Metering and Out of Range Values
Posted: Tue Feb 17, 2015 5:27 pm
A couple of questions on 'metering' and 'out of range' values.
In IES you specify this for each HVAC system (and lighting). Does this mean a system has to individually sub metered?
i.e. One meter per air handling unit?
Or would a single heat meter for all CT heating circuits count?
Can you apply the 5% benefit to domestic hot water?
According the EPC conventions, point of use hot water should be entered with 100% efficiency? If this is being metered and monitored can it be pushed up 105%?
I often use the 'not set' system type for DHW. So can the figures be manually adjusted?
Here delivery efficiency is handled by a separate calculation (circulation and storage loss) so would the improvement go on the generator efficiency or delivery efficiency if it applies?
Any help would be appreciated
Ross
In IES you specify this for each HVAC system (and lighting). Does this mean a system has to individually sub metered?
i.e. One meter per air handling unit?
Or would a single heat meter for all CT heating circuits count?
Can you apply the 5% benefit to domestic hot water?
According the EPC conventions, point of use hot water should be entered with 100% efficiency? If this is being metered and monitored can it be pushed up 105%?
I often use the 'not set' system type for DHW. So can the figures be manually adjusted?
Here delivery efficiency is handled by a separate calculation (circulation and storage loss) so would the improvement go on the generator efficiency or delivery efficiency if it applies?
Any help would be appreciated
Ross