Experimental analysis of ON/OFF and variable speed drive controlled industrial chiller towards energy efficient operation

Olszewski, Paweł

doi:10.1016/j.apenergy.2021.118440

Cited by 8 publications

(1 citation statement)

References 27 publications

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“…Yet, the full variable speed control for chillers, pumps and cooling towers was not considered. Olszewski [10] ascertained the superior performance of variable speed chillers to handle part-load conditions compared with common on/off controlled chillers. Some recent studies in references [11][12][13][14][15][16][17][18] focus on the optimum loading of multiple chillers with various optimization algorithms.…”

Section: Reference Research Problem Variables Optimized Optimization ...mentioning

confidence: 99%

Time Series Forecast of Cooling Demand for Sustainable Chiller System in an Office Building in a Subtropical Climate

2023

Sustainability

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Commercial buildings can take up one-third of the energy related carbon emissions. There is limited research on forecasting cooling demands to evaluate sustainable air conditioning systems under climate change. This paper develops a simplified cooling demand model based on the time series of climatic and architectural variables to analyze carbon reduction by a sustainable chiller system. EnergyPlus is used to simulate hourly cooling demands of a hypothesized high-rise office building in Hong Kong under a change of architectural parameters and future climate conditions. An hourly cooling demand model with R2 above 0.9 is developed with inputs of the window-to-wall ratio, outdoor air enthalpy, global solar radiation, wind speed and their two steps ahead. The validated model is then used to analyze carbon reduction potentials by free cooling and a full variable speed chiller system. The low carbon technologies reduce carbon emissions by over 20% with but the reduction shrinks to 2.51–4.93% under future climate conditions. The novelty of this study is the simplified cooling demand model based on the time series of climatic and architectural variables. The significances of this study are to quantify carbon reduction by a sustainable chiller system under climate change and to appeal for more carbon reduction technologies for carbon neutrality.

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Section: Reference Research Problem Variables Optimized Optimization ...mentioning

confidence: 99%

Time Series Forecast of Cooling Demand for Sustainable Chiller System in an Office Building in a Subtropical Climate

2023

Sustainability

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Simulation analysis for controlling temperature stability of a radiant-board system served for thermodynamic temperature measurement laboratory

Liu,

et al. 2024

Build. Simul.

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Efficiency improvement of the air-cooled packaged water chiller unit with three-phase alternating current control technology

Liu

Chow²,

Lee³

et al. 2022

Case Studies in Thermal Engineering

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Experimental analysis of ON/OFF and variable speed drive controlled industrial chiller towards energy efficient operation

Cited by 8 publications

References 27 publications

Time Series Forecast of Cooling Demand for Sustainable Chiller System in an Office Building in a Subtropical Climate

Time Series Forecast of Cooling Demand for Sustainable Chiller System in an Office Building in a Subtropical Climate

Simulation analysis for controlling temperature stability of a radiant-board system served for thermodynamic temperature measurement laboratory

Efficiency improvement of the air-cooled packaged water chiller unit with three-phase alternating current control technology

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