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Carrier’s new hourly analysis program (HAP) software, version 4.90, includes new energy modeling features for a range of heat recovery plants. Carrier, the world’s leader in high technology heating, ventilating and air-conditioning solutions, is a part of UTC Building & Industrial Systems, a unit of United Technologies Corp. The latest enhancement to Carrier’s eDesign™ Suite of software tools, HAP v4.90 represents the next step in Carrier’s drive to deliver the most reliable and energy-efficient HVAC solutions for commercial buildings.

Design Master HVAC - Design Master HVAC is an integrated HVAC building design and drafting program for AutoCAD. Compare favorable with other loads programs such as Elite CHVAC, Carrier HAP, Trane Trace, and Carmel Loadsoft.

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Its new features allow evaluation of the annual energy performance of five common types of heat recovery plants using water-cooled chillers and two types of heat recovery plants using air-cooled chillers. In addition, HAP supports the U.S. Green Building Council’s LEED® rating system by calculating building energy performance for the energy and atmosphere “minimum energy performance” prerequisite and the “optimize energy performance” credit. “After 40 years of steady improvement in building energy efficiency, engineers and owners are beginning to change their focus from maximizing component efficiency to maximizing overall system efficiency,” said Greg Alcorn, vice president, commercial sales and marketing, Carrier.

“Heat recovery represents a promising strategy for elevating system efficiency, and HAP v4.90’s new features play a key role supporting application of heat recovery systems in building projects.”.

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We use Wrightsuite Universal in our office. It uses the ACCA Manual 'N', or the ASHRAE methods, Radiant Time Series and the traditional method.

It has a graphical interface where you can load a floor plan and trace your different rooms or zones into the program directly. Its OK for medium sized buildings, but for larger spaces the graphical interface is tedious as you cant zoom to see the extents of your building much beyond 150' It's the best program I've seen though, much simpler and easier to use than others mentioned. There residential programs are good too.

They have worked out a lot of bugs in their latest release and their technical support is pretty good. RE: Cooling and Heating Load Calculation Software (Mechanical). We use Elite Chvac 7.1 as mentioned above. It is good for loads only. Now that we are doing simulations we also have Trane Trace 700 and that is all half our office uses now. I have more complaints with the simulation portion, but for loads my biggest complaints are how windows are input, it has no window type option, so each wall needs window are defined.

Trace has a nice 62.1-2004 ventilation rate calculation option that saves me time from having to do the calcs on a separate spreadsheet that we had to do when we only had Elite. RE: Cooling and Heating Load Calculation Software. Well, I'm not quite sure what you are asking me, but the program is a load calculating program. So I guess the answer to your question is yes. That is exactly what I use it for. Now, it might also be able to do an energy analysis and stuff, but I use it for load calculating. The analysis is performed the same was for commercial and residential.

So it doesn't really prompt you for what the analysis is for. But you can input glass types, and wall types that are already in the program or you can make your own. I've used Trane and Chvac as well and my preference is HAP.

If you have any more specific questions about it let me know. I hope I answered your questions. RE: Cooling and Heating Load Calculation Software (Mechanical) 6 Apr 09 21:03. Hepa, What is different about calculating the residential loads than commercial loads?

I input my walls, roofs, windows the same. The lighting and occupancy schedules might be different, but I use HAP to calculate residential loads all the time. I'm not sure why a particular program that can calculate commercial building loads wouldn't be able to calculate residential loads. Maybe you are talking about a systems analysis with residential type furnaces and stuff. I just model the system as a constant volume roof top unit in that case. What else am I missing? RE: Cooling and Heating Load Calculation Software (Mechanical) 10 Apr 09 11:10.

If price is a factor you can try eQuest. It is energy simulation software that is available for free download. However you may have difficulty in finding the load information you are looking for as it tends to produce thousands of pages of reports in the detailed output. The simplified graphical outputs may help though. Find it here: PS. I normally use Carrier HAP for both residential and commercial load calculations. For quick energy modelling I use eQuest.

RE: Cooling and Heating Load Calculation Software (Mechanical) 19 Apr 09 20:43. The problem with software is that many people using them have little knowledge how to calculate heating and coolimg loads and consequently these people will have no 'feel' on their results.

In MA you can download worksheets that allows you to input initial conditions and proceed step by step with the calculations. Once you understand the formulae, than you can appreciate the value of such sofware. Using these worksheets for resential,commercial and light industrial is a good place to start before embarking on larger projects.

RE: Cooling and Heating Load Calculation Software (Mechanical) 23 Apr 09 08:29.