Solar Glossary

You are here

a*b*c*d*e*f*g*h*i*j*k*l*m*n*o*p*q*r*s*t*u*v*w*x*y*z

b

Balance of system / BOS: This comprises of all costs and components, other than photovoltaic modules. The factors covered are design costs, venue preparation, land, erection of support structures, system installation, power conditioning, battery costs, indirect storage, maintenance expenditures, operation and other miscellaneous costs.

Baseline Performance Value: The measurement of base values of VOC, ISC, PMP and IMP, as finalized by laboratories that are accredited, with corrections according to the Standard Test requirements. These help to legalize the manufacturerメs performance measurements, furnished with the certified IEEE 1262 modules.

Blocking Diode: This is a semiconductor used to prevent the reverse flow of current through module (UL 1703). Apart from this, a series-based diode protects the modules in a photovoltaic string from reverse current flow, hence prevents thermal destruction risks of the solar cells.

British thermal unit / BTU: Refers to the heat energy quantum needed to increase the temperature by 1ᄚ F of1lb.of water at a constant pressure of 1 atmosphere.

Bypass Diode: This refers to a semiconductor connected to at least one solar cell in the PV module in a way that allows the diode to conduct if a solar cell is reverse biased due to mismatch in short-circuits current. (UL 1703) On the other hand, diodes connected in anti-parallel manner in solar cells can prevent cells from being destroyed thermally.