AC Chiller Optimization - Part 3 of 7 Part Series

Keith McAslan is a Managing Partner with ASG Energy a comprehensive solutions provider for energy savings using LED lighting, HVAC Optimization,  Solar Power and Energy Storage.  For additional information, please visit: or email at

Posted on Thursday 28th February 2019















Chiller System energy consumption and efficiency

What are the major components of a chiller?

The major components of a chiller are shown in the figure below:

Chiller components

What factors affect chiller system energy consumption?

Chiller system energy consumption depends on the ambient conditions (such as dry bulb temperature, relative humidity, wet bulb temperature, etc.) and on the cooling requirements or “cooling load” in the building or facility.

The largest energy using component is the compressor.

How is chiller system efficiency measured?

Chiller system efficiency is measured by the power required to provide the cooling needed by the “user” and is expressed in terms of kilowatts per ton of cooling (kW/Ton).

How can I improve my chiller efficiency?

Chiller system efficiency can be improved by operating the chiller as per the manufacturer recommended/specified conditions for the best operating efficiency (kW/Ton ) to meet the user requirements at the prevailing ambient conditions with the available equipment.

How does ECORE improve chiller efficiency?

ECORE is designed, customized, installed and maintained to continuously deliver optimum kW/Ton by adjusting the main factors affecting the chiller efficiency, consistent with the chiller manufacturers’ specifications for operation and safety and with user requirements for cooling.

Does ECORE work only on improving the efficiency of the chiller?

In addition to improving the efficiency of the chiller, ECORE also optimizes the efficiency of the other components of the HVAC system, such as air handlers. ECORE thereby achieves substantial efficiency improvements and reductions in energy consumption and costs.


About ASG Energy LLC

ASG Energy LLC is a comprehensive LED energy solutions provider, with a successful track record of managing energy reduction initiatives and installations for several Fortune 500 companies, schools and health care facilities throughout the U.S.  ASG Energy’s reach extends nationally to serve its customers.  For more information visit -

About Revolution Energy Group

Revolution Energy Group was established to provide next generation commercial energy efficiency solutions.  Revolution supports public and private sector facility owners and managers who seek high ROI “Energy Intelligence” to reduce operating costs and meet sustainability goals. For more information please visit See this link for the optimization beyond HVAC Optimization.

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