Energy performance comparison between two liquid desiccant and evaporative cooling-assisted air conditioning systems

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This study investigated the annual energy saving potential and system performance of two different evaporative cooling-based liquid desiccant and evaporative cooling-assisted air conditioning systems. One system used an indirect and direct evaporative cooler with a two-stage package to match the target supply air point. The other was equipped with a single-stage, packaged dew-point evaporative cooler that used a portion of the process air, which had been dehumidified in advance. Systems installed with the two evaporative coolers were compared to determine which one was more energy efficient and which one could provide better thermal comfort for building occupants in a given climate zone, using detailed simulation data. The detailed energy consumption data of these two systems were estimated using an engineering equation solver with each component model. The results showed that the liquid desiccant and dew-point evaporative-coolerassisted 100% outdoor air system (LDEOAS) resulted in approximately 34% more annual primary energy consumption than that of the liquid desiccant and the indirect and direct evaporative-coolerassisted 100% outdoor air system (LDIDECOAS). However, the LDEOAS could provide drier and cooler supply air, compared with the LDIDECOAS. In conclusion, LDIDECOAS has a higher energy saving potential than LDEOAS, with an acceptable level of thermal comfort.

Original languageEnglish
Article number522
JournalEnergies
Volume13
Issue number3
DOIs
StatePublished - 2020

Keywords

  • Dew point indirect evaporative cooler
  • Energy simulation
  • Evaporative cooler
  • Liquid desiccant system

Fingerprint

Dive into the research topics of 'Energy performance comparison between two liquid desiccant and evaporative cooling-assisted air conditioning systems'. Together they form a unique fingerprint.

Cite this