Proposal of Conversion the Tugboat Engines to Diesel - LNG Operation

Jurkovič, Martin; Kalina, Tomáš; Jančošek, Ľubomír; Kadnar, Robert; Gorzelańczyk, Piotr; Jeřábek, Karel

doi:10.12913/22998624/113424

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Where S 0 is named the in-phase signal and S π 2 is usually named the amplitude signal. Both signals could be either positive or negative [14][15][16][17][18].…”

Section: Lock-in Thermographymentioning

confidence: 99%

Nondestructive Evaluation of BSCC Artificial Heart Valves

et al. 2022

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The subject of investigation is a set of four artificial heart valves made of electrically conductive material, namely the alloy Ti-6Al-4V. Notches of defined geometry with gradually increasing depth were formed on these BSCC (Bjork-Shiley Convexo-Concave) valves. These defects are created on the so-called output strut, which serves as a support mechanism for the controlled movement of the so-called occluder disc and they have been investigated. The method which was used is ultrasonic infrared thermography, where the object was excited by the UTVIS EDEVIS ultrasonic system and the response was detected by the FLIR SC 7200 infrared camera. The postulate for the use of this method is that the excitation signal may be periodically pulsate or in any other way modulated by certain amplitude frequencies, called "lock-in frequency". Lock-in thermography is a type of active lock-in method. The results of damage detection on these relatively complicated objects are compared and discussed.

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“…Where S 0 is named the in-phase signal and S π 2 is usually named the amplitude signal. Both signals could be either positive or negative [14][15][16][17][18].…”

Section: Lock-in Thermographymentioning

confidence: 99%

Nondestructive Evaluation of BSCC Artificial Heart Valves

et al. 2022

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“…Економічні переваги переведення дизельних силових приводів автомобільного транспо-рту на моногазовий режим пов'язані з наступним [2]: моногазове паливо суттєво дешевше за дизельне паливо, а дизельне паливо не подається взагалі; ресурс циліндропоршневої групи конвертованих двигунів за рахунок більш плавного зростання тисків згоряння збільшується в 1,3-1,5 рази; приблизно вдвічі зростає періодичність заміни моторних олив та масляних фільтрів моногазових двигунів за рахунок зниження нагароутворення, відсутності процесу змивання оливної плівки та зменшення розрідження моторної оливи.…”

Section: вступunclassified

Increasing the economic indicators of diesel engines by transferring them to gas-like products of conversion of methyl alcohol

Kryshtopa¹,

Kryshtopa²,

Mykytii³

et al. 2021

ogpe

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The work aimed at solving the problem of conversion of existing diesel power drives of oil and gas technological transport into gaseous fuels, which are a cheaper alternative to diesel fuel. A method has been proposed to increase the energy efficiency of alternative fuels. The thermochemical essence of increasing the energy of the source fuel has been developed. The choice of alternative alcohol fuel as a starting product for the conversion process, taking into account its cost and energy value. The calculations showed that the thermal effect from the combustion of converted CO and H2 exceeds the effect from the combustion of the same amount of liquid methanol. Compared to other alternative fuels, the cost of methyl alcohol is low, in addition, when using methanol as a fuel for diesel engines, you can significantly reduce emissions of soot particles and nitrogen oxides. This is due to the fact that the combustion of methanol in the diesel cylinder does not form intermediates that promote the formation of acetylene and aromatic hydrocarbons, which lead to the formation of soot. Methanol is a renewable natural resource, ie there is a large raw material base to increase its production and much wider use as an energy source. Using of this alcohol as an alternative biofuel for vehicles is possible as a result of its production in affordable and cheap ways from agricultural and food waste, from gaseous fuel. Fuel energy and engine power were increased by regenerating the heat of the exhaust gases. Experimental studies of power and economic performance of a diesel engine, which was converted to work on the products of methanol conversion. Experimental studies have shown that the conversion of diesel engines to work using methanol conversion products is justified. Given that the price of methanol is, on average, 10-20% of the cost of diesel fuel, the conversion of diesel engines to work using methanol conversion products is quite profitable.

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“…The economic advantages of converting diesel power drives of motor transport to monogas mode are related to the following [6]:…”

Section: Introductionmentioning

confidence: 99%

Increasing Parameters of Diesel Engines by Their Transformation for Methanol Conversion Products

et al. 2021

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The work is aimed at solving the problem of converting existing diesel power drives to gas fuels, which are cheaper and more environmentally friendly alternatives to diesel fuel. Method of energy efficiency increasing of alternative fuels has been improved. Thermochemical essence of energy increasing of source fuel based on the provisions of thermodynamics is considered. Alternative methanol fuel has been chosen as initial product for conversion process and its cost, energy value, and temperature conditions have been taken into account. Calculations showed that the thermal effect from combustion of the converted mixture of CO and H2 exceeds the effect from combustion of the same amount of non-convertible methanol. Fuel energy and engine power were increased due to thermochemical regeneration of exhaust gas heat. An experimental setup was created to study the operation of a converted diesel engine on methanol conversion products. Experimental studies of power, economic, and environmental parameters of converted diesel engine for methanol conversion products were performed. Experimental studies have shown that conversion of diesel engines to work using methanol conversion products is technically reasonable. Fuel consumption reduction was accompanied by environmental performance improvement of the diesel engine working together with a thermochemical methanol conversion reactor. Formation of nitrogen oxides in the exhaust gases decreased in the range of 22–35%, and carbon monoxide occurred in the range of 0–24% according to the crankshaft speed and loading on the engine. Conversion of diesel engines for methanol conversion products is very profitable, because the price of methanol is, on average, 10–20% of the cost of diesel fuel.

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Proposal of Conversion the Tugboat Engines to Diesel - LNG Operation

Cited by 5 publications

References 8 publications

Nondestructive Evaluation of BSCC Artificial Heart Valves

Nondestructive Evaluation of BSCC Artificial Heart Valves

Increasing the economic indicators of diesel engines by transferring them to gas-like products of conversion of methyl alcohol

Increasing Parameters of Diesel Engines by Their Transformation for Methanol Conversion Products

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