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A PV/T and Heat Pump based trigeneration system model for residential applications
Joyce, António; Coelho, Luis; Martins, João F.; Tavares, Nelson; Pereira, R.; Magalhães, PedroA solar trigeneration system, based on photovoltaic-thermal (PV/T) collectors, photovoltaic (PV) modules and a heat pump unit for heating and cooling, is modelled to forecast the thermal and electric yields of the system. The aim of the trigeneration system is to provide enough electricity, domestic hot water (DHW), heating and cooling power to meet the typical demand of an urban single family dwelling with lim...
Autonomous hydrogen systems: control strategy
Martins, João F.; Viana, Susana; Joyce, António; Pires, Armando; Rangel, C. M.; Sotomayor, João; Castro, RuiThis paper describes the control strategy for a Stand-Alone Energy System Supported by Totally Renewable Hydrogen Production. The basic control strategy considers the pressurized hydrogen gas storage as the energy buffer. The basic logic is that the exceeding renewable energy (solar and wind) is used to accumulate hydrogen, while the fuel cell uses this hydrogen to produce electrical energy within insufficient ...
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