Importance of the Heat Load Calculations - Part 1

Written by:  • Edited by: Lamar Stonecypher
Published Nov 27, 2008

The heat load calculations play vital role in all aspects of the air-conditioning systems of large buildings. It affects the size, type, and location of the airconditioner systems.

Importance of the Heat Load Calculations

The importance of the heat load calculations can be understood from the fact that right from the designing of the building itself, the HVAC designer works closely with the building architect to making recommendations for the locations of the various air-conditioning systems of suitable sizes. Before the actual construction of the building the architect has to design the building and with them the HVAC designer makes important recommendations that affect the building designing large way.

Let us see some importance of heat load calculations:

1) Air-conditioning system of right tonnage: After carrying out the heat load calculations the HVAC designer recommends the air-conditioning system of proper tonnage that would meet the cooling requirements of all the rooms of the building. If the heat load calculations are not carried out, the person may not employ air-conditioning system of proper size. If the air-conditioning system of the larger size is fitted, it will lead to high initial as well as high running cost of the system. If the air-conditioning system of smaller size is fitted, it will lead to under-cooling of the rooms and the very purpose of installing the air-conditioning system is lost. After carrying out the heat load calculations, the HVAC designer recommends air-conditioning system of proper size that will have lowest possible initial cost and running cost and also produce sufficient cooling effect.

2) Air-conditioning system of right type: There are various types of air-conditioning systems. After carrying out the heat load calculations, the HVAC designer recommends the air-conditioning system of proper size for your application. Depending on the total heat load on the building they will recommend window, split, packaged or central air-conditioning type of system.

3) Avoid the breakages in the room: The heat load calculations carried our prior to the actual construction of the room helps decide the location of the proper size and type of the air-conditioning system to be fitted inside the room. If this decision is taken after the construction of the room, you will probably have to carrying out lots of modifications in the room thus destroying the aesthetics and ergonomics of your favorite room.

Deciding the air-conditioning system of proper size and type in advance will also help in laying out the concealed copper tubing connecting the indoor and outdoor unit of the air-conditioning system so there won’t be any hanging or visible shabby looking copper tubing that could affect the looks of your beautiful walls of the room painted with expensive paints or wall papers.


Comments

Showing all 11 comments
 
Anadinath Sharma Jul 23, 2010 12:46 AM
formula to calculate heat load??
hello!!
please give me the formula to calculate heat load for my TG building.and specify the units and unit conversion for it.
salahuddin Jun 28, 2010 6:40 AM
Heat load calculation
Hi,
How to calculate heat for heating mode(winter),please suggest or send me format ,
Thanks,
Salahuddin
Furqan Jun 28, 2010 4:56 AM
HVAC BOOKS
Dear Sir,

Please suggest me some good HVAC books available in indian market.


Thanks & Regards,
Furqan
abhishek patel Apr 1, 2010 2:40 AM
hvac job
plz send me all detail about hvac.. plz send me the capacity of chiller. ?( calculation )
shahid seraj Feb 12, 2010 9:14 PM
heat load calculation
please send me heat load calculation formula
thanks and regards
shahid seraj
Haresh Khemani Dec 18, 2009 9:52 AM
HVAC
Dear Hemish,

I have explained the heat load calculations in details here: http://www.brighthub.com/engineering/mechanical/articles/52621.aspx

You can download the template and perform the heat load calculations very easily.
HEMISH MATADEEN Dec 17, 2009 6:17 PM
HVAC
AM CONFUSE ABOUT THE HEAT LOAD FORMULA CAN U GIVE ME A WEBSITE WHERE I CAN FINE IT PLZ THANK I NEED TO CALCULTE THE HEAT LOAD OF A RESTAURANT
m.salahuddin Nov 8, 2009 10:57 AM
manual duct calculation
Hi friend,
I need to know the procedure of duct calculation manually and through software
ADU OLUWASEUN MATHINS Nov 3, 2009 2:18 AM
manual duct calculation
please and please tell me the procedure for duct calculation
Haresh Khemani Aug 31, 2009 3:27 AM
Manual duct
Hi Shadab,

You can find the procedure for duct design calculations in any air conditioning reference book. Its not feasible to explain the whole procedure in this forum.

Thanks,

Haresh
shadab Aug 30, 2009 11:19 AM
manual duct calculation
tell me he procedure of duct calculation,manually
 
blog comments powered by Disqus
Email to a friend