Using HAP software to work out the cooling load calculation

Using HAP software to work out the cooling load calculation

Over the past few weeks, we’ve been introducing a key MEP concept: cooling load. Hot on the heels of our outline of the cooling load calculation, next up is our very short introduction to HAP software. This is a key tool for crunching the numbers to work out the cooling load calculation quickly and efficiently, and model different scenarios to refine designs.

These calculations are vital to the energy efficiency of the building, as today, a major component of a building’s electricity consumption is the HVAC system. Hence, the design and development of this software have been essential to accurately estimate the cooling load calculation quickly and efficiently. Previously, this task was lengthy and tedious. Now, HAP has changed everything – here’s how.

How does HAP software work?

Hourly Analysis Program or HAP software uses the Carrier data book based on the cooling load transfer and solar heat gain factor method. This programming language is the foundation of a database constructed using Visual Basic 6.0 and Microsoft Access. These algorithms crunch the data input as per the building’s blueprint and output the cooling load calculation in a results sheet. According to research, these models are approximately 98.1% accurate.

Who is this software useful to?

We’ve already mentioned MEP engineers, but HAP software is useful to other players in the construction supply chain. Consultants, contractors, HVAC component manufacturers, facilities engineers, and others can use the tool to analyse the effect of their design or product on the cooling load calculation. 

It’s also particularly useful for green building design. The software’s 8760 hour energy modelling capabilities can quantify whether or not the design complies with various green building standards all over the world.

What is HAP useful for?

HAP software is a powerful tool to design systems, right down to the smallest component. This means it’s applicable in a variety of builds, including commercial buildings of any size. HAP software can refine the design of variable refrigerant flow (VRF) central air handlers, WSHPs, GSHPs, fan coils, chilled water and hot water plants, and many types of constant volume and VAV system controls.

It’s also useful for retrofits or energy conservation work. With this tool, MEP engineers can analyse the variables in an existing structure in order to choose the most efficient HVAC system possible. This is essential as we work towards making the whole built environment more environmentally friendly.

Broader digital integration in MEP

Together with broader design programs like BIM and CAD, HAP software is an essential component of digital integration in MEP design. With these tools, engineers can seek to make buildings more efficient, and subsequently, more sustainable. This multidisciplinary software will play a key role in ensuring buildings new and old are as efficient as they can be, saving on carbon emission and, as an added perk, money. 

Learn more about DJHC’s sustainability-focused MEP design in our case studies section, including Passivhaus projects, energy-efficient public housing, and more.




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