Improving the efficiency of railway conditioners in actual climatic conditions of operation

Radchenko, N.; Radchenko, Andrii; Tsoy, A. P.; Mikielewicz, Dariusz; Kantor, Serhiy; Tkachenko, Veniamin

doi:10.1063/5.0026789

Cited by 19 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various methods including ANSIS [35][36][37], statistical methods for processing monitoring data and ambient air parameters [38,39] [40][41][42]. The most of wellknown concepts of increasing the efficiency of trigeneration plant are limited to engine out-cycle use of refrigeration capacity and issue from conventional trigeneration with ACh [17,18].…”

Section: Literature Reviewmentioning

confidence: 99%

Innovative combined in-cycle trigeneration technologies for food industries

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Innovative combined in-cycle trigeneration technologies for food industries

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The technical innovations in waste heat recovery [15,16] including transport application [17,18] might be successfully applied in TIAC: two-stage intake air cooling [10], deep exhaust heat utilization [19,20]. The heat potential for converting in refrigeration can be increased due to low-temperature condensation [21,22].…”

Section: Literature Reviewmentioning

confidence: 99%

Gas turbine intake air hybrid cooling systems and their rational designing

Radchenko

Mikielewicz

et al. 2021

E3S Web Conf.

View full text Add to dashboard Cite

The general trend to improve the fuel efficiency of gas turbines (GT) at increased ambient temperatures is turbine intake air cooling (TIAC) by exhaust heat recovery chillers The high efficiency absorption lithium-bromide chillers (ACh) of a simple cycle are the most widely used, but they are not able to cool intake air lower than 15°C because of a chilled water temperature of about 7°C. A two-stage hybrid absorption-ejector chillers (AECh) were developed with ejector chiller as a low temperature stage to provide deep air cooling to 10°C and lower. A novel trend in TIAC by two-stage air cooling in chillers of hybrid type has been proposed to provide about 50% higher annual fuel saving in temperate climatic conditions as compared with ACh cooling. The advanced methodology to design and rational distribute the cooling capacity of TIAC systems that provides a closed to maximum annual fuel reduction without oversizing was developed.

show abstract

“…Modern methods, including ANSIS [31][32][33], can be used for simulation and optimizing the processes. Some of methodological approaches gained in waste heat recovery refrigeration [34,35] might be successfully applied in air conditioning to choose design refrigeration capacity to match current cooling demand [36,37]. All the typical methods, based on the current or summarized annual refrigeration energy production, issue from the assumption of a design refrigeration capacity to cover maximum conditioning needs over the full range of yearly operating conditions [38][39][40].…”

Section: Literature Reviewmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Improving the efficiency of railway conditioners in actual climatic conditions of operation

Cited by 19 publications

References 30 publications

Innovative combined in-cycle trigeneration technologies for food industries

Innovative combined in-cycle trigeneration technologies for food industries

Gas turbine intake air hybrid cooling systems and their rational designing

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

Contact Info

Product

Resources

About