Journal Browser

► Journal Browser

Special Issue "Waste Heat Recovery and Utilization"

Share This Special Issue

Special Issue Editor

E-Mail Website
Guest Editor

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: waste energy; renewable energy; energy storage; thermal heat-driven cooling; heating; desalination; power generation

Special Issue Information

Dear Colleagues,

Waste heat utilization is critical for the efficient usage of energy, including waste heat-driven heating, cooling, power generation, dehumidification, desalination technologies, etc. Sorption technology is one of the most promising methods to utilize low-grade energy. Recently, the volume of research on sorption systems has been growing rapidly, including new materials, advanced thermodynamic cycles, heat, and mass transfer enhancement, control strategy optimization, new prototypes, application cases, etc. An academic platform to exhibit the latest development in sorption cooling, desalination, energy storage, and heating is urgently needed.

The main limitations of sorption systems are the low energy efficiency and the large system size. This research topic will aim at problems of low adsorption capacity of adsorbents, the poor performance of heat and mass transfer, and low system performance problems. The recent advances include advanced adsorbents. For example, more MOFs (metal-organic frameworks) and compound adsorbents have been investigated. As for the advanced cycle, some combined cycles of adsorption cooling, heating, and power, driven by low-grade thermal energy are studied. The generator can be driven by the high-temperature and high-pressure adsorbate vapor because adsorption capacity, energy storage density, and the adsorption potential energy conversion capacity of the compound MOF adsorbents are 2–5-times higher than that of traditional physical adsorbents. Meanwhile, the desorbed vapor can be condensed for desalination. Hence, the combined adsorption cooling, heating, desalination, and power cycle can be realized; the sorption heat transformer cycle can improve the grade of heat through grade-lifting technologies. Topics on the advances in these energy systems with better performance, adaptability, and reliability are interesting, as well as efficient integration of these energy systems. We also welcome novel applications, such as water harvesting, deep dehumidification, carbon capture, and utilization.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

The specific themes may include:

(1) Novel adsorbents: such as the MOFs, compound adsorbents, heat and mass transfer improvement of adsorbents, etc.

(2) New cycles: such as the new cycle of sorption cooling, heating, energy storage, desalination, power generation, etc.

(3) New applications: such as sorption technologies for carbon capture, hydrogen storage, and production, water harvester, cooling, heat pump, etc.

I look forward to receiving your contributions.

Dr. Zisheng Lu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

sorption
cooling
heating
energy storage
power generation
dehumidification

Published Papers (1 paper)

Order results

Result details

Show export options Show export options

Select all

Export citation of selected articles as:

Research

Open AccessArticle

Influence of Cooling Water Flow Rate on Start and Heat Transfer Performance of Pulsating Heat Pipe at Different Inclination Angles

and

Sustainability 2023, 15(3), 1921; https://doi.org/10.3390/su15031921 - 19 Jan 2023

Cited by 1 | Viewed by 996

Abstract

Pulsating heat pipe (PHP) is an efficient heat transfer technology applied in the fields of heat dissipation and energy utilization. There are many factors affecting the heat transfer of PHP, including working fluid, filling ratio, inclination angle, etc. The cooling capacity of the cooling water system at the condensing section to the working fluid is also an important factor affecting the starting and operating of PHP. The research on PHP at different cooling water flow rates is of great significance for enhancing the operating performance. An experimental investigation of starting and running performance is carried out on a closed loop PHP with ultrapure water under different inclination angles of 90°, 60° and 30°. The starting and heat transfer performance of PHP with a filling ratio of 50% is obtained by adjusting the heat input in the range of 30–210 W at different cooling water flow rates of 6.7 g/s, 9.7 g/s and 13.9 g/s. The temperature and heat transfer resistance are used for analyzing the heat transfer performance. The results show that the starting mode, initial pulsating temperature and different heat transfer effects are brought about by different cooling water flow rates. It is observed that the cooling water flow rate has no obvious influence on the starting mode of PHP and that the starting mode of PHP is temperature progressive, starting with the increase in cooling water flow rates at a heating input of about 30 W. The influence of cooling water flow rates on the heat transfer performance of PHP is affected in a different way by inclination angles. The heat transfer performance of PHP with an inclination angle of 90° is similar at 6.7 g/s, 9.7 g/s and 13.9 g/s but, under the condition of 60° and 30°, the heat transfer resistance drops within a certain range effectively with an increasing cooling water flow rate from 6.7 g/s to 9.7 g/s and the heat transfer performance does not change significantly with the cooling water flow rate increasing to 13.9 g/s. Thus, there is an optimal value for the cooling water flow rate during the operating of PHP. The inclination angle also has an important effect on the temperature pulsating, and the temperature of PHP affected by gravity is stable with an inclination angle of 90°. However, the reduced influence of gravity on the backflow of the working fluid drops when the inclination angle decreases from 90° to 30°, and the wall temperature increases due to local overheating when the high heat input occurs. Full article

(This article belongs to the Special Issue Waste Heat Recovery and Utilization)

► Show Figures

Journal Menu

Journal Browser

Special Issue "Waste Heat Recovery and Utilization"

Share This Special Issue

Special Issue Editor

Special Issue Information

Keywords

Published Papers (1 paper)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI