Next Article in Journal
Molecular Science of Lubricant Additives
Next Article in Special Issue
Computational Fluid Dynamics Analysis of Cold Plasma Plume Mixing with Blood Using Level Set Method Coupled with Heat Transfer
Previous Article in Journal
Shear Strengths of Different Bolt Connectors on the Large Span of Aluminium Alloy Honeycomb Sandwich Structure
Previous Article in Special Issue
Thermal Optimization of Horizontal Tubes with Tilted Rectangular Fins under Free Convection for the Cooling of Electronic Devices
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Appl. Sci. 2017, 7(5), 448; doi:10.3390/app7050448

Experimental Study on Heat Transfer Performance of Vacuum Tube Heat Collector with Thermal Storage

School of Energy and Environment, Southeast University, Nanjing 210096, China
Jiangsu Provincial Key Laboratory of Solar Energy Technology, Nanjing 210096, China
Author to whom correspondence should be addressed.
Academic Editor: Xianchang Li
Received: 11 March 2017 / Revised: 25 April 2017 / Accepted: 25 April 2017 / Published: 28 April 2017
(This article belongs to the Special Issue Advances in Thermal System Analysis and Optimization)
View Full-Text   |   Download PDF [2142 KB, uploaded 28 April 2017]   |  


This experimental study is intended to explore the heat performance of a novel vacuum tube heat collector with thermal storage. In order to enhance the heat transfer performance, we add radial metal fins to the U-tube which is used as the heat transfer channel of water. Meanwhile, in order to increase the thermal capacity of the heat collector, the heat collector model is designed to be larger than the general collector and is filled with the phase change materials (PCMs). In the U-tube, paraffin is chosen as the PCM. Then, during the experiment, to study the energy absorption and desorption characteristics of the heat collector, we chose to test during the day and night in the summer and the transition season. The experimental results show that, at night, the outlet water temperature of the vacuum tube heat collector has been enhanced by using PCM. The outlet water temperature decreases with the increase of flow rate. View Full-Text
Keywords: PCM; solar water heat collector; paraffin; thermal energy storage; U-tube PCM; solar water heat collector; paraffin; thermal energy storage; U-tube

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Huang, X.; Chen, Z.; Shi, J. Experimental Study on Heat Transfer Performance of Vacuum Tube Heat Collector with Thermal Storage. Appl. Sci. 2017, 7, 448.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top