Abstract
Several strategies have been developed to enhance the performance of a solar photovoltaicthermal (PV/T) system in buildings. However, these systems are limited by the cost, complex structure and power consumed by the pump. This paper proposes an optimisation method conversion strategy that modulates the ratio of thermal to electrical energy from the photovoltaic (PV) cell, to increase the PV/T system’s performance. The design and modelling of a PV cell was developed in MATLAB/Simulink to validate the heat transfer occurring in the PV cell model, which converts the radiation (solar) into heat and electricity. A linear regression equation curve was used to define the ratio of thermal to electrical energy technique, and the behavioural patterns of various types of power (thermal and electrical) as a function of extrinsic cell resistance (Rse). The simulation results show an effective balance of the thermal and electrical power when adjusting the Rse. The strategy to modulate the ratio of thermal to electrical energy from the PV cell may optimise the PV/T system’s performance. A change of Rse might be an effective method of controlling the amount of thermal and electrical energy from the PV cell to support the PV/T system temporally, based on the energy need. The optimisation technique of the PV/T system using the PV cell is particularly useful for households since they require electricity, heating, and cooling. Applying this technique demonstrates the ability of the PV/T system to balance the energy ( thermal and electrical) produced based on the weather conditions and the user’s energy demands.
Highlights
Renewable energy (RE) originates from the natural processes, which are constantly replenished [1]
The overall photovoltaic module performances are typically defined by the standard test conditions (STC), such as radiation, which is 1000 W/m2, ambient temperature, 25 °C, air mass is 1.5
These outcomes are in concurrence with those acquired by other authors, where the rise of Rse is attributed to dust particles on the PV model [42,43,44]
Summary
Renewable energy (RE) originates from the natural processes, which are constantly replenished [1]. It was noted that at a temperature of about 62 °C, the controlled flow rate of the nanofluid yielded a total efficiency of 70 %, while the electrical and the thermal efficiency were 11 % and 59 %, respectively [13] This method is costly, suffers from the high-pressure drop and is difficult to hold nanoparticles suspended in the base liquid [14, 15]. Acta Polytechnica solar cooling systems that use a reversible air-to-water heat pump as the heat and cold source [17]. In view of these findings, it is obvious that an improvement of the PV/T system’s performance is needed. Modelling and analysing the PV cell as well as thermal power, electrical power and energy efficiency, were evaluated
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