test and certification. cem certification what does this mean? jobs: corporate energy manager energy...

Test and Certification

CEM CertificationWhat does this mean?Jobs:

Corporate Energy ManagerEnergy Management ConsultantEnergy AuditorProduct Energy SalesProduct Energy ManagementEnergy Buyer / Broker

CEM CertifiedAll CEMS are not equal

General areas of knowledgeSpecializationRegional SpecializationDOE vs ASHRAE vs LEEDWhat does this mean to you.

Applying your knowledgeCEM Certification

To raise the professional standards of those engaged in energy management.

To improve the practice of energy management by encouraging energy managers in a continuing program of professional development.

To identify persons with acceptable knowledge of the principles and practices of energy management related disciplines and laws governing and affecting energy managers through completing an examination and fulfilling prescribed standards of performance and conduct.

To award special recognition to those energy managers who have demonstrated a high level of competence and ethical fitness for energy management.

Getting your CEMCEM requirements

Minimum of 700 points on the examMinimum of 700 points on the applicationA higher exam score is needed with a minimum

application score. For Example if you engineering experience is

borderline energy experience and you score low on the test the experience can be disallowed.

Test scores are valid for 3 years

CEM TestCEM test has 17 sections3 Mandatory sections

Codes and StandardsEnergy Accounting and EconomicsEnergy Audits and Instrumentation

CEM Test14 Optional Sections

Electrical SystemsHVAC SystemsIndustrial SystemsBuilding EnvelopesCogeneration & CHP systemsEnergy ProcurementBuilding Automation and Control SystemsGreen Buildings, LEED and Energy Star

CEM Test14 Optional Sections (cont)

Thermal Energy Storage SystemsLighting SystemsBoiler and Steam SystemsMaintenance & CommissioningAlternative Financing

CEM Test14 Optional Sections (cont)

Only the first 8 will be scored If you mark in a section erase it totally if you decide to

do a different section.What sections to do?

You need a specialty, whatever it is do that section. Remember there is no penalty for wrong answers Spend a little time on each section to see which is the

easiest Your teachers are a great source of knowledge use them Remember the first 8 are the only ones scored so

ERASE COMPLETELY.

TechniquesAll tests have a technique that will help you.

SAT, GRE, LSAT, Bar all have specific ways to take them

This test is really 4 kinds of questions: Memorization Logic Evaluation Calculation

TechniquesMemorization

A lot of questions are pure memorization. What date did who do what. What is the level, rate etc accepted for this group.

Learn important dates and names (memorize them)

Create/index the data Memorize basics so you can look up specifics For example ASHRAE 62 deals with air in a

building. I can look up specifics. These important items will be give you in the class.

TechniquesExample Question

ASHRAE standard 62-2007 defines the minimum standards for: (A) HVAC equipment sizing (B) Acceptable indoor air quality levels (C) Chiller efficiencies (D) Motor efficiencies

TechniquesLogic

These questions are items that require thought, not memorization but not calculation.

These may be an evaluation they may be an application of knowledge.

They will not be an exact item from a note or reference.

TechniquesSample Problem

Ground source heat pumps may not meet efficiency projections due to:

(A) Improperly installed ground loop (B) Poor water treatment (C) Soil contamination (D) Oversizing

TechniquesEvaluation

These are a combination of the previous 2 techniques:

They require some knowledge, may require some logic and will require simple (in your head) math

They will almost always be trying to trick you.Feel confident in yourself.Remember no penalty for wrong answers and

you only need 88 right to pass.

TechniquesSample Problem

What is the $/MMBtu for a 80% efficient gas furnace if gas costs $12.00/MCF?

(A) $8.89 (B) $11.23 (C) $22.46 (D) $15.00

CalculationThese are the down and dirty plug in the

numbers and get the answer problems.Prepare a cheat sheet by section of appropriate

equationsWrite equations down by section, if you repeat

the equation its only paper.Be prepared for 2-3 per sectionDo them last!!!!!!!The count the same as a TRUE FALSE

question.

TechniquesSample Problem

Determine the solar heat gain through a 1’ x 3’ window at 1:00 pm in August located at latitude 28° N. The window has an east orientation. The SHGF for the specified conditions is 160 BTU/Hr- ft2. The SC is 0.70.

(A) 1,120 Btu/hr (B) 228.6 Btu/hr (C) 336 Btu/hr (D) None of the above

TechniquesOverall Test Techniques

Time will be a factor Each problem you have less than 2 minutes If you spend to much time on a problem you will

lose points because you didn’t get to an easier problem.

Work the low hanging fruit Have a plan, after the class you will know what

areas you understand and what ones you don’t. If you think a problem is going to take to much

time, grade it and move on.

TechniquesTest Plan

Section order You will find sections you thought would be easy to be

hard Be prepared with an order of which sections you want to

do Be prepared to look at least 13 sections 3 require, 8

optionals you feel comfortable with and 2 secondary sections.

Do not panic if a section has lots of calculation problems Follow your plan (88 right not 130) Grade the questions and move on.

TechniquesTest Plan

Time Management It’s a simple equation 4 hours/130 question = less

than 2 minute per question. My plan was no more than a minute on a question

on the first pass. Grade all questions no answered.

1 for look up questions 2 for quick calcs 3 for hard calcs 4 for no clue

TechniquesTest plan

With time management and grading it is a simple as 1,2,3.

Work the test don’t let the test work you.Use you back up sections. Do not force you way through the test it will

eat you alive.The faster you reach 88 the easier and more

confident you will feel.

Questions?

Sample ProblemsWhich of the following is correct:

(A) 10 kWh = 34,130 Btus (B) 5 therms = 500,000 Btus (C) 3 tons = 3,600 Btu/hr (D) 10 therms = 10,000,000 Btus

Sample ProblemsThe lighting efficiency term is lumens per

watt. (A) True (B) False

Sample ProblemsA chiller has a full load rating of 0.7 kW/ton.

What is the full load kW if this unit has a 200 ton rating?

(A) 286 (B) 140 (C) 900 (D) 75

Sample ProblemsAn office building has 50 employees and is

occupied for 250 work days a year. It is estimated that each employee uses, on the average, 1 gallon of hot water per day for hand washing. The hot water temperature required is 120°F and the city water is 60°F. Calculate the amount of annual energy required to heat this water:

(A) 12.50 MMBTUs (B) 6.25 MMBtus (C) 25 Mbtus (D) 15.4 MMBtus

Sample ProblemsAn induction motor draws 13 amps at 240

volts. The power factor is .9. Determine the kW.

(A) 5.54 (B) 5.16 (C) 4.86 (D) 6.32

Sample ProblemsA hospital uses 400,000 gallons of water per

year just for showers. The showers have the old style showerheads that use 4.5 gpm. What is the annual amount of water saved if they replace the showerheads with new ones that comply with the maximum flow rates allowed per the Energy Policy Act of 1992?

(A) 200,000 gallons per year (B) 285,765 gallons per year (C) 222,222 gallons per year (D) 177,778 gallons per year

Sample ProblemsAn alternative refrigerant to CFC-114 is

HCFC-124? (A) True (B) False

Sample ProblemsParticipation in the Marching Grants

Program for Schools and Hospitals, as authorized in the National Energy Conservation Policy Act (NECPA), requires an 80% match of funds from the recipient institutions except in hardship cases.

(A) True (B) False

Sample ProblemsIf electricity is selling for $0.06 per kilowatt-

hour and is used for electric heating with an efficiency of 100%, what is the equivalent price of natural gas per therm if it can be burned with an efficiency of 80%?

(A) $1.30/therm (B) $1.40/therm (C) $1.50/therm (D) $1.60/therm (E) $1.70/therm

Sample ProblemsAn energy saving device will save $25,000

per year for 8 years. How much can a company pay for this device if the interest rate (discount rate) is 15%?

Thank - You&

Good Luck