The Experimental Study of the Heat Flux and Energy Consumption on Variable Flow Rate for Secondary Side of DHS

Autor: Sung-Hwan Cho, Seong-Ki Hong
Rok vydání: 2015
Předmět:
Zdroj: Korean Journal of Air-Conditioning and Refrigeration Engineering. 27:247-253
ISSN: 1229-6422
DOI: 10.6110/kjacr.2015.27.5.247
Popis: The presented work demonstrates the effects of flow rate on the secondary side of DHS (District Heating System). Increasing flow rate at the secondary side of DHS decreases energy consumption and time to reach the set-point of the heated room while increasing heat flux on the floor in the heating space. When flow rate increases, the overall heat transfer rate of radiant floor also increases. However, the results also show overall heat transfer rateto not increased linearly and thus the existence of an optimal flow rate for the secondary side of DHS. Control of the radiant floor with hot water may be more effectively accomplished with a combined control strategy that includes heat flux and a temperature set-point. This experimental analysis has been performed using a lab-scaled DHS pilot plant located at Jeonju University in Korea.
Databáze: OpenAIRE