Energy conservation of small water to water heat pump assisted by solar collector for residential application

Article Sidebar

PDF
Published: Jul 25, 2018
Keywords:
Heat pump Solar collector ASHRAE 93-77 EN255-3 COP

Main Article Content

A. Kaewpradap
Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, BangMod, ThungKhru, 10140, Thailand
S. Sanitjai
Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, BangMod, ThungKhru, 10140, Thailand

Abstract

Increase of heat pump utilization affected to higher energy consumption for all sections. In order to reduce energy consumption for heat pump, solar collector was selected to assist heating of water temperature due to solar radiation. This study focused on coefficient of performance (COPt) and energy consumption of small water to water heat pump operated with solar collector for residential application. Firstly, solar collector was tested and followed by ASHRAE 93-77 then 70.5 % of efficiency was obtained. Secondary, small heat pump operated by R410a as refrigerant was experimented with 300 liters of water and followed by EN255-3 then 1.53 of COPt and 7.02 kWh/D of average energy consumption were resulted. When small heat pump operated with solar collector to reach 50°C of hot water, 1.77 kWh/D or 25.2% of average energy consumption was lower compared to operation only small heat pump. This study was concluded that small heat pump assisted by solar collector was applicable for energy conservation in residential application.

Article Details

How to Cite
Kaewpradap, A., & Sanitjai, S. (2018). Energy conservation of small water to water heat pump assisted by solar collector for residential application. Journal of Research and Applications in Mechanical Engineering, 6(1), 21–28. Retrieved from https://ph01.tci-thaijo.org/index.php/jrame/article/view/136533
Issue
Vol. 6 No. 1 (2018)
Section
RESEARCH ARTICLES

by-nc-sa

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

References

[1] Department of Alternative Energy Development and Efficiency. SEC project, 2004, Ministry of Energy, Bangkok.

[2] Techato, K. Heat pump market in Thailand, Energy Procedia, Vol. 14, 2012, pp. 9-13.

[3] Kaewpradap, A. Ohnjaikla, N. and Sanitjai, S. Investigation of load variations with seasonal conditions affected to coefficient of performance of air to water heat pump, Journal of Research and Applications in Mechanical Engineering, Vol.4(2), 2016, pp. 175-182.

[4] Chaiwongsa,P. and Duangthongsuk, W. Hot water making potential using of a conventional air-conditioner as an air-water heat pump, Procedia Engineering, Vol.8, 2011, pp. 165-170.

[5] Ramadan, M., Murr, R., Khaled, M. and Olabi, A.G. Mixed numerical-experimental approach to enhance the heat pump by drain water heat recovery, Energy, Vol.149, 2018, pp. 1010-1021.

[6] Shusue, X. Ruochen, D. Jianhui, N. and Guoyuan, M. Investigation of air-source heat pump using heat pipes as heat radiator, Int. J. Refrigeration, Vol. 90, 2018, pp. 91-98.

[7] Wang, F. Zhao, Y. Quan, Z. and Tong, J. Application of a multi-function solar-heat pump system in residential buildings, Appl. Therm. Eng., Vol. 130, 2018, pp. 922-937.

[8] Lee, S.J. Shon, B.H. Jung, C.W. and Kang, Y.T. A novel type solar assisted heat pump using a low GWP refrigerant (R-1233zd) with the flexible solar collector, Energy, Vol. 149, 2018, pp. 386-396.

[9] Open Energy Information, Solar Resources by Class per Country, National Renewable Energy Laboratory, Colorado, USA, URL: http://en/openi.org/datasets/node/498, accessed on 01/04/2018, 2015.

[10] Department of Alternative Energy Development and Efficiency. The solar map, 2002, Ministry of Energy, Bangkok.