Exergy destruction analysis of heat exchanger in waste heat recovery system in Kroll process
by Wenhao Wang; Fuzhong Wu
International Journal of Exergy (IJEX), Vol. 22, No. 1, 2017

Abstract: In pilot-scale tests of a waste heat recovery system designed for Kroll process, energy and exergy efficiency were only 30% and 10%, and there is no judgement about this system. In present work, the exergy destruction analysis is used to investigate heat transfer and effectiveness of the system. The water with the flow rate of 0.12 kg/s, 0.14 kg/s and 0.16 kg/s is forced across a shell-tube heat exchanger, while the air flow rate is 22 m3/min with a temperature range of 350∼380°C. The results show that higher air inlet temperature is good for all indicators, while greater water mass flow rate is only good for heat transfer rate, irreversible heat transfer rate and water side irreversibility ratio. The energy and exergy effectiveness have a similar trend. From the viewpoint of energy quality and quantity, the tested shell-and-tube heat exchanger system can still be used to recover waste heat in Kroll process.

Online publication date: Mon, 26-Dec-2016

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Exergy (IJEX):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com