On Design of a Buoyancy-Driven Solar Combi-System for Simultaneous Production of Drinking Water and Hot Water

2011 ◽  
Author(s):  
Varghese Panthalookaran ◽  
Neeraj Nair
Keyword(s):  
Drinking Water ◽  
Solar Energy ◽  
Water Requirement ◽  
Hot Water ◽  
Ideal Condition ◽  
Evaporation Chamber ◽  
Dry Air ◽  
Hot Air ◽  
Solar Distillation ◽  
Water Pipeline

The nexus between availability of solar energy and nonavailability of drinking water is well known. Drinking water scarcity is prevalent in regions where sun shines heavily, which provides an ideal condition for exploiting available solar insolation to produce potable water. When combined with the production of hot water, it could lead to the optimum use of solar energy. The same system can be preferentially used to produce drinking water during hot and dry summer and hot water in cold and wet winter. The current paper describes a work in progress to design a solar combi-system that meets the drinking water and hot water needs of small households in coastal India. The solar distillation operates based on an open humidification-dehumidification cycle. Efficient solar combi-collectors are used to produce hot and dry air and hot water simultaneously. The hot air blasts into the evaporation chamber, which consists of structures to optimize evaporation of the hot water. This allows enhanced humidification of dry air. The condensation chamber efficiently dehumidifies or condenses the saturated air to yield distilled water. The water thus produced is made potable with proper mineralization. A hot water heat store preserves hot water to be fed into the evaporator as well as to the hot water pipeline. The combi-system planned for a small household with approximately 10 liters of drinking water requirement per day and proportionate hot water requirement. The complete system is designed to be driven entirely by the buoyancy forces, without any moving parts.

scholarly journals THE PERFORMANCE OF A SINGLE SLOP SOLAR DISTILLER WHEN USING A TWO REFLECTOR

2021 ◽  
Vol 03 (03) ◽  
pp. 10-17
Author(s):  
Yaseen. H. MAHMOOD ◽  
Abeer Ibrahim ASHAWI
Keyword(s):  
Drinking Water ◽  
Solar Energy ◽  
River Water ◽  
Salt Water ◽  
Low Cost ◽  
Safe Drinking Water ◽  
Solar Distillation ◽  
The Impact

The lack of safe drinking water is a major problem in many areas. Most of which located within the range of high solar sun and the enormous potential of solar energy can be exploited to turn salt water into drinking water. The most economical and easy way to achieve this goal is to use solar distillation. Two low-cost "Single Slope" solar distillers were designed to examine the impact of adding concentrates and reflectors on daily yield and efficiency and then compare the results. Results obtained from practical experiments have shown that solar distillers with internal and external reflectors made of mirrors have increased in efficiency by 6% and 12% when one liter and two liters of river water are added, respectively, from the distiller under the effect of the parabola concentrator. The daily yield was also (60 and 240) ml higher for the solar distiller, which contained both internal and external reflectors.

scholarly journals Theoretical research to accomplish a system of ecological heating a greenhouse for vegetables

2020 ◽  
Vol 180 ◽  
pp. 03022
Author(s):  
Eugen Marin ◽  
Marinela Mateescu ◽  
Dragos Manea ◽  
Andrei Dumitrascu ◽  
Carmen Vasilachi ◽  
...  
Keyword(s):  
Solar Energy ◽  
Heat Pipe ◽  
Heating System ◽  
Early Spring ◽  
Hot Water ◽  
Energy Resources ◽  
Theoretical Research ◽  
Solar Panels ◽  
Hot Air ◽  
Triple Layer

Considerating that the energy resources can be found in limited quantities and are not renewable, the most efficient and technically sustainable for heating the soil in early spring or late autumn in a greenhouse for vegetables is to use the solar energy. A heated greenhouse for vegetables is useful because the vegetation process can start more early or can continue later for can obtain several crops throughout the year. The paper presents theoretical researches accomplished for development an system of ecological heating in a greenhouse covered with a tough polyethylene wrap with triple layer. The heating system contains solar panels with heat-pipe vacuum tubes and an installation for heating the interior of the solarium using hot water hot air heaters, which adds more heat.

Drinking water pipeline: New PVC formulation anti-biofilm for the Moroccan industry

2017 ◽  
Vol 8 (12) ◽  
pp. 4444-4450
Author(s):  
H. El Omari ◽  
N. Boutaleb ◽  
B. Bahlaouan ◽  
S. Oualich ◽  
A. Jrifi ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Pipeline

Sustainable Cooling with Hybrid Concentrated Photovoltaic Thermal (CPVT) System and Hydrogen Energy Storage

2018 ◽  
Vol 1 (2) ◽  
pp. 40-51 ◽  
Author(s):  
Muhammad Burhan ◽  
Muhammad Wakil Shahzad ◽  
Kim Choon Ng
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Optimization Algorithm ◽  
Concentration Ratio ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Hot Water ◽  
Hydrogen Energy ◽  
Adsorption Chiller ◽  
Back Plate

Standalone power systems have vital importance as energy source for remote area. On the other hand, a significant portion of such power production is used for cooling purposes. In this scenario, renewable energy sources provide sustainable solution, especially solar energy due to its global availability. Concentrated photovoltaic (CPV) system provides highest efficiency photovoltaic technology, which can operate at x1000 concentration ratio. However, such high concentration ratio requires heat dissipation from the cell area to maintain optimum temperature. This paper discusses the size optimization algorithm of sustainable cooling system using CPVT. Based upon the CPV which is operating at x1000 concentration with back plate liquid cooling, the CPVT system size is optimized to drive a hybrid mechanical vapor compression (MVC) chiller and adsorption chiller, by utilizing both electricity and heat obtained from the solar system. The electrolysis based hydrogen is used as primary energy storage system along with the hot water storage tanks. The micro genetic algorithm (micro-GA) based optimization algorithm is developed to find the optimum size of each component of CPVT-Cooling system with uninterrupted power supply and minimum cost, according to the developed operational strategy. The hybrid system is operated with solar energy system efficiency of 71%.

DETERMINING THE PROFITABILITY OF GREENHOUSE ELECTROTECHNOLOGIES: A MODELING APPROACH

HortScience ◽  
1994 ◽  
Vol 29 (4) ◽  
pp. 249a-249
Author(s):  
Eric A. Lavoie ◽  
Damien de Halleux ◽  
André Gosselin ◽  
Jean-Claude Dufour
Keyword(s):  
Energy Consumption ◽  
Heat Pump ◽  
Water System ◽  
Heat Pumps ◽  
Hot Water ◽  
Pump System ◽  
Heat Pump System ◽  
Artificial Lighting ◽  
Hot Air ◽  
Marketable Fruit

The main objective of this research was to produce a simulated model that permitted the evaluation of operating costs of commercial greenhouse tomato growers with respect to heating methods (hot air, hot water, radiant and heat pumps) and the use of artificial lighting for 1991 and 1992. This research showed that the main factors that negatively influence profitability were energy consumption during cold periods and the price of tomatoes during the summer season. The conventional hot water system consumed less energy than the heat pump system and produced marketable fruit yields similar to those from the heat pump system. The hot water system was generally more profitable in regards to energy consumption and productivity. Moreover, investment costs were less; therefore, this system gives best overall financial savings. As for radiant and hot air systems, their overall financial status falls between that of the hot water system and the heat pump. The radiant system proved to be more energy efficient that the hot air system, but the latter produced a higher marketable fruit yield over the 2-year study.

Problem about Solar Water Heating System and Residential Building Integrated

2012 ◽  
Vol 193-194 ◽  
pp. 30-33
Author(s):  
Xue Ying Wang ◽  
Dong Xu ◽  
Ya Jun Wu
Keyword(s):  
Solar Energy ◽  
Integrated Design ◽  
Water System ◽  
Residential Building ◽  
Heating System ◽  
Hot Water ◽  
Solar Water Heating ◽  
Drainage Design ◽  
Hot Water Supply ◽  
Solar Water Heating System

This article analyzes the problem in application the solar system was used in residential building, puts forward the requirements to use energy and choose the setting of the solar energy collector from two aspects of building and drainage design respectively. In addition, the article explicates andthe solar energy collector and building integrated design and the development of solar energy collector. At last, the article puts forward some Suggestions on the improvement and development of residential solar hot water system and the design of the hot water supply bath solution of practice to make solar energy and low power assisted by night combining.

Matrix metalloproteinase-2 inhibition activity of Plukenetia volubilis L. leaves extract for anti-aging application

Food Research ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 120-126
Author(s):  
N. Wuttisin ◽  
T. Nararatwanchai ◽  
A. Sarikaphuti
Keyword(s):  
High Performance ◽  
Antioxidant Property ◽  
In Vitro Cytotoxicity ◽  
Hot Water ◽  
Matrix Metalloproteinase 2 ◽  
Human Skin Fibroblast ◽  
Inhibition Activity ◽  
Hot Air ◽  
Plukenetia Volubilis

Plukenetia volubilis L. leaves were part of the traditional diets in many countries. P. volubilis leaves were used to make tea and sold as local products in Thailand. There is less information on the composition of P. volubilis leaves. Previous study revealed that roasted leaves extract with hot water showed the highest antioxidant activity and the antioxidant property might be due to the presence of flavonoid. The present study was carried out to determine the quercetin content in P. volubilis leaves extract and evaluate the anti-aging potential activities including MMP-2 inhibition activity and telomerase stimulation activity. P. volubilis leaves were roasted in hot air oven and extracted with hot water. The extract was investigated for quercetin content by high-performance liquid chromatography (HPLC). In vitro cytotoxicity, MMP-2 inhibition activity and telomerase stimulation activity were determined for anti-aging properties. The results revealed that P. volubilis leaves contained quercetin 50.50±4.78 mg/g DW. The extract showed no cytotoxicity on human skin fibroblast with cell viability of 96.76-120.83%. It demonstrated the potential of MMP-2 inhibition (8.74±2.84%) activity but lower than ascorbic acid. P. volubilis leave extract did not have telomerase stimulation activity on the human Hela cell line. However, the results from this study have indicated the possibility of anti-aging potential of P. volubilis leaves extract.

RENEWABLE ENERGY INTEGRATION FOR HOT WATER SUPPLY AND HEATING OF BUILDINGS

2021 ◽  
pp. 3-12
Author(s):  
Yu. Selikhov ◽  
K. Gorbunov ◽  
V. Stasov
Keyword(s):  
Solar Energy ◽  
Heat Production ◽  
Heat Supply ◽  
Alternative Energy ◽  
Fossil Fuel ◽  
Heat Pumps ◽  
Climatic Conditions ◽  
Economic Feasibility ◽  
Hot Water ◽  
The Cost

Solar energy is widely used in solar systems, where economy and ecology are combined. Namely, this represents an important moment in the era of depletion of energy resources. The use of solar energy is a promising economical item for all countries of the world, meeting their interests also in terms of energy independence, thanks to which it is confidently gaining a stable position in the global energy sector. The cost of heat obtained through the use of solar installations largely depends on the radiation and climatic conditions of the area where the solar installation is used. The climatic conditions of our country, especially the south, make it possible to use the energy of the Sun to cover a significant part of the need for heat. A decrease in the reserves of fossil fuel and its rise in price have led to the development of optimal technical solutions, efficiency and economic feasibility of using solar installations. And today this is no longer an idle curiosity, but a conscious desire of homeowners to save not only their financial budget, but also health, which is possible only with the use of alternative energy sources, such as: double-circuit solar installations, geothermal heat pumps (HP), wind power generators. The problem is especially acute in the heat supply of housing and communal services (HCS), where the cost of fuel for heat production is several times higher than the cost of electricity. The main disadvantages of centralized heat supply sources are low energy, economic and environmental efficiency. And high transport tariffs for the delivery of energy carriers and frequent accidents on heating mains exacerbate the negative factors inherent in traditional district heating. One of the most effective energy-saving methods that make it possible to save fossil fuel, reduce environmental pollution, and meet the needs of consumers in process heat is the use of heat pump technologies for heat production.

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