01832nas a2200157   4500008004100000245015100041210006900192260001200261300001200273490000700285520123900292100001801531700001601549700002001565856008901585       2010                        eng d00aCo-simulation for performance prediction of integrated building and HVAC systems - An analysis of solution characteristics using a two-body system0 aCosimulation for performance prediction of integrated building a  c08/2010  a957-9700 v183 a<p>Integrated performance simulation of buildings and heating, ventilation and air-conditioning (HVAC) systems can help in reducing energy consumption and increasing occupant comfort. However, no single building performance simulation (BPS) tool offers sufficient capabilities and flexibilities to analyze integrated building systems and to enable rapid prototyping of innovative building and system technologies. One way to alleviate this problem is to use co-simulation to integrate different BPS tools. Co-simulation approach represents a particular case of simulation scenario where at least two simulators solve coupled differential-algebraic systems of equations and exchange data that couples these equations during the time integration.</p><p>This article analyzes how co-simulation influences consistency, stability and accuracy of the numerical approximation to the solution. Consistency and zero-stability are studied for a general class of the problem, while a detailed consistency and absolute stability analysis is given for a simple two-body problem. Since the accuracy of the numerical approximation to the solution is reduced in co-simulation, the article concludes by discussing ways for how to improve accuracy.</p>1 aTrcka, Marija1 aHensen, Jan1 aWetter, Michael  uhttps://simulationresearch.lbl.gov/publications/co-simulation-performance-prediction