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Journal articles on the topic 'Cycle air'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Shmeleva, Elizaveta A., and Ivan A. Arkharov. "Selection of the optimal air liquefaction cycle for liquid air energy storage." MATEC Web of Conferences 324 (2020): 01007. http://dx.doi.org/10.1051/matecconf/202032401007.

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The report analyzes and selects the liquefaction cycle for Liquid Air Energy Storage. The specific liquefaction coefficient and the coefficient of thermodynamic perfection were calculated for the following cycles: the Linde-Hampson cycle, the Claude cycle, the Heylandt Cycle, the Collins cycle, and the cycle with two expanders. The criterion for optimizing cycles is the maximum value of the liquefaction coefficient. The Claude cycle was chosen as the optimal cycle for use in the Liquid Air Energy Storage. Its exergy efficiency was calculated.

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2

Merzvinskas, M., C. Bringhenti, J. T. Tomita, and C. R. de Andrade. "Air conditioning systems for aeronautical applications: a review." Aeronautical Journal 124, no. 1274 (2019): 499–532. http://dx.doi.org/10.1017/aer.2019.159.

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ABSTRACTThis paper presents a review of the various aeronautical air conditioning systems that are currently available and discusses possible system configurations in the context of the aeronautical environmental control systems. Descriptions of the standard vapor compression cycle and air cycles are provided. The latter includes, simple-cycle, bootstrap-cycle, simple-bootstrap cycle (3-wheel) and condensing cycle (4-wheel). Water separation and air recirculation systems are also explored. A comparison between vapor compression cycles and air cycles is provided, as well as a comparison between

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3

Yang, Xiaoling, Zhefeng Wang, Ze Zhang, Shuangtao Chen, Yu Hou, and Liang Chen. "Thermodynamic Analysis of Air-Cycle Refrigeration Systems with Expansion Work Recovery for Compartment Air Conditioning." Applied Sciences 12, no. 10 (2022): 5287. http://dx.doi.org/10.3390/app12105287.

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As a requirement for sustainable development, air-cycle refrigeration has received wide attention as a candidate for environmentally friendly air conditioning technology. In this study, the thermodynamic performance of air refrigeration cycles is investigated in compartment air conditioning. The effects of compressor efficiency, expander efficiency, ambient humidity, all-fresh-air supply and ambient pressure on the cycle performance are presented. The effects of compressor arrangement in the high-pressure cycle and the low-pressure cycle are compared. An open-loop high-pressure cycle has a lar

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Necmi, OZDEMIR*. "THERMODYNAMIC ANALYSIS OF RECUPERATED GAS TURBINE COGENERATION CYCLES." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 12 (2017): 636–42. https://doi.org/10.5281/zenodo.1133901.

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Cogeneration cycles have better advantages over the conventional cycles. In this study, the performances of the recuperated cogeneration cycles are analyzed. For the calculation of the enthalpy and the entropy values of the streams, a computer program written by the author in FORTRAN codes is used. Exergy analysis is done for the air-fuel preheated cogeneration cycle. The results present that by changing the compression rate from 6 to 16, the electric power increases about 20-40 %, but the heat power decreases about 10-30 % for the air-fuel preheated cycle. The decrease of the heat power is ab

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Necmi, Ozdemir*. "THERMODYNAMIC ANALYSIS OF GAS TURBINE COGENERATION POWER PLANTS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 9 (2016): 736–42. https://doi.org/10.5281/zenodo.155102.

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Cogeneration cycles have many advantages over the conventional cycles. In this study, the performances of the simple and the air preheated cogeneration cycles are compared with each other. To calculate the enthalpy and entropy values of the streams, a computer program written by the author in FORTRAN codes is used. Exergy analysis is done for the simple and the air preheated cogeneration cycles. The results present that by changing the compression rate from 6 to 16, the electric power increases about 20 %, but the heat power decreases about 11 % for the simple cycle. By changing excess air rat

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6

QIAN, Yiran, Zhuohua ZHANG, Jingwei YI, Weixiong CHEN, Ming LIU, and Junjie YAN. "Thermodynamic optimization of closed air Brayton cycle and air-ORC combined cycle." Proceedings of the International Conference on Power Engineering (ICOPE) 2021.15 (2021): 2021–0184. http://dx.doi.org/10.1299/jsmeicope.2021.15.2021-0184.

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7

Choi, Sungwook, In Woo Son, and Jeong Ik Lee. "Comparative Performance Evaluation of Gas Brayton Cycle for Micro–Nuclear Reactors." Energies 16, no. 4 (2023): 2065. http://dx.doi.org/10.3390/en16042065.

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Gas Brayton cycles have been considered the next promising power cycles for microreactors. Especially the open-air and closed supercritical CO2 (S-CO2) Brayton cycles have received attention due to their high thermal efficiency and compact component sizes when compared to the steam Rankine cycle. In this research, the performances of the open-air and closed S-CO2 Brayton cycle at microreactor power range are compared with polytropic turbomachinery efficiency. When optimizing the cycle, three different optimization parameters are considered in this paper: maximum efficiency, maximum cycle speci

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8

Gao, Zhaozhao, Zhikang Wang, Yihong Li, et al. "Thermodynamic analysis of liquid air energy storage systems based on different liquefaction cycles." IOP Conference Series: Materials Science and Engineering 1327, no. 1 (2025): 012087. https://doi.org/10.1088/1757-899x/1327/1/012087.

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Abstract Liquid air energy storage (LAES) is a large-scale, long-duration energy storage technology that stores electricity in the form of liquid air. Air liquefaction is the core process of a LAES system, determining the conversion rate between electricity and liquid air, and affecting the system efficiency. Research on the LAES systems typically revolves around a single liquefaction cycle, such as the Linde-Hampson cycle, and thermodynamic comparisons of LAES based on different liquefaction cycles still need to be further investigated. The LAES systems based on the Linde-Hampson throttling l

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9

HIRAKOSO, Hiroyuki, Takahiro SUZUKI, and Atsutaro WATANABE. "Liquefied air cycle engine LACE." Journal of the Japan Society for Aeronautical and Space Sciences 36, no. 410 (1988): 111–18. http://dx.doi.org/10.2322/jjsass1969.36.111.

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10

Yao, Jia Wei, Yu Pu Song, and Ling Xia Gao. "Experimental and Theoretical Study of Air-Entraining Concrete under Biaxial Compression after Freezing-Thawing Cycle." Advanced Materials Research 243-249 (May 2011): 214–17. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.214.

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Mechanical properties experiments of air-entraining concrete after suffered to 0, 100, 200, 300 and 400 freezing-thawing cycles were performed. The experiment method, contents and result of strength and deformation of air-entraining after freezing-thawing cycle under biaxial compression were also introduced. The relationship between the strain corresponding to peak stress and cycle of freezing-thawing as well as the relationship between compressive strength and cycle of freezing-thawing were analyzed. The failure criterion of air-entraining concrete under biaxial compression was established.

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11

Kong, Debing, Guicai Ning, Shigong Wang, et al. "Clustering diurnal cycles of day-to-day temperature change to understand their impacts on air quality forecasting in mountain-basin areas." Atmospheric Chemistry and Physics 21, no. 19 (2021): 14493–505. http://dx.doi.org/10.5194/acp-21-14493-2021.

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Abstract. Air pollution is substantially modulated by meteorological conditions, and especially their diurnal variations may play a key role in air quality evolution. However, the behaviors of temperature diurnal cycles along with the associated atmospheric condition and their effects on air quality in China remain poorly understood. Here, for the first time, we examine the diurnal cycles of day-to-day temperature change and reveal their impacts on winter air quality forecasting in mountain-basin areas. Three different diurnal cycles of the preceding day-to-day temperature change are identifie

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12

Ishihara, T., L. M. Guo, T. Miyano, Y. Inoishi, K. Kaneko, and S. Ida. "Mesoporous La0.6Ca0.4CoO3 perovskites with large surface areas as stable air electrodes for rechargeable Zn–air batteries." Journal of Materials Chemistry A 6, no. 17 (2018): 7686–92. http://dx.doi.org/10.1039/c8ta00426a.

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13

Kosowski, Krzysztof, Karol Tucki, Marian Piwowarski, et al. "Thermodynamic Cycle Concepts for High-Efficiency Power Plans. Part A: Public Power Plants 60+." Sustainability 11, no. 2 (2019): 554. http://dx.doi.org/10.3390/su11020554.

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An analysis was carried out for different thermodynamic cycles of power plants with air turbines. Variants with regeneration and different cogeneration systems were considered. In the paper, we propose a new modification of a gas turbine cycle with the combustion chamber at the turbine outlet. A special air by-pass system of the combustor was applied and, in this way, the efficiency of the turbine cycle was increased by a few points. The proposed cycle equipped with a regenerator can provide higher efficiency than a classical gas turbine cycle with a regenerator. The best arrangements of combi

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14

Kurzyński, Wojciech, Sandra Krzywdzińska, and Dariusz Jurkiewicz. "Nasal cycle." Alergoprofil 19, no. 4 (2023): 7–10. http://dx.doi.org/10.24292/01.ap.194313223.

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The nasal cycle is a physiological phenomenon that may cause a periodic change in the patency of the nasal cavities through changes in congestion and constriction of the nasal mucosa especially in the inferior nasal turbinates. This phenomenon was first described by the German physician Richard Kayser in 1895. The nasal cycle is regulated by the hypothalamus via the sympathetic nervous system. Air flow through the nasal cavities is influenced by different factors such as hyperventilation, changes in body position, air temperature, nasal diseases, infection, allergy and vasomotor rhinitis, as w

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15

Soumya, Ranjan Behera. "Studies on performance and optimization analysis in Otto cycle- A Review." Journal of Advanced Mechanical Sciences 1, no. 2 (2022): 36–40. https://doi.org/10.5281/zenodo.7047294.

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Air standard Otto cycle is an ideal thermodynamic cycle employed in spark ignition engines. Since some assumptions are made, it deviates from the real air fuel cycles. There have been lots of researches and studies to help advance the Otto cycle and enhance its performance by considering different parameters. Here we try to discuss and give an overview related to the effects of several parameters like variable specific heat, heat loss from cylinder walls, regeneration with polytropic expansion, etc. on the working of an Otto cycle. In addition, a summary is provided in accordance to the perfor

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16

Wyczalek, Floyd A., та Chung M. Suh. "AirСar CAES-Compressed Air Energy Source-Compendium". Advanced Materials Research 430-432 (січень 2012): 189–96. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.189.

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This paper is a re evaluation of CAES Compressed Air Energy Source. CAES is not new, experimental air car compressed air propulsion vehicles appeared in early 1900’s, and are currently exemplified by the India Tata Motors AirCar MiniCat based on the French MDI Motor Development International AirCar. (see Ulf Bossel, European Fuel Cell Forum) This study focuses on compressed air potential pressure specific energy density and specific power, ideal Global thermodynamic cycle efficiency, US EPA 23 cycle urban driving test schedule overall drive train ideal efficiency and vehicle ideal range. CAES

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17

Soumya, Ranjan Behera. "Studies on performance and optimization analysis in Otto cycle- A Review." Journal of Advanced Mechanical Sciences 1, no. 2 (2022): 36–40. https://doi.org/10.2022/jams.6490825.

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Air standard Otto cycle is an ideal thermodynamic cycle employed in spark ignition engines. Since some assumptions are made, it deviates from the real air fuel cycles. There have been lots of researches and studies to help advance the Otto cycle and enhance its performance by considering different parameters. Here we try to discuss and give an overview related to the effects of several parameters like variable specific heat, heat loss from cylinder walls, regeneration with polytropic expansion, etc. on the working of an Otto cycle. In addition, a summary is provided in accordance to the perfor

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18

Shoul, Hamed, Mehran Ameri, and S. M. Hojjat Mohammadi. "Thermodynamic Investigation of Integrated Air Cycle Refrigeration Systems." International Journal of Air-Conditioning and Refrigeration 25, no. 02 (2017): 1750016. http://dx.doi.org/10.1142/s201013251750016x.

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An analysis of air cycle refrigeration (ACR) systems based on the first and second laws of thermodynamics has been carried out. Cooling the gas cooler outlet enhances the system efficiency, hence the use of integrated refrigeration systems (IRSs). The IRS consists of an ACR, an absorption chiller and a prime mover. The waste heat from the prime mover operates the absorption chiller, which provides additional cooling that is used to cool down the air exiting the gas cooler. LiBr-H2O and NH3-H2O are used as fluid pairs in absorption section. The prime mover can either be gas turbine or solid oxi

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19

Akiba, M., and E. A. Thani. "Thermodynamic Analysis of New Combination of Supercharged Boiler Cycle and Heat Recovery Cycle for Power Generation." Journal of Engineering for Gas Turbines and Power 118, no. 2 (1996): 453–60. http://dx.doi.org/10.1115/1.2816611.

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The aim of this paper is to study the performance of a new combination of supercharged boiler–gas turbine cycle, which is expected to reduce the cooling air in the combustor and heat recovery cycle, from a thermodynamic point of view. Two designs of this cycle were adopted and the influences of various operating parameters, such as compressor pressure ratio, ambient temperature, inlet gas temperature of gas turbine, percentage of excess air, and number of feedwater heaters, were studied. Three techniques were applied to increase the overall cycle efficiency: first, increasing the mean temperat

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20

Kato, Satoshi. "Air Cycle System without Environmental Pollution." Journal of the Society of Mechanical Engineers 102, no. 973 (1999): 736–37. http://dx.doi.org/10.1299/jsmemag.102.973_736.

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21

Palumbo, A., and A. Mazzarella. "Solar cycle in surface air temperature." Il Nuovo Cimento C 9, no. 3 (1986): 725–28. http://dx.doi.org/10.1007/bf02508400.

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22

HAMAMOTO, Yoshinori, Isao NIKAI, Sousuke MURASE, Atsushi AKISAWA, and Takao KASHIWAGI. "Analysis of Air Cycle Refrigerator Driven Desiccant Air Conditioning System." Proceedings of Conference of Kanto Branch 2002.8 (2002): 133–34. http://dx.doi.org/10.1299/jsmekanto.2002.8.133.

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23

Marques, Hugo, Mónica Oliveira, and Nelson Martins. "Innovative polymeric air–air heat recovery system — Life cycle assessment." Energy Reports 6 (February 2020): 429–35. http://dx.doi.org/10.1016/j.egyr.2019.08.084.

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24

Alizadeh, S. M., Arezoo Ghazanfari, M. A. Ehyaei, et al. "Investigation the Integration of Heliostat Solar Receiver to Gas and Combined Cycles by Energy, Exergy, and Economic Point of Views." Applied Sciences 10, no. 15 (2020): 5307. http://dx.doi.org/10.3390/app10155307.

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Due to the high amount of natural gas resources in Iran, the gas cycle as one of the main important power production system is used to produce electricity. The gas cycle has some disadvantages such as power consumption of air compressors, which is a major part of gas turbine electrical production and a considerable reduction in electrical power production by increasing the environment temperature due to a reduction in air density and constant volumetric airflow through a gas cycle. To overcome these weaknesses, several methods are applied such as cooling the inlet air of the system by differen

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25

Gibson, Gillian, and Alex G. Stewart. "Unnatural Cycles: Anthropogenic Disruption to Health and Planetary Functions." Geosciences 12, no. 3 (2022): 137. http://dx.doi.org/10.3390/geosciences12030137.

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Natural cycles underpin the very stuff of life. In this commentary we consider unnatural cycles: that is, anthropogenic activities which have a circularity, but whose nature is to have a detrimental effect on human health, exacerbating existing problems. Natural cycles have feedback loops, some of which have recently come to light, with an understanding that everything is connected in some way. In health, feedback loops are imperative in homeostatic mechanisms. However, in the unnatural cycle the feedback loops serve to reinforce (and in some cases amplify) negative problems. We offer a commen

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26

Jericha, H., and F. Hoeller. "Combined Cycle Enhancement." Journal of Engineering for Gas Turbines and Power 113, no. 2 (1991): 198–202. http://dx.doi.org/10.1115/1.2906545.

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The Combined Cycle Plant (CCP) offers the best solutions to curb air pollution and the greenhouse effect, and it represents today the most effective heat engine ever created. At Graz University of Technology work is being conducted in close cooperation with industry to further enhancement of CC systems with regard to raising output and efficiency. Feasibility studies for intake air climatization, overload and part-load control, introduction of aeroderivate gas turbines in conjunction with high-temperature steam cycles, proposals for cooling, and the use of hydrogen as fuel are presented.

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27

Sun, Enhui, Han Hu, Hangning Li, Chao Liu, and Jinliang Xu. "How to Construct a Combined S-CO2 Cycle for Coal Fired Power Plant?" Entropy 21, no. 1 (2018): 19. http://dx.doi.org/10.3390/e21010019.

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It is difficult to recover the residual heat from flue gas when supercritical carbon dioxide (S-CO2) cycle is used for a coal fired power plant, due to the higher CO2 temperature in tail flue and the limited air temperature in air preheater. The combined cycle is helpful for residual heat recovery. Thus, it is important to build an efficient bottom cycle. In this paper, we proposed a novel exergy destruction control strategy during residual heat recovery to equal and minimize the exergy destruction for different bottom cycles. Five bottom cycles are analyzed to identify their differences in th

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28

Necmi, Ozdemir*. "AMBIENT CONDITIONS EFFECTS ON PERFORMANCE OF GAS TURBINE COGENERATION POWER PLANTS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 12 (2016): 633–38. https://doi.org/10.5281/zenodo.212013.

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In this study, the performances of a simple and an air preheated cogeneration cycles in ambient conditions are compared with each other. A computer program written by the author in FORTRAN codes is used for the calculation of the enthalpy and entropy values of the streams, Exergy analysis is done and compared for the simple and the air preheated cogeneration cycles for different ambient conditions. The two cogeneration cycles are evaluated in terms of heat powers and electric, electrical to heat ratio, heat exergy, and exergetic efficiency with respect to humidity, temperature, and atmospheric

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29

Karaali, Rabi, and Arzu Keven. "Evaluation of four different cogeneration cycles by using some criteria." Applied Rheology 32, no. 1 (2022): 122–37. http://dx.doi.org/10.1515/arh-2022-0128.

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Abstract The purpose of this article is to evaluate four different gas turbine cogeneration cycles which are basic, absorption cooling, air heating and air fuel heating cogeneration cycles by using the most important six evaluation criteria for different excess air coefficient, different compression rates, and different compressor inlet air temperatures. These six evaluation criteria are electrical heat ratio, exergy efficiency, incremental heat rate, artificial thermal efficiency, fuel energy saving ratio, and specific fuel consumption. It is seen that the air-fuel heating cogeneration cycle

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30

Umi, Faridatul, and Taufina Taufina. "PENGGUNAAN PENDEKATAN CTL UNTUK MENINGKATAN HASIL BELAJAR MATEMATIKA DI KELAS V SD." SCHOOL EDUCATION JOURNAL PGSD FIP UNIMED 10, no. 1 (2020): 91. http://dx.doi.org/10.24114/sejpgsd.v10i1.18557.

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This study aims to improve mathematics learning outcomes of fifth grade elementary school 05 Air Tawar Barat with a Contextual Teaching And Learning approach. This research is a classroom action research consisting of II cycles with research subjects of fifth grade students The results of the study occurred an increase in each variable in each cycle, where: a) planning the first cycle of 82.14 increased in the second cycle 92.85, b) the implementation of aspects of the first cycle teacher 80.35 increased in the second cycle 92.85, c) the implementation of aspects of the first cycle students 71

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Oleh, Stupak, Khalatov Artem, Donyk Tetiana, and Shikhabutinova Oksana. "A STUDY OF NEW LOCAL HEATING AND AIR CONDITIONING SCHEMES BASED ON THE MAISOTSENKO CYCLE." Eastern-European Journal of Enterprise Technologies 3, no. 8 (105) (2020): 6–14. https://doi.org/10.15587/1729-4061.2020.205047.

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Significant consumption of energy resources in the production of heat in the winter season and air conditioning in the summer season is the main problem of municipal heat-and-power engineering. Therefore, local energy-efficient heating systems and climatic heating and cooling systems based on renewable energy sources are becoming increasingly important. The heat pumps, based on the Rankine cycle, which use the energy of atmospheric air, soil, and wastewater, as well as air conditioning systems, based on the Maisotsenko cycle, using the psychrometric energy of the environment, have become wides

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32

Peters, L., D. Sackinger, and C. Shade. "(114) Simple documentation of comprehensive pain assessment, intervention and reassessment (AIR): improvement cycle applied to AIR cycle." Journal of Pain 16, no. 4 (2015): S4. http://dx.doi.org/10.1016/j.jpain.2015.01.028.

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33

Augustyn, Emil, and Adam Kadziński. "Models of Airmen’s Aviation Activities Cycles in the Tactical Aircraft’s Operating System." Journal of KONBiN 45, no. 1 (2018): 45–66. http://dx.doi.org/10.2478/jok-2018-0003.

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Abstract The tactical aircraft’s operating system (system of a tactical aircraft’s operational usage) constitutes the main research area of this paper. The authors consider and look into the airmen’s aviation activities cycles which could be the basis for a clear and coherent indication and description of analyses domains for risk management’s processes in the tactical aircraft’s operating systems (TAOS). The first part of this paper presents the model of airman’s aviation activities cycle (AAAC) which indicates individual airman-aircraft relations during the realization an aircraft’s operator

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34

Takahashi, Satoru, Masaki Hatano, Yoshitaka Kojima, Yoshio Harada, Akira Kawasaki, and Fumio Ono. "Thermal Cycle Properties of Plasma Sprayed Oxidation-Resistant Metallic Coatings." Materials Science Forum 696 (September 2011): 296–301. http://dx.doi.org/10.4028/www.scientific.net/msf.696.296.

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Thermal cycle resistance of Ni-20Cr, Ni-50Cr and CoNiCrAlY coatings produced by air plasma spraying was investigated according to Japanese Industrial Standard Testing method for thermal cycle resistance of oxidation resistant metallic coatings (JIS H 8452: 2008). The specimens were exposed to a cyclic heating and cooling regimen comprised of up to 100 cycles of 10 hours heating to 1000 °C or 1093 °C in air followed by cooling. The thermal cycle resistance of oxidation-resistant metallic coatings was found to depend strongly on testing temperature and on the chemical composition of the coating

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Xiong, Yong Qiang, Peng Luo, and Ben Hua. "Energy Consumption Analysis of Air Separation Process for Oxy-Fuel Combustion System." Advanced Materials Research 1033-1034 (October 2014): 146–50. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.146.

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Oxy-fuel combustion is a leading potential technology to capture CO2. Because the oxygen production process is causing the largest power penalty in oxy-fuel combustion system, it is essential to cut down oxygen separation power penalty for capturing CO2 at low cost. This paper presents the energy consumption analysis results of air separation units with three different cycles offering for oxy-fuel combustion systems. The study shows that when the gaseous oxygen compression (GOXC) cycle is selected for pressuring oxygen product stream, the specific consumption of high pressure and low purity ox

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36

Caliskan, Hakan, Arif Hepbasli, Ibrahim Dincer, and Valeriy Maisotsenko. "Thermodynamic performance assessment of a novel air cooling cycle: Maisotsenko cycle." International Journal of Refrigeration 34, no. 4 (2011): 980–90. http://dx.doi.org/10.1016/j.ijrefrig.2011.02.001.

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Shanty, Anna Diana. "Penerapan metode eksperimen mencampur warna dengan media cat air di TK Aisyiyah Pekalongan." Action Research Journal 1, no. 1 (2021): 13–18. http://dx.doi.org/10.51651/arj.v1i1.69.

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Activities that involve students directly are very meaningful, especially activities that can develop children's talents and interests. The background of this research is that there are still many children who do not know how to mix colors. In this case the method with experiments and media with watercolors. The research method used is Classroom Action Research (CAR) with two cycles. In each cycle consists of: planning, implementation, observation and reflection. The subjects of this study were the children of the B3 group of TK Aisyiyah Pekalongan, totaling 16 children. The results of the res

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38

El-Masri, M. A. "Exergy Analysis of Combined Cycles: Part 1—Air-Cooled Brayton-Cycle Gas Turbines." Journal of Engineering for Gas Turbines and Power 109, no. 2 (1987): 228–36. http://dx.doi.org/10.1115/1.3240029.

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Quantitative analytical tools based on the second law of thermodynamics provide insight into the complex optimization tradeoffs encountered in the design of a combined cycle. These tools are especially valuable when considering approaches beyond the existing body of experience, whether in cycle configuration or in gas turbine cooling technology. A framework for such analysis was provided by the author [1-3] using simplified, constant-property models. In this paper, this theme is developed to include actual chemical and thermodynamic properties as well as relevant practical design details refle

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Ковальський, В. П., and Г. Мінцзюнь. "Effect of deicing salt on air voids and permeability coefficient of asphalt mixture under dry-wet cycle." Сучасні технології та методи розрахунків у будівництві, no. 20 (January 16, 2024): 63–71. http://dx.doi.org/10.36910/6775-2410-6208-2023-10(20)-07.

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Although the extensive use of deicing salt has solved the problem of road icing in winter and reduced traffic accidents, it has also had a significant impact on the asphalt mixture. Through dry-wet cycle test, this study investigated the change rule of air voids and permeability coefficient of asphalt mixture under the conditions of different gradation, different deicing salt solutions and different dry-wet cycle times, and analyzed the significant indicators of each factor's impact on air voids and permeability coefficient based on variance analysis. The results showed that the air voids and

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HAMAMOTO, Yoshinori, Isao NIKAI, Sousuke MURASE, Atsushi AKISAWA, and Takao KASHIWAGI. "Characteristics Evaluation of Air Cycle Refrigerator Driven Desiccant Air Conditioning System." Proceedings of the Symposium on Environmental Engineering 2002.12 (2002): 525–28. http://dx.doi.org/10.1299/jsmeenv.2002.12.525.

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Wang, Lie, Jian Pan, Ye Zhang, Xunliang Cheng, Lianmei Liu, and Huisheng Peng. "A Li–Air Battery with Ultralong Cycle Life in Ambient Air." Advanced Materials 30, no. 3 (2017): 1704378. http://dx.doi.org/10.1002/adma.201704378.

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Wang, Shugang, Shuangshuang Li, Shuang Jiang, and Xiaozhou Wu. "Analysis of the Air-Reversed Brayton Heat Pump with Different Layouts of Turbochargers for Space Heating." Buildings 12, no. 7 (2022): 870. http://dx.doi.org/10.3390/buildings12070870.

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The air-reversed Brayton cycle produces charming, environmentally friendly effects by using air as its refrigerant and has potential energy efficiency in applications related to space heating and building heating. However, there exist several types of cycle that need to be discussed. In this paper, six types of air-reversed Brayton heat pump with a turbocharger, applicable under different heating conditions, are developed. The expressions of the heating coefficient of performance (COP) and the corresponding turbine pressure ratio are derived based on thermodynamic analysis. By using these expr

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Umyshev, Dias, Eduard Osipov, Andrey Kibarin, Maxim Korobkov, and Yuriy Petukhov. "Analysis of Liquid Air Energy Storage System with Organic Rankine Cycle and Heat Regeneration System." Sustainability 16, no. 13 (2024): 5434. http://dx.doi.org/10.3390/su16135434.

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Liquid air energy storage (LAES) is one of the most promising technologies for power generation and storage, enabling power generation during peak hours. This article presents the results of a study of a new type of LAES, taking into account thermal and electrical loads. The following three variants of the scheme are being considered: with single-stage air compression and the use of compression heat for regasification (Case 1); with single-stage compression and the organic Rankine cycle (Case 2); and with three-stage air compression/expansion and the organic Rankine cycle (Case 3). To analyze

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Chiesa, P., G. Lozza, E. Macchi, and S. Consonni. "An Assessment of the Thermodynamic Performance of Mixed Gas–Steam Cycles: Part B—Water-Injected and HAT Cycles." Journal of Engineering for Gas Turbines and Power 117, no. 3 (1995): 499–508. http://dx.doi.org/10.1115/1.2814123.

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Part B of this paper focuses on intercooled recuperated cycles where water is injected to improve both efficiency and power output. This concept is investigated for two basic cycle configurations: a Recuperated Water Injected (RWI) cycle, where water is simply injected downstream of the HP compressor, and a Humid Air Turbine (HAT) cycle, where air/water mixing is accomplished in a countercurrent heat/mass transfer column called “saturator,” For both configurations we discuss the selection and the optimization of the main cycle parameters, and track the variations of efficiency and specific wor

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Kumar, Sachin. "Performance Optimization of Combined Cycle Power Plant Considering Various Operating Parameters." Journal of Mechanical Engineering 18, no. 1 (2021): 21–38. http://dx.doi.org/10.24191/jmeche.v18i1.15161.

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Combined cycle power plants are popular in the thermal engineering field for their higher efficiency as compared to normal cycles such as Rankine and Brayton Cycle. But main disadvantages of the cycle are waste heat rejection and low work output. To overcome these difficulties a heat recovery system is used in the present work to recover waste heat of the Brayton cycle as a steam generator for the Rankine cycle in a combined Gas-Vapor cycle. In the present work, the effect of factors such as “compression ratio”, “inlet air temperature” and “turbine inlet temperature” on cycle efficiency was ca

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Guangya, Zhu, T. T. Chow, K. F. Fong, and C. K. Lee. "Investigation on humidified gas turbine cycles with Maisotsenko-cycle-based air saturator." Energy Procedia 158 (February 2019): 5195–200. http://dx.doi.org/10.1016/j.egypro.2019.01.676.

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Eka Oktaviani, Rise, Endang Sri Maruti, and Noria Rahmayanti. "PENINGKATAN HASIL BELAJAR IPA MATERI SIKLUS AIR DENGAN MODEL PEMBELAJARAN PICTURE AND PICTURE." Pendas : Jurnal Ilmiah Pendidikan Dasar 8, no. 1 (2023): 1773–79. http://dx.doi.org/10.23969/jp.v8i1.8099.

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Classroom Action Research (CAR) was motivated by the results of science learning on the water cycle material for class V students at SDN 1 Karanglolor which had not yet reached the minimum completeness criteria (KKM). This study aims to improve learning outcomes in Natural Sciences on the water cycle material using the picture and picture model for fifth grade students at SDN 1 Karanglolor, Ponorogo Regency, in the 2022/2023 academic year. Researchers carried out PTK in two cycles and each cycle was carried out in one meeting. The results of the pre-action research that had 18% classical compl

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Chen, Li Jun, Li Jun Mi, Chao Xu, and Shan Rang Yang. "Economic Analysis on the Combined Power/ Refrigerating Cycle for Power Plant Air Cooling System." Advanced Materials Research 433-440 (January 2012): 7436–42. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.7436.

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At present, the development of power industry is facing the pressure of energy saving and emission reduction. This paper reviewed briefly the strategy for development in optimizing power cycle and improving comprehensive utilization of heat energy. A economic analysis was made to the combined power cycle/refrigerating cycle air cooling system (hereinafter called ‘combined cycle air cooling system’ or ‘CCACS’) which presented previously and estimated its contribution to energy saving and emission reduction in this paper. An analog computation example shows that the combined cycle air cooling sy

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TOGASHI, Kai, Atsushi TSUJIMORI, and Reiwa SUZUKI. "Absorption Refrigeration Cycle for Automotive Air Conditioning." Proceedings of the International Conference on Power Engineering (ICOPE) 2021.15 (2021): 2021–0126. http://dx.doi.org/10.1299/jsmeicope.2021.15.2021-0126.

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NIKAI, Isao. "618 High Performance Air Cycle Refrigeration System." Proceedings of Conference of Kanto Branch 2001.7 (2001): 209–10. http://dx.doi.org/10.1299/jsmekanto.2001.7.209.

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