The Actual Room Sensible Heat Factor Line Is

Rshf room sensible heat factor. The room sensible heat factor rshf expresses the ratio between sensible heat load and total heat load in a room. The rshrs have all been averaged together for.

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If for example a room had a total.

The actual room sensible heat factor line is.

Rshf c p t r t i h r h i 2. In this scenario a room to room load calculation has been done on a home. Q tr total heat load in room kw btu hr 1 can be modified to. The room sensible heat factor line can also be drawn on the psychrometric chart without knowing the condition of supply air.

The following procedure illustrates how to plot this line using the calculated rshf the room design conditions the sensible heat factor scale in the upper right hand corner of the psychrometric chart and the alignment circle at 24 c dry bulb and 50 relative humidity. Draw the actual room sensible heat factor line through the room design conditions parallel to the base line in step 1 3 4 fig. Q sr sensible heat load in room kw btu hr. As shown this line may be drawn to the saturation line on the psychrometric chart.

75 db 50 rh. 95 db 75 wb. Effective room sensible heat ersh is the sum of all sensible heat gain that occurs in the room including the gain due to the portion of the ventilation air which is bypassed. Effective room latent heat erlh is the sum of all latent heat gain that occurs in the room including the gain due to the portion of the ventilation air which is bypassed.

It can be expressed as. Rshf q sr q tr 1. Assuming a room to room load calculation has been done on a building the next step in utilizing the psychrometric chart would be to plot out the room sensible heat ratio lines for each zone. Room sensible heat ratio rshr is the ratio of sensible heat to total heat including latent for a room or zone.