Survey of the Residential Building for Heat Load Calculations

Once you have understood the various sources of heat in the residential building, we have to now carry out the survey of the building for heat load calculations. The survey of the building involves measuring various dimensions of the building, orientation of the building, and applying various factors to calculate the heat load calculations. With the help of survey one can also decide the best air conditioning system suitable for the building and also the methods to install it.

For the survey of the building the accompanying heat load calculation form has to be used. To carry out the heat load calculations you have to determine all the parameters mentioned in the form, fill them in the form and carry out various calculations, which will eventually help you find the total heat load of a single room. Let us see the various parameters of the building to be surveyed as mentioned in the heat load calculations form. The discussions that follow will explain you all the parts of the form, the survey to be carried out and how to fill the form. For each of the rooms separate heat load calculations form has to be filled. For your convenience the heat load calculations has been attached below, please refer it for all further reading and calculations.

In topmost part of the heat load calculations form you have to fill the basic details like name of the customer, their address, the person who buys the air conditioning system, the person who will install the air conditioning system, estimate number, heat load estimated by, and date. After carrying our heat load calculations you can also fill the details of proposed equipment manufacturer, model, and size of the machine. After the survey of the building you will also be able to fill the details of the direction of the house or room, total floor area for which the heat load calculations are done, and the inside volume of the space that has been surveyed.

After these basic details, you have to fill the design conditions for the room. These are very important and will have a major impact on the total tonnage of the air conditioning system required for the room. In the design conditions space you must note down the outside and desired inside dry bulb and wet bulb temperatures. The difference between the two, as mentioned in the form, has also to be noted.

Now you can come to the lower part of the heat load calculations form and start the survey of the room. For this you should have with you two instruments: the magnetic compass and the measuring tape. The magnetic compass will help you determine the orientation of the room including the directions of the all the walls and the windows. The measuring tape will help you determine all the dimensions of the all the walls, partitions, windows, floor, roof, ceiling etc. If you are ready with these instruments let us carry out the following measurements: