Chilling

Basic cooling system

For effective utilisation of cooling system, we need to ensure "The greater the temperature difference between cold and hot side"

By proper selection of components and systems solutions,

the installed cooling capacity can be used at part load (normal load) to create high efficiency cooling system

Effective use of Use heat exchanger

Here selection of designs that allow us to use all the available heat exchange surfaces at part load.

In this way it is possible to save compressor, pump and fan work.

For example in parallel chiller operation all heat exchange surfaces are always in operation in this solution.

Thereby a favourable ratio between cooling capacity and heat exchanger surface is achieved in part load.

This solution makes the plant more energy efficient

Frequency converters for compressor and condenser cooling tower fans and pumps

A centrifugal compressor with variable speed has improved efficiency at part compeer to full load.

Condenser cooling fan speed will be trimmed, when the dry cooler or condenser needs half of cooling capacity

Here VSD will control the fan speed which require only 10-15% of the energy

The main cooling system circulation pump can be controlled to constant pressure differential and variable water flow.

For secondary cooling pumps at cooling loads to constant temperature differential pump energy consumption reduced.

Floating evaporation/condensation temperature

Systems where temperatures freely fluctuate based on ambient conditions and load demands rather than being fixed.

Allowing these temperatures to float allows the system to operate with a lower pressure ratio.

This solution offers great savings potential

Chilled water temperature in temperature steps

With cooling temp in step, we can separating comfort cooling from the main load

Here we can get the advantage like

a) Partly free cooling.

b) High efficient heat pump heat recovery.

c) Process cooling load chilled high temperature.

d) Opportunity to create low temperature chilled water at peak load.

e) Creates a highly redundant system