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HAP v4.5 Expands LEED® and Quick Energy Analysis Features
 
 
 
  • Even Easier LEED® Reports
 
 
 
  • Faster Energy Analyses
 
 
 


HAP Continues as a Premier Full-Fledged System Design Tool

LEED® EA Credit 1 Analysis Gets Even Easier with HAP v4.5
Building upon features first introduced in v4.4, HAP v4.5 provides enhancements designed to make you even more productive conducting LEED 2009 and LEED NC 2.2 Energy and Atmosphere Credit 1 analyses. Specific labor-saving enhancements in v4.5 include:
MORE: click here for information on the LEED productivity features originally introduced HAP v4.40.


Project Preferences for LEED&Reg and ASHRAE 90.1
The Project Preferences feature was expanded to allow specification of the Energy Standard (ASHRAE 90.1-2007 or 90.1-2004) and the LEED Rating System (LEED 2009 or LEED NC-2.2) which apply to the current project. HAP automatically adapts its calculations and report formats to your specified preferences.

The Energy Standard preference affects the Appendix G baseline fan power allowance calculations and the automatic assignment of ASHRAE 90.1 minimum equipment efficiencies.

The LEED Rating System preference affects the format and content of the LEED EA Credit 1 Summary Report (see next section for details).


LEED® EA Credit 1 Summary Report
In HAP v4.5, the LEED Summary Report has been revised to adapt its format and content to your stated project preference for LEED Rating System. When using LEED 2009 for a project, the format mimics the key tables from the EA Prerequisite 2 on-line submittal template. This is where Credit 1 energy analysis results are submitted for LEED 2009. When using LEED NC-2.2 for a project, the report format mimics the key tables from the EA Credit 1 on-line submittal template.
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This report provides significant labor savings by:
• Eliminating labor needed to assemble the energy consumption, demand and cost data from separate reports.
• Facilitating quick, efficient evaluation of energy use, demand and cost performance.
• Facilitating quick evaluation of window-to-wall ratio, unmet load hours and process cost or energy use issues.
• Streamlining effort needed to enter data into the LEED on-line submittal templates. By formatting data in the same manner as the on-line template, data can be easily transferred from the report into the submittal template.


ASHRAE 90.1 Minimum Equipment Efficiencies
HAP v4.5 adds a new feature for automatically assigning equipment efficiency based on ASHRAE Standard 90.1 minimum efficiency requirements. This can be a useful, time-saving feature when modeling the baseline building where equipment must comply with prescriptive requirements for minimum efficiency.

With this feature, you select the "ASHRAE 90.1 Min Eqpt Efficiency" option instead of directly entering performance data for the equipment such as an EER or compressor kW.
Building duplication feature
During simulations, the program will automatically determine the required efficiency (EER, SEER, COP, HSPF, or efficiency as applicable), based on the equipment type, heating type, equipment capacity and the Energy Standard (90.1-2004 or 90.1-2007) specified for the project. This feature applies to all DX cooling, heat pump heating and furnace heating equipment types.

Providing this feature eliminates the multi-step procedure of first determining equipment peak capacity, then determining efficiency from the ASHRAE 90.1 tables, entering the value and then running simulations. Now you can simply choose the "ASHRAE 90.1 Min Eqpt Efficiency" option and let the program automatically take care of all the details.


Baseline Fan Power Allowance Calculation
For projects using ASHRAE 90.1-2007 as the preference for Energy Standard, HAP v4.5 also automates the baseline fan power allowance calculation defined in Standard 90.1-2007 Appendix G, section G3.1.2.9. You simply select the "90.1 App G Fan kW" option for supply fan performance in your baseline air system. A new pop-up input screen is provided to enter data for calculating the fan power adjustments mandated in 90.1-2007. HAP will then automatically perform the full baseline fan power calculation during the energy simulation.Baseline fan power calculations

For projects using ASHRAE 90.1-2004 as the energy standard, HAP continues to offer the option for automatic calculation of the baseline fan power allowance per 90.1-2004 that was available in HAP v4.4.


LEED Style Unmet Load Hours
ASHRAE Standard 90.1-2007 added a definition to clarify the meaning of the cooling unmet load hours and heating unmet load hours which
must be tabulated in an Appendix G
LEED unmet load reports
analysis. As a result HAP v4.5 adds calculations to tabulate unmet loads for the LEED Summary report according to this new definition.

A key concept in this new definition is that a particular hour of the year can result in no more than one cooling unmet hour and one heating unmet hour regardless of how many zones have temperatures out of range.

In many situations, this new definition results in a reduction in unmet hours versus those reported in HAP v4.4, thereby making it easier to comply with the limits on unmet load hours.


Auto-Derivation of Compressor kW from SEER and HSPF
HAP v4.5 adds features for defining performance for DX cooling equipment in units of Seasonal Energy Efficiency Ratio (SEER) and for heat pump heating equipment in units of Heating Seasonal Performance Factor (HSPF). These ratings are used for certain types of small capacity split or packaged air conditioning and heat pump equipment.Auto-derivation of seers

When SEER or HSPF is defined, HAP internally converts the ratings to an equivalent full load EER or COP. Then, using the same methods employed in HAP v4.4, the EER or COP is converted to full load compressor and OD fan kW values for the energy simulation.


Quickly Screening Designs with HAP v4.5 Wizard Features
The way we design buildings is rapidly changing today. The desire to create sustainable designs, achieve LEED certification and improve project efficiency through Building Information Modeling (BIM) are fostering increased collaboration among participants early in the project lifecycle. A key element in optimizing designs early in the project is the ability to quickly screen design alternatives, comparing energy use or energy cost, to identify designs with the greatest potential for energy efficiency or for LEED EAc1 points. HAP v4.5 supports this work through its expanded "wizard" features that allow energy simulation models to be generated and compared in a matter of minutes.

The "wizard" features in HAP v4.5 guide you through the process of selecting weather data, creating a building and its HVAC systems, and defining utility rates. The wizard asks a short series of high level questions about each type of data. Based on the high level inputs, the software applies intelligent defaulting to automatically construct a complete, detailed virtual model for simulation. With this approach data for a complete energy analysis can be rapidly configured. Specific wizard features include:
  • New for HAP v4.5:   a Weather Wizard for quickly selecting weather data either by (1) clicking on map images to select region, country/state/province and city, or (2) selecting from drop-down lists.
  • A Building Wizard for creating a building thermal model. Define the building footprint and zoning, the number of floors, the envelope assemblies and the space usage type, and the program then automatically generates a set of detailed space definitions for the entire building.
  • An Equipment Wizard for configuring HVAC equipment scenarios. Specify the equipment type, key features and components and its configuration, and the program then automatically generates a set of air system, plant, chiller, cooling tower and boiler definitions for the building.
  • New for HAP v4.5:   a Utility Rate Wizard for rapidly inputting electricity and fuel prices. Simple pricing data for electricity and fuels can be entered on a single input screen. For defining more detailed electric pricing structures, the wizard guides you through the process, eliminating much of the uncertainty normally facing users when entering this data.
  • A Full Wizard Session feature ties all four wizards together so you can create 100% of the data needed for an energy analysis all at one time.


Weather Wizard
(NEW in HAP v4.5)
The Weather Wizard helps you quickly select weather data for a project.

The single Wizard screen allows you to click on map images to successively select the region, country, province or state, and then the city.

As an alternative, data can be selected via drop-down lists at the bottom of the input screen.

Based on your selection, HAP automatically configures a complete set of design and simulation weather data for the location.
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Building Wizard
The Building Wizard helps you rapidly create a thermal model of a complete building.

The first Wizard screen asks high level questions about the building type, the footprint shape, size and zoning, and the number of floors. A building footprint diagram helps you visualize the building you're creating. Summary data provides instant feedback on the floor area, wall area and window area for the building.
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The second Building Wizard screen allows definition of the envelope assemblies, internal loads, ventilation and infiltration.
• Assemblies can be selected from a list of default types, or custom assemblies you previously created.
• Schedules for internal loads can be selected from a list of typical schedules from ASHRAE Standard 90.1-2004 or custom schedules you previously created.
• Ventilation requirements can be defaulted from one of the ASHRAE Standard 62 or 62.1 editions based on space usage type. Projects can be configured using Standard 62-2001, 62.1-2004 or 62.1-2007 data.
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Finally, when you press Finish, HAP uses these high-level inputs to generate a set of detailed space definitions for the entire building. Data that could take hours or even days to create manually can be generated in just a few minutes with the Building Wizard.


Equipment Wizard
The Equipment Wizard helps you quickly generate HVAC equipment scenarios for your analysis. The wizard consists of 1, 2 or 3 screens depending on equipment type, plus optional screens for modifying lower level defaults.

The initial wizard screen defines the equipment type, heating source, air-side system type and configuration (e.g., one AHU per floor) and key airside features such as economizer, DCV, and ventilation reclaim.

A system diagram in the lower half of the screen updates with each input to give you immediate visual feedback on the system you are configuring.
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For chilled water applications, the second wizard screen is used to define the chilled water plant.

Inputs define the number of chillers, chiller type and full load performance along with key features such as the chilled water distribution system type, reset controls, cooling tower fan controls and waterside economizers.

A diagram in the lower portion of the screen updates with each input to provide visual feedback on the plant you are configuring.
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For hot water or steam applications, a third wizard screen defines the heating plant characteristics.

Inputs include the fuel type, boiler efficiency and hot water distribution system type.

A diagram in the lower portion of the screen updates to provide visual feedback on the plant being configured.
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Finally, when you press Finish, HAP uses these high-level inputs to generate detailed definitions for the air systems, plants, chillers, cooling towers and boilers, as necessary. For example, if the screens above are being applied to the four story building created in the Building Wizard, HAP will automatically generate four chilled water VAV air systems with hot water heat, one chilled water plant with two chillers and two cooling towers, and a hot water plant with a natural gas boiler, and then link all the components together. Data is ready for use in energy simulations, or can be adjusted before running calculations.

Equipment Wizard can be used to configure scenarios involving:
• Rooftop units
• Split DX AHUs
• Chilled Water AHUs
• Self-Contained Units
• Hydronic Fan Coils
• DX Fan Coils (PTACs, PTHPs)
• Water Source Heat Pumps
• Ground Source Heat Pumps

Further a variety of CAV, VAV and VVT air system types are offered. Heating types include electric resistance, heat pump, fossil fuel, hot water and steam.

When using the Full Wizard Session to create multiple HVAC scenarios, features for copying and modifying scenarios are offered so you can quickly create variations of the same base scenario.


Utility Rate Wizard
(NEW in HAP v4.5) The Utility Rate Wizard streamlines the entry of pricing information for electricity and fuels.

When using flat prices, such as average price data from the Energy Information Agency (EIA), prices for electricity and all fuels can be entered on a single input screen.
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On the other hand, if you need to model a detailed electric rate, the wizard guides you through the input process, first asking high level questions about type of energy charge and demand charge used, and whether seasonal or time of day pricing is used. The wizard then automatically configures the energy and demand price tables so you only need to input your prices and block sizes (if applicable). This wizard approach eliminates much of the uncertainty users normally face when defining this data.
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HAP Continues as a Premier Full-Fledged System Design Tool
 
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