Cover Image

Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options

Water and energy are closely interlinked together. The goal to reduce water and energy simultaneously has been a growing research. However, previous studies only consider maximising water reuse and, in some cases, also include water regeneration. This study aims to develop a mathematical model to de...

Full description

Saved in:
Bibliographic Details
Main Author: Mansor, Lily Syafikah
Format: Thesis
Language:English
Published: 2018
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/85919/1/LilySyafikahMansorMSChE2018.pdf
http://eprints.utm.my/id/eprint/85919/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131983
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.85919
record_format eprints
spelling my.utm.859192020-07-30T07:38:36Z http://eprints.utm.my/id/eprint/85919/ Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options Mansor, Lily Syafikah TP Chemical technology Water and energy are closely interlinked together. The goal to reduce water and energy simultaneously has been a growing research. However, previous studies only consider maximising water reuse and, in some cases, also include water regeneration. This study aims to develop a mathematical model to design water and energy network that further reduces the water consumption, considering the whole water management hierarchy (WMH) schemes. This includes elimination, reduction, reuse, outsourcing and regeneration. Two steps solution is proposed, which involves solving two MINLP models. First, water and energy minimisation network considering WMH schemes and direct heat transfer is designed. The obtained network is then improved by inclusion of indirect heat integration to minimise the objective cost function. Two cases of thermal data extraction are studied for heat integration, Case A extracts individual streams based on supply and targeted temperature, whereas Case B extracts stream after mixer based on mixer temperature and targeted temperature. Streams which temperature load is satisfied in direct heat transfer were excluded for heat integration. The proposed method has been tested with literature case study. The implementation of all possible WMH scheme yields a lower freshwater consumption and wastewater generation. The model selected 35% and 15% of reduction for demand 3 and demand 1 respectively. Case A yields a lower total operating cost but slightly higher investment cost compared to Case B. Case B result in a simpler heat exchanger network, but degradation of the potential energy causes more heating and cooling. Case A is chosen as the optimal network and exhibits 13% reduction of the total cost compared to the literature case study. 2018 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/85919/1/LilySyafikahMansorMSChE2018.pdf Mansor, Lily Syafikah (2018) Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options. Masters thesis, Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131983
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Mansor, Lily Syafikah
Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
description Water and energy are closely interlinked together. The goal to reduce water and energy simultaneously has been a growing research. However, previous studies only consider maximising water reuse and, in some cases, also include water regeneration. This study aims to develop a mathematical model to design water and energy network that further reduces the water consumption, considering the whole water management hierarchy (WMH) schemes. This includes elimination, reduction, reuse, outsourcing and regeneration. Two steps solution is proposed, which involves solving two MINLP models. First, water and energy minimisation network considering WMH schemes and direct heat transfer is designed. The obtained network is then improved by inclusion of indirect heat integration to minimise the objective cost function. Two cases of thermal data extraction are studied for heat integration, Case A extracts individual streams based on supply and targeted temperature, whereas Case B extracts stream after mixer based on mixer temperature and targeted temperature. Streams which temperature load is satisfied in direct heat transfer were excluded for heat integration. The proposed method has been tested with literature case study. The implementation of all possible WMH scheme yields a lower freshwater consumption and wastewater generation. The model selected 35% and 15% of reduction for demand 3 and demand 1 respectively. Case A yields a lower total operating cost but slightly higher investment cost compared to Case B. Case B result in a simpler heat exchanger network, but degradation of the potential energy causes more heating and cooling. Case A is chosen as the optimal network and exhibits 13% reduction of the total cost compared to the literature case study.
format Thesis
author Mansor, Lily Syafikah
author_facet Mansor, Lily Syafikah
author_sort Mansor, Lily Syafikah
title Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
title_short Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
title_full Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
title_fullStr Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
title_full_unstemmed Mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
title_sort mathematical modelling of simultaneous water and energy minimisation considering water management hierarchy options
publishDate 2018
url http://eprints.utm.my/id/eprint/85919/1/LilySyafikahMansorMSChE2018.pdf
http://eprints.utm.my/id/eprint/85919/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131983
_version_ 1674066227652198400
score 13.223943

Similar Items