Percorrer por autor "Bernardo, H."
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- Indoor environment and energy efficiency in education buildings - part 2: Energy simulationPublication . Dias, M.; Bernardo, H.; Ramos, Joao; Egido, M.This paper is the second one in a series of two papers presenting the main results obtained, which are analyzed in view of the present RSECE Portuguese national regulation. The goal of this paper is the determination of the energy saving potential that can be obtained through computational simulation, using DesignBuilder/Energyplus software. It presents the simulated values of the impact on the energy consumptions of a building, caused by heating, cooling, shading and artificial lighting control systems set to maximize the use of daylight and its effect on the building energy performance labeling. The work developed was based on a real case-study of a school building located in central Portugal. The basis for the work was a computational model of the building, adequately calibrated and validated using field measurements. The monitored data was used to evaluate Indoor Environmental Quality (IEQ) conditions and to calibrate a number of thermal simulation models of the building.
- Indoor environment and energy efficiency in school buildings - part 1: Indoor Air QualityPublication . Dias, Maria João; Bernardo, H.; Ramos, João; Manzano, Moisés EgidoThis paper is the first one in a series of two papers presenting the main results obtained in a School Building, which are analyzed in view of the actual Indoor Air Quality (IAQ) Portuguese national regulation. Measurements were carried out in one building, ventilated by mechanical system to evaluate IAQ and thermal comfort parameters. Direct measurements were made with portable monitoring data loggers and in some longterm measurements. The students assessed through questionnaires the IEQ parameters felt in the classrooms a few moments before the end of the class. The IAQ and thermal comfort conditions in higher/university schools buildings has been found to be poor because of the high density of students in class rooms. In particular, the IAQ is a significant issue for these buildings in order to be healthy and comfortable for learning performance of students.
- Predictable impact of lighting control on the energy consumption of a building through computational simulationPublication . Bernardo, H.; Leitão, S.; Neves, L.; Amaral, P.; Bernardo, Hermano; Pires Neves, LuísBuilding energy simulation tools provide accurate predictions of the energetic performance of buildings and thermal comfort of its occupants, allowing an evaluation of the impact of proposed improvement measures, in order to support choice for the more economically viable. This paper aims at determining the energy saving potential that can be obtained by adequate measures and investments. It presents the simulated values of the impact on the energy consumptions of a building, caused by artificial lighting control systems set to maximize use of natural lighting. Results show that optimization measures have a significant impact on energy consumptions reduction, and lead to important economical savings.
- Use of parabolic trough solar collectors for building air conditioning and domestic hot water production - case studyPublication . Quintal, E. S.; Bernardo, H.; Amaral, P. G.; Pires Neves, LuísThe aim of this study is the evaluation of the economic and technical viability for the installation of a solar air conditioning system based on parabolic solar concentrators and adsorption technology, in an existent building. As case study was selected a university canteen located in the centre region of Portugal. Besides air conditioning, this system is also used for domestic hot water production. This solution enables the system use throughout the year in order to maximize the investment. Results show that the implementation of these systems is feasible for the portuguese reality and the return of the investment can be achieved in 8 years without governmental financial support.