Cooling options for 38°C+ environments?

Question

Accepted Answer

Short answer For 38°C+ sites, the decisive number is the local maximum wet-bulb temperature, not the dry-bulb. Evaporation pads and misting or spray systems can pre-cool intake air; whether a dry cooler still suffices or a closed-circuit cooling tower is required follows from how close the wet-bulb gets to the equipment's maximum allowable inlet water temperature. Wet-bulb is the deciding metric Evaporation pads pre-cool intake air Misting or spray as added assist Dry cooler vs closed-circuit tower Choosing between the two heat-rejection routes OptionWhen it worksThe deciding condition Dry cooler (+ evaporation pad)Auxiliary heat dissipation where the equipment's fluid temperature differential allows it.Wet-bulb stays safely below the maximum allowable inlet water temperature. Closed-circuit cooling towerWhen the site must exploit evaporative cooling to hold inlet water temperature in spec.Wet-bulb approaches the equipment's maximum allowable inlet water temperature. How the assessment works Heat rejection hardware sized against the site's real wet-bulb profile. Wet-bulb, not dry-bulb, decides. Evaporative performance is limited by moisture in the air, not air temperature alone. Pad and misting systems can be deployed to manage extreme ambient heat before it reaches the heat exchanger. The spec of your equipment matters. The allowable inlet water temperature and fluid temperature differential determine which route holds. Dry cooling tower sized for the site climate. Heat rejection repeated across the deployment. Related questions Daily water usage per 100kW load? How does the SR40 V3 perform in extreme ambient temperatures? Freeze protection for dry coolers at -20°C? Send us your site's climate data for a cooling route assessment. Talk to a CoolSpace engineer

Cooling options for 38°C+ environments?

Short answer

Choosing between the two heat-rejection routes

How the assessment works

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Option	When it works	The deciding condition
Dry cooler (+ evaporation pad)	Auxiliary heat dissipation where the equipment's fluid temperature differential allows it.	Wet-bulb stays safely below the maximum allowable inlet water temperature.
Closed-circuit cooling tower	When the site must exploit evaporative cooling to hold inlet water temperature in spec.	Wet-bulb approaches the equipment's maximum allowable inlet water temperature.