Trane TRG-TRC014-EN manual period six, Review-PeriodOne, VAV Systems

period six

Review

notes

VAV Systems

period six

Review

Figure 104

Now, we will review some of the main concepts from this clinic on variable- air-volume (VAV) systems.

Review—Period One
EA					RA
OA			PA
	central			VAV
	air handler				box
		thermostat
				SA
© American Standard Inc. 2001
						Air Conditioning Clinic TRG-TRC014-EN

Figure 105

Avariable-air-volume (VAV) air-conditioning system varies the volume of constant-temperature primary air to meet changing load conditions in the space. VAV systems can provide both fan and refrigeration energy savings at part load, while efficiently serving many independently-controlled spaces with dissimilar cooling and heating load requirements.

Variable thermal load profiles in the spaces, the need for multiple, independently-controlled spaces, and the existence of a common return-air path are three building characteristics that favor the application of VAV systems.

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