Hizard - Create a "default" construction type that takes tau from SIA 2024 (non-variable)

[maxenceryan]

Problem

Currently the construction type selection uses room specific heat capacity values from SIA 380 construction templates. These are then used to variably calculate tau in the sia380 component.

Previously, we only used fixed tau values from SIA 2024.

Proposal

• reintroduce fixed tau for calculations from SIA 2024
• enabled (from user side) when selecting "default" from construciton types drop down
• add tooltip for clarity

Related to #647

[maxenceryan]

(comment to track results of v10.2 version comparison)

setup

• files from PR
• Rhino 7 SR10 (7.10.21256.17001)
• redirect path to EPW
• open/close hizard to make sure FixedTimeConstant set as in hizard (possibly a bug upon initial BuildingInputState creation)

Observations

Inputs to sia380

1. The net floor area is used according to SIA 2024 (0.9* the gross area). Link to commit https://github.com/architecture-building-systems/hive/commit/19e19d7173fc5cc5ea00e7431acbce1b2e6f22ac

   • In GhDistSia.SolveInstance()
   • In Zone
   • Affects: dhw (only PR), internal gains, ventilation, (variable tau, only PR),

2. surface type by component type rather than simply trans/opaque. But values are the same, so should not have an effect

3. some surfaces missing?

4. Oddly solar gains are slightly different

Results

Only component sia380

• while testing sia380 for the PR and v10.2 outside of grasshopper, with same inputs, results do not differ apart from very slight floating point errors (0.001 kwh scale). So the problem is probably due to different input being provided by other components.

PR

v10.2

From chris

• had adaptive comfort at 90 bounds

• changed adaptive comfort to 80 bounds