Heat transfer and efficiency of dual channel PVT air collector: a review

Abstract

Solar energy is free, renewable and environment friendly and has been widely used in electricity generation and thermal energy through photovoltaic thermal (PVT) system. A PVT collector is a combination of a PV panel and a thermal collector in a single unit to simultaneously generate electricity and thermal energy. In this review, mathematical models for dual channel PVT air collectors is presented. This review presents various research and development, as well as heat transfer and thermal modelling of dual channel PVT air collectors. Moreover, various mathematical models that evaluate the performances base on energy and exergy analysis of dual channel PVT air collectors are presented. Energy balance is the basic concept in developing the mathematical models. Generally, steady-state one-dimensional linear first-order differential equations were reported for solution of mathematical model. Energy and exergy efficiencies of dual channel PVT air collectors were 22.5%–67% and 3.9%-58%, respectively.

Outdoor performance investigation of a thermoelectric cooler-integrated solar air heating collector

“…Systems that combine solar technologies with other energy conversion technologies have considerably increased energy outputs compared to the standalone solar energy conversion technologies [4,5]. For instance, photovoltaic-thermal (PVT) systems produce both thermal and electrical energies from the same absorbing surface and achieve higher energy conversion efficiencies than standalone PV or solar thermal systems [6,7]. Also, thermoelectric modules (TEMs), when coupled with PV modules, produce additional electrical power, hence achieving a higher output than both the standalone PV and TEMs.…”

Effect analysis of the different channel length and depth of photovoltaic thermal system with ∇-groove collector

“…The PVT system is a combination of photovoltaic and solar collector technology. The over heat from PV panel is removed by air as medium cooling [1]. The performance of PVT system is excessive total energy transformation efficiency.…”