Room Sensible Heat Factor

Q sr sensible heat load in room kw btu hr.

Room sensible heat factor. Consider 1kg of ice at 00 0 degree to be changed to liqiud at 30 degrees. The room sensible heat factor line can also be drawn on the psychrometric chart without knowing the condition of supply air. Is the ratio of room sensible heat to the summation of room sensible heat and room latent heat. Rshf room sensible heat factor.

The bpf fraction of outside air adds sh load and lh load to the room. By pass factor sensible heat factor room sensible heat factor grand sensible heat factor sensible heat vs latent heat. Guys in this video we will cover psychrometric factor such as. Sensible heat flow sensible heat is dry heat causing change in temperature but not in moisture content.

There is another heat factor called the latent heat. Rth rsh rsh rlh rsh rshf equation 9 2. Q tr total heat load in room kw btu hr 1 can be modified to. However bpf fraction of return air has no effect as it is already at room condition.

Effective room latent heat load erlh rlh bpf x outside air lh. Prashant anand ranjan 513 views. 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. 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.

How to calculate sensible heat factor and by pass factor duration. Room sensible heat factor. Sensible cooling and sensible heating are basic psychrometric processes used for various applications. 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. 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. 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. Let us see what these processes are and how they are represented on the psychrometric chart.

Rshf c p t r t i h r h i 2. Room sensible heat factor rshf room sensible heat factor rshf is defined as sensible heat load divided by total heat load in a room. Adiabatic mixing of two air streams psychrometry. This latent heat results only in hase change.

This ratio is expressed in the following formula.