[Hap-users] VRF System Part Load Condition

Nicholas Couture, LEED AP ncouture at emtec-engineers.com
Fri Oct 12 06:13:36 PDT 2012



I understand it to be that HAP has the part load curves built into the
program.  How exactly they came up with their curves I'm not sure.  So
you will enter in the design capacity of the system and the full load
EER among other things, and at any given hour the part load energy usage
will be calculated based on HAP predetermined part load curves.



Nicholas J Couture, P.E., LEED AP

Mechanical Engineer  


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From: hap-users-bounces at lists.onebuilding.org
[mailto:hap-users-bounces at lists.onebuilding.org] On Behalf Of Sapar,
Majid Haji
Sent: Friday, October 12, 2012 5:35 AM
To: hap-users at lists.onebuilding.org
Subject: [Hap-users] VRF System Part Load Condition
Importance: High


Hi All,


Need your advice on the following:


Our job recently requires us to run energy modelling with part load
condition by using VRF system. We realised that Version 4.6 added VRF
system as new features. However, we are not sure how to input the
various operating conditions to get the part load profile of the
equipment. Would anybody be able to advise us how this is done?




Majid Sapar
Associate, Environmentally Sustainable Design
Parsons Brinckerhoff
300 Beach Road #05-00 The Concourse
Singapore 199555

+65-6533 73339 (office)
+65-6290 1434 (direct)
+65-6533 7707  (fax)

majid.h at pbworld.com <mailto:mcaclister at pbworld.com> 

www.pbworld.com <http://www.pbworld.com/> 


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