On this page of out Breathedge guide you'll find info regarding the cooling area - one of the story-related areas found in Chapter 4.
Entering the station
Head to the question mark on the right, behind the asteroids. You'll find a station there. Destroy the ice blocking the docking module and enter the station. You don't have to wonder where to go, as there's only one path available.
Find the Cooling Unit blueprint
Behind closed doors you'll find refrigerators. Next to the refrigerator on the right marked with a number 4 you'll find a Cooling Unit blueprint on the floor (1 out of 3).
Behind the gate, on top of the stairs next to a destroyed coffin you'll find the first Navigation Chip. Head right...
Scan the man in metal in one of the refrigerators (Cooling Unit blueprint). Now go through the door in front of you and enter the next room.
At the end of the room, by the pile of electronics, you will find another Navigation Chip (and a case - another Cooling Unit blueprint). Walk up to the panel near the gate - if you've scanned all three Cooling Unit blueprints you can turn off the cooling system and reach the next area of the station through the gap.
Find the working fluid
You need an access card to progress. It's held by one of the corpses trapped in a water orb (you need to fly inside - it's the one with a wreckage fragment sticking out, the corpse can be found in its center).
While exploring the other rooms you'll find a hallway with many rooms on the left. The third room has a filter on the bed (needed to create a filtration system).
Examine the console in the last room, then destroy four electrical devices in the same room. Finally, you must obtain Working Fluid x4. You can get it by using a Drill and drilling into the bodies locked in refrigerators you've encountered earlier. You won't need more than four fluids, as it's not used in any other blueprints. After obtaining the ingredients return to the Normandy and build the Cooling Unit. You need:
- Working Fluid x4,
- Non-conductive Gel x2
- a Generator.
The module must be installed in the cockpit, to the left of the steering wheel. By installing it, you'll finish the first stage of Chapter 4.