The direct contact between the collector and the saline water, result in corrosion and scaling in... more The direct contact between the collector and the saline water, result in corrosion and scaling in the still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with high value for different months at different hours. Due less incident effect maximum solar radiation can be received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence of beam radiation on the collector surface and thus maximize the incident beam radiation
A Technological Review of deep drawing process with concentration towards experimental and numeri... more A Technological Review of deep drawing process with concentration towards experimental and numerical analysis of sheet metal products of various ferrous and non-ferrous metals using hemispherical die-punch. Conclusions are drawn towards percentage thinning, wrinkles in flange region and tear in punch region of finished product and their dependence on Punching Force, Holding Force and plastic behaviour of the materials.
The solar air heater is newly developed air tight circular collector in which dull black powder c... more The solar air heater is newly developed air tight circular collector in which dull black powder coated aluminum tube of thickness 1.0 mm is used as absorber. The absorber tube is placed cocentrically in borosilicate glass tube, and at the both ends of these tubes neoprene rubber are place which will act as sealent to the air preasent between absorber and glass tubes and neoprene rubber also maintain gape between absorber and glass tube. These type of 04 assamblies are placed into the frame.A air inlet pipe conect four assamlies at bottom with air blower whoses speeds are regulat by ressistance regulator. Four assamlies are open in air outlet unit Efficiency evaluations were conducted during daylight hours over a 2-month period and included extensive monitoring and recording of temperatures with type- RTD (PT 100) placed at key locations throughout the system. The results confirmed the anticipated fluctuation in collector efficiency dependent on the time of day, solar energy irradiation, ambient temperature and circular tube surface mean temperature. An efficiency of approximately 78% was achieved.
The direct contact between the collector and the saline water, result in corrosion and scaling in... more The direct contact between the collector and the saline water, result in corrosion and scaling in the still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with high value for different months at different hours. Due less incident effect maximum solar radiation can be received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence of beam radiation on the collector surface and thus maximize the incident beam radiation
The direct contact between the collector and the saline water, result in corrosion and scaling in... more The direct contact between the collector and the saline water, result in corrosion and scaling in the still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with high value for different months at different hours. Due less incident effect maximum solar radiation can be received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence of beam radiation on the collector surface and thus maximize the incident beam radiation
A Technological Review of deep drawing process with concentration towards experimental and numeri... more A Technological Review of deep drawing process with concentration towards experimental and numerical analysis of sheet metal products of various ferrous and non-ferrous metals using hemispherical die-punch. Conclusions are drawn towards percentage thinning, wrinkles in flange region and tear in punch region of finished product and their dependence on Punching Force, Holding Force and plastic behaviour of the materials.
The solar air heater is newly developed air tight circular collector in which dull black powder c... more The solar air heater is newly developed air tight circular collector in which dull black powder coated aluminum tube of thickness 1.0 mm is used as absorber. The absorber tube is placed cocentrically in borosilicate glass tube, and at the both ends of these tubes neoprene rubber are place which will act as sealent to the air preasent between absorber and glass tubes and neoprene rubber also maintain gape between absorber and glass tube. These type of 04 assamblies are placed into the frame.A air inlet pipe conect four assamlies at bottom with air blower whoses speeds are regulat by ressistance regulator. Four assamlies are open in air outlet unit Efficiency evaluations were conducted during daylight hours over a 2-month period and included extensive monitoring and recording of temperatures with type- RTD (PT 100) placed at key locations throughout the system. The results confirmed the anticipated fluctuation in collector efficiency dependent on the time of day, solar energy irradiation, ambient temperature and circular tube surface mean temperature. An efficiency of approximately 78% was achieved.
The direct contact between the collector and the saline water, result in corrosion and scaling in... more The direct contact between the collector and the saline water, result in corrosion and scaling in the still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with high value for different months at different hours. Due less incident effect maximum solar radiation can be received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence of beam radiation on the collector surface and thus maximize the incident beam radiation
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still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal
efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without
insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which
eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric
pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature
using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat
exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the
equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and
Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity
in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with
high value for different months at different hours. Due less incident effect maximum solar radiation can be
received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence
of beam radiation on the collector surface and thus maximize the incident beam radiation
still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal
efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without
insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which
eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric
pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature
using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat
exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the
equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and
Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity
in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with
high value for different months at different hours. Due less incident effect maximum solar radiation can be
received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence
of beam radiation on the collector surface and thus maximize the incident beam radiation