Quote from: sz921 on March 31, 2018, 10:02:20 PM

Hi Guys

i am renting a 1200 ft warehouse and i have 18 Antminer s9s

i only have a 4 or 5 inch exhaust to get rid of the hot air

i have tried the following for heat management:
1- installing an exhaust fan to the opening( building a box around the exhaust fan of the antminers to directly suck the hot air out )
2- i have tried to install a y-exhaust tube to the 4 or 5 inch opening the the roof for an ac and the exhaust fan
3- i moved the machines into a separate room with their exhaust faced outside the room(AC in the room) and had the box stated in number 1 outside the room

THE WAREHOUSE TEMPERATURE IS STILL 42 DEGREES CELSIUS

now i am thinking of evaporator cooling but i need suggestions on how to solve the heat issue

any suggestions? Huh

which is more important
1-cooling the room
2-getting rid of the hot air ?

okay there are some laws of physics.

you have 18 s-9's each have about a 120mm hole and strong fans

120mm = about 4.8 inches the area of a circle is pi r squared

or 2.4 x 2.4 x 3.14 + 18 square inches and you have 18 of them so 325 square inches is the smallest size for you exit hole

you have 2 x 2 x 3.14 = 12.56 square inches so you need to increase the hole 25 x and have fans to suck the air out.

you need 2 of these https://www.homedepot.com/p/Master-Flow-1600-CFM-Power-Gable-Mount-Attic-Fan-EGV6/205924917

I suggest you move the gear.