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Relevant bibliographies by topics / Centrifugal chillers

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Journal articles

Academic literature on the topic 'Centrifugal chillers'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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Journal articles on the topic "Centrifugal chillers"

1

SATHTHASIVAM, JAYAPRAKASH, GARY TANG, and KIM CHOON NG. "EVALUATION OF THE SIMPLE THERMODYNAMIC MODEL (GORDON AND NG UNIVERSAL CHILLER MODEL) AS A FAULT DETECTION AND DIAGNOSIS TOOL FOR ON-SITE CENTRIFUGAL CHILLERS." International Journal of Air-Conditioning and Refrigeration 18, no. 01 (2010): 55–60. http://dx.doi.org/10.1142/s2010132510000071.

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The application of Fault Detection and Diagnosis (FDD) could play a key role in operating chillers at optimum efficiency. As air-conditioning consumes a significant proportion (approximately 30% to 50%) of the total power consumption of a commercial building, an effective FDD tool is very much required for a reliable and economic chiller operation. In this paper, the renowned Simple Thermodynamic Model, STM (also known as Gordon and Ng Universal Chiller Model) was utilized to detect and diagnose some of the common faults in centrifugal chillers. Based on the readily available, nonintrusive, st

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2

Cappenberg, Audri Deacy. "Analisis Chiller Dengan Menggunaan R123 Dan R134a Pada Kinerja Pendinginan." JURNAL KAJIAN TEKNIK MESIN 5, no. 1 (2020): 48–57. http://dx.doi.org/10.52447/jktm.v5i1.3979.

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AbstrakChiller adalah mesin refrigerasi yang memiliki fungsi utama mendinginkan air pada sisi evaporator, air yang didinginkan selanjutnya didistribusi ke alat penukar kalor (FCU; fan coil unit). Chiller sudah menjadi pilihan dalam pengkondisian udara ruangan dalam skala besar maupun dalam mesin-mesin proses. Penelitian ini bertujuan untuk mengetahui kinerja pendingin chiller centrifugal water cooled (dari beberapa jenis chiller yang tersedia) yang berkapasitas relatif besar, dengan menggunakan refrigeran R-123 dan R-134a sebagai media pendingin. Dari hasil penelitian dan pengolahan data maka

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3

Liu, Yuan, Qi Wang, and Pu Song. "Energy Saving Potential on Centrifugal Water Chillers with Frequency Converter System: A Case Study in China." Advanced Materials Research 1070-1072 (December 2014): 427–30. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.427.

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In order to evaluate the energy saving potential during centrifugal water chillers’ operation, centrifugal water chillers from an industrial enterprise in China are investigated. Based on the actual operation data gained from 3 different water chillers, their working performances and the energy consumption situations are reported and researched in this paper. Meanwhile, the energy saving potential and economic performance of the chillers are also reported and analyzed, when the appropriate variable frequency systems are introduced.

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4

Ng, K. C., T. Y. Bong, and H. T. Chua. "Performance Evaluation of Centrifugal Chillers in an Air-Conditioning Plant with The Building Automation System (BAS)." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 208, no. 4 (1994): 249–55. http://dx.doi.org/10.1243/pime_proc_1994_208_045_02.

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A thermodynamic model with a novel method of describing the performances of centrifugal chillers for air-conditioning is presented. It is based on the first and second laws of thermodynamics which captures the overall entropy change due to non-isentropic compression and expansion of the thermodynamic cycle. The model gives the fundamental relation between the coefficient of performance (COP) and the cooling rates (Qe) for (a) the modulating and (b) the throttling actions of the inlet guide-vanes of the compressor. The usefulness and the accuracy of the model are demonstrated here by analysing

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5

Hsu, Chih-Neng, and Shih-Hao Wang. "Evaluating the Performance of Water Chillers Equipped with Constant- or Variable-Frequency Centrifugal Compressors." Processes 9, no. 6 (2021): 1039. http://dx.doi.org/10.3390/pr9061039.

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The cooling coefficient of performance (COPR) and energy efficiency ratio (EER) of refrigerant R-134a compressors (single- and double-compressors) with different refrigerant tonnage (200, 250, 300, 380, 500, and 700 RT) for centrifugal and Maglev centrifugal compressors change with different operating performance load percentages (10–100%), and constant-frequency and variable-frequency operation, resulting in performance differences. In particular, a water chiller can have a fixed cooling water inlet temperature of 32 °C and a variable cooling water inlet temperature between 18.33 °C and 32 °C

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6

Wang, Zhiyi, Jiachen Zhong, and Zudong Pan. "Research of cooling load & chiller selection in metro station." International Journal of Low-Carbon Technologies 15, no. 4 (2020): 506–12. http://dx.doi.org/10.1093/ijlct/ctaa015.

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Abstract Air conditioning is of the most energy saving potential system in the metro station. This study analyzes the composition and characteristics of air conditioning cooling load in a metro station. The hourly distribution and the proportion of each cooling load are calculated. The results show that cooling load fluctuation of metro air conditioning is large, and the operating time of different load varies greatly. According to the air conditioning cooling load, the coefficient of performance of the fixed frequency screw, variable frequency screw, series countercurrent screw and magnetic b

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7

Browne, M. W., and P. K. Bansal. "Steady-state model of centrifugal liquid chillers." International Journal of Refrigeration 21, no. 5 (1998): 343–58. http://dx.doi.org/10.1016/s0140-7007(98)00003-6.

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8

Kumar, Manoj. "Economic Evaluation of Solar Cooling Schemes." International Journal of Energy Optimization and Engineering 6, no. 1 (2017): 23–48. http://dx.doi.org/10.4018/ijeoe.2017010102.

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This paper provides an economic evaluation and comparison of ejector, absorption and vapor compression systems driven either partly or fully by solar energy. Life cycle costing has been used to assess the relative economic ranks of eight solar cooling schemes. It has been shown that the capital cost of solar collectors is the dominant capital cost item in the total inventory of solar cooling plant, which has a strong influence on the system life cycle costs. Lower collector costs are therefore critical in establishing economically viable solar cooling systems. Primary energy analysis has been

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9

Jia, Yongzhong, and T. Agami Reddy. "A Model-Based Feed-Forward Controller Scheme for Accurate Chilled Water Temperature Control of Inlet Guide Vane Centrifugal Chillers." Journal of Solar Energy Engineering 127, no. 1 (2005): 47–52. http://dx.doi.org/10.1115/1.1775225.

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Capacity control in most commercial centrifugal chillers is achieved by inlet guide vanes which are activated by the leaving chilled water temperature sensor. Due to mechanical reasons, vane control is done discretely, and not continuously. The control module compares the value provided by the temperature sensor to pre-set control band values, and if those bands are exceeded, it sends a signal to the vane control motor to adjust the vane position by one step which could be upwards or downwards. The advantage of this type of discrete control method is its simplicity. Normally, the accuracy in t

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10

Jia, Yongzhong, and T. Agami Reddy. "Characteristic Physical Parameter Approach to Modeling Chillers Suitable for Fault Detection, Diagnosis, and Evaluation." Journal of Solar Energy Engineering 125, no. 3 (2003): 258–65. http://dx.doi.org/10.1115/1.1567317.

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Model-based fault detection and diagnosis approaches based on statistical models for fault-free performance concurrently require a fault classifier database for diagnosis. On the other hand, a model with physical parameters would directly provide such diagnostic ability. In this paper, we propose a generic model development approach, called the characteristic parameter approach, which is suitable for large engineering systems that usually come equipped with numerous sensors. Such an approach is applied to large centrifugal chillers, which are generally the single most expensive piece of equipm

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