ZAC's Cooling Load Calculation Program is software created for use by consultants, contractors, and designers alike for determining the cooling and heating loads of simple as well as complex building structures.

Based on the latest Cooling Load Calculation procedure by the American Society of Heating Refrigeration and Air-conditioning Engineers (ASHRAE) , the Radiant Time Series - RTS, is a new method derived from the Heat Balance method. It replaces all other non-heat-balance procedures i.e. TFM, CLTD, TETD. The RTS method is based on 24-hour time series which distribute heat gain over time to account for time delay effects. Series coefficients which are called Radiant Time Factors and Conduction Time Factors are derived from the heat balance method.

Click here^ to start the Program

ZAC's CLCP is the first software of its kind that has been developed for use on the internet as well as for use as a standalone application. But more importantly, ZAC' CLCP has been developed as a freeware for the registered users.

If you decide you want to go beyond the psychrometrics and want to select ZAC equipment to suit the AC requirements, this is just a click away.

All you have to do is register as a member of ZAC's E-community (if you have not already done so), and start using the program.

Here below are some of the salient features and capabilities:

• Compact input screens, easy data entry, full help documentation, online help, multi-language, multi system with min/max/default value display.
• Up to 300 rooms and systems / 20 walls per room/ 6 partitions & 6 grounds/ 4 roofs/ 3 lighting/equipment/people levels per room.
• Walls, partitions, roofs and floor area could be entered as parts (up to 4 parts)
• Multi-zone with different thermostat settings.
• Multi-system/single-system calculations
• Graphical display of rooms/zones/ systems tree
• Single Spreadsheet display of all rooms and their data
• Integrated surface area calculators (length & width entry)
• Equipped with many easy-to-view drop-down lists, Libraries, Templates and Tables
• Windows-based/ Menu driven for easy navigation
• Graphical user interface and colorful displays
• Large accessible data base
• Extensive libraries/applications for the Middle Eastern region of West-Asia
• Many useful tools i.e. U-value calculator, Wall generator
• Optional easy equipment selection
• 15 textual and graphical output reports
• Psychometric charts with cooling processes on them.
• Hourly load profiles/analysis