Hellow Everyone,

1) In the case of a technical space (equipment room) that is a Conditioned Space as per ASHRAE 90.1 and, therefore, must be simulated as a heated/cooled reference office space: Should the lighting load in the proposed building be calculated considering the actual installed lighting power or should it be calculated with the same office LPD as the baseline building?

2) An indoor boiler room (or chiller room) with permanent openings (louvers) to the outside should be considered an "Indirectly Conditioned Space" ? Should we consider it as not being "enclosed spaces", and therefore as unconditioned spaces?

3) Because there is no thermal coupling between spaces in the HAP modeling program, it is not possible to include directly the "Unconditioned Spaces" into the program. Heat losses/gains between spaces are simulated by introducing "partitions". HAP assumes a linear temperature evolution between the interior and exterior temperatures to obtain an approximate value for the heat transfer through a wall/floor dividing a conditioned and an unconditioned space.
Therefor in HAP it is not possible to consider an Unconditioned Spaces as thermal blocks. A thermal block comes always associated to a system (a thermostat).
Nevertheless, we are being asked to consider unconditioned spaces has thermal blocks. What do you think is the better way to proceed?

Best Regards.