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ASHRAE climatic design conditions station finder. Just right click: on site on the map and get nearest weather stations!
Typical requirements: minimum temperature is 15°C, maximum temperature is 32°C, minimum RH is 20%, maximum RH is 80%, maximum DP is 22°C, rate of change of temperature is less than 5°C/h, rate of change of humidity is less than 5% rh per hour, and no condensation.
ASHRAE Standards and Guidelines Links to purchase print and/or electronic copies: Guideline 1.4-2019 -- Preparing Systems Manuals for Facilities >> Purchase print or PDF. ASHRAE Guideline 11-2018 -- Field Testing of HVAC Control Components >> Purchase print or PDF
ASHRAE’s document [1], “Thermal Guidelines for Data Processing Environments– Fourth Edition” has increased the industry’s awareness of the effect increased operating temperature can have on IT equipment.
requirements: minimum temperature is 15°C, maximum temperature is 32°C, minimum relative humidity is 20%, maximum relative humidity is 80%, maximum dew point is 22°C, rate of change of temperature is less than 5°C/h, rate of change of humidity is less than 5% RH per hour, and no condensation.
The thermal guidelines publication has both recom-mended and allowable ranges. While other parameters (such as air pollution and elevation) are also limiting factors, the primary environmental operating condi-tions are related to temperature and humidity (both relative and absolute) and are displayed on sea level psy-
degree-day: the difference in temperature between the outdoor mean temperature over a 24-hour period and a given base temperature. For the purposes of determining building envelope requirements, tThe classifications are defined
