Heat Load Calculation Software
Dec 6, 2006 - I would like to hear anyones opinion on a good heat load calculatiion software. I am at a point where I could go into buisness for myself, but do not have the time to go back to school to learn man j /d. I have 7 yrs in the buisness and mainly do change outs. I am a Firefighter and really just want to use hvac.
A properly sized residential heating and air conditioning system is one that closely matches the capacity of a home on a typical design day for the city or town that the home is located in. Oversizing a system will result in the home being cooled faster, but it also means that the system will not run as long.
- Infiltration: Enter the cubic feet of the house (area x average ceiling height). The program will calculate the heating and cooling loads due to infiltration based on the tightness selected in Step 1 10. Appliances – A default value of 1200 btuh is programed into the software. If you wish to change the value, click.
- QwickLoad uses the ASHRAE TFM (Transfer Function Method) algorithms combined with a screen interface that provides building load calculations. It includes a Duct Sizing Program and supports IP and SI units. QwickLoad Residential 7.0 provides heat gain and heat loss calculations for up to 10 zones.
Turning on and off frequently (known as “short-cycling”) not only decreases the expected life span of the equipment, but it also decreases the system’s ability to dehumidify the air since the indoor coil does not remain cold long enough to cause condensation. In order to determine the size of the air conditioner required, a load calculation must first be performed on the home.
A load calculation is a complex set of mathematical equations that are used to determine the sensible cooling, latent cooling, and heating BTU values required to deliver maximum comfort and efficiency. The first step in performing a load calculation is to calculate the net surface area and orientation of all walls, ceilings, floors, and glass that are exposed to unconditioned spaces. This can be done with a traditional tape measure or a laser distance-measuring tool sold at most home improvement stores. The second step is to inspect and identify the type of building materials used in the construction of the home, including style of windows, skylights, doors, roofing, flooring, and siding. This information is used to obtain the equivalent R-values, u-values, and solar heat gain coefficients (SHGC) needed in the final load calculation.
Commercial Heat Load Calculation Software
The final step is to combine the surface areas and building material info to calculate the sensible, latent, and heating loads for all opaque panels. The opaque panel loads are then combined with the duct, infiltration, ventilation, piping, and internal loads (from occupants and appliances) to determine the total load.
This final step can be done by hand using reference tables or using sophisticated software. There are two primary calculation methods used to determine the HVAC load of a home. The simplest method is to perform a “block load” assessment (also known as “whole house”), which only looks at the opaque panels and glass exposed to the elements. A more complex method known as as “Room-by-Room”, breaks down the load to each room.
Room-by-Room calculations are more accurate and also allow the practitioner to determine the cfm requirements for each room. The most widely accepted method to perform whole-house or room-by-room calculations is to use the ACCA Manual J process. An ACCA approved manual J uses well-documented tables and building codes to determine the heating and cooling requirements for the home. Why is Cool Calc Manual J free when others charge? We are not a software company. The Cool Calc suite of tools were developed by HVAC distributors to help facilitate the sale of heating and air conditioning equipment. Can I use Cool Calc Manual J for new construction?
Yes, a user can skip the tracing step and enter all lengths and building materials manually. Similar to how other Manual J programs on the market. Can I integrate Cool Calc Manual J into my website? Contact us to discuss possible API integration opportunities. Do you sell homeowner information? No, we do not share or sell homeowner information. However, we do track user behavior and encourage users to read our full privacy policy.
Free Heat Load Calculation Software
Can I use your software on Apple and Android devices? Cool Calc Manual J is web-based and therefore works on all devices including Windows, Mac OS, Android, iPhone, etc. Do you offer technical support? Because our software is offered at no charge, there is limited technical support.
We will address software bugs, but users should refer to our and for training.