A new version of a solar water heating system coupled with a solar water pump

Sutthivirode, Kittiwoot; Namprakai, Pichai; Roonprasang, Natthaphon

doi:10.1016/j.apenergy.2008.12.002

Cited by 31 publications

(8 citation statements)

References 11 publications

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“…For many years solar collectors have been existed. In the current years their practices are undergoing resurgence due to the focus in renewable energy sources (Joshi, Bokil et al 2005, Lee and Sharma 2007, Sutthivirode, Namprakai et al 2009, Fong, Lee et al 2012, Tian and Zhao 2013. Flat plate solar collectors have been broadly used to enhance the working fluid temperature within the range of 30°C to 100°C.…”

Section: Introductionmentioning

confidence: 99%

Energy and exergy efficiency of a flat plate solar collector using pH treated Al2O3 nanofluid

Said

Saidur

Sabiha

et al. 2016

Journal of Cleaner Production

132

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Section: Introductionmentioning

confidence: 99%

Energy and exergy efficiency of a flat plate solar collector using pH treated Al2O3 nanofluid

Said

Saidur

Sabiha

et al. 2016

Journal of Cleaner Production

132

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“…However, most scholars still focused on the RSWHS [3] [4] [5]. Other scholars shifting to BWSWHS are interested in their thermal performance [6] [7] [8] [9]. Compared with RSWHS, BWSWHS incurs additional purchase expenses and gains less solar.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Balcony Wall-Mounted Solar Water Heating System in High-Rise Residential Buildings

Zhou¹,

He²,

Jia³

et al. 2019

JESTR

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The application of a solar water heating system is severely restricted by the limited roof area of high-rise buildings in urban areas. Therefore, the installation of a balcony wall-mounted solar water heating system (BWSWHS) on the facades of buildings has become an alternative solution. Annual conventional energy consumption and dynamic cost of three types of water heating systems were compared to prove the technical and economic feasibility of the BWSWHSs. First, the field measurement of the BWSWHS was conducted. Then, according to the principle of maximizing sunshine duration, the azimuth angle (AZ) of the building, suitable facade for installation, and optimal inclination angle of the collector were determined through sunshine simulation. Next, the annual heat gain and conventional energy consumption of the BWSWHSs were obtained from simulation using a verified model. Finally, annual energy consumption and dynamic cost of three types of water heating systems, namely, BWSWHS, electric and natural gas water heating systems, were compared. Results show that the optimal AZ of the building is 30° south by east, the suitable façade for installation is south, and the optimal inclination angle of the collector is 70°. In this case, the thermal efficiency of the collector is 44% and the solar fraction is 41%. Annual conventional energy consumption and dynamic cost are lower than that of the two other systems. The present study provides a basis for the promotion of the BWSWHS in residential high-rise buildings.

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“…It is therefore natural to tap this immense resource as it is not required to be explored, extracted, transported, mined, transmitted or imported. Solar thermal technology is employed for the purpose of collecting and converting the solar energy for applications such as water heating, air heating, cooking, drying, distillation, and irrigation (Singh, Kumar, and Tiwari 2011, Chow et al 2010, Kumar and Tiwari 2009, Sutthivirode, Namprakai, and Roonprasang 2009, Glasnovic and Margeta 2007, Ji et al 2007). The solar water heating is now a well-established technology.…”

Section: Introductionmentioning

confidence: 99%

Development and modification of permanent magnet brushed DC motor for hybrid photovoltaic-operated solar systems

Singh

Khan

Bhattacharya

et al. 2015

International Journal of Sustainable Engineering

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A modified brushed permanent magnet DC (PMDC) motor has been developed and fabricated for a photovoltaic (PV)-operated solar systems. The conventional PMDC motor has been plagued with constraints, the most critical being ingestion of vapours of working fluid inside the rotor and stator, damaging the insulation of windings and forming a thin film of moisture between commutator and brushes. This flaw results into a very low mean time between failures of the motor. In the past, many attempts have been made where-in variety of seals to isolate the working fluid vapours from inner parts of motor have been tried out, but to no avail. Even Brushless DC motors have been designed in the past but their exorbitant cost makes the entire arrangement not viable economically. The modification attempted in this article overcomes the problem of working fluid ingestion inside the motor. It is found that mass flow rate of working fluid obtained at maximum peak sunshine hours is 17.5 l/min at 3030 rpm of motor driven by a PV module of 40 W at 16.20 V. This low-cost modified PMDC motor has been robust with high mean time between failures as no breakdown observed during 18 months of operation.

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A new version of a solar water heating system coupled with a solar water pump

Cited by 31 publications

References 11 publications

Energy and exergy efficiency of a flat plate solar collector using pH treated Al2O3 nanofluid

Energy and exergy efficiency of a flat plate solar collector using pH treated Al2O3 nanofluid

Feasibility of Balcony Wall-Mounted Solar Water Heating System in High-Rise Residential Buildings

Development and modification of permanent magnet brushed DC motor for hybrid photovoltaic-operated solar systems

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