Enhanced electrical performance for heterojunction with intrinsic thin-layer solar cells based photovoltaic thermal system with aluminum collector. (July 2020)

• Record Type: Journal Article
• Authors: Pang, Wei; Cui, Yanan; Zhang, Qian; Yan, Hui
• Is Part Of: International communications in heat and mass transfer. Volume 116(2020:Aug.)
• Publication Date: 2020-07
• Subjects: HIT-PVT module -- Aluminum collector -- Power increment -- Efficiency -- Electrical energy; EVA Ethylene-Vinyl-Acetate -- HIT Heterojunction with Intrinsic Thin-Layer -- PVT Photovoltaic Thermal -- TPT Tedlar/Polyethylene terephthalate/Tedlar -- Pm Power at maximum power point, W -- Im Current at maximum power point, A -- Vm Voltage at maximum power point, V -- i inlet -- th thermal -- o outlet -- w water -- wi initial value of water -- C specific heat capacity, J/(kg·K) -- ΔE electrical energy increment, % -- H daily total solar radiation, MJ/m2 -- ΔP power increment, % -- T temperature, K -- m mass, kg -- Δt time interval, s -- η efficiency, % -- FF Fill Factor -- PV Photovoltaic -- PES Primary Energy Saving -- Isc short circuit current, A -- Voc open circuit voltage, V -- a ambient -- ex exergy -- iv inverter -- oa overall -- ref. reference -- wf final value of water; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Heat -- Transmission; Mass transfer; Periodicals; 621.4022
• DOI: 10.1016/j.icheatmasstransfer.2020.104705
• Languages: English
• ISSNs: 0735-1933

Abstract

Abstract: Crystalline silicon heterojunction with intrinsic thin-layer photovoltaic (HIT-PV) module produces more output power, compared with the c-Si photovoltaic module. However, it presents a risk of overheating in hot weather. In this paper, we used a new cooling design of the heterojunction with intrinsic thin-layer photovoltaic thermal (HIT-PVT) module to lower the temperature using laminated encapsulation of an aluminum collector in outdoor climates. The measured electrical, thermal and total efficiencies of a HIT-PVT system can catch up to 17.47%, 34.71% and 52.18%, respectively. Moreover, comparing with HIT-PV module, the output power of the HIT-PVT module was enhanced by 5.58% with coolant circulation, and the converted electrical energy can be increased by 9.81% with the designed HIT-PVT module. In addition, the primary energy savings of the new HIT-PVT and HIT-PV systems were 79.77% and 43.71%, respectively.