99 0

Performance evaluation and optimization of humidification–dehumidification desalination system for low-grade waste heat energy application

Title
Performance evaluation and optimization of humidification–dehumidification desalination system for low-grade waste heat energy application
Author
라비찬드란 산토쉬
Keywords
Humidification–dehumidification; Waste heat; Desalination; Seawater; Potable water
Issue Date
2022-03
Publisher
ELSEVIER
Citation
DESALINATION, NO 526, Page. 115516-115516
Abstract
A humidification–dehumidification desalination system powered by low-grade waste heat energy (45 ◦C–70 ◦C) was experimentally investigated. The seawater directly utilized as coolant (25 ◦C) for the dehumidifier was preheated by latent heat recovery from the water vapor produced by the humidifier. The effect of key performance-contributing factors such as the mass flow rate and temperature of the air and feed at the inlets of the humidifier and dehumidifier were evaluated and optimized. For a constant volume, the effect of the hu- midifier's surface area was evaluated comparatively considering different novel packing materials such as tri- pack rings, pall rings (diameter = 16 mm and 25 mm), saddle rings, and snowflake rings. It was determined that compared to other factors, air-related and water-related parameters influenced the humidifier and dehu- midifier performance respectively. Maximum freshwater productivity of 1398 mL/h was achieved with 16 mm pall ring humidifier, owing to its improved wet area (188,000 m2/m3) under optimal conditions of air flow rate, feed flow rate, humidifier air inlet temperature, humidifier, and dehumidifier water inlet temperatures of 3.5 kg/ min, 0.9 L/min, 70 ◦C, 55 ◦C, and 25 ◦C, respectively, with a dual-fluid preheating mechanism. Detailed chemical analysis revealed that the generated freshwater is potable.
URI
https://www.sciencedirect.com/science/article/pii/S0011916421005877https://repository.hanyang.ac.kr/handle/20.500.11754/170802
ISSN
0011-9164
DOI
10.1016/j.desal.2021.115516
Appears in Collections:
RESEARCH INSTITUTE[E](부설연구소) > RESEARCH INSTITUTE OF ENGINEERING & TECHNOLOGY(공학기술연구소) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE