Multi-objective optimization of energy and greenhouse gas emissions in water pumping and treatment
| Autor: | Iliana Cardenes, Mohammad Mortazavi Naeini, Afreen Siddiqi, Jim W. Hall |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Water pumping
Greenhouse Effect Environmental Engineering business.industry 0208 environmental biotechnology Water supply Water 02 engineering and technology Energy consumption 010501 environmental sciences Environmental economics 01 natural sciences Multi-objective optimization 020801 environmental engineering Greenhouse Gases Water Supply Greenhouse gas Supply network Environmental science Cities business Greenhouse effect 0105 earth and related environmental sciences Water Science and Technology Efficient energy use |
| Zdroj: | Water science and technology : a journal of the International Association on Water Pollution Research. 82(12) |
| ISSN: | 0273-1223 |
| Popis: | A large part of operating costs in urban water supply networks is usually due to energy use, mostly in the form of electricity consumption. There is growing pressure to reduce energy use to help save operational costs and reduce carbon emissions. However, in practice, reducing these costs has proved to be challenging because of the complexity of the systems. Indeed, many water utilities have concluded that they cannot practically achieve further energy savings in the operation of their water supply systems. This study shows how a hybrid linear and multi-objective optimization approach can be used to identify key energy consumption elements in a water supply system, and then evaluate the amount of investment needed to achieve significant operational gains at those points in the supply network. In application to the water supply system for the city of London, the method has shown that up to 18% savings in daily energy consumption are achievable. The optimal results are sensitive to discount rate and the financial value placed on greenhouse gas emissions. Valuation of greenhouse gas emissions is necessary to incentivise high levels of energy efficiency. The methodology can be used to inform planning and investment decisions, with specific focus on reducing energy consumption, for existing urban water supply systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|