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Cp Values for a solar chimney   Message List  
Reply | Forward Message #854 of 858 |
RE: [comis] Cp Values for a solar chimney

Try this:

Experimental and Theoretical Studies of a

Solar Chimney with Uniform Wall Heat Flux

 

by

Jónas Halldórsson and Christian Byrjalsen

Aalborg University

Indoor Environmental Engineering

Department of Building Technology and Structural Engineering.

Aalborg, Denmark

 

 

June 2001

 
They have the following references:

L1B

Alfonso, C., Oliveira, A., Solar Chimneys: Simulation and Experiment. Energy and buildings, 2000, 32, 71-79.

L1D

Bouchair, A., Solar Chimney for Promoting Cooling Ventilation in Southern Algeria. Building Serv. Eng. Res. Technol., 1994, 15(2), 81-93.

L1E

Spenser, S., Chen, Z. D., Li, Y., Haghighat, F., Experimental Investigation of a Solar Chimney Natural Ventilation System. RoomVent 2000, The 7th International Conference on Air Distribution in Rooms, 9-12 July 2000, Reading, UK, 813-818.

L1N

Bansal, N. K., Mathur, R., Bhandari, M. S., Solar Chimney for Enhanced Stack Ventilation. Building and Environment, 1993, 28(3), 373-377.

L1O

Barozzi, G. S., Imbabi, M. S. E., Nobile, E., Sousa, A. C. M., Physical and Numerical Modelling of a Solar Chimney-based Ventilation System for Buildings. Building and Environment, 1992, 27(4), 433-445.

L2C

Akbarzadeh, A., Charters, W. W. S., Lesslie, D.A., Thermocirculation Characteristics of a Trombe Wall Passive Test Cell. Solar Energy, 1982, 28(6), 461-468.

PH

Heiselberg Per K., Strømningsforhold i lokaler ventileret efter opblandings- og fortrængningsprincippet., Ph.d. –Thesis, Aalborg University, Denmark, 1990.

 

PVN

Nilsen, Peter V., The selection of turbulence models for prediction of room airflow. ASHRAE Transactons,  1998, 104(1B), 1119-1127.

R1E

Sandberg, M., Cooling of Building Integrated Photovoltaics by Ventilation Air. HybVent Forum ’99 – First International One-day Forum on Natural and Hybrid Ventilation, 28 September 1999, Sydney, Australia, 10-18.

R1G

Sandberg, M., Moshfegh, B., Ventilated-Solar Roof Air Flow and Heat Transfer Investigation. Renewable Energy, 1998, 15, 287-292.

R1H

Moshfegh, B., Sandberg, M., Investigation of Fluid Flow and Heat Transfer in a Vertical Channel Heated from one side by PV Elements, Part I – Numerical Study. WREC, 1996, 248-253.

R1H

Sandberg, M., Moshfegh, B., Investigation of Fluid Flow and Heat Transfer in a Vertical Channel Heated from one side by PV Elements, Part II – Experimental Study. WREC, 1996, 254-258.

R1R

Di Cristofalo, S., Orioli, S., Silvestrini, G., Alessandro, S., Thermal Behavior of “Scirocco Rooms” in Ancient Sicilian Villas. Tunnelling and Underground Space Technology, 1989, 4(4), 471-473.

R2C

Chen, Z.D., Li, Y., Mahoney, J., Natural Ventilation in an Enclosure Induced by a Heat Source Distributed Uniformly Over a Vertical Wall. Building and Environment, 2000, 36, 493-501.

R2D

Awbi, H. B., Gan, G., Simulation of Solar-Induced Ventilation. Renewable Energy Technology and the Environment, 1992, 4, 2016-2030.

R2H

Morton, B. R., Taylor, G. I., Turner, J. S., Turbulent Gravitational Convection from Maintained and Instantaneous Sources. Proc. Royal Society A, 1956, 234, 1-23.

 

 or

 
 
 
-----Mensaje original-----
De: comis@yahoogroups.com [mailto:comis@yahoogroups.com] En nombre de David Bradley
Enviado el: Martes, 20 de Enero de 2009 11:42 a.m.
Para: comis@yahoogroups.com
Asunto: [comis] Cp Values for a solar chimney

Colleagues,
I am attempting to model a clerestory building. On the lower roof
there are a number of solar chimneys that rise above the roof but not so
high as the peak of the clerestory. I am struggling a bit with how to
estimate the wind pressure coefficients (Cp values) of the chimney tops
so that I can calculate the wind-driven part of their air flow. I have
used the TNO CpGenerator tool to obtain Cp values for the roof surfaces
themselves. Does anyone have any experience or suggestions as to how Cp
might vary for positions above the lower roof surface? Any suggestions
would be appreciated.
Kind regards,
David

PS if my explanation of the building configuration is unclear, please
let me know and I would be happy to email a sketch of what I am trying
to model.

--
***********************************************************************
Thermal Energy System Specialists (TESS), LLC
David BRADLEY 22 N. Carroll Street - Suite 370
Partner Madison, WI 53703
USA
P: +1.608.274.2577
F: +1.608.278.1475
E-mail: bradley@tess-inc.com
Web Pages: http://www.tess-inc.com and http://www.trnsys.com

***********************************************************************



Thu Jan 22, 2009 4:32 am

mtbmexico
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Message #854 of 858 |
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Colleagues, I am attempting to model a clerestory building. On the lower roof there are a number of solar chimneys that rise above the roof but not so high as...
David Bradley
tesstrnsys
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Jan 20, 2009
5:42 pm

Dear David The pressure coefficient at the end of a chimney is a combination the Cp value on the considered position above the roof and on the Cp value of the...
Andreas Weber
andreas_webe...
Offline Send Email
Jan 21, 2009
12:57 pm

David, in the past TNO has done wind tunnel research on that topic. It was the basis for Dutch regulations for exhaust outlet and chimney positions above the...
Knoll, B. (Bas)
basknoll
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Jan 21, 2009
1:01 pm

Try this: Experimental and Theoretical Studies of a Solar Chimney with Uniform Wall Heat Flux by Jónas Halldórsson and Christian Byrjalsen Aalborg University...
Eric Hernández De...
mtbmexico
Offline Send Email
Jan 22, 2009
4:33 am

Dear David, I can provide some reference values for you. However, it may not be the best case to use any "reference" data due to the strong dependence between...
Daniel Cóstola
daniel_costola
Offline Send Email
Jan 23, 2009
12:38 pm
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