Category: EuroSun2008-3

Simulation results

The results of these simulations for the selected representative winter period from 16th – 31st July are shown in Figure 3. This graph shows the heating energy of the outlet air from the 16m2 PVT system simulated in TRNSYS compared with the required house heating as modelled using both IDA ICE and TRNSYS. Reasonable correlation […]

Experience: the EURAC study case

In Bolzano, the capital of the most northern Italian Province, three buildings are equipped with solar collectors assisted by one Combined Heat and Power generator. For one of them, which is the seat of EURAC, a large amount of information could be collected thanks to a monitoring system which has worked since 2005. The main […]

Test Results

3.1. Canadian Tests The tests were performed over a two week period in October 2006 and the results are summarized in the following tables. Table 1 lists the two primary test conditions, #1 for NOCT test conditions typical of PV systems and #2 for test conditions typical of solar air collectors. The heat was drawn […]

Model development

1.1. General specifications The PVT system modelled uses air as the heat transfer fluid, drawn through a duct at the rear of the PV modules, and has a glass cover. In winter, air is drawn past the rear of the photovoltaic panels and ventilated into the house. In summer, it is envisaged that air would […]

Photovoltaic efficiency

Using TRNSYS the PVT system was modelled with a flow rate of 300 kg/hr (0.083 kg/s), equivalent to one building air change per hour, and with zero air flow, as would be the situation for a non-ventilated building integrated PV system. The results showed a difference of at most 1.3% between the PV efficiency operated […]

Research approach

1.1. Goals The just described experience demonstrates that a deep attention has to be paid in planning SHC-CHP systems from three points of view: layout, control strategy and machine sizes. The present research work proposes a first layout with a specific control strategy and a procedure for sizing such a plant with the main goal […]