The experiment was conducted in the solar calorimetry laboratory. The tests were carried out in an air – conditioned room having an average temperature of 23°C. Figure 4 shows the pictures of the experimental test rig, while figure 5 shows the PIV system.

The prototype built followed the design presented in figure 2. This system incorporates a PV-cell 150mmx150mm, Pmax=1,12W, (Polycrystalline Silicon wafer) and the whole structure is made of aluminium alloy. In fig. 6 the global developed prototype is shown. The control unit was developed using an industrial Siemens S7-300 PLC (Programmable Logic Controller). Figure 7 details […]

The tests at DTI were done outdoors on a side by side configuration with three test panels of 3.5 m2 each and a single PV reference module. PV modules were each 190 Watt from Evergreen. System 1: SolarWall with two PV modules on top, variable flow (high) System 2: SolarWall with two PV modules on […]

J. Widen1*, E. Wackelgard1 and P. Lund2 1 Department of Engineering Sciences, Uppsala University, P. O. Box 534, 751 21 Uppsala, Sweden2 Advanced Energy Systems, Helsinki University of Technology, P. O. Box 2200, FI-02015 HUT, Finland Corresponding Author, ioakim. widen@angstrom. uu. se Abstract Extensive integration of distributed photovoltaic (PV) generation into residential areas is likely […]

D. Chemisana1* , J. Cipriano, M. Ibanez, B. Abbdel Mesih, A. Mellor 1 University of Lleida, 25001 Lleida, Spain. Daniel Chemisana, daniel. chemisana@macs. udl. cat Abstract This paper presents the thermal evaluation of an evacuated PVT collector designed to operate under concentrated radiation (15 suns). Finite volume 3D numerical computations have been carried out in […]

Air velocity under natural convection inside ducts varies across the duct as well as in the flow direction [7]. Consequently the unpredictable behaviour of airflow in ducts under natural convection requires high accuracy velocity measurements to successfully predict the airflow rate [8]. As the temperature of the top plate was increased, the warming of the […]

The software used for the PLC programming was the Siemens Simatic Step 7 [13], with the Simatic S7 Prodave V5.5 [14] needed for the communication between the Scada system and the PLC network. The designed control algorithm was implemented using the Ladder Diagram language [15]. The developed control algorithm is illustrated in fig. 8. A […]

E. Yandri[2]* N. Miura1, T. Kawashima1, T. Fujisawa1, M. Yoshinaga2 1Solar Energy Research Group, Department of Vehicle System Engineering, Faculty of Creative Engineering,Kanagawa Institute of Technology, 243-0292 Atsugi, Japan 2Department of Architecture, Faculty of Science and Technology, Meijo University, 468-8502 Nagoya, Japan Corresponding Author, yandri@ctr. kanagawa-it. ac. jp Abstract A Hybrid Photovoltaic Thermal (PV/T) collector […]