Dear All,
we’re currently developing energy simulation of an hotel that will include heated pools (both indoor and outdoor). These pools will be probably heated using dedicated heat-pumps (but gas boilers are not yet disregarded).
According to Table G3.1 item 11 (from ASHRAE 90.1-2010), baseline building service hot water system shall be electrical resistance as long as proposed building uses electricity as energy source for its DHW system (“where energy source is electricity, the heating method shall be electrical resistance”). Given this, we will consider that baseline building uses electrical resistances for pool water heating.
Can you please confirm that this understanding is correct?
Thanks in advance,
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
May 18, 2020 - 10:04 am
Pool wter heaters are not regulated by 90.1 and this load is considered a process load which is modeled identically in both models.
Ricardo Sá
Director of SustainabilityEdifícios Saudáveis Consultores (503 910 767)
84 thumbs up
May 19, 2020 - 4:09 am
Hi Marcus,
Thank you for your feedback.
ASHRAE 90.1-2010 includes a section with requirements for heated pools (section 7.4.5). Table 7.8 from the same standard also includes efficiency requirements for pool heaters. Given this, we assumed pool heaters were included in the scope of 90.1. Can you please confirm?
Regards,
Cam Fitzgerald
3 thumbs up
May 19, 2020 - 9:55 am
Hi Ricardo,
You are correct; the Baseline should reflect the mandatory and prescriptive provisions noted, and savings may be claimed for improved efficiencies. Note that the pool losses and operating schedules should be identical (conductive, evaporation, etc.).
Regards,
Cam