Re: Calculating heat load
Hai
I am from mideleast K.S.A
Gentile man do you know any easy methods to calculate heat load for cold room
With Regards
Rajeev
Re: Calculating heat load
as per my calculations and experience you should go for 18432 btu/hr x 2 units at an evp temp of minus 30 deg C. Assumed the average product and average loading conditions.
Re: Calculating heat load
Quote:
Originally Posted by Rajeevcoldtech
Hai
I am from mideleast K.S.A
Gentile man do you know any easy methods to calculate heat load for cold room
With Regards
Rajeev
:) Dear Rajeev
Nothing is easy and shortcut.
if it easy, it comes by experience and may very from person to person.
You may specify your specific application if it is there.
Re: Calculating heat load
Keep the insulation about 0,4 W/m2C. 150 W cooling for every m3 volume will be enough.
Re: Calculating heat load
For calculating the heat load for a Cold Room, there are factors such as the Product to be stored, Incoming Temperature, Cold Room Temperature and wall, ceiling and floor insualtion materials and thickness has to be considered. The best way to go about it is to get a Software and feed in the above datas. There are a number of Softwares available and I would reccommend you to down load the same from www.russellcoil.com or request for a CD Rom at www.heatcraftrpd.com.
With best wishes, Samarjit Sen
Re: Calculating heat load
The best way is to either directly down load the selection software from www.russellcoil.com or request for the software from www.heatcraftrpd.com. These are very easy to use and I presume your purpose would be attained.
Re: Calculating heat load
Hello Abe,
Have you been able to get the Heat Load Calculation for the Cold Room. If not, could you please intimate the product and the quantity to be loaded at what incoming temperature. I will work out the detail load with the unit selection for you should you desire.
With best wishes, Samarjit sen
1 Attachment(s)
Re: Calculating heat load
Hello Abe,
In case you have not as yet got the heat load for your walk in freezer the same should be 28598 BThU/hr with 18 hrs run time at -30 Deg. C Evaporative Temp. I am also attaching the Load Details for your reference.
Re: Calculating heat load
[quote=Dan]Let's not forget
Thank you very much for your information.
It's really a good tools.
Re: Calculating heat load
Quote:
Originally Posted by Samarjit Sen
Hello Abe,
Have you been able to get the Heat Load Calculation for the Cold Room. If not, could you please intimate the product and the quantity to be loaded at what incoming temperature. I will work out the detail load with the unit selection for you should you desire.
With best wishes, Samarjit sen
Semarjit
Thank you for your assistance. Unfortunately that project fell away.
Best Regards
Aiyub
Re: Calculating heat load
the grainger catalog has a page for btu calculations, but im not sure if they go that large
Re: Calculating heat load
Abe
a rule of thumb option, is to calculate outside surface area in feet squared and multiply that by thirteen low temp, by sixteen chiller range (Btu's /hr )They get you in the region of actual for a budget price, do actual calc on specific application to double check loadings. on info earlier posted the load would be 23296 Btus /hr.
Cannot remember the SI factor for metres squared.
cheers Magoo;)
Re: Calculating heat load
I'm seeking a coil selection program to help select coils that will perform in air handling units. Often when selecting an air handling unit there is rarely data readily avalible to schedule pressure drop information. i.e. air pressure across the coil as well as water pressure drop. When scheduling these pieces of equipment it is essential to have this particular information so that fan statics and pump head calculations can be completed. Would anyone happen to know where or if the program exist?.
Re: Calculating heat load
hi everybody how can we calculate spacific heat of flowers vegetables & fruits.should spacific heat & respiration both be taken in considration for heat load calculation.
Re: Calculating heat load
Yes while calculating the heat load, one has to consider the specific heat, latent heat and respiration. In case you get these datas please share with me.
Re: Calculating heat load
Just look in the back of the HRP catalogue cmon guys it aint rocket science ???
Re: Calculating heat load
Quote:
Originally Posted by
philfridge
Just look in the back of the HRP catalogue cmon guys it aint rocket science ???
Not everyone on this forum is from the uk so i doubt if they have a hrp catalogue.
You could always print it off and upload it for them;)
Re: Calculating heat load
Hi Guy Booth,
It appears that you are looking for coils suitable for Chilled Water Coils for Air Conditioning applications. Most of the coil selection programmes do not give the pressure drops of air or water. They will specify the coils model of their make. For getting the pressure drop you have to work it out your self. However you may check the CoilPro of Colmac Coils.