Abstract
The paper presents an experimental investigation of a steam ejector in a single-effect thermal vapor compression (S-TVC) desalination system driven by a low-temperature (below 100 °C) heat source. To investigate the performance of the steam ejector in the S-TVC desalination system, an experimental steam ejector system was designed and built. The influences of the nozzle exit position (NXP), operating temperatures, and the area ratio of the ejector (AR) on the steam ejector performance were investigated at primary steam temperatures ranging from 40 °C to 70 °C, and at secondary steam temperatures ranging from 10 °C to 25 °C. The experimental results showed that the steam ejector can work well in the S-TVC desalination system driven by a low-temperature heat source below 100 °C. The steam ejector could achieve a higher coefficient of performance (COP) by decreasing the primary steam temperature, increasing the secondary steam temperature, and increasing the AR. The steam ejector could also be operated at a higher critical condensation temperature by increasing the primary steam temperature and secondary steam temperature, and decreasing the AR. This study will allow S-TVC desalination to compete with adsorption desalination (AD).
Highlights
Human life and production are inseparable from fresh water, which only makes up 2.5% of the total water resources
ConclusionsThe paper presents an experimental investigation of a steam ejector in an single-effect thermal vapor compression (S-thermal vapor vapourcompression compression (TVC)) desalination system driven by a low-temperature heat source
The effects of the operating temperatures, nozzle exit position (NXP), The paper presents experimental of a investigated steam ejector in an desalination and AR, on the an performance of the investigation steam ejector were at the primary steam temperatures ranging from 40 °C heat to 70 °C, and theThe secondary temperatures ranging from 10 °C NXP, and system driven by a low-temperature source
Summary
Human life and production are inseparable from fresh water, which only makes up 2.5% of the total water resources. With the rapid development of the world economy and the population explosion, the shortage of freshwater resources has become a growing global environmental problem. Desalination technology is deemed an effective means to solve the problem. It is the process of utilizing heat, electricity, and other energy, to separate the dissolved mineral salts, organisms, bacteria, viruses, and solids in seawater. Multi-effect distillation (MED), multi-stage flash, and reverse osmosis are the commercial desalination technologies widely applied in the industry. Total global desalination capacity was around 74.8 million m3 /d in 2011, 63% of the total capacity was produced by reverse osmosis, 23%
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call