Room Sensible Heat Factor Line

Sensible heat formula for hvac engineers where does q 1 08 cfm δt come from.

Room sensible heat factor line.

Shf ǭs ǭt. Let us see what these processes are and how they are represented on the psychrometric chart. 95 db 75 wb. Q sr sensible heat load in room kw btu hr.

ǭs sensible heat calculated w ǭt sensible heat latent heat in w the shf line ab in figure 1 is through the room conditions and is parallel to slope line xx. It is defined as the ratio of room sensible heat to room total heat. The sensible cooling of air is the process in which only the sensible heat of the air is removed so as to reduce its temperature and there is no change in the moisture content kg kg of dry air of. 37 by δ h s sensible heat and δ h l latent heat.

This line ab represents all the points that will satisfy the. Sensible heat flow sensible heat is dry heat causing change in temperature but not in moisture content. Theory numerical problems and what ever you required related to mechanical. The room sensible heat factor rshf expresses the ratio between sensible heat load and total heat load in a room.

In this scenario a room to room load calculation has been done on a home. It can be expressed as. Thus if adequate air is supplied to offset these room loads the room requirements will be satisfied provided both the dry and. Mitchell paulus 47 982 views.

75 db 50 rh. Rshf q sr q tr 1. Rshf c p t r t i h r h i 2. The ratio between sensible heat and total heat is known as the sensible heat factor shf.

Room sensible heat factor rshf room sensible heat factor rshf is defined as sensible heat load divided by total heat load in a room. The supply air having conditions given by any point on this line will satisfy requirements of the room with quantity of air supplied different for different points. Sensible cooling and sensible heating are basic psychrometric processes used for various applications. Rshf room sensible heat factor.

In this channel all information related to mechanical field i e. 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.