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A progressive regime.

The obvious, although usually impractical, way would be to locate the data centre in a colder climate where the average temperature is lower, allowing for free cooling to operate for longer and reducing the mechanical cooling hours operated.This won't be practical for most data centre operators due to cost, land, power and connectivity availability.. A more practical way to reduce the mechanical cooling demand is by increasing the air/water temperature supplied to the data hall.

For example, migrating to ASHRAE A1 Allowable temperature range from ASHRAE A1 Recommended during peak external ambient conditions could reduce OPEX considerably.. ASHRAE Environmental Classes (Allowable) for Data Centres.Hot and cold aisle separation is standard in all new data centres, however, improved air flow management and hot aisle containment (HAC) leakage reduction can have a positive improvement on air temperatures in the room.. Air Side Economisers.In data centres operating within ASHRAE A1 Allowance temperature and located in colder/dryer climates, direct evaporative coolers (DEC) are a highly efficient solution, however, they utilise a larger footprint on the site.

These systems can potentially operate in free cooling mode year-round, leveraging both dry and adiabatic cooling based on external conditions.This can translate to low reliance on mechanical cooling and potentially exceptional PUE values..

Using water for adiabatic cooling allows the unit to cool the air close to the wet bulb temperature of the ambient air as opposed to the dry bulb temperature (dry cooling).

Due to the wet bulb temperature being often many degrees below coincident dry bulb temperature, in high dry bulb conditions this can mitigate the requirement for mechanical cooling.. Data Centre with DEC unit.At a point in each project, we go through the process of defining Chips for that project, in order to develop a Chip library.

This can start with a reference design, or a blank piece of paper.Or we might start with a similar type of project for which we've generated Chips in the past.. Chips can be made at different levels.

A chip is not a module or a piece of equipment, it's a part of a chain.Depending on the problem you're trying to address, you can set the level of the size of the Chip to the level that is appropriate to your analysis.