October 2013
Intermediate to advanced
306 pages
12h 17m
English
Content preview from Estimating for Heating and Ventilating, 3rd Edition
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ESTIMATING ANNUAL RUNNING COSTS 253
(For estimating purposes only. Water heating by individual heaters)
Type of heating
Percentage of
capital cost
Overhead radiant gas heating
2i
Gas convectors (flue type) 2
Gas convectors (flueless)
li
Gas radiators 1
Gas warm-air units (flue type with fan-assisted air
circulation)
3
Electric unit heaters
1±
Electric radiant, reflector type heaters 1
Electric convectors (natural air circulation)
1
Electric convectors (fan-assisted air circulation)
Electric radiators (oil-filled)
I
Electric floor warming and ceiling heating
i
Electric block storage heating 1
VENTILATION SYSTEMS
The maintenance of a simpl ...
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