ENERPASS

Detailed building energy simulation program for residential and smaller commercial buildings. ENERPASS calculates the annual energy use for space heating, cooling, lighting, water heating and fan energy. The calculations are performed on an hourly basis using hourly measured weather data. ENERPASS can model up to seven building zones and provides hourly temperature and humidity predictions for each zone. A wide range of HVAC systems can be modelled including make-up air units, heat recovery ventilators, rooftop units, VAV, four-pipe fan coil, and dual duct. The program uses full screen data entry in an easy-to-use format. A typical building model can be generated in one to two hours. In IEA validation studies ENERPASS results compare favorably with other hourly based computer programs.

Keywords

energy performance, design, residential and small commercial buildings

Validation/Testing

N/A

Expertise Required

A general understanding of building construction is required.

Users

Hundreds of builders, architects and researchers primarily in North America.

Audience

Building designers and specifiers can use ENERPASS to design more energy efficient buildings.

Input

Users must enter areas and R-values of walls, windows, etc and the characteristics of the HVAC and lighting systems. The program includes libraries of standard construction assemblies and equipment.

Output

Annual energy use and cost; includes histograms of temperature, humidity and light levels. Hourly results can also be displayed.

Computer Platform

PC-compatible 386 or higher, DOS, Windows 3.1 or 95.

Programming Language

C and FORTRAN

Strengths

Easy and quick data entry. Hourly calculation of results.

Weaknesses

The program is limited to seven zones and cannot handle large complex buildings such as hospitals.

Contact

Company:

Address:

650 Riverbend Drive
Kitchener, Ontario
Canada

Telephone:

(519) 743-8777

Facsimile:

(519) 743-8778

E-mail:

frame@enermodal.com

Website:

http://www.enermodal.com

Availability

ENERPASS is $320. US ($395. CDN). A demo version can be download from their web page.