|
|
Simulation Research Topics
Investigation of Stability and Convergence Criteria for Integrated Thermal
Zone and HVAC System Simulations – Traditionally, building energy analysis simulations have
been based on Gauss-Seidel, successive substitution equation solving strategies. The new
generation of integrated, split-time step simulations may require more sophisticated
strategies in order to achieve overall convergence and stability. This project
investigates stability and convergence criteria in the new DOE sponsored EnergyPlus
program.
- Development of a Modular, Loop-Based, HVAC System Simulation - The EnergyPlus
HVAC simulation environment is under developed as a hybrid implementation of component
based and system based environments. A ‘fluid loop‘, which is an abstract
representation of a piping or duct system, will provide the structural framework
characteristic of system based models. HVAC components will be described and connected to
the loop in the simulation input and will provide the flexibility characteristic of
component based models.
- Simulation of Ground Loop Heat Pump Systems - New algorithms for dynamic component
based simulation of ground loop heat pump systems have recently been developed. These
models are being used to study the dynamic behavior of such systems on short and long
timescales. In particular, use of ground loops in conjunction with conventional heat
rejecters—such as cooling towers—in ‘hybrid’ systems is being
investigated.
|
|
