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ENVS 297 Solar PV Design > PV Modules > Flashcards

PV Modules Flashcards

1
Q

The most common PV module technology on residential and commercial projects is __________.

A

crystalline silicon

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2
Q

The module type that dominates the market is __________.

A

crystalline silicon

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3
Q

True or False: Polycrystalline wafers are cut from cylindrical ingots that have been squared off, leaving the corners of these cells rounded.

A

false

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4
Q

The corners of a monocrystalline cell are rounded because the cells are cut from ingots that are __________.

A

cylindrical

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5
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Made from a square ingot

A

polycrystalline

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6
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Made from a cylindrical ingot

A

monocrystalline

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7
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Can be installed on a flexible substrate

A

thin-film

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8
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Square-cut cells fit better inside rectangular module forms

A

polycrystalline

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9
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Back sheet is more visible due to shape of cut cells

A

monocrystalline

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10
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Costs typically are higher

A

monocrystalline

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11
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: High quality cells are marginally more efficient

A

monocrystalline

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12
Q

Match the following descriptions to monocrystalline, polycrystalline, or thin-film modules: Uncommon on residential projects

A

thin-film

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13
Q

True or False: Quality, availability, and cost typically drive the decision between monocrystalline and polycrystalline modules.

A

true

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14
Q

True or False: Quality, availability, and cost typically drive the decision between monocrystalline and polycrystalline modules.

A

full-size or split

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15
Q

A junction box serves as a transition point from internal to external wiring and contains __________.

A

bypass diodes

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16
Q

One important safety feature that is part of a PV module and helps to eliminate hot spots and reduce fire hazards is a __________.

A

bypass diode

17
Q

When shading occurs on a PV module, the current flow is essentially blocked by the shade, which can cause a high-resistance hot spot. These hot spots are mitigated by the presence of __________.

A

bypass diodes

18
Q

Module quick connectors must be installed exactly per the manufacturer’s instructions, and they must be __________.

A

the same make and model

19
Q

True or False: It is acceptable to use a connector on a source circuit “homerun” wire that is different from the connector on the PV module leads if they plug together securely.

A

false

20
Q

The number of cells in a PV module dictates the module __________.

A

voltage

21
Q

A PV module’s voltage is determined by the __________.

A

number of cells

22
Q

A half-cut cell module is configured into two halves, which gives them __________.

A

better shade response than full-cell modules

23
Q

True or false: A full-cell module has better shade response than a half-cut cell module due to the presence of bypass diodes.

A

false

24
Q

Calculate the efficiency of a half-cut PV module that is 2261 mm x 1134 mm and rated at 535 watts.

A

=20.9%

2.261 m x 1.134 m = 2.56 m²
535 W ÷ 2.56 m² = 209 W/m²
209 W/m² ÷ 1000 W/m² = 0.209 x 100 = 20.9%

25
Q

True or false: The larger a PV module’s size, the higher the efficiency will be.

A

false

26
Q

True or false: A PV module’s rated efficiency depends on its physical size and STC rated power output compared to STC irradiance.

A

true

ENVS 297 Solar PV Design (5 decks)

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