User

Password

Recupero Password

Path: Home » Indice Pubblicazioni » Convegni ATI - Accesso riservato soci CTI » CA - 63 - Palermo 2008 » Applications of radiant floor cooling...

Convegni ATI - Accesso riservato soci CTI

Applications of radiant floor cooling systems

Pubblicazione

Data: 10/09/2010

Autore: Bjarne W. Olesen

Collana: CA - 63 - Palermo 2008

Note:
The use of floor heating has been know since more than 3000 years from the Chinese Khang, the Korean Ondol, the Romans hypocaust to days modern water based systems embedded in the floor construction. The application of such systems also for cooling is however less known. To evaluate the usefulness of radiant floor cooling it is important to take into account comfort, cooling capacity, control and design. One limiting factor is the floor surface temperature. In spaces with seated or people the floor temperature should not be lower than 20 °C for comfort reasons. For higher activity levels a lower floor
surface temperature may be acceptable and the limitation will then be the dew point temperature in the space. The heat exchange coefficient between a cooled floor and the room is typically around 7 W/m² °C where 5.5 W/m² °C is radiant heat transfer. In spaces with mainly seated occupants the upper comfort limit for the operative temperature in summer is 26 °C. This means that based on the heat exchange between the floor surface and the room a maximum cooling capacity for a floor system is 40-50 W/m². In several spaces like atrium, entrance hall or other spaces with window facades there will often be a lot of direct sunshine on the floor. In these cases the cooling capacity is significant higher and may reach 100-150 W/m². The influence of these parameters is discussed in the paper and several applications are presented.


Per scaricare il Documento devi essere loggato!



Viale Elvezia, 12 - 20154 Milano
Tel. +39 02 266.265.1
Fax +39 02 266.265.50
P.IVA 11494010157

Social CTI

Seguici!

Twitter LinkedIn

Disclaimer - Privacy