Comparative study on the energy performance of chiller system in an institutional building with stochastic frontier analysis

Yu, F.W.; Chan, K.T.; Yang, Jia; Sit, R.K.Y.

doi:10.1016/j.enbuild.2014.12.036

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…A series of experimental and simulation studies by authors (Yang, Chan, Wu, Yang, & Zhang, 2012;Yang, Chan, Wu, Yu, & Yang, 2012;Yu & Chan, 2005, 2006, 2009Yu, Chan, Sit, & Yang, 2013;Yu, Chan, Yang, & Sit, 2015) have confirmed that mist precooling of condenser air brings benefits of energy savings and sustainable use of water, with regard to chillers operating in a warm and humid climate. The benefits would be more appealing for chillers operating in a hot-arid climate.…”

Section: Opportunities and Challenges Of Mist Precooling Of Condensermentioning

confidence: 71%

“…The significances of this study are to illustrate more design and operating criteria to nurture their applications, and to identify potential integration with optimal control of air-cooled chillers. This study is related to a series of research work by authors on the sustainable design and operation of air-cooled chiller systems and the simulation of improved energy performance of air-cooled chillers with mist precooling (Yang, Chan, Wu, Yu, & Yang, 2012;Yu & Chan, 2005, 2006, 2007a, 2007b, 2008a, 2008b, 2009Yu, Chan, Sit, & Yang, 2013;Yu, Chan, Yang, & Sit, 2015). Vakiloroaya et al (2014) summarize two common devices placed in front of air-cooled condensers to cool evaporatively ambient air from the dry bulb temperature down to the wet bulb temperature.…”

Section: Introductionmentioning

confidence: 99%

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Evaporative cooling technologies for air-cooled chillers for building energy performance improvement

Chan

Yang

et al. 2015

Advances in Building Energy Research

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Where water conservation is concerned, central air-conditioning systems in commercial buildings are installed with air-cooled chillers for comfort cooling. This study examines evaporative cooling technologies for air-cooled chillers to improve their energy performance. Two common devices for cooling air intake to condensers are evaporative coolers and mist generators. Depending on weather conditions and packing materials, evaporative coolers can enhance the refrigeration effect and chiller energy performance at various degrees. Yet, different configurations and designs for air-cooled condensers call for tailor-made design of the coolers. The coolers also impose additional flow resistance to condenser air and, in turn, additional fan power. Mist generated in front of the condensers brings no flow resistance to condenser air and allows the dry bulb temperature approach closely the corresponding wet bulb temperature. The cooling effectiveness can be maximized with lesser water consumption. The benefit of evaporative cooling for air-cooled chillers is more appealing in future climate scenarios in a subtropical climate, considering the higher difference between the dry bulb and wet bulb temperatures. Integration of control and optimization strategies with mist precooling has been discussed.

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Section: Opportunities and Challenges Of Mist Precooling Of Condensermentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Evaporative cooling technologies for air-cooled chillers for building energy performance improvement

Chan

Yang

et al. 2015

Advances in Building Energy Research

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“…The randomness of this behavior, however, drives the analysis to the use of stochastic modelling. Various studies have focused on the importance of the occupants onto the building performance, especially the related to the energy consumption [8][9][10][11][12][13][14][15][16][17][18][19] and on the stochastic modelling necessary to understand the energy consumption and performance upon buildings [20][21][22][23][24][25][26][27][28][29][30]. Nonetheless, there is not, to the best of our knowledge, any similar study on Mexican buildings, neither analyzing the role of the occupants on the buildings nor developing stochastic modelling to analyze the performance of the buildings.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Energy Use in the Mexican Residential Sector by Using Two Approaches Regarding the Behavior of the Occupants

Oropeza-Perez

Petzold-Rodriguez

2018

Applied Sciences

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An analysis of the energy use in the Mexican residential sector is carried out. To achieve this, two approaches are taken into account. The first one is the usage of low-energy devices, and the second one is the decrease of their time of use. These two approaches are considered in the calculation method with random values of power and time of usage. The energy activities are divided into air-conditioning, illumination & appliances, and refrigeration. After total annual use is validated with the actual values of energy use in 2015, a sensitivity analysis of the approaches used separately and together is carried out in order to determine the potential of energy saving. Thereby, it is found that the most influential parameter for energy saving is the extensive acquisition of more efficient technologies of illumination & appliances, followed by the decrease of use of the same illumination & appliances. Furthermore, with an integrated approach that takes into account both the use of efficient devices and the reduction of their use for the three energy activities, a maximum of 19.67 TWh is calculated in 2015 for the Mexican residential sector. This approach is therefore expected to have a reliable basis for the development and improvement of policies that help to drive energy savings in an extensive manner in Mexico.

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A hybrid method of LMDI, symmetrical components, and SFA to estimate the distribution of energy-saving potential with consideration of unbalanced components in decomposition analysis

Fetanat

Shafipour

2017

Energy Efficiency

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Comparative study on the energy performance of chiller system in an institutional building with stochastic frontier analysis

Cited by 8 publications

References 14 publications

Evaporative cooling technologies for air-cooled chillers for building energy performance improvement

Evaporative cooling technologies for air-cooled chillers for building energy performance improvement

Analysis of the Energy Use in the Mexican Residential Sector by Using Two Approaches Regarding the Behavior of the Occupants

A hybrid method of LMDI, symmetrical components, and SFA to estimate the distribution of energy-saving potential with consideration of unbalanced components in decomposition analysis

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