Abstract:Flat plate-type solar water distillation (FPSWD) is having importance for providing hot water and drinking water simultaneously to households in rural areas or small community/hotels. It utilizes solar radiation to heat the water, produce fresh water out of the saline or brackish water, and also produce hot water. The paper is focused on field performance of inclined FPSWD for domestic and commercial applications. Field Performance data of inclined FPSWD has been recorded during summer and winter. It observed … Show more
“…They improved the thermal efficiency with low cost. Sahoo et al (2016) investigated experimentally several parameters such as solar tilt global radiation, hot water temperature, the flow rate of water distillation and the flow rate of hot brackish of water distillation. Ullah et al (2017) concluded that when the ambient temperature is low, double glass cover heat preservation effect is more obvious and the instantaneous efficiency is highest.…”
This study aims to study experimentally with and without the effects of small air bubble injection on the efficiency of a flat plate solar collector with tube rises for open flow system. The variation of the thermal efficiency of the solar flat plate collector due to both different of the water flow rate and due to the air bubbles injection with air flow rates are evaluated. A new experimental procedure for injecting small air bubbles into the riser tubes of solar flat plate collector is proposed. The comparison between the effects of forced water flow rates and air bubbles injection on the solar flat plate thermal efficiencies with a variation of solar radiation intensity were investigated. Water and air flow rate were changed between 1.5-2.5 LPM with inlet water temperature ranged between 19-23.5°C. Observations showed that the injecting of air bubbles inside the solar flat plate tubes risers play key roles on the effect of thermal efficiency more than that of using the water flow rate without air bubbles injection. Small air bubbles injecting into the risers tubes of the flat solar collector causes enhancement of the thermal efficiency and it increased 3.5-5.25% depending on air flow rate.
“…They improved the thermal efficiency with low cost. Sahoo et al (2016) investigated experimentally several parameters such as solar tilt global radiation, hot water temperature, the flow rate of water distillation and the flow rate of hot brackish of water distillation. Ullah et al (2017) concluded that when the ambient temperature is low, double glass cover heat preservation effect is more obvious and the instantaneous efficiency is highest.…”
This study aims to study experimentally with and without the effects of small air bubble injection on the efficiency of a flat plate solar collector with tube rises for open flow system. The variation of the thermal efficiency of the solar flat plate collector due to both different of the water flow rate and due to the air bubbles injection with air flow rates are evaluated. A new experimental procedure for injecting small air bubbles into the riser tubes of solar flat plate collector is proposed. The comparison between the effects of forced water flow rates and air bubbles injection on the solar flat plate thermal efficiencies with a variation of solar radiation intensity were investigated. Water and air flow rate were changed between 1.5-2.5 LPM with inlet water temperature ranged between 19-23.5°C. Observations showed that the injecting of air bubbles inside the solar flat plate tubes risers play key roles on the effect of thermal efficiency more than that of using the water flow rate without air bubbles injection. Small air bubbles injecting into the risers tubes of the flat solar collector causes enhancement of the thermal efficiency and it increased 3.5-5.25% depending on air flow rate.
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