Desalination using low grade heat in the process industry: Challenges and perspectives
- Lookup NU author(s)
- Dr Yasmine Ammar
- Dr Patricia Thornley
- Professor Tony Roskilly
|
|
|
|
| Author(s) | | Ammar Y, Hanning Li, Walsh C, Thornley P, Sharifi V, Roskilly AP |
| Publication type | | Article |
| Journal | | Applied Thermal Engineering |
| Year | | 2012 |
| Volume | | 48 |
| Issue | | |
| Pages | | 446-457 |
| ISSN (print) | | 1359-4311 |
| ISSN (electronic) | | 1873-5606 |
|
|
|
| Full text for this publication is not currently held within this repository. Alternative links are provided below where available. |
|
|
|
|
| This paper examines the use of lowgradeheat from process industries for thermal desalinationprocesses as this is relevant not only to current energy conservation schemes but also may play a role in increasing the capacity to satisfy future water demands. The study focuses on lowgradeheat sources from a paper mill located on a British coastal area which presents a large quantity of recoverable waste heat at low temperature (<100 °C). Two scenarios are considered: (i) lowgradeheat is used directly to feed the desalinationprocess, (ii) lowgradeheat is upgraded using a heat pump coupled with a desalination system.In the first scenario, a Humidification Dehumidification process was identified as a suitable technology due to its low operating temperature. In the second scenario, the lowgradeheat temperature was upgraded using a hybrid absorption heat pump and subsequently used to feed a Multiple Effect Distillation desalination system. These two cases were compared in terms of performances and economics. For both cases, a payback period of less than 10 years could be obtained for water price equal to £2 per tonnes of water. This is comparable to the price of home water supply. Environmental aspects were also discussed from the results of a full Lifecycle assessment. Lowgradeheat utilisation in both cases reduced the Global Warming Potential in comparison with fossil fuel powered systems, but toxicological impacts appeared higher in comparison to a system using natural gas. |
|
|
|
| Publisher | | Pergamon |
| URL | | http://dx.doi.org/10.1016/j.applthermaleng.2012.05.012 |
| DOI | | 10.1016/j.applthermaleng.2012.05.012 |
|
|
Actions | |   |
