heat load

[Ray Ang SM]

please help,if coldroom are given 8'x10'x8' and all heat loat aready calculate aspect product load was not given should i add in 10% to the total btu.:cool:

[nike123]

please help,if coldroom are given 8'x10'x8' and all heat loat aready calculate aspect product load was not given should i add in 10% to the total btu.:cool:

No, you can not! Main heat load is usually not from cold room walls, floor and roof. That is usually smallest load in calculation.

Try this software (http://www.keepriterefrigeration.com/calcrite/RTcalc1.htm), it could help but, without product load, it is only guessing. So, try to predict product load and play with calculations to see effect on capacity rise.

[icecube51]

i always start whit the product heat load,and work on till i get to the cold room.
then combine all the aspects to come whit the best of solution for the client.

Ice

[US Iceman]

Depending on the use of the cold room the infiltration or product cooling load may be the greater factors.

Adding 10% is only a safety factor to cover minor issues, not major cooling loads.

[smpsmp45]

We consider 10% loading per day( of the total storage capacity). Since this is a very small cold room typically it may require 1.5 TR at -20 room temperature. Generally this is the size for a ice cream distributor in India & we have seen that product load factor keeps fluctuating all the time.
The Incoming temp is considered as -10 deg c for icecream. ( yes it is so!!!)

[sudarmanto]

I'd rather to have a bit of oversize than undersize :)