Kitchen Equipment, heat gain

[MechGuy22]

Does anyone have a good resource (ie. website or excel file etc) that contains latent & sensible heat gain values for kitchen equipment? Both hooded & non hooded...With a usage factor.

Thanks!

 

[MintJulep]

2009 ASHRAE Handbook - Fundamentals, Chapter 18, tables 5A and 5B.

 

[cdxx139]

ASHRAE Fundamentals 2009 18.9 Table 5-E

knowledge is power

 

[cdxx139]

*A-E

knowledge is power

 

[MechGuy22]

Ok, I actually have that on a CD.


Im looking at table 5B. What is you suggestion on how to input this into my load calculation software.

My software just asks me for a latent & sensible input for additional equipment. Lets take the cheesemelter for example.

Cheesemelter:

Rated: 12,300 Btuh
Standby: 11,900 Btuh
Sensible Radiant: 4,600 Btuh
Usage Factor: .97
Radiation factor: 0.39

So if I have two boxes in my load calculation software (sensible,latent) what would you suggest punching in?

Sensible:________
Latent: _____

 

[cdxx139]

Sensible = Sensible Radiant (since most sensible heat will exhaust up the hood).

Latent = (mass of cheese (slugs) * aceleration)
(_______________________________) x
( gravity )


(cheese melt factor x usage factor / radiation factor)

which is usually negligable, so I tend not to calculate.

knowledge is power

 

[MechGuy22]

Ok, so for the sensible in this case it would be 4,600 sensible because there is a hood.

With NO hood it would be 11,900 * usage factor?

 

[317069]

One point I would like to ask about:
when we say unhooded equipment we have two cases:
1- the equipment itself is not directly under a hood but there is a hood in the same space
2- there is no hood at all in the same space

ASHRAE tables provide very good help but you have to read the ASHRAE book too not only tables.