An Innovative Design for a Solar Water Heating System Utilizing a Flat-Shaped Heat Pipe

Author:

Siritan Methida12,Vafai Kambiz2,Kammuang-Lue Niti3,Terdtoon Pradit3,Sakulchangsatjatai Phrut3

Affiliation:

1. Chiang Mai University Department of Mechanical Engineering, Faculty of Engineering, , Chiang Mai 50200 , Thailand ;

2. University of California Department of Mechanical Engineering, , Riverside, CA 92521

3. Chiang Mai University Department of Mechanical Engineering, Faculty of Engineering, , Chiang Mai 50200 , Thailand

Abstract

Abstract In this work, an innovative design for a solar water heating system using a flat-shaped heat pipe as a heat transfer device is presented to pave the way for a substantial increase in the thermal performance of these systems. An analytical study is utilized to investigate the thermal performance of the solar water heating system. The analytical results of the flat-shaped heat pipe system are compared with the results of the evacuated tube solar water heating system with a U-tube, thermosyphon, and closed-loop pulsating heat pipe. It is found that the water temperature difference between the inlet and outlet of the flat-shaped heat pipe system is substantially higher than the U-tube, thermosyphon, and closed-loop pulsating heat pipe system by as much as 31.4, 22.5, and 18.5 °C, respectively, at a nominal 0.6 l/min mass flowrate. Furthermore, utilizing the flat-shaped heat pipe in the solar water heating system optimizes the thermal conductivity of the solar setup due to a reduction in the condenser section length. These reductions also lead to a large reduction in the weight and cost of the system.

Funder

Thailand Research Fund

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

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