CPD Programme
Module 11
Name (please print)..................................................................................
December 2009
_________________________________________ Job title........................................................................................................
1. Referring to Figure 2 if both air streams have an equal mass flow
Organisation..............................................................................................
rate what is the effectiveness if h
A
= 30 kJ/kg, h
B
= 60 kJ/kg,
Address.......................................................................................................
h
R
= 70kJ/kg and h
R'
= 45kJ/kg
A 0.25 D 1.00 .....................................................................................................................
B 0.50 E 1.25
C 0.75
.....................................................................................................................
Postcode.....................................................................................................
2. What condition might provide dehumidification of an air stream
by spraying water into the air?
Email ...........................................................................................................
A Spray water is at a lower temperature than the air dew
point temperature
Are you a member of:
B Spray is heated above the air dry bulb temperature
C Spray temperature is above the air dew point temperature
CIBSE
D Spray has a higher temperature than the wet bulb If so, please state your membership number
temperature the air
E The spray is sprayed on to the heating coil (if available)................................................................................................
3. A face and bypass arrangement has 0.5 kg/s air leaving the coil
Other institution
at 6°C and 1 kg/s air at 9°C bypassing the coil. What is the resulting
mixed air temperature? (please state)..............................................................................................
A 5°C D 8°C
B 6°C E 9°C
To help us develop future CPD modules, please indicate your
C 7°C
primary job activity:
Building services engineer
4. If a room sensible cooling load is 4.00kW and the latent
Mechanical engineer
room load is 2.67kW where would the RRL be plotted on the
Electrical engineer
psychrometric protractor.
Commissioning engineer
A Bottom quadrant, 0.60
Energy manager
B Bottom quadrant, 0.67
Facilities manager
C Top quadrant, 0.60
Other (please give details).................................................................
D Bottom quadrant, 0.67
E It can’t be plotted
By entering your details above, you agree that CIBSE may contact you from time to time with
information about CPD and other training or professional development programmes, and
5. If a fan produces a total fan pressure of 0.5kPa what would be the
about membership of CIBSE if you are not currently a member.
approximate rise in air dry bulb temperature as it passes through
the fan.
Please.go.to.www.cibsejournal.com/cpd.to.complete.this.
A Less than 0.05K
questionnaire.online..You.will.receive.notification.by.email.of.
successful.completion,.which.can.then.be.used.to.validate.your.
B 0.05K
CPD.records.in.accordance.with.your.institution’s.guidance.
C 0.15K
D 0.50K
Alternatively,.you.can.fill.in.this.page.and.post.to:..
N Hurley, CIBSE, 222 Balham High Road, London, SW12 9BS
E 1.50K
www.cibsejournal.com December 2009 CIBSE Journal 53
CIBSEdec09 pp50-53 cpd.indd 53 11/19/09 3:59:18 PM
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