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A feasibility study of a ventilated beam system in the hot and humid climate:
a case-study approach
, and Freddie Tanb
aHalton Oy, Haltonintie 1-3, 47400 Kausala, Finland
bCapitaLand Commercial Ltd., 39 Robinson Road, Singapore 068911, Singapore
Received 26 May 2003; accepted 2 November 2004. Available online 19 December 2004.
Risto Kosonena, , and Freddie Tanb
The applications of ventilated beam systems in the hot and humid climate are limited. The main reason is the high risk of condensation. A case-study measurement was conducted in a typical office building in Singapore to investigate the feasibility of a ventilated beam system in the Tropics. The results show that the condensation in the beam system is possible to prevent and to reach dry cooling if infiltration is minimized, supply airflow rate is sufficient to extract humidity of people and tuning of the automation system has conducted probably.
Keywords: Ventilated beams; Air–water systems; Humidity
control; Hot and humid climate
|Design conditions||Conference room||Office|
|Indoor temperature (°C)||23||23|
|Relative humidity (%)||60||60|
|Room area (m2)||56||20|
|Sensible load (W)||2360||1780|
|Specific load (W/m2)||42||89|
|Number of persons||20||3|
|Off-coil temperature (°C)||14||14|
|Air flow rate (l/s)||147||56|
|Water inlet (°C)||16||16|
|Water outlet (°C)||18||18|
|Water inlet and outlet temperature||Type T thermocouple wire|
|Room air relative humidity||Portable data logger||±5% RH|
|Room air drybulb temperature||Portable data logger|
|Relative humidity (%)||Temperature ( °C)|
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Volume 40, Issue 9 , September 2005, Pages 1164-1173
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