Transmittance Double-glass photovoltaic modules

What is the transmittance of PV glass?

The transmittance of PV glass, which is the ratio of the light transmitted through it to the incident light varies with different PV coverage rates (area proportion of photovoltaic cells) and different materials of PV modules.

Are double-glass PV modules durable?

Double-glass PV modules are emerging as a technology which can deliver excellent performance and excellent durability at a competitive cost. In this paper a glass–glass module technology that uses liquid silicone encapsulation is described. The combination of the glass–glass structure and silicone is shown to lead to exceptional durability.

Why is optical transmittance important for photovoltaic encapsulation materials?

INTRODUCTION Optical transmittance is a key performance characteristic for photovoltaic (PV) encapsulation materials. The discoloration of encapsulation (and corresponding reduction in transmittance) has been identified as a key also contributor to the long-term performance degradation of fielded PV modules

Does low PV glass transmittance reduce solar heat gain?

Lowered PV glass transmittance and the realization of natural ventilation through the DSF structure would both contribute to the reduction of solar heat gain into the room context.

What is a double glass c-Si PV module?

Recently several double-glass (also called glass–glass or dual-glass modules) c-Si PV modules have been launched on the market, many of them by major PV manufacturers. These modules use a sheet of tempered glass at the rear of the module instead of the conventional polymer-based backsheet. There are several reasons why this structure is appealing.

How does glass transmittance affect the power generation efficiency?

This will in turn influence the PV module temperature and thus the power generation efficiency . The glass transmittance acts as an important factor affecting both the thermo-optical properties of the STPV unit itself and the overall performance of the combined system (STPV-DSF).