Figure 1: Building zone loads screen with exterior windows screen.
PowerDOE Structure
PowerDOE has a modular structure that allows sections of the program to be
accessed externally or connected with other analysis tools. For example, its
Review Results module can be used as a stand-alone application for
post-processing DOE-2 results. The PowerDOE structure allows third party
developers to use these modules--including Describe Building, Floor Plan, Zone
Loads, Building Equipment, HVAC, and Central Plant--and the PowerDOE simulation
engine in their applications. PowerDOE will also be linked to the Building Design
Advisor, a multimedia-based, integrated building design support tool being
developed separately at LBNL.
Unlike DOE-2's batch-mode operation, PowerDOE provides an interactive connection between the data input phase and the simulation, allowing the user to perform certain calculations prior to running the entire simulation.
For example, the user interface calls the simulation engine to perform the zone-by-zone peak-load calculations necessary for default HVAC equipment sizing. In this way, as the user passes from the architectural input phase to the HVAC description phase, all loads and the resulting default equipment sizing are visible and all are changeable prior to the energy use analysis.
The program requires a 386- or 486-based PC with a math coprocessor, VGA graphics card, color VGA monitor and 12 megabytes of memory. A SuperVGA (800x600) or a VGA (with 256 or more colors) video card and monitor are suggested for optimal display of the application's graphics. Windows version 3.1 or higher is required.
Figure 2: HVAC system screen.
PowerDOE Library
PowerDOE includes a library of generic, parameterized prototype buildings and
building components that can be altered to create new libraries. The user can
select a prototype by building type (e.g., office, residence, hospital), size
(large medium, small), vintage (pre 1970s, 1970s, 1980s, 1990s), and location.
The prototype can then be altered globally to conform to the desired design.
Global parameters include building size, area, number of floors, shape, usage
breakdown by area percent (entry, office, kitchen), and HVAC configuration.
The initial release of PowerDOE will be available in April 1996. Subsequent releases will include more new features and improvements. Contact the Simulation Research Group for more information on PowerDOE's features and information on obtaining the software.
Fred Winkelmann
Kathleen Ellington
Simulation Research Group
Building Technologies Program
(510) 486-5711; (510) 486-4089 fax
1Participants include: J.J. Hirsch (Hirsch & Associates); F.C. Winkelmann, W.F. Buhl, K.L. Ellington (LBNL); J.S. McMenamin, I. Rohmund, S.A. Criswell (Regional Economic Research, Inc.); A. Bhimani, B. Spurlock (Southern Company Services); D.J. Bornstein (D.J. Bornstein & Associates); K.F. Johnson (Electric Power Research Institute).
This work is funded by DOE's Office of Building Technologies, Electric Power Research Institute, Bonneville Power Administration, Duke Power, Pacific Gas and Electric, Southern California Edison, and Southern Company Services.