Hi there,
I just have a question on the Air-side HVAC system ? I have AHU?s only
serving this building. One AHU per floor (Total AHU cooling capacity =
800,760 Btu/hr). What is the *?total cooling capacity?* that needs to be
entered in this case (when the system type is multi-zone..), can the
actual total cooling capacity be entered for all the zones or does it have
to be split (total capacity divided by the number of AHU?s) per zone? I
feel the energy consumption is highly dependent on this factor and hence I
would really appreciate if someone could come up with a solution.
I have attached the screenshot for reference.
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Hello Tanya, wrote:
Why don't you let the total cooling capacity for each AHU default for a test run and see what eQuest chooses?? I am unclear how many floors you actually have, but I believe eQuest will default to a number for each AHU that will carry the load. It may oversize it to a degree (it CERTAINLY does an overkill that way in heating).
Give it a try.
John R. Aulbach, PE
On Monday, May 27, 2019, 4:25:30 AM PDT, Tanya Soji via Equest-users
Hi there,
?
I just have a question on the Air-side HVAC system ? I have AHU?s only serving this building. One AHU per floor (Total AHU cooling capacity = 800,760 Btu/hr). What is the ?total cooling capacity? that needs to be entered in this case (when the system type is multi-zone..), ?can the actual total cooling capacity be entered for all the zones or does it have to be split (total capacity divided by the number of AHU?s) per zone? I feel the energy consumption is highly dependent on this factor and hence I would really appreciate if someone could come up with a solution.
?
I have attached the screenshot for reference.
?
?
This e-mail is from Eurostar Group. is intended solely for the person to whom it has been addressed. It should not be used by anyone else. It may contain confidential and/or legally privileged information. If you are not the intended recipient, you are notified that any use, distribution, transmission, printing, copying, dissemination or any action in reliance on it is strictly prohibited. If you have received this email erroneously, please delete this message and notify the sender.The recipient acknowledges that Eurostar Group /subsidiaries/ associated companies, are unable to exercise control or ensure or guarantee the integrity of/over the contents of the information contained in e-mail transmissions and further acknowledges that any views expressed in this message are those of the individual sender and no binding nature of the message shall be implied or assumed unless the sender does so expressly with due authority of Eurostar Group.? If the recipient thinks that any part of this email transgresses any law of the land, he/she I shall immediately alert Eurostar Group, by mailing their specific concern on compliance at eurostargroup.com Needless to reiterate that Consequently,? Eurostar does not take any liability whatsoever, for any such transgressions._______________________________________________
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Hi Tanya,
The cooling capacity you enter at the system is the cooling capacity for
each respective AHU unit (provide you are not using any floor multipliers).
If you are using multipliers (where each zone has a multiplier assigned to
it), than the cooling capacity is the total including the multiplier (so if
you had 3 identical floors and were modeling this as a multiplier of 3, the
AHU cooling capacity entered is the capacity for all 3 AHU's).
Chris
On Mon, May 27, 2019 at 7:25 AM Tanya Soji via Equest-users <
Hello Tanya,
The total cooling capacity for an HVAC system is the sensible capacity plus the latent capacity. The latent capacity is an important factor in humid climates.
Christopher R Jones, P.Eng.
T+ 1 416-644-0252
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