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Master Set, BOMI Energy Management and Controls Exam 2024 | BOMI Energy Management and Controls Exam Latest 2024 Questions and Correct Answers Rated A+$18.99
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Master Set, BOMI Energy Management and Controls Exam 2024 | BOMI Energy Management and Controls Exam Latest 2024 Questions and Correct Answers Rated A+
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Master Set, BOMI Energy Management and Controls E
Institution
Master Set, BOMI Energy Management And Controls E
Master Set, BOMI Energy Management and
Controls Exam 2024 | BOMI Energy
Management and Controls Exam Latest 2024
Questions and Correct Answers Rated A+
Master Set, BOMI Energy Management and
Controls Exam 2024 | BOMI Energy
Management and Controls Exam Latest 2024
Questions and Correct Answers Rated A+
Define Thermal Energy -ANSWER-Energy associated with the
movement of molecules and measured as heat
Define Electrical Energy -ANSWER-Energy associated with the flow of
negatively charged electrons through a conductive medium.
Define Mechanical Energy -ANSWER-The sum of kinetic and potential
energy. Kinetic being the energy of motion, potential being stored
energy.
Define BTU -ANSWER-Quantity of heat possessed by an object is
measured in BTU. It is the amount of heat required to raise temp of
one pound of pure water one degree F at sea level.
What is the fundamental law of heat transfer? -ANSWER-heat always
flows from an object that is warmer to an object that is cooler.
What are the three factors affecting amount and rate of heat flow
through a building envelope? -ANSWER-1. Total surface area
2. Temperature differences
3. Material properties.
What are the four factors uses to evaluate the materials that form a
building enevlope? -ANSWER-1. Thermal Conductivity
2. Thermal Conductance
3. Thermal Resistance
4. Overall Coefficient of heat transfer
What is thermal conductivity? -ANSWER-The measurement of a
materials ability to conduct heat.
,What is thermal conductance? -ANSWER-A measure of the rate of
heat flow through a material or air space.
What is thermal resistance? -ANSWER-A materials ability to retard
heat flow.
What is the overall coefficient of heat transfer? -ANSWER-Resistance
value of all building materials, air spaces, including walls, ceilings and
surface air films.
What happens when heat is added to a substance? -ANSWER-It's
molecular motion increases.
What is temperature? -ANSWER-The measurement of the intensity of
heat.
What does a BTU measure? -ANSWER-The quantity of heat.
What is sensible heat? -ANSWER-heat that when added to or
removed from a substance it changes the temperature of the
substance
What is specific heat? -ANSWER-The ratio of the temperature it takes
to raise the temperature of a substance 1 degree to the amount of
heat it takes to raise a pound of pure water 1 degree.
What is the formula for determining the amount of heat required to
change the temperature of a substance without changing the
substances state? -ANSWER-Heat required in BTU - weight in LB X
specific heat X temp change in degrees F.
What is latent heat? -ANSWER-Heat that when added or removed
from a substance changes that substances state, but not its
temperature.
, What are the standard terms used to describe the change of a
substance from one state to another through the absorption or release
of latent heat? -ANSWER-solid to liquid: melting
liquid to solid: fusion
liquid to gas: vaporization
gas to liquid: condensation
What are the three basic processes of heat transfer? -ANSWER-
Conduction, Convection, Radiation
What is conduction? -ANSWER-Heat transfer through matter,
molecule to molecule, due to temp difference
What is convection? -ANSWER-Heat transfer through fluid, typically
air or water
What is radiation? -ANSWER-Heat transfer through electromagnetic
waves
What is scale formation? -ANSWER-mineral deposits on a metal
surface that have precipitated out of a solution
What happens to a boiler with excessive scaling? -ANSWER-Reduced
steam output, excessive fuel use, increase in stack temp.
What should be done to the feedwater treatment if scale is present? -
ANSWER-modify schedule and/or add chemicals.
What else can be done to reduce scale? -ANSWER-Use blowdown
controls.
What aspects of building design to climate conditions influence? -
ANSWER-Orientation, configuration, envelope, energy requirements,
illumination, heating, HVAC requirements.
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