RT info:eu-repo/semantics/article
T1 Influence of constructive parameters on the performance of two indirect evaporative cooler prototypes
A1 Tejero González, Ana
A1 Andrés Chicote, Manuel
A1 Velasco Gómez, Eloy
A1 Rey Martínez, Francisco Javier
K1 Eficiencia energética
K1 Climatización
K1 Edificios
K1 Enfriamiento evaporativo
K1 Indirect evaporative cooling
K1 Heat recovery
K1 Plastic heat exchanger
K1 Heat exchange area
K1 Cooling capacity
K1 Thermal conductance
K1 3322
AB Two equally-sized cross-flow heat exchanger prototypes have been designed with a total heat exchange area of 6 m2 and 3 m2 respectively, constructed with polycarbonate hollow panels of different cross-section. They are connected into a heat recovery cycle within the whole experimental setup constructed for the tests, which mainly consists of: an Air Handling Unit to simulate the outdoor airstream conditions, a conditioned climate chamber, and a water circuit to provide the water supply required. They have been experimentally characterised in two operating modes in order to determine how evaporative cooling improves heat recovery in each case, focusing on the influence of modifying the constructive characteristics. To perform the evaporative cooling process, water is supplied to the exhaust airstream. Results are studied considering how constructive issues, outdoor air volume flow rate and temperature, as well as operating mode influence on the performance obtained. An Analysis of Variance shows how outdoor airflow has a key role in the performance of the systems; whereas entering outdoor air temperature determines cooling capacities. Improvements introduced by larger heat exchange areas compensate with their corresponding smaller cross sections, which hinder water-air distribution on the exhaust air side of the heat exchanger. Finally, these small devices achieve cooling capacities of up to 800 W, being able to partly support ventilation load and achieving around 50% of energy saving in ventilation cooling.
PB Elsevier
SN 1359-4311
YR 2013
FD 2013
LK http://uvadoc.uva.es/handle/10324/41457
UL http://uvadoc.uva.es/handle/10324/41457
LA spa
NO Applied Thermal Engineering,  Marzo 2013, vol. 51, Issues 1-2, p. 1017-1025
NO Producción Científica
DS UVaDOC
RD 28-dic-2024