HVAC System Design Software

These programs are written by HVAC system engineers and are supported by industry experts with years of field application experience.

eDesign Suite Program Capabilities

PROGRAM FUNCTION
Peak Load Calculations HVAC System Sizing Energy Modeling: Detailed Design Energy Modeling: Schematic Design Lifecycle Cost Pipe Sizing
HAP (Hourly Analysis Program)            
Block Load            
Building System Optimizer            
Engineering Economics            
System Design Load            
Refrigerant Piping            

eDesign Suite Programs At-a-Glance


HAP - Hourly Analysis Program

HAP is a dual function program - full-featured load estimating and system sizing for commercial buildings plus versatile hour-by-hour energy and operating cost analysis. Thermal loads are calculated using the ASHRAE®1-endorsed Transfer Function load method. System components are sized using the System-Based Design concept, which applies the ASHRAE-endorsed Heat Extraction Methodology to link system performance to building thermal loads. Energy analysis uses full 8760 hours-per-year analysis to evaluate the operation of a wide variety of air handling and plant equipment. Operating costs are computed based on energy use and demand charges. A wide range of tabular and graphical outputs is available.

Block Load

Combines a full-featured design load estimating program with a simplified user interface. Perfect for engineers and contractors who need to generate loads quickly. Provides all of the sizing and load information needed to design HVAC systems and select air conditioning equipment. Uses the same load calculation method as HAP and System Design Loads. Suitable for both single and multiple-zone projects.

Building System Optimizer

Rapidly compares energy cost performance of HVAC system and equipment designs in commercial buildings. Supports applications in the schematic design phase of projects where multiple designs are being evaluated to identify one or a small group of alternatives with the most promising energy performance. Streamlined user interface allows analyses to be configured in minutes. Building System Optimizer is "powered by HAP" - calculations utilize HAP simulation engines to perform detailed hour-by-hour energy analysis for accuracy and credibility.

Engineering Economic Analysis

Tool used to compare the lifecycle economics of alternative designs for HVAC systems and buildings. The program permits four types of economic analysis studies to be performed (1) simple payback analysis, (2) simple cash flow analysis, (3) private sector lifecycle analysis, (4) public sector lifecycle analysis. All four are bundled in one seamlessly integrated package.

System Design Load

Design load estimating and system sizing for commercial buildings. Load calculations use ASHRAE-endorsed Transfer Function methodology. System components are sized using the System-Based Design concept, which applies the ASHRAE-endorsed Heat Extraction Methodology to link system performance to building thermal loads. Specific system and component sizing for a wide variety of air-handling system types, with up to 100 zones per system. Includes a wide variety of graphical and tabular outputs.

Refrigerant Piping Design

Sizes suction, discharge and liquid refrigerant lines. Performs calculations for either steel or copper piping, and for refrigerants R-134a, R-22, R-502 and R-717. Sizes horizontal lines and single and double suction risers per the ASHRAE Refrigeration Handbook.

1ASHRAE is a registered service mark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.