Classifications of central solar domestic hot water systems

2016 International Conference on New Energy and Future Energy System

Guo, J.Y.^1 ; Hao, B.^2 ; Peng, C.^3 ; Wang, S.S.^3

School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing

100044, China^1

Shen Zhen Institute of Building Research Co, LTD, Beijing

100080, China^2

Center of Science and Technology of Construction, Ministry of Housing and Urban-Rural Development, Beijing

100835, China^3

关键词: Auxiliary heating;    Classification system;    Field testing;    Heat sources;    Heat storage tanks;    Operational energy;    Solar domestic hot water systems;    Thermal Performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012011/pdf
DOI  :  10.1088/1755-1315/40/1/012011

来源: IOP

【 摘 要 】

Currently, there are many means by which to classify solar domestic hot water systems, which are often categorized according to their scope of supply, solar collector positions, and type of heat storage tank. However, the lack of systematic and scientific classification as well as the general disregard of the thermal performance of the auxiliary heat source is important to DHW systems. Thus, the primary focus of this paper is to determine a classification system for solar domestic hot water systems based on the positions of the solar collector and auxiliary heating device, both respectively and in combination. Field-testing data regarding many central solar DHW systems demonstrates that the position of the auxiliary heat source clearly reflects the operational energy consumption. The consumption of collective auxiliary heating hot water system is much higher than individual auxiliary heating hot water system. In addition, costs are significantly reduced by the separation of the heat storage tank and the auxiliary heating device.