[Equest-users] The question about the system type of HVAC

[John Aulbach]

Very simply, a variable volume(VAV) system with HW reheat varies the volume of air thru the system, thus lowering cooling coil usage. When the airfow gets to a minimum point, the reheat coil may kick on to increase air temp.
The standard reheat system is a constant volume system, which will use more cooling and probably more heating as well.
See if these are the results you are seeing.
John R Aulbach, PE

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------Original Message------
From: 黄永村 <yongcun at outlook.com>
To: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Date: Saturday, May 17, 2014 9:57:23 PM GMT+0800
Subject: [Equest-users] The question about the system type of HVAC

HELLO,
Everyone, I am a learner ,now I have a question about the system type of HVAC .When the cooling source is chilled water coils and the heating source is hot water coils ,the system type of HVAC have many choices, such as Standard VAV with Hot Water Reheat and Reheat Fan System with Hot water Reheat. In the Air-side system type of the Wizard interface, the parameter information is no differences between the two system type(Standard VAV with Hot Water Reheat and Reheat Fan System with Hot water Reheat),but the result  is so difference.I want to know the two system where is different? 
I am sorry that my English is not better .thank you again. 		 	   		  
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