Comparative Performance of Cylindrical Solar Water Heating System With and Without a Reflective Surface

2010 ◽  
Author(s):  
N. V. Ogueke ◽  
E. E. Anyanwu
Keyword(s):  
Solar Energy ◽  
Heating System ◽  
Water Heating ◽  
Water Heater ◽  
Comparative Performance ◽  
Surface Conditions ◽  
Solar Water Heating ◽  
Solar Water ◽  
Reflective Surface ◽  
Solar Water Heating System

The comparative performance of a cylindrical solar water heating system with and without reflective surface is presented. The major components of the water heater are a transparent cylindrical PVC material acting as the glazing and a copper tube painted black for improved solar energy absorption. One of the systems has it’s under segment, about 45°, lined with an aluminium foil to act as a reflective surface. The two systems were tested under the meteorological condition of the Federal University of Technology, Owerri, Nigeria. Results obtained reveal a maximum exit water temperature from the solar water heater of 68 and 50°C for the reflective and non reflective surface conditions, respectively. The maximum efficiencies were determined as 70% and 40%, respectively for the reflective and non reflective surface conditions while the Hottel-Whillier-Bliss characterization showed that addition of the reflective surface improved the solar water heater’s ability to absorb energy by about 100% and reduced the rate at which it loses by up to 25%. Thus the system with a reflective surface has better capability of converting solar energy to heat for hot water generation.

Uniquely Designed Solar Tube in a Natural/Forced Mini-Water Heating System

2018 ◽  
Author(s):  
Amanie N. Abdelmessih ◽  
Siddiq S. Mohammed
Keyword(s):  
Solar Energy ◽  
Forced Convection ◽  
Solar Power ◽  
Heating System ◽  
Operating Conditions ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Water Heaters ◽  
Solar Water Heating System

Solar power is a clean source of energy, i.e. it does not generate carbon dioxide or other air pollutants. In 2017, solar power produced only 0.6 percent of the energy used in the United States, according to the Energy Information Administration. Consequently, more solar energy should be implemented, such as in solar water heaters. This research took place in Riverside, Southern California where there is an abundance of solar energy. In house uniquely designed and assembled solar tubes were used in designing a mini solar water heating system. The mini solar water heating system was set to operate under either natural or forced convection. The results of running the system under forced convection then under natural convection conditions are reported and discussed in the article. In addition, comparison of using two different solar water storage systems are reported: the first was water; the second storage medium was a combination of water and gravel. Since water heaters are extensively used for residential purposes, this research mimicked the inefficiencies in residential use and is compared with ideal operating conditions. The performance of the different cases studied is evaluated.

scholarly journals Performance Studies and Energy-Saving Analysis of a Solar Water-Heating System

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1536
Author(s):  
Xilian Han ◽  
Chao Li ◽  
Hongqiang Ma
Keyword(s):  
Solar Energy ◽  
Energy Saving ◽  
Large Scale ◽  
Collection Efficiency ◽  
Heating System ◽  
Hot Water ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Solar Water Heating System

This paper proposed an experimental test: the solar water-heating system was been monitored for a whole year to analyze collector performance in an actual operation process. Heat-collecting efficiency, heating capacity, power consumption, and heat required were analyzed theoretically. Results showed that solar irradiance and ambient temperature were positively correlated with heat collection efficiency, and the daily average heat collection efficiency was up to 56.63%. In winter, the auxiliary heat source consumed the most power, almost all of which bears the heat of users. The heat collection in summer met the demand for hot water, and the guarantee rate of solar energy could reach 100%. The energy saving properties and CO2 emission reduction were analyzed. This system had a significant effect on the energy-saving effect and environmental protection. The analysis showed that the hot-water system can fully meet the design requirements under the condition of relatively sufficient solar energy, and can operate stably, which has a certain guiding significance for the design and application of large-scale solar hot-water systems.

Applied Research of Solar Water Heater Integrated with Modern Architecture

2013 ◽  
Vol 756-759 ◽  
pp. 4492-4496
Author(s):  
Bo Yang Zhang ◽  
Ya Hui Xie ◽  
Shun Xiang Sun
Keyword(s):  
Water Storage ◽  
Heating System ◽  
Modern Architecture ◽  
Solar Water Heater ◽  
Storage Tanks ◽  
Water Heating ◽  
Water Heater ◽  
Solar Water Heating ◽  
Solar Water ◽  
Solar Water Heating System

This paper describes the application forms of building integrated with solar energy. We explain a solar water heating system; its solar collectors and water storage tanks are placed together. We discuss another solar water heating system, its solar collectors are placed together but its water storage tanks are placed in every resident's home. This paper also introduces the wall-hung SWH and the application of solar refrigeration and solar heating. At last we analyze the problems of the development of solar water heater integrated with modern architecture.

Energy Savings and CO2 Reduction through Solar Water Heater Technology in Sindh Pakistan

2013 ◽  
Vol 315 ◽  
pp. 330-333
Author(s):  
Mujeeb Iqbal Soomro ◽  
Rizwan Ahmed Memon ◽  
Khanji Harijan
Keyword(s):  
Solar Energy ◽  
Energy Savings ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Energy Sources ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Fuel Savings ◽  
Solar Water Heating System

Pakistan suffers worst energy crises due to unavailability of primary energy sources. One of the solutions to energy problems of Pakistan lies in utilization of renewable energy sources like solar energy. One of the possible uses of solar energy is in the form of water eating. This work explored the availability of solar energy in the Sindh province of Pakistan. Moreover potential fuel savings and reduction in CO2 emission due to the use of solar water heating system is also evaluated. The RETScreen software was used for evaluation of fuel savings and CO2 emission reduction from a solar water heating system. Results show that the annual natural gas supplied to an average household in the three main cities of Sindh i.e., Karachi, Hyderabad and Sukkur could be reduced by 513.5, 409 and 543.5 m3, respectively. Annual reductions in emissions of CO2 for Karachi, Hyderabad and Sukkur were estimated to be 1, 0.8 and 1 tCO2 respectively. It is concluded that the utilization of solar energy for water heating in domestic sector of Sindh Pakistan could save fuel fossil and reduce environmental pollutants that in-turn may help mitigate energy crises in the country.

Hybrid Solar Lighting May Have Another Utility: Solar Water Heating

Solar Energy ◽  
2006 ◽  
Author(s):  
Peter E. Zemke ◽  
Byard D. Wood
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Optical Fibers ◽  
Heating System ◽  
Hot Water ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Solar Lighting ◽  
Solar Water Heating System

Hybrid solar lighting (HSL) has been successfully demonstrated as a means of collecting sunlight and transferring it through optical fibers into a building. The collected solar energy is primarily intended for illumination purposes. However, this technology may have an application in solar water heating. For a traditional solar water heating system, energy is required to pump the water to the roof and collected solar energy is lost to the environment through the collector and plumbing. If such a system is to be used in climates where the temperature falls below freezing, complexity is added resulting in lower system efficiencies. If, rather than pumping water to the roof to absorb solar energy, the solar radiation is “piped” into the hot water store, a solar water heating system may be much less complex and potentially more efficient. HSL technology can be used to collect solar radiation and transport it through optical fibers into a hot water store. Since the water remains in the tank, it is not exposed to freezing temperatures and heat loss through plumbing. The efficiency of the system would not be dependent on the outside temperature or the temperature of the water as traditional systems are, but solely on the efficiency in which solar radiation is transferred into the water. This paper will outline the major advantages of using HSL technology for solar water heating over traditional systems. The approximate efficiencies of a flat-plate collector, 2-axis solar tracking collector, and a system using HSL technology are compared using F-Chart for locations in the Southwestern and Northeastern United States. It is shown that improvements in efficiency are obtained using HSL technology if the system is capable of collecting and transferring the visible and infrared spectrum of solar radiation.

Effective Parameters of Solar Water Heating System on Ceramic Drying

2014 ◽  
Vol 555 ◽  
pp. 440-445 ◽  
Author(s):  
Mustafa Kemalettin Büyükakın ◽  
Semiha Öztuna
Keyword(s):  
Solar Energy ◽  
Industrial Process ◽  
Heating System ◽  
Effective Parameters ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
New Methods ◽  
Conventional Drying ◽  
Solar Water Heating System

Drying is an energy intensive process. Through out all industrial processes, 15% of total energy is used for drying processes. Moreover, 60% of used energy is wasted for only drying for any industrial process including drying process because of using conventional drying systems. Since a few decades, energy decrease in the world has been forcing the industry to find new methods to reduce the energy consumption. One of these methods is the use of solar energy. Solar energy can be used very effectively for drying processes in case the system is designed and analysed properly. In this study, effective parameters of a solar water heating system on a predesigned drying kiln is investigated and the proper combinations of parameters of the system are determined according to drying temperature obtained.

Solar Water Heating System and Building Integration of High-Rise Building in Seismic Zone

2012 ◽  
Vol 512-515 ◽  
pp. 163-167
Author(s):  
Chun Qing Wang ◽  
Chun Jing Lai ◽  
Yan Peng Zhu
Keyword(s):  
Solar Energy ◽  
Heating System ◽  
Energy System ◽  
Seismic Zone ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
High Rise ◽  
High Rise Building ◽  
Solar Water Heating System

Solar water heater has been heavily used in building, but in high-rise building the application of solar water heating system has many difficulties. In seismic zone, solar energy system has strict design requirements as non-structural elements of the building. These restrictions seriously hinder the application of solar energy system in high-rise buildings. Considering the limitations of the use of solar energy in seismic-zone high-rise building, some measures are taken by architectural building integration, structural measures integration, piping layout integration and by optimizing parameters of the solar water heating system. These measures could solve some technical difficulties of solar water heating system in high-rise building in seismic zone.

Analysis about Solar Water Heating System and Residential Building Integrated Design

2012 ◽  
Vol 193-194 ◽  
pp. 13-16
Author(s):  
Xue Ying Wang ◽  
Dong Xu ◽  
Ya Jun Wu
Keyword(s):  
Solar Energy ◽  
Residential Building ◽  
Heating System ◽  
Green Energy ◽  
Hot Water ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Quality Life ◽  
Solar Water Heating System

The solar energy is a free from contamination of green energy, the application of solar energy in building is booming in recent years. Solar water heating system in the building and the organic combination are also getting forward. In order to meet the people of high quality life pursuit, more and more housing are designed with solar water heating system. The paper expounds the necessity and importance about solar water heating system integration and illustrates that residential building solar hot water system of building integrated principle, emphasize we should use the life cycle of the technology economic evaluation methods to speed up the establishment residential building solar water heating system and building integrated evaluation system.

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