Progetto SIMEA - Automatica - Università degli Studi di Padova

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SIMEA Stato dell’arte energetica degli edifici 1.2.37.6. Output 70 Doc.No 20100610.SIMEA.MR.03 Versione 1 Pre-formatted documentations: Overview, energy balance, heating load, cooling load, summer comfort (percentage of overheating), ventilation, energy use/losses for heating system, primary energy demand. 1.2.37.7. Computer Platform Windows PC with MS Office 1.2.37.8. Programming Language Spreadsheet 1.2.37.9. Strengths Energy design and thermal comfort for high performance buildings, esp. passive houses 1.2.37.10. Weaknesses Multizonal dynamic building simulation for buildings with large glazing areas (solar gains) and/or high need of control.
SIMEA Stato dell’arte energetica degli edifici 1.2.38. PowerDomus 71 Doc.No 20100610.SIMEA.MR.03 Versione 1 PowerDomus is a whole- building simulation tool for analysis of both thermal comfort and energy use. It has been developed to model coupled heat and moisture transfer in buildings when subjected to any kind of climate conditions, i.e., considering both vapor diffusion and capillary migration. Its models predict temperature and moisture content profiles within multi-layer walls for any time step and temperature and relative humidity for each zone, by using the finite-volume approach and the mathematical method developed by Mendes et al. (2002). The use of this method avoids numerical oscillations, since it keeps the discrete equations strongly coupled between themselves, preventing the occurrence of physically unrealistic behaviour when time step is increased and producing a numerically stable method, which is very suitable 11 to be used in building yearly energy simulation programs. Integrated simulation of HVAC systems can be performed for both direct and indirect expansion systems. PowerDomus allows users to visualize the sun path and inter-buildings shading effects and provides reports with graphical results of zone temperature and relative humidity, PMV and PPD, thermal loads statistics, temperature and moisture content within user-selectable walls/roofs, surface vapor fluxes and daily-integrated moisture sorption/ desorption capacity. On-off and PID control strategies can be applied to individual heaters or DX-systems and 1-minute time intervals for schedules can be considered all over. For the floor, the Dirichlet conditions for temperature and moisture content at the lower soil surface or adiabatic and impermeable conditions for deeper surfaces can be considered. There is also the possibility to read temperature and moisture content data generated by the Solum 3-D Simulation model (Santos and Mendes, 2003), which provides spatial distribution of temperature and moisture content in soils for each user-defined time sample. PowerDomus has been conceived to be a very user- friendly software in order to stimulate a larger number of users to use building simulation software. It has been developed in the C++ language under C++ Builder environment using a 3-D OpenGL graphical interface and it is available on the PC platform under Windows 2000 and XP operating systems.
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Progetto SIMEA - Automatica - Università degli Studi di Padova

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