Room Sensible Heat Factor

Q tr total heat load in room kw btu hr 1 can be modified to.

Room sensible heat factor.

Rshf q sr q tr 1. Rshf room sensible heat factor. Sensible heat is heat exchanged by a body or thermodynamic system in which the exchange of heat changes the temperature of the body or system and some macroscopic variables of the body or system but leaves unchanged certain other macroscopic variables of the body or system such as volume or pressure. Guys in this video we will cover psychrometric factor such as.

Room sensible heat factor. 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. Rth rsh rsh rlh rsh rshf equation 9 2. The room sensible heat factor rshf expresses the ratio between sensible heat load and total heat load in a room.

The supply air to a conditioned space must have the capacity to offset simultaneously both the room. Adiabatic mixing of two air streams psychrometry. The bpf fraction of outside air adds sh load and lh load to the room. However bpf fraction of return air has no effect as it is already at room condition.

Q sr sensible heat load in room kw btu hr. How to calculate sensible heat factor and by pass factor duration. Thus effective room sensible heat load ersh rsh bpf x outside air sh. This ratio is expressed in the following formula.

This latent heat results only in hase change. By pass factor sensible heat factor room sensible heat factor grand sensible heat factor sensible heat vs latent heat. Effective room total heat erth is ersh erlh effective sensible heat factor eshf is the ratio ersh ersh erlh cooling coil in an air conditioning system air gets cooled when it passes through the cooling coil. Effective room latent heat load erlh rlh bpf x outside air lh.

The room sensible heat factor line can also be drawn on the psychrometric chart without knowing the condition of supply air. Sensible heat flow sensible heat is dry heat causing change in temperature but not in moisture content. Room sensible heat factor rshf room sensible heat factor rshf is defined as sensible heat load divided by total heat load in a room. It can be expressed as.

Sensible heat is the amout of heat absorbed or rejected by a system resulting in the increase or decrease of the temperature of the system. There is another heat factor called the latent heat. Is the ratio of room sensible heat to the summation of room sensible heat and room latent heat.