Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Letent heat of beef at -4'C

Status
Not open for further replies.

MarineHVAC

Mechanical
Joined
Jun 29, 2014
Messages
10
Location
SG
Hi,

Would like to get your advice for the product latent load calculation for beef.
According to ashrae , Latent Load= Mass x ( Latent heat fusion)/ Pull down time. The question is that the when the provision is already freezed at -4"C at arrival. If so can we neglect the latent load?
 
The question you have to ask, Is how much further down are you going to pull it? If you are going to keep it at minus 4C then you will not have a latent load.
B.E.

You are judged not by what you know, but by what you can do.
 
if it is already frozen, you only need to "cool off" sensible heat if you cool it even lower.
 
Look on a psychrometric chart and calculate the difference between -4C and where you are cooling to. Assume the air is saturated in both cases which is mostly true.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top