Hemogen amplifier

The hemogen amplifier is a deathrest building added by the Biotech DLC that allows Hemogenic deathresters to receive more hemogen from all sources.

Acquisition

Hemogen amplifiers can be constructed once the Deathrest research project has been completed. Each requires 200 Steel, 4 Components, 5 Hemogen packs, 5,000 ticks (1.39 mins) of work, and a Construction skill of 4.

Summary

Active hemogen amplifiers require a pawn capable of deathrest, like a Sanguophage, and must be connected to a deathrest casket. Each hemogen amplifier consumes 100W of power and 0.5 hemogen pack per day as long a pawn is deathresting in an attached casket. It can hold up to 5 packs at a time, for a maximum run time of 10 days, and is constructed fully fueled. The amplifier will be automatically refueled by a haulers so long as auto-refueling is enabled.

The hemogen amplifier increases Hemogen gain by +25% from any source, assuming deathrest isn't interrupted. This reduces the need to drink blood as frequently.

Like other deathrest buildings, an amplifier permanently binds to a pawn once used, with no penalty for deconstruction. Deathresting pawns have their own separate limit to the buildings they can connect to, which can be increased with a deathrest capacity serum.

Analysis

The amplifier both consumes and saves hemogen. The actual resulting economy therefore depends on the time spent using the amplifier and the hemogen consumption between deathrests.

The amplifier consumes 0.5 hemogen packs per day of deathrest, therefore the total consumption per deathrest per amplifier is as follows:

Deathrest facilities	Deathrest time	Packs consumed
Deathrest casket	3.64 days	1.82
↳+1x Deathrest accelerator	3.03 days	1.52
↳+2x Deathrest accelerator	2.53 days	1.26

A pawn must Deathrest every 30 days, as such their natural hemogen need, and the savings from the amplifier, are calculable.

Note: Values are given in hemogen packs for ease of comparison, but the total efficiency is directly applicable to all hemogen sources. Similarly, hemogen consumption is listed in packs consumed to maintain a given level, rather than in actual hemogen given.

Hemogen Packs Consumed	Hemogenic	Hemogen drain
Base	3	15
↳+1x Hemogen amplifier	2.4	12

Therefore, an amplifier produces a saving in hemogen consumption from the base decay of pawns with hemogen drain, but not for pawns with hemogenic alone. Note that sanguophages have hemogen drain by default.

The use of hemogenic abilities also contributes to the economy however. A pawn with only hemogenic would still benefit from the amplifier if they spend at least 24.4 hemogen on abilities in the 30 days between deathrests. This is equivalent to 5 uses of Longjump legs or 1.22 uses of coagulate.

Hemogen amplifiers should be weighed against simply obtaining more colonists or prisoners and the opportunity cost of not using a glucosoid pump or deathrest accelerator. Deathrest building capacity is very limited in most stages of the game, and either building is usually more useful than the amplifier. However, amplifiers are one of the few deathrest buildings that does not have its own limit, making them useful once you have enough of the other buildings.

They also do not consume power while idling, unlike their contemporaries such as sleep accelerators. Hence, they can be left idle without consequence.