Post on 14-Feb-2018
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Application of Ceiling
Radiant Cooling in aUniversity Environment
ASHRAE Chicago Seminar 7, 1/2/!"
Stanley A# $%mma, &h#'#, E#
&rofessor, Architect%ralEngineering&enn State University
email( sam11)ps%#ed%
*e+( http(//doas
7/23/2019 Ashrae Seminar 7
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&ro-ect .ocation
Engineering Unit , a +%ilding+%ilt in the early 10!!s
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Some Space Attri+%tes
Area Height
Use cc%pants S%rro%ndings
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&ro-ect +-ectives
'eco%ple the space sensi+le 3latent loads
Control condensation
E4perience ceiling radiantcooling
Chec5 the capacity of radiant
cooling Chec5 the aco%stical 6%alities $ 3
Controlla+ility
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'AS/Radiant CoolingSchematic
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A irt%al 8o%r
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A
RA
Enthalpy*heel
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9 'esign 'ay
&erformance
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*hat A+o%t Controls:
8he control &anel
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Space 8emperat%re 3Condensation &revention
Control
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25
30
35
40
45
50
Dry Bulb Temperature F
35
70
105
140
175
40 50 60 70 80 90 100 110 120 130
40%60%
20%
80%
15
20
Humidityratio,
grains
/lb
Enthalpy *heel Control
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E4periences Since
A%g%st ;!2 alancing the 'AS Air peration f 8he &anel Control
alve *hen &laced ?n 8heA%tomatic $ode
Condensation E4periences $oist%re $igration 8hro%gh the
very &oro%s Envelope
peration of the Enthalpy *heelin the *inter#
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E4periences Contin%ed
Sensi+le and.atent loaddeco%pling
Aco%stical&erformance
$aintenance Controls 'irt and 'rafts 8hermal Comfort
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Concl%sions
8he system is =or5ing even +etterthan e4pected> ?t is this spea5ersopinion that the system representsthe ne4t generation HAC sol%tion#
@o +arriers =ere o+served in thispro-ect that =o%ld prevent theadoption of 'AS/Radiant systems
+y the HAC ?nd%stry> ?n the A.?'AS short co%rse this
afternoon at 2(!!, ? =ill have moretime to lay o%t the entire approach#
oin me if yo% =ant to learn moreB
ESTIONS