Monitoring the efficiency of cooling air at the inlet of gas engine in integrated energy system

Radchenko, Andrii; Scurtu, Ionuţ Cristian; Radchenko, Mykola; Forduy, Serhiy; Zubarev, A. G.

doi:10.2298/tsci200711344r

Cited by 25 publications

(25 citation statements)

References 36 publications

(37 reference statements)

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“…The results of monitoring a gas engine fuel efficiency were presented in the form of data sets on dependence of fuel consumption Be = f(tin), power output Pe = f(tin) and specific fuel consumption be =Bf /Pel , as a result, upon the air temperatures tin at the inlet of the engine turbocharger. A method for processing the monitoring data on fuel consumption and power output of gas engine was developed [6][7][8].…”

Section: Methodsmentioning

confidence: 99%

“…The goal of processing the monitoring data sets Pe = f(tin), Be = f(tin) and be = f(tin) was to calculate the value of the change in specific fuel consumption be caused by the change in the engine inlet air temperature tin by 1 °С, as be/tin, to evaluate the fuel saving effect due to application of advanced two-stage air cooling [6][7][8].…”

Section: Methodsmentioning

confidence: 99%

“…A refrigeration capacity, generated by absorption lithiumbromide chiller (ACh), that recovers the heat released from the engine, can be used (in addition to technological or other needs) for engine intake air cooling (EIAC) as in-cycle trigeneration [5,6]. This provides not only improvement of engine fuel efficiency, but also prolong the time of efficient operation of trigeneration plant [7,8], since cooling demands for technological needs have, as a rule, periodic character.…”

Section: Introductionmentioning

confidence: 99%

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Innovative combined in-cycle trigeneration technologies for food industries

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The majority of integrated energy systems (IES) for combined electricity, heat and refrigeration generation, or trigeneration, are based on gas engines. The fuel efficiency of gas engines are strictly influenced by intake air temperatures. Practically in all IES the absorption lithium-bromide chillers (ACh) are applied for conversing the heat removed from the engine into refrigeration in the form of chilled water. The peculiarity of trigeneration in food industries is the use of chilled water of about 12°C for technological needs instead of 7°C as typical for ACh. This leads to a considerable great potential of engine intake air deeper cooling not realized by ACh, that can be used by ejector chiller (ECh) as the low temperature stage of two-stage absorption-ejector chiller (AECh) to provide engine cyclic air deep cooling and enhancing engine fuel efficiency. To evaluate the effect of gas engine cyclic air cooling the data on fuel consumption and power output of gas engine JMS 420 GS-N.L were analyzed.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Innovative combined in-cycle trigeneration technologies for food industries

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“…Одним з найбільш ефективних напрямків підвищення паливної ефективності енергетичних установок на базі газотурбінних двигунів (ГТД) і двигунів внутрішнього згоряння (ДВЗ) є комплексна утилізація високо-та низькопотенційної теплоти [1]. Особливо цікавим з цієї точки зору є застосування тепловикористовуючих холодильних машин в установках комбінованого виробництва енергії (когенерація, тригенерація) як для суднової так і для стаціонарної енергетики [2].…”

Section: вступunclassified

Аналіз Ефективності Ежекторних Холодильних Машин На Різних Холодоагентах

Radchenko¹,

Коновалов²,

Фордуй

et al. 2021

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Modern heat-using ejector refrigeration machines used in heat recovery systems for power plants based on gas turbine engines and internal combustion engines have many advantages over absorption refrigeration machines: smaller dimensions and weight; the ability to obtain lower temperatures. However, they are inferior in energy efficiency, and the thermal coefficient is much lower and can be 0.2…0.4. The efficiency of such refrigeration machines largely depends on the choice of the working fluid (refrigerant). Hence the need to choose a refrigerant that would provide the maximum heat factor, and hence the maximum efficiency of heat recovery. Given the relatively low efficiency of the ejector refrigeration machine, the search for a working fluid that will provide, on the one hand, higher thermal coefficients, and on the other hand high environmental friendliness, is one of the promising areas of development of heat recovery technologies in power plants. The study used the software complex developed by the authors to calculate the refrigeration cycles of heat-using refrigeration machines, taking into account the properties of many modern refrigerants, ejector characteristics, as well as basic heat exchangers (condenser, evaporator, generator). The efficiency of ejector refrigeration machines when working on the following working bodies was analyzed: R142b, R134a, R600, R600a, R1234ze(E), R1233zd(E), R1234yf, R227ea, R236fa, R245fa. R142b, R600, R600a, R245fa have the largest values of thermal coefficients. It is established that the most profitable in terms of environmental friendliness (ODP, GWP) and energy efficiency is the use of refrigerant R245fa, which has a condensation temperature range is 25…35 oC and boiling in the evaporator is 0…15 oC thermal coefficient is 0.40…1.03.

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“…In a number of investigations the air conditioning is considered as one of the technologies for combined cooling, heating and power (CCHP) [17,18], or trigeneration [19,20]. Some innovative technics in engine intake air cooling [21,22] and waste heat conversion might be implemented in ACS.…”

Section: Literature Reviewmentioning

confidence: 99%

Alternative variable refrigerant flow (VRF) air conditioning systems with rational distribution of thermal load

et al. 2021

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One of the most attractive reserves of enhancing the energetic efficiency of air conditioning systems (ACS) is to provide operation of compressors in closed to nominal modes by choosing the rational design refrigeration capacities and their distribution according to current thermal loading to provide closed to maximum annual refrigeration energy generation. Generally, the overall thermal load band of any ACS comprises the unstable load range, corresponding to ambient air precooling with significant load fluctuations, and a comparatively stable load part for further air conditioning from a threshold temperature to a target value. The stable thermal load range can be covered by operation of conventional compressor in closed to nominal mode, meantime ambient air precooling needs load modulation by applying a variable speed compressor. A proposed ACS enables a wide range of refrigerant flow variation without heat flux drop in air coolers and can be considered as advanced alternative to variable refrigerant flow systems.

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Monitoring the efficiency of cooling air at the inlet of gas engine in integrated energy system

Cited by 25 publications

References 36 publications

Innovative combined in-cycle trigeneration technologies for food industries

Innovative combined in-cycle trigeneration technologies for food industries

Аналіз Ефективності Ежекторних Холодильних Машин На Різних Холодоагентах

Alternative variable refrigerant flow (VRF) air conditioning systems with rational distribution of thermal load

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