Enhancement of the Operation Efficiency of the Transport Air Conditioning System

Radchenko, Mykola; Mikielewicz, Dariusz; Tkachenko, Veniamin; Klugmann, Michał; Andreev, Andrii

doi:10.1007/978-3-030-50491-5_32

Cited by 25 publications

(12 citation statements)

References 17 publications

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“…The efficiency of refrigeration chillers and the whole cooling systems can be increased through intensification of heat transfer in heat exchangers [23,24] first of all of refrigerant boiling in evaporators [25,26] and by application of advanced coolant (refrigerant) circuits with injector [23,27], evaporative [28,29] and two-stage cooling [30] with heat conversion in combined chillers [31].…”

Section: Literature Reviewmentioning

confidence: 99%

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

et al. 2022

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The fuel efficiency of gas engines is effected by the temperature of intake air at the suction of turbocharger. The data on dependence of fuel consumption and engine electric power on the intake air temperature were monitored for Jenbacher gas engine JMS 420 GS-N.LC to evaluate its influence. A waste heat of engine is rejected for heating water to the temperature of about 90??. The heat received is used in absorption lithium-bromide chiller to produce a cold in the form of chilled water. A cooling capacity of absorption chiller firstly is spent for technological needs and then for feeding the central air conditioner for cooling the ambient air incoming the engine room, from where the air is sucked by the engine turbocharger. The monitoring data revealed the reserves to enhance the efficiency of traditional cooling system of intake air by absorption chiller through deeper cooling. This concept can be realized in two ways: by addition cooling a chilled water from absorption chiller to about 5-7?? for feeding engine intake air cooler or by two-stage cooling with precooling ambient air by chilled water from ACh in the first stage and subsequent deep cooling air to the temperatures 7-10?? in the second stage of intake air cooler by using a refrigerant as a coolant. In both cases the ejector chiller could be applied as the most simple in design.

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Section: Literature Reviewmentioning

confidence: 99%

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

et al. 2022

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“…Modern methods, including ANSIS [24][25][26], can be used for simulation 27, 28 and optimizing 29-31 the processes and regimes of operation as well as statistical treatment of experimental data [32][33][34]. For estimating the efficiency of such greening and fuel saving technologies during the operation in actual climatic conditions various methods of modelling [35,36] are applied.…”

Section: Literature Reviewmentioning

confidence: 99%

Absorption of pollutants from exhaust gases by low-temperature heating surfaces

Kornienko¹,

Radchenko²,

Radchenko³

et al. 2021

E3S Web Conf.

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One of the most effective methods aimed to improving the environmental safety is fuel oil combustion in the form of specially prepared water-fuel emulsions. The combustion of water-fuel emulsion in internal combustion engines makes it possible to reduce a rate of low-temperature corrosion at wall temperatures below the dew point temperature of sulfuric acid vapor, to install a condensing lowtemperature heating surface in the exhaust gas boiler that leads to increase the efficiency of boiler. Therefore, it is of great importance to assess the effect of the presence of condensate (water, acid) and pollution on these surfaces on the processes of NOx, SO2 absorption from exhaust gases. Investigations of SO2, NOx and particulate matter emission were carried out on the experimental installation for fuel oil and water-fuel emulsion combustion with different water content. Using condensing heating surface enables to reduce the concentration of NOx and SO2 by 65 %. Experimental studies have shown that condensing heating surface ensures the capture of up to 30 % of particulate matter from the exhaust gas flow.

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“…Вироблений холод використовується для систем комфортного або технологічного кондиціювання повітря [3,4], а також в системах охолодження теплових двигунів енергоустановок [5], що є одним з перспективних напрямків застосування таких машин у складі установок комбінованого виробництва енергії [6,7]. Таке рішення істотно знижує витрати на холодопостачання, звідси і підвищений інтерес до хо-лодильних машин, які використовують низькопотенційну теплоту [8,9]. Одними з найбільш перспективних є ежекторні холодильні машини (ЕХМ) на низькокиплячих робочих тілах (НРТ) -холодоагентах [10,11].…”

Section: вступunclassified

“…Програмний комплекс застосовано при розробці та аналізі схемних рішень ЕХМ у складі контурів утилізації теплоти тригенераційних установок на базі двигунів внутрішнього згоряння та газотурбінних двигунів [8,9,13].…”

Section: розробка програмного комплексуunclassified

Моделювання Та Програмний Комплекс Для Дослідження Функціонування Ежектора В Змінних Режимах

Коновалов¹,

Radchenko²,

Фордуй

et al. 2021

reks

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One of the current directions of development of modern energy-saving and energy-efficient technologies for ship and stationery (including municipal) energy is the use of ejector refrigeration machines, which can be used for air conditioning systems together with an absorption refrigeration machine (cascade cycle) or vapor compressor refrigeration machine as part of cogeneration or trigeneration units. Such circuit solutions can be used together with ensuring the rational organization of work processes in the main elements of the refrigeration machine, in particular in the jet device - ejector, the appropriate design of which, in turn, will further increase the thermal coefficient. Improving the design of the ejector is a rather complex and long process and does not always give positive results. It is primarily because many tests are required on full-scale models. Therefore, computer simulation of the ejector operation at different variable input parameters, considering the geometric characteristics of the flow part and variable mode characteristics during operation is more attractive in terms of finding options for rational (optimal) design. The paper presents the results of software development for modeling hydrodynamic processes in the flowing part of the ejector, considering the variable operating modes of the ejector refrigeration machine. The existing method for calculating the pressure and circulation characteristics of jet devices is used. The developed software complex "RefJet" in the design mode defines the maximum achievable coefficients of ejection of a jet ejector. In the simulation mode - provides determination of the ejection coefficients of the already designed (certain sizes) ejector at variable values of pressure at the inlet and outlet in specific operating conditions, considering its operation at the limit and partial modes. The work of the software package was tested in the development and analysis of circuit solutions of ejector refrigeration machines as part of the heat recovery circuits of three-generation units based on internal combustion engines and gas turbine engines.

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Enhancement of the Operation Efficiency of the Transport Air Conditioning System

Cited by 25 publications

References 17 publications

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

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

Absorption of pollutants from exhaust gases by low-temperature heating surfaces

Моделювання Та Програмний Комплекс Для Дослідження Функціонування Ежектора В Змінних Режимах

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