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Journal articles on the topic 'Evaporative-condensing system'

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1

Sulin, A. B., D. V. Evdulov, A. M. Ibragimova, and A. I. Semilyak. "Model of an electronic equipment cooling system based on the joint use of high-current thermoelectric semiconductor batteries and a thermal thermosipho." Herald of Dagestan State Technical University. Technical Sciences 47, no. 4 (2021): 81–91. http://dx.doi.org/10.21822/2073-6185-2020-47-4-81-91.

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Objective. The objective of the study is to develop a design model of the electronic equipment cooling system based on the combined use of high-current thermoelectric semiconductor batteries of layered design and an evaporative-condensing thermal thermosyphon, as well as to study the thermophysical processes occurring during its operation.Methods. A mathematical model of the electronic equipment cooling system based on the combined use of high-current layered thermoelectric batteries and an evaporative-condensing thermal thermosyphon is presented. The design model includes a description of hea
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2

Zhao, Shibo, Yonghui Zhang, Yunqi Nie, Pengyu Qu, and Wenqiang Sun. "Performance of an internet data center refrigeration system using an evaporative cooler." E3S Web of Conferences 194 (2020): 01027. http://dx.doi.org/10.1051/e3sconf/202019401027.

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The traditional refrigeration method of internet data center (IDC) is mostly air refrigeration, which has undesired cooling effect and high power consumption. This study addresses this problem and proposes an evaporative air cooler (EAC) suitable for IDC. Given the high specific heat capacity of water, the evaporative condensing coil and spray device are added to the evaporative cooler to enhance the heat transfer effect. Heat and mass transfer mathematical models are established to analyze the heat transfer performance. The mathematical model is used to simulate the profile of the heat and ma
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3

Azridjal Aziz, Muhammad Rif’at Syahnan, Afdhal Kurniawan Mainil, and Rahmat Iman Mainil. "Experimental Investigation of a Split Air Conditioning Using Condensate as Direct Evaporative Cooling." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 86, no. 1 (2021): 140–53. http://dx.doi.org/10.37934/arfmts.86.1.140153.

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Split air conditioning systems produce reasonable amount of condensate which is usually not utilized and thrown away to the environment. On the other hand, it consumes a lot of energy during operation. The aim of this study is to investigate the improvement of air conditioning systems performance utilizing condensate. A direct evaporative cooling using condensate is incorporated on a 0.74 ton-cooling capacity of split air conditioning to decrease the air temperature before entering the condenser. Performances of the split air conditioning with and without direct evaporative cooling are compare
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4

Khalsa, Kawal Preet Singh, and Sayan Sadhu. "Experimental Study of Domestic Refrigerator Performance Improvement with Evaporative Condenser." International Journal of Air-Conditioning and Refrigeration 29, no. 02 (2021): 2150015. http://dx.doi.org/10.1142/s2010132521500152.

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Evaporation of defrosted water in household refrigerators and condenser waste heat utilization has been reported by many researchers but limited literature is available on the study of evaporative cooling in domestic refrigerators (condenser waste heat utilization for defrost water evaporation) with helical coil heat exchangers. This paper is concerned with evaluating domestic refrigerator performance by employing an evaporative helical coil heat exchanger before hot wall condenser which is utilized for evaporation of defrost water and reducing the superheated refrigerant temperature to conden
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5

Santos, Alexandre F., Pedro D. Gaspar, and Heraldo J. L. de Souza. "New HVAC Sustainability Index—TWI (Total Water Impact)." Energies 13, no. 7 (2020): 1590. http://dx.doi.org/10.3390/en13071590.

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Sales of air conditioning are growing rapidly in buildings, more than tripling between 1990 and 2016. This energy use for air conditioning comes from a combination of rising temperatures, rising population and economic growth. Energy demand for climate control will triple by 2050, consuming more energy than that currently consumed altogether by the United States, the European Union and Japan. This increase in energy will directly impact water consumption, either to directly cool a condenser of an equipment or to serve indirectly as a basis for energy sources such as hydroelectric power that fe
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6

Lakovic, Mirjana, Slobodan Lakovic, and Milos Banjac. "Analysis of the evaporative towers cooling system of a coal-fired power plant." Thermal Science 16, suppl. 2 (2012): 375–85. http://dx.doi.org/10.2298/tsci120426176l.

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The paper presents a theoretical analysis of the cooling system of a 110 MW coal-fired power plant located in central Serbia, where eight evaporative towers cool down the plant. An updated research on the evaporative tower cooling system has been carried out to show the theoretical analysis of the tower heat and mass balance, taking into account the sensible and latent heat exchanged during the processes which occur inside these towers. Power plants which are using wet cooling towers for cooling condenser cooling water have higher design temperature of cooling water, thus the designed condensi
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7

Khanna, R. K., R. S. Rathore, and C. Sharma. "Study of Solar Desalination System with Evaporative Porous Surface in Basin to Meet out Drinking Water Requirement of Remote Area Dwellers of Rajasthan." Asian Journal of Water, Environment and Pollution 6, no. 2 (2009): 67–72. http://dx.doi.org/10.3233/ajw-2009-6_2_08.

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Desalination is a technique used to produce potable water from water sources containing dissolved chemicals contamination. Water with TDS value (mg/L) less than 1000 is called potable and water with TDS value (mg/L) >1000 is called brackish water. There are several methods of water desalination like ion exchange, electro dialysis, reverse osmosis, distillation, solar desalination etc. Solar desalination is a process in which solar energy is used to evaporate brackish water in an air-tight chamber and allowed to condense on a condensing surface, leaving behind the dissolved impurities to mak
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8

Болога, М.К., Ф.П. Гросу, И.В. Кожевников, А.А. Поликарпов та О.В. Моторин. "Теплоотдача испарительно-конденсационной системы при электрогидро-динамической циркуляции теплоносителя и различной пространственной ориентации". Elektronnaya Obrabotka Materialov 53, № 1 (2017): 23–30. https://doi.org/10.5281/zenodo.1048824.

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Рассмотрено влияние пространственной ориентации испарительно-конденсационной системы (ИКС) на коэффициент теплоотдачи, который, как выяснилось, зависит от угла поворота системы по закону, близкому к косинусоиде. Установлено, что при верхнем расположении нагревателя теплоотдача минимальна, а при нижнем – максимальна, что соответствует физическим соображениям о роли архимедовых сил в процессе теплопереноса. Найдена средняя скорость циркуляции теплоносителя по контуру ИКС и оценены «электрическое» число Рейнольдса и коэффициент теплоотдачи как функция этого числа. Обсуждается вопрос о влиянии дав
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9

Dang, Thanhtrung, Hoangtuan Nguyen, and Hung-Son Dang. "Thermal Parameters Optimization of the R744/R134a Cascade Refrigeration Cycle Using Taguchi and ANOVA Methods." Processes 13, no. 4 (2025): 1210. https://doi.org/10.3390/pr13041210.

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In recent years, the use of R744 natural refrigerant has become increasingly popular in a wide range of applications from air conditioning to low-temperature refrigeration. This study focuses on optimizing the thermodynamic parameters of the R744/R134a cascade cycle operating under evaporative temperature varying from −23 °C to −29 °C, operating in tropical climates region. The parameters include the evaporating temperature, the condensing temperature, the subcooling temperature, and the superheating temperature in the low temperature cycle, and the evaporating temperature, the subcooling temp
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10

Borshchev, N. O. "Selected design parameters of a thermal management system for a lithium-ion phosphate battery." E3S Web of Conferences 459 (2023): 10001. http://dx.doi.org/10.1051/e3sconf/202345910001.

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In order to provide a theoretical assessment of the thermal regime of the thermal regime system (SOT) of a heat-generating lithium-iron-phosphate battery, a thermal physico–mathematical model of the thermal regime system of this one has been developed, including the use of axial heat pipes, which, due to their high heat transfer capacity, transmit and divert thermal power from the device to a remote radiator - radiator. The thermal physico-mathematical model is constructed by the method of isothermal nodes (the method of concentrated parameters) and includes 4 ordinary differential equations o
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11

Радченко, Николай Иванович, Иван Владимирович Калиниченко, Роман Николаевич Радченко та Юрий Георгиевич Щербак. "УТИЛІЗАЦІЯ ТЕПЛОТИ ПАРИ ТЕПЛОВИКОРИСТОВУЮЧОЮ ХОЛОДИЛЬНОЮ МАШИНОЮ З ТЕПЛОВИМ НАСОСОМ ДЛЯ ОХОЛОДЖЕННЯ ПОВІТРЯ НА ВХОДІ СУДНОВОГО ДИЗЕЛЯ". Aerospace Technic and Technology, № 5 (7 грудня 2017): 73–77. http://dx.doi.org/10.32620/aktt.2017.5.10.

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A distribution of high potential heat of steam, produced by exhaust gas waste heat recovery boiler, in waste heat recovery chiller for cooling of marine diesel engine intake air has been analyzed. A different variants of possible distribution of heat loads upon the generator of high pressure refrigerant vapour in waste heat recovery cooling system on the base of ejector refrigerant chiller as an example were investigated. It was shown that for maximal realization of high potential heat of steam it is necessary to use it for producing a high pressure refrigerant vapour in the evaporative sectio
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12

Leung, Yiu-Kuen, and Ka Wai Eric Cheng. "Carbon Footprint Reduction by Reclaiming Condensed Water." Sustainability 16, no. 9 (2024): 3867. http://dx.doi.org/10.3390/su16093867.

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Everyday activity incurs carbon footprints, which are classified as personal, production, organizational and national, and may be assessed by input–output analysis (IOA), life-cycle assessment (LCA), or the combination of LCA and IOA methods. Notwithstanding international standards, like ISO 14064 and Publicly Available Specification (PAS) released for standardization, carbon footprint results can vary and sometimes lack consistency that due to variations in data sources, crossover boundary definitions, and operational boundaries for indirect emissions. The novelty of this study is the direct
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13

Dang, Thanh-Trung, Hoang Tuan Nguyen, and Thanh Phong Dang. "An Experimental Study omn Evaporative Condenser in Air Conditioning Systems Using R744." Journal of Technical Education Science, no. 78B (August 28, 2023): 60–67. http://dx.doi.org/10.54644/jte.78b.2023.1259.

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Nowadays, the use of refrigerants has low GWP and zero ODP applying refrigeration and air conditioning systems is an important concern. There has been a lot of research taking about refrigeration systems using R744. In this study, we focus on the use of the mix of water and air for an evaporative condenser through an experiment to study the heat transfer efficiency between water and the R744. The results of this study show that it is feasible to use water to cool down R744 to a subcritical state. The data obtained show that the R744 temperature at the outlet condenser gradually decreases with
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14

Pistochini, Theresa E., Perry L. Young, and Mark P. Modera. "Development of Test Protocol for Direct Evaporative Condenser Air Precoolers." Journal of Thermal Science and Engineering Applications 6, no. 2 (2013). http://dx.doi.org/10.1115/1.4025569.

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Evaporative precoolers for air-cooled condensing units have been demonstrated to reduce electricity demand and save energy, particularly in arid climates. However, no objective, standardized test data for these products exists in the United States, making it difficult for end-users and utilities to evaluate expected performance prior to purchase and installation. This paper proposes a test protocol for evaporative precoolers installed on condensing units up to 70 kW, and then executes the protocol using three precooling products designed for residential split system air conditioners. Several m
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15

Fabregat Calixto, Jorge, Manuel Lucas Miralles, Javier Ruiz Ramirez, Pedro Martínez Martínez, Francisco Javier Aguilar Valero, and Alberto Rodríguez Martínez. "ANÁLISIS DEL COMPORTAMIENTO Y OPTIMIZACIÓN DE UN SISTEMA DE AIRE ACONDICIONADO SOLAR CON PRE-ENFRIAMIENTO DEL AIRE DE ENTRADA AL CONDENSADOR MEDIANTE ATOMIZACIÓN POR ULTRASONIDOS." Avances en Ciencias y Técnicas del Frío - 12. Actas del XII Congreso Ibérico y X Congreso Iberoamericano de Ciencias y Técnicas del Frío CYTEF 2024, July 18, 2024. http://dx.doi.org/10.21134/k1w9he29.

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The most directly applicable strategies for improving the performance of air conditioning systems are the use of renewable energy sources and improving their efficiency by lowering their condensing temperature. An emerging area of study is the use of ultrasonic equipment to improve the efficiency of a wide variety of processes, with interesting results in the field of evaporative pre-cooling. The present study aims to analyse and optimise a conventional split-type solar cooling system driven by photovoltaic energy, which has a hybridisation of the condenser using ultrasonic atomisers to improv
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16

Tiwari, G. N., Md Meraj, M. E. Khan, and Md Azhar. "Modified Hottel-Whillier-Bliss Equation for an Active Solar Distillation System for Higher Yield and Thermal Efficiency." Journal of Thermal Science and Engineering Applications 14, no. 2 (2021). http://dx.doi.org/10.1115/1.4051374.

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Abstract Based on energy-balance equations for a photo-voltaic thermal (PVT) active solar distillation system, a modified Hottel-Whillier-Bliss (HWB) analytical characteristic equation as a function of design and climatic parameters has been derived in the present article. It has been found that there is a significant difference between characteristic equations for PVT-based active solar distillation and the conventional flat plate collector (FPC). It is due to (i) opposite nature of loss factor from inside surface to ambient through glass cover and (ii) temperature dependence of the evaporati
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17

Bianca, Eleonora, Francesca Dotti, Ada Ferri, and George Havenith. "Heat and mass transfer in footwear: Exploring the moisture evaporation and condensation cycle." Journal of Industrial Textiles 55 (March 11, 2025). https://doi.org/10.1177/15280837251325783.

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This study investigates the movement of moisture and associated heat loss from the sock to the microclimate and external environment in mountain footwear. As it is not how much sweat is produced, but how much of it can evaporate, a thorough study was carried out to analyse the various contributions to heat exchange in this context. The tests were performed on a thermal manikin with a 100% cotton sock loaded with different amounts of water (0g, 5g, 15g, and 30g) at 10°C and 50% RH. Long-term tests were carried out with the maximum amount of water loaded (30g) to observe the different phases of
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