Ashrae Seminar 7

7/23/2019 Ashrae Seminar 7

1/17

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


2/17

&ro-ect .ocation

Engineering Unit , a +%ilding+%ilt in the early 10!!s


3/17

Some Space Attri+%tes

Area Height

Use cc%pants S%rro%ndings


4/17

&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


5/17

'AS/Radiant CoolingSchematic


6/17

A irt%al 8o%r


7/17

A

RA

Enthalpy*heel


8/17


9/17


10/17


11/17

9 'esign 'ay

&erformance


12/17

*hat A+o%t Controls:

8he control &anel


13/17

Space 8emperat%re 3Condensation &revention

Control


14/17

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


15/17

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#


16/17

E4periences Contin%ed

Sensi+le and.atent loaddeco%pling

Aco%stical&erformance

$aintenance Controls 'irt and 'rafts 8hermal Comfort


17/17

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

Ashrae Seminar 7

Documents

Transcript of Ashrae Seminar 7