CPD Programme
1. Which of these is unlikely to be true when using the CIBSE
simple method to calculate a room heat loss?
A A more radiant heat source (higher R value) will have a
lower calculated heat loss.
B In many cases factors F and F are close to a value of 1
1cu 2cu
C A more convective heat source (lower R value) will have a
lower calculated heat loss.
D As ventilation coefficient, CV rises calculated heat loss will
Name (please print)..................................................................................
rise
E As Σ(AU) rises the heat loss will increase Job title........................................................................................................
2. When considering the heat transfer associated with room
Organisation..............................................................................................
heating equipment, which of these is unlikely to be true?
Address.......................................................................................................
A Radiant heat passes through the air with little absorption of
heat .....................................................................................................................
B Traditional wall mounted or floor standing ‘Column
radiators’ are likely to have a high radiant fraction
.....................................................................................................................
C Radiant heat will be absorbed directly by solid surfaces
Postcode.....................................................................................................
D Some radiant heat will be reflected before finally being
absorbed
Email ...........................................................................................................
E Flat plate radiant heaters will emit infrared radiation
Are you a member of:
3. A top floor room (20m x 10m x 3m with one outside wall) heated
CIBSE
by a radiant heater with R of 0.9 has the following characteristics
If so, please state your membership number
and a calculated heat loss of 4855 W. What is the room air
temperature likely to be (to the nearest whole number)? (if available)................................................................................................
Σ(A) = 245m
2
, C = 120 W·K
-1
, Σ(AU) = 84.5 W·K
-1
, θ = -4°C, θ = 21°C
v ao c
Other institution
A -4°C D 21°C
B 14°C E 24°C (please state)..............................................................................................
C 18°C
To help us develop future CPD modules, please indicate your
4. Which of these is unlikely to be a feature of a radiant panel? primary job activity:
A Can be decoratively finished to suit décor Building services engineer
B Likely to be steel or aluminium panel
Mechanical engineer
C Uses pipe attached intimately with the rear of the panel to
Electrical engineer
supply heat from the LPHW distribution system Commissioning engineer
D Does not have any convective heat output Energy manager
E Typically has a slow thermal response
Facilities manager
Other (please give details).................................................................
5. The benefits of using high level radiant panels are likely to
By entering your details above, you agree that CIBSE may contact you from time to time with
include of all these except one – which one? information about CPD and other training or professional development programmes, and
about membership of CIBSE if you are not currently a member.
A They directly promote significant air movement
B Relatively easy to clean
Please.go.to.www.cibsejournal.com/cpd.to.complete.this.
C Kept out of reach of occupants reducing risks of injury and questionnaire.online..You.will.receive.notification.by.email.of.
damage
successful.completion,.which.can.then.be.used.to.validate.your.
D Can be used in conjunction with exposed thermal mass of CPD.records.in.accordance.with.your.institution’s.guidance.
concrete soffits
Alternatively,.you.can.fill.in.this.page.and.post.to:..
E Potential to increase net lettable area compared with other
N Golledge, CIBSE, 222 Balham High Road, London, SW12 9BS
floor/wall mounted systems
62 CIBSE Journal June 2009 www.cibsejournal.com
CIBSEjun09 pp59-62 cpd.indd 62 5/28/09 3:12:32 PM
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