Master Set, BOMI Energy Management and Controls. Exam Questions And Answers 100% Pass.
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Course
BOMI
Institution
BOMI
Master Set, BOMI Energy Management and
Controls. Exam Questions And Answers
100% Pass.
Define Thermal Energy - AnswerEnergy associated with the movement of molecules and
measured as heat
Define Electrical Energy - AnswerEnergy associated with the flow of negatively charged
electrons through a...
Master Set, BOMI Energy Management and
Controls. Exam Questions And Answers
100% Pass.
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.
What climatic conditions affect buildings energy use? - Answer✔Temperature variation, quality
of sunlight, wind velocity and direction, and snowfall
What are some solar controls that are used to reduce heat losses and gains caused by windows? -
Answer✔Curtains, awnings, tinted glass, reflective films.
What does heat absorbing glass do? - Answer✔reduces solar radiation, transmission without
substantially reducing visibility
What type of glass should be used in buildings with long cooling seasons? - Answer✔reflective
glass
What do anti reflective coatings do? - Answer✔increase both day and night solar heat gains in a
space by reducing solar heat relfected
What do low-E coatings do? - Answer✔Pass long wave radiation into a building for winter
heating and reflect solar radiation from outside surfaces back for summer cooling
What causes stack effect? - Answer✔Air infiltration patter where air enters lower floors rises
within the building and exits the upper floors due to the natural rising warmer air.
What will you need to do to assess the financial value of an energy management system? -
Answer✔Assess energy performance, set financial goals
communicate goals
track energy performance and financial outcomes
review and improve action plan
communicate results
Why is it important to establish a baseline of a buildings current energy use? - Answer✔so you
can compare once the improvements are made.
What is the next step after establishing a buildings energy performance baseline? - Answer✔set
energy performance goal
What does EPA's FVC do? - Answer✔Financial value calculator. measures energy performance
to determine feasibility of energy instruments. Illustrates increase in capitalized complete
corporate value. Track energy performance improvements
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