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Systems/Admin-DataCenter/cooling/PFVCooling2021.md

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+# TSYS Group - HQ data center documentation -  cooling
+
+## Introduction
+
+Cooling is a critical component of any data center. It is often the dominate consumer of energy.
+
+We keep our data center at about 70 degrees F.
+
+## Make / model
+
+We have a
+
+* HiSense Portable Air Conditioner (standalone) the manual lists several possible models, unsure which exact one we have. It was about 700.00 at Lowes with a multiple year replacement warranty.
+
+which is rated for:
+
+* 15,000 BTU
+
+It draws about 7 amps when the compressor is running.
+
+With our heat load, the compressor does cycle on/off ,so it keeps cool pretty efficiently from an energy perspective.
+
+## Tips/tricks
+
+* Extended exhaust house
+
+We moved the air conditioner to the front of the racks (cold aisle) and extended the exhaust
+hose todo so.
+
+* Heat barrier
+
+ We deployed a cardboard heat barrier above the racks, to keep hot air behind the racks. We also have a vent duct (made of cardboard) to a panel we removed above the doorway.
+
+* Insulation
+
+  * Insulate the exhaust hose!
+
+* Air movers
+  * We have a tower fan in the hot row (back), pushing the heat towards the duct.
+  * We have two small blowers in the cold row (front) helping "kick back" the air blowing from the HiSense.
+
+## Instrumentation
+
+We use:
+
+* temper usb probe
+* lm-sensors
+* DRAC
+
+all consumed via SNMP by librenms to monitor/alert on temperature.This lets us find hot/cold spots across the racks and make any necessary adjustments.