et al, 2016;Rea and Ottaviano, 2016;Zurfi and Zhang, 2016a;Popa et al, 2019;Zheng and Li 2016;Buonomano et al, 2016a;Faizal et al, 2016;Ascione et al, 2016;Elmeddahi et al, 2016;Calise et al, 2016;Morse et al, 2016;Abouobaida, 2016;Rohit and Dixit, 2016;Kazakov et al, 2016;Alwetaishi, 2016;Riccio et al, 2016a;Iqbal, 2016;Hasan and El-Naas, 2016;Al-Hasan and Al-Ghamdi, 2016;Jiang et al, 2016;Sepúlveda, 2016;Martins et al, 2016;Pisello et al, 2016;Jarahi, 2016;Mondal et al, 2016;Mansour, 2016;Al Qadi et al, 2016b;Campo et al, 2016;Sama...…”

Section: Introductionmentioning

confidence: 99%

Some Aspects of Modern Drones

Petrescu¹

2021

Journal of Aircraft and Spacecraft Technology

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Today drones have become so important that everyday life can no longer be conceived without them. The paper wishes to present some essential aspects regarding modern drones, their capabilities and their uses. Drones and minnies drones have penetrated deep into technology, industry, agriculture, the military and police area, security services, security and control, aerial surveillance, signaling, aerial filming, cartography, da nger and fire signaling in a timely manner, surveillance missions, security, defense and attack. The major advantages of drones compared to conventional aircraft are the following: A much lower fuel consumption and a much lower polarization of the environment, sometimes the pole does not even exist the drones being electrically moved; much lower design, manufacturing, maintenance and operation prices. They do not require pilots, they are generally small and the manufacturing costs and materials are much reduced; in case of collisions they are very resistant, accidents with them being rare and without tragic consequences; they can operate various things without a pilot, without costs, without risks, with superior results to those of classic aviation. A simple way to reduce the consumption of raw materials needed by industries is the very economy of materials used in industries and the start must be made even with heavy industries and car manufacturers and primarily those in aviation and aerospace. With drones, the consumption of materials is extraordinary compared to the materials stored in old, classic, huge ships. Of course, large public aircraft are still needed for public passenger transport, which, no matter how redesigned, will still consume a lot of materials and energy, but for other daily air operations, drones will be able to successfully intervene in place of large and heavy ships. These areas will see huge savings in materials, not to mention the very low costs of people who will be replaced by robots, vending machines, cameras, low fuel consumption and the reduction and even elimination of massive pollution that was done by a massive use of large aircraft for any minor operations requiring flights. The drones come to usefully and efficiently complete large and important areas of flight, difficult and meticulous operations, the drones clearly having increased capabilities and much higher penetration.

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“…With three engines, Boeing's first aircraft was built with the sole intention of being a passenger transport. A modernized version, 80A, carrying eighteen passengers, made the first flight in September 1929 (Rulkov et al, 2016;Agarwala, 2016;Babayemi, 2016;Gusti and Semin, 2016;Mohamed et al, 2016;Wessels and Raad, 2016;Rajput et al, 2016;Rea and Ottaviano, 2016;Zurfi and Zhang, 2016a;Zheng and Li, 2016;Buonomano et al, 2016a;Faizal et al, 2016;Ascione et al, 2016;Elmeddahi et al, 2016;Calise et al, 2016;Morse et al, 2016;Abouobaida, 2016;Rohit and Dixit, 2016;Kazakov et al, 2016;Alwetaishi, 2016;Riccio et al, 2016a;Iqbal, 2016;Hasan and El-Naas, 2016;Al-Hasan and…”

Section: Introductionmentioning

confidence: 99%

Boeing's Autonomous Military Aircraft

Petrescu¹

2019

Journal of Aircraft and Spacecraft Technology

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Boeing will build a self-propelled military aircraft to accompany US combat aircraft during missions. Boeing's autonomous airplane will achieve superior flying performance to those pilots even with the most modern aircraft. If technology advances and becomes more accessible to civilians, why would not this happen in the military domain? US, Russian, Australian and British armies have already been using advanced technology for decades were civilians just dream, these technologies being totally secret and forbidden to the general public and mass media. Boeing, which manufactures commercial and military aircraft, wants to revolutionize the "art of war" and introduce a state-of-the-art, self-propelled aircraft into the battlefield to adapt to a variety of complex military missions. They called it the Boeing Airpower Teaming System because it will team up well with military pilots during reconnaissance missions or even hostility or defensive missions. This autonomous airplane will play the role of additional help designed to significantly reduce the risks to which soldiers are often exposed. The stand-alone aircraft can be sent both on reconnaissance missions and for attack operations (either for defense or for the removal of targets considered terrorist). He will be able to intercept the enemy in good time and to annihilate it. It will be manufactured in Australia and it will have a length of more than 11 meters and Boeing promises autonomy of over 3,700 kilometers (2,000 nautical miles). Obviously, the company will not only produce for Americans or Australians. Any government will be able to purchase the autonomous airplane if it allows it (at least theoretically, because sales of such products are basically also with special political agreements). It is very likely that in the future, we will not even have much need for soldiers if the missions are carried out by autonomous airplanes or robots. Good news, as democracies have come to pay citizens to motivate them to become soldiers.

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Dynamic Simulation and Optimum Operation Strategy of a Trigeneration System Serving a Hospital

Cited by 18 publications

References 13 publications

Exergy and Energy Analysis for a Feasibility Trigeneration System at Kocaeli University Umuttepe Campus

Exergy and Energy Analysis for a Feasibility Trigeneration System at Kocaeli University Umuttepe Campus

Some Aspects of Modern Drones

Boeing's Autonomous Military Aircraft

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