KICK Life Support is a life support mod for KSP that is more realistic than TAC, but isn't as expansive as Kerbalism. Rather than being about the resources, it's about the hardware that makes life support function. It's more immersive for the player, and it even gives you some regular housekeeping tasks to do on your active vessel.
THIS MOD IS A WORK IN PROGRESS - It's designed explicitly to kill your kerbals when they run out of food, water, oxygen, and lithium hydroxide. There are bound to be bugs that could kill your Kerbals out of nowhere. So don't blame me when they perish.
BUT if they do die unexpectedly, file a bug report.
Kerbals need food, water, oxygen, and stable temperatures to survive. They're energetic little guys with high metabolisms, so resources go fast. They also make waste products which have to be managed.
Kerbals eat Food and drink Water, producing Waste and WasteWater. There is a small supply onboard a Command Pod (1 liter of each, or about 13.9 hours of Food and 9.25 hours of Water per Kerbal). If you need more, bring it.
Kerbals breath Oxygen and then exhale CarbonDioxide. Unlike other life support mods, CarbonDioxide isn't stored in a tank; it builds up in the cabin air. In zero-G, it can form "bubbles" and needs to be stirred throughout the cabin. A cabin fan (part of the Climate Control system) keeps the air circulating to prevent CO2 from collecting in one spot.
To eliminate CarbonDioxide, a Command Pod is equipped with a Lithium Hydroxide Scrubber, which pulls the cabin air through a LiOH canister using a fan.
The scrubber removes CO2 from the cabin, generating heat. LiOH is provided by a canister. One LiOH Scrubber Canister gives enough LiOH for about 9 hours per Kerbal -- 4.5 hours for two Kerbals, and 3 hours for three Kerbals. That means you need to bring extras if you're having a long mission. Store them in your Command Pod's inventory (they won't be pulled from a Kerbal's inventory). When the cabin runs out of LiOH, you can reload the scrubber if you have a canister onboard. The old canister's volume is converted to Waste stored in the Command Pod's waste tank. As LiOH gets used, it also becomes waste. The scrubber is EC-dependent and will only work if there's power to run the fan.
Space is cold, and without something generating heat, the cabin temperature can drop dangerously low. Luckily, a spacecraft is just chock full of heat sources. For one, Kerbals themselves generate body heat. The CO2 scrubber also generates heat when it's in use. Command Pod electronics also generate heat, such as the avionics package, the SAS and RCS computers, and even the environmental control system itself. A cabin heater is used in combination with a thermostat to keep the cabin at a comfortable 22 degrees Celsius. If the temperature climbs dangerously high, radiators can be automatically deployed.
Almost everything onboard that is part of the life support system requires EC to run it.
The entire Command Pod uses an Avionics package to allow command and control to occur. When it's on, it consumes EC and generates heat and the pod is controllable. Turn it off, and the pod is no longer controllable, but no heat gets generated and no EC is used.
SAS and RCS also have independent electronics that are on when they are enabled (even if the stability wheels aren't running and the RCS isn't firing). Those electronics now run off of EC and generate a small amount of heat when they are turned on.
WARNING: This mod significantly increases power consumption to realistic levels. A standard Command Pod battery will only last about 20 minutes with all systems active. You must plan for power generation (Solar/Fuel Cells) even for short trips, or lots of battery.
Raw stats are from the beginning of time until now. Each follower and download entry represents one hour of data. Uneventful hours are omitted.