The simulation tool allows the user to choose different parameters related with the simulation process: time-step, accuracy, etc. The smaller the time-step, the longer the simulation time but the more precise are the results concerning the PCM interaction. This statement has to be taken into account when a PCM simulation is carried out. It was […]

The models used for the parabolic trough collector fields are based on the model of Lippke [5] which has been developed for solar thermal power plants. The implementation of these models in Greenius has been described in [6]. The model parameters of the specific collector type have been measured at DLR and published in [7]. […]

Cases 2A and 2B deal with photovoltaic panels, table 4 shows field production on the whole year. PV field feeds grid network, so electricity generation can be done when vapour compression chiller is not operating. Conservative shading assumptions is taken for all other results. For case 2A, PV field produces more than the whole vapour […]

The planning process for the insertion of renewable energies in rural areas is normally a complex task because it demands an approach with multiple criteria: energy resources, socio-economic indicators, indices of non-electrification, among others. If we addiotinally consider the intention of stimulating regional development through the inclusion of energy systems for productive aims, we have […]

S. Brandmayr1*, M. Konrad1, W. Zorner1 and V. Hanby[2] 1 Ingolstadt University of Applied Sciences – KompetenzzentrumSolartechnik, Esplanade 10, 85049 Ingolstadt, Germany 2 De Monfort University, Institute of Energy and Sustainable Development, The Gateway,Leicester LE1 9BH, United Kingdom* Corresponding Author, sebastian. brandmayr@fh-ingolstadt. de Abstract This paper describes with the R&D activities at Ingolstadt University of […]

1.1. Model structure There are in general two possible ways to describe the thermal behaviour of a heat exchanger considering its geometry. The first one is to (numerically) solve heat transfer equations using finite element or volume methods, e. g. in FLUENT. However, these models require much computing effort and are, therefore, not appropriate for […]

The existing district heating grid with a total grid length of approx. 34 km is powered by a gas-fired power plant (Fig.1) and has an annual heat demand of 156 GWh, the peak heat load is in the amount of 72 MW. The power plant is joined with a water-based thermal storage tank with a […]

The interconnection of subsystems is done via simple EQUATION blocks acting as interfaces. They provide all needed inputs of the components collected within a subsystem and vice versa the outputs needed by connected subsystems or components. By using EQUATION pairs as input and output interfaces, variables can be transferred without a visual link between a […]