Heat Load Calculation of Honey Storage Room

If you already have your heater, you seem to have put the cart before the horse? Your heat load would have to be calculated with more than cu meters..and if you have no curtains(air or vinyl) then what's the point? Does the honey have to be kept warm for some reason?

Yep, if the heater/cooler is already sized an worked then get a little cfm fan meter and measure the cfm requirements.

I'm guessing, though, that that's not an option here. I suggest you first look in the back of your Thermo book. There's a table for thermodynamic and heat transfer properties of specific foods. I'm thinking that's where you'll get the first set of data that you need for honey.

Then you set up on the energy conservation equation and make sure to balance the heat transfer (air convection) in with heat transfer out (internal energy of the honey)...

If this isn't homework then I'm sorry, but I'm just curious how you know the temperature of water in and out of the cooler but you can't get a quick estimate of the cfm.

Does the honey have to be kept warm for some reason?

Honey has to be warm for it to pour (in a cold state it is like a brick). Additionally (unlike other solids or liquids) it is a pain to pour because it is a great thermal insulator and takes ages to transfer the heat all the way through, so if you want to pour it you need the morning to slowly heat the container up from the outside in.

For small applications electric or water heating jackets are placed around 40 gallon drums of honey which slowly heat the honey all the way through so it can be poured. This application may be a larger honey storage application.

Never mind. Just an Engineer covered it.

Had a chance to do a little moer thinking on this question and there are heaps of questions that require additional data.

Basically, you will need to find out/estimate at least the following.

What is the thermal efficiency of the building if it were sealed?

What is the air exchange with the door open? (and any other potential air leaks)

What are the ambients inside and outside? (Delta "T" across the structure, and maybe even across each wall since a sunlit wall will have a different response to a shaded wall.)

What other heat sources are inside the facility? (like powered forklifts, fans, lights and so on.)

But from what I can deduce, the over-riding factor will be how much honey is moved in and out and what temperature is that at. Your storage volume is around 2100 cubic m (and with air density around 1.2kg/m cubed you have 2.4 tonnes of air inside) but you claim 1000 barrels at 250kg each (that's 250 tonnes). Those barrels will act like great big heatsinks or heat sources at a factor 100 times the air mass inside the storage.

By the way, welcome to the forum site. I hope you enjoy your visits.

It is a good practice to consult HVAC expert to select suitable ventilation ?HVAC equipment for your requirement. You can provide more details like outside condition in all seasons ( DBT& RH). Does the inside humidity to be controlled?. Materials used for room. These are few information you need to provide to estimate the heat load .

Is the purpose of the cfm to cool the room?

Can you supply more information please.

You need to calculate the thermal energy stored in the honey and hot water as sensible heat using:

q = V p Cp dt

= m Cp dt

where:

q = sensible heat stored in the honey, water (J, Btu)

V = Volume of honey, water ( cubic meters)

p = density of honey, water (kg/cubic meter)

m = mass of honey, water (kg)

Cp = specific heat capacity of honey, water (J/kg x degree C)

dt = temperature change ( degree C)

Once you calculate all the heat of the honey and water to be removed Plug the heat number into the same equation but for the rest use the properties of air and solve for the volume of air you need.