Optimization of water-cooled chiller system with load-based speed control

Yu, F.W.; Chan, K.T.

doi:10.1016/j.apenergy.2008.02.008

Cited by 95 publications

(36 citation statements)

References 10 publications

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“…The precise strategy sets an outlet water temperature similar to the target of 32.5°C, and the lowest energy consumption is at the expense of frequent ON/OFF switching (in this case, 34 times within a day). For the 0.5°C zone control, the outlet water temperature varies between 32.0 and 32.5°C with 16 increases sharply in the precise target scenario in Fig. 7.…”

Section: Implementation Of Temperature Zone Controlmentioning

confidence: 95%

“…Yu and Chan [16] used a load-based method to control the speed of cooling tower fans and condenser water pumps in order to improve the energy efficiency of a cooling tower system, and highlighted the need to widen the use of such control systems. Aha and Mitchell [17] proposed optimal supervisory control strategies for the set points (exact values) of controlled variables such as supply air, chilled water, and condenser water temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Energy conservation improvement and ON–OFF switch times reduction for an existing VFD-fan-based cooling tower

et al. 2015

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Section: Implementation Of Temperature Zone Controlmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Energy conservation improvement and ON–OFF switch times reduction for an existing VFD-fan-based cooling tower

et al. 2015

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“…In this experiment, 25 drivers were involved in analyzing of the result. An automatic speed adapter was installed into each participant car [8]. This is meant to be used on the fuel pedal set not more than 50km/h.…”

Section: Historical Overview Of Intelligent Speed Assistance Systemmentioning

confidence: 99%

Wireless DC Motor and Breaking Control System

Ahmed¹

2016

IJIRSET

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ABSTRACT:Wireless DC motor and brake control system is a system that's been designed to control the speed in high rate accident and to reduce the number of accidents. A braking system has been designed and connected to the system to be controlled automatically. Microcontrollers are used in automatically controlled products and devices, such as automobile engine control systems. The programming in this project was done and installed into the microcontroller to give the orders to the system. Radio frequency is the main responsible to control the signal between the transmitter and the receiver units. The DC motor was used to present the engine of the car and it was connected and controlled by the system. This paper presents the structural prototype, hardware design implementation and the software development.

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“…Larsen and Thybo (2004) Energy saving in commercial refrigeration describe a means for calculating the optimal pressure difference across the compressor in terms of energy consumption resulting in a 30 per cent decrease in energy consumption. Yu and Chan (2008) propose a model for analysing control procedures for condenser fans and extend this to provide fan control based on load which can provide performance improvements in the range of 7.8-113.2 per cent. Ghorbanian and Gholamrezaei (2009) describe the use of an artificial neural network for predicting compressor performance.…”

Section: Condition Monitoring Technologiesmentioning

confidence: 99%

The role of maintenance in energy saving in commercial refrigeration

Knowles

Baglee

2012

Journal of Quality in Maintenance Engineering

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Purpose -The purpose of this paper is to investigate the link between maintenance and energy saving in a commercial refrigeration setting. Design/methodology/approach -Since there is little data available from within the industrial sector, the authors have surveyed the literature for evidence of a link. Findings -Maintenance procedures play a major role in ensuring refrigeration equipment operates at maximum efficiency.Research limitations/implications -Little real world data is available and this is a major problem at present. Improved maintenance policies can only be developed. Practical implications -Substantial energy savings can be achieved if maintenance procedures are improved based on detailed measurement of energy usage. Monitoring the condition and performance of individual parts of a system are found to be crucial aspects in obtaining optimal performance. Originality/value -This paper highlights a neglected area in both energy saving and in maintenance planning.

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Optimization of water-cooled chiller system with load-based speed control

Cited by 95 publications

References 10 publications

Energy conservation improvement and ON–OFF switch times reduction for an existing VFD-fan-based cooling tower

Energy conservation improvement and ON–OFF switch times reduction for an existing VFD-fan-based cooling tower

Wireless DC Motor and Breaking Control System

The role of maintenance in energy saving in commercial refrigeration

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