Maximum-power-point tracking control of solar heating system

Huang, Bin‐Juine; Ton, Wei-Zhe; Wu, Chia Chang; Ko, Hua-Wei; Chang, H. C.; Yen, Ruey‐Hor; Wang, Jiunn-Cherng

doi:10.1016/j.solener.2012.08.019

Cited by 10 publications

(1 citation statement)

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“…The effectiveness of the simple structure solar collector systems with compulsory circulation of the heat-transfer agent is from 0.43 to 0.60 (Gang et al, 2012;Ayompe and Duffy, 2013). It has been stated that operating the flow-rate speed of the heat-transfer agent of the solar collector system, the system effectiveness can be increased by using the less energy for the agent circulation (Huang et al, 2012). The small solar collector systems with evacuated tube solar collectors have not been widely investigated.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Energy Characteristics of Evacuated Tube Heat-Pipe Solar Collector System

Kavolynas

Drejeris

2015

Proceedings of the 7th International Scientific Conference Rural Development 2015

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Evacuated tube heat-pipe solar collector system with closed heat pipe has been experimentally investigated. Experiments have been fulfilled using the solar imitator whose energy irradiance on the surface of the solar collector at the constant ambient conditions is 800 W/m². Energy characteristics of the solar collector system with different flow -rates of the heat-transfer agent have been investigated using various flow-rate speeds of the heat-transfer agent. It has been stated that the increase of the flowrate of the heat-transfer agent in the system from 0.01 to 0.12 kg/s would minimize the average collector efficiency from 0.81 to 0.55. When the reduced flow-rate of the heat-transfer agent has been used in the system, the higher temperature of the hot water is reached in the storage tank and at the same time the temperature of the heat -transfer agent in the system is increased. Thus, more energy has been lost in the pipeline and hot water storage tank, but less energy is used for the circulation of the heat -transfer agent energy. Increasing the agent flow-rate speed in the system has reduced the heat losses in the pipeline, but more energy is used for the energy circulation of the heat-transfer agent. Therefore, the medium efficiency of the solar collector system has changed insignificantly (0.47 ± 0.01).

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Section: Introductionmentioning

confidence: 99%