Performance control of a spray passive down-draft evaporative cooling system

Research output: Contribution to journalArticle

Abstract

A spray passive down-draft evaporative cooling system has been regarded as a low-energy cooling system that leads significant energy savings in the cooling of buildings. While the energy saving capability of the system has been proven, the ability to control a comfortable indoor environment is still inadequate due to strong climatic dependency. This study seeks viable solutions to advance the control competence of the system by mitigating critical problems of the system to be a reliable cooling application in the cooling of buildings. It proposes potential control strategies for the system and alternative operations. It develops a control algorithm for the proposed control strategies and implements the algorithm in EnergyPlus. A simulation analysis follows to examine the functionality of each proposed control strategy and alternative operations. The results of the simulations ascertain that a spray PDEC system with a water flow control performs better. In addition, a spray PDEC system contributes most when it operates as a secondary cooling system to abate space cooling loads and to maintain a steady thermal environment by reducing 62.1% electricity for space cooling and 47.9% water consumption in a warm-moderate climate.

Original languageEnglish (US)
Pages (from-to)915-931
Number of pages17
JournalApplied Energy
Volume222
DOIs
StatePublished - Jul 15 2018

Fingerprint

Evaporative cooling systems
spray
Cooling
cooling
Cooling systems
Energy conservation
Flow control
Water
Electricity
flow control
simulation
water flow
electricity

Keywords

  • Building simulation
  • Control
  • Downdraft
  • Evaporative cooling
  • Indoor environment
  • Wind tower

ASJC Scopus subject areas

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

Performance control of a spray passive down-draft evaporative cooling system. / Kang, Daeho; Strand, Richard Karl.

In: Applied Energy, Vol. 222, 15.07.2018, p. 915-931.

Research output: Contribution to journalArticle

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