3 replies to this topic

[Alaskan Nobody]

A guide for heat capacity and dissipation

The Rules.

• All mechs require a minimum 10 heat sinks to function
  
• Engines come with 1 HS built in for every 25 rating up to the 250 engines
  
• Standard or XL engine has no impact on this

• All rates of Dissipation are given per second

• Single Heat Sink [SHS] are worth 0.10 Dissipation each
  
• [SHS] are worth 1.00 extra Heat Capacity each

• Double Heat Sinks [DHS] are worth 0.14 to 0.20 dissipation each
  
• [DHS] are worth 1.40 to 2.00 extra heat capacity

• Invisible [DHS] are worth 0.20 dissipation and 2.00 capacity
  
• Invisible [HS] are the ones built into the Engine
  
• Visible [DHS] are worth 0.14 dissipation and 1.40 capacity
  
• Any [DHS] manually added to the engine count as Visible

Example:
XL400 with 6 [DHS] added to the engine
XL400 with 6 [DHS] put outside the engine
Both have the same Heat Rating


Summary of Engine values at 10 Single Heat Sinks

Spoiler

ENGINE ---- DISSIPATION - CAPACITY

100-120 ------- 1.00 ----------- 40

125-145 ------- 1.00 ----------- 40

150-170 ------- 1.00 ----------- 40

175-195 ------- 1.00 ----------- 40

200-220 ------- 1.00 ----------- 40

225-245 ------- 1.00 ----------- 40

250-270 ------- 1.00 ----------- 40

If using SHS - it makes no difference to your heat capacity which engine you use.

Summary of Engine values at 10 Double Heat Sinks

Spoiler

ENGINE - DISSIPATION - CAPACITY

100-120 ------- 1.64 ----------- 46.4

125-145 ------- 1.70 ----------- 47.0

150-170 ------- 1.76 ----------- 47.6

175-195 ------- 1.82 ----------- 48.2

200-220 ------- 1.88 ----------- 48.8

225-245 ------- 1.94 ----------- 49.4

250-270 ------- 2.00 ----------- 50.0

250 Engines are usually the most efficient if only using 10 DHS

Summary of Heat Capacity with [DHS] filled Engines above 250

Spoiler

ENGINE - DISSIPATION - CAPACITY

275-295 ------- 2.14 ----------- 51.4

300-320 ------- 2.28 ----------- 52.8

325-345 ------- 2.42 ----------- 54.2

350-370 ------- 2.56 ----------- 55.6

375-395 ------- 2.70 ----------- 57.0

400....... ------- 2.84 ----------- 58.4

Above a 250 you get more space for HS (built into the engine) but gain less increase per-DHS

For Fun

Spoiler

Classic Battletech - the tabletop game this is based on, had a flat 30 point heat capacity.

Heat Dissipation/Capacity MAXIMUMS for [DHS] (Inner Sphere)

28 [DHS] STD 400 4.52 Dissipation 75.2 Capacity

Heat Dissipation/Capacity MAXIMUMS (Clan)

35 [DHS] XL400 4.66 Dissipation 76.6 Capacity

Heat Dissipation/Capacity MAXIMUMS for [SHS]

61 [SHS] STD 350 6.10 Dissipation 91.0 Capacity

The SHS one is completley non-functional (no weapons for one thing)
But enough SHS can overcome the DHS potential as DHS run out of crit slots after 18 externals
Not worth it though - simply from the tonnage required - in comparison to the DHS.

Heat Simulator for future reference and experimentation
SHOULD be good now

Edited by Shar Wolf, 28 February 2015 - 10:42 AM.

[TheArcher]

Any thought of automatically calculating the time to reach maximum heat capacity for a loadout, i.e. how long a mech can maintain max DPS before it needs to stop firing? I find it useful to know if changing a loadout to lower the DPS slightly increases the mech's full-fire time significantly.

[Averen]

Good guide. A small thing tho, external Engine DHS are also providing the 2.00 capacity.

[Tiamat of the Sea]

TheArcher, on 25 March 2015 - 12:26 PM, said:

Any thought of automatically calculating the time to reach maximum heat capacity for a loadout, i.e. how long a mech can maintain max DPS before it needs to stop firing? I find it useful to know if changing a loadout to lower the DPS slightly increases the mech's full-fire time significantly.

Smurfy's will do this for you. It even lets you adjust the individual weapons between 100% fire rate and 0% fire rate, and takes quirks into account on top of that. You just have to hit the 'Weaponlab' button at the top of the Smurfy Mechlab.