Journal of Advanced Research in Glass, Leather and Plastic Technology

Optimization of Injection Moulding Process With Melting Temperature Parameters Using Hybridization Approach

2024-08-21T09:35:36+00:00

Due to the production of plastic products with complex shapes, the plastic injection moulding manufacturing method has recently received a lot of attention. In order to improve manufacturing performance, the cycle time for the injection moulding process has been reduced, the defect known as dimensional warpage that results from temperature differences inside the mould has been reduced, and the mechanical tensile strength of the material has been increased so that it cannot warp easily. Warpage is a dimensional flaw of the product; hence a longer cycle time is needed. We risk a decline in production if we do this. Additionally, a superior product should have a higher tensile strength. A suitable experimental design is prepared using the Taguchi Orthogonal array to determine the trade-off analysis between quality and productivity. The Taguchi orthogonal array is used to select an appropriate experimental design, and utilising the experimental data, the entropy measurement method is then used to look into the choice of response behaviour. The utility idea is then used to determine how the processing parameters connect to the various processes.

Investigation of Impinging Jet Solar Air Heater for High Thermohydraulic Performance

2024-08-21T09:35:37+00:00

The prime objective of this research work is to minimize the consumption of conventional energy sources. Solar air heater is device, which has the great potential to harness the solar energy for low temperature applications such as space heating, drying agriculture product and industrial applications. An experimentation performed on impinging jet solar air heater for thermal investigation. Solar air heater contains a glass cover, flat jet plate and a corrugated absorber plate. In this experimental investigation, air enters in first channel (between glass cover and transparent jet plate) and through jet holes, air enters in second channel (between transparent jet plate). Because of jet impingement, thinning of the boundary layer takes place, which increases the heat transfer from hot absorber plate. Heat losses are minimized by using insulation and jet impingement from upper side of the absorber plate. The maximum outlet air temperature about 38 oC obtained at mass flow rate of 0.01kg/s.

Performance Evaluation of Earth Air Tube Heat Exchanger during Winter Season for Ludhiana Climate

2024-08-21T09:35:37+00:00

Due to the enormous use of energy worldwide, there is a remarkable gap in demand and supply of energy has triggered the researchers to use geothermal, a sustainable and renewable form of energy in the form of an Earth Air Tube Heat Exchanger (EATHE). An EATHE can effectively work for HVAC of buildings or greenhouses. AnEATHE system was installed, in order to evaluate the performance during the winter season. The EATHE was designed with a 152 mm diameter PVC pipe of 5.8 meters length, buried at a depth of 2.76 meters. Fresh air was circulated with an air blower, following an open-loop system. The EATHE was run four times a day i.e., morning, noon, evening and night, at velocities of 2.70 m/s, 4.76 m/s, 6.25 m/s and 7.69 m/s for 30 minutes duration each under the open system. The variation in air flow rate was achieved with help of a dimmer to get the steady-state condition and optimum results. The temperature gain and coefficient of performance (COP) were evaluated at these velocities. Hence the validatedEATHE system can be used for HVAC of buildings at its optimum air flow rates for Morning, Afternoon, Evening and Night time.It was observedthat 2.70 m/s is optimum air velocity to get higher temperature difference and COP during morning and noon sessions. The optimum value of air velocity for the evening session is 6.25 m/s because it gives a higher temperature difference of 7Â°C than any other air velocities. The COP for the evening session is slightly higher achieved than the airflow rate of 6.25 m/s, at a flow rate of 4.76 m/s. During the nighttime, the total temperature change is 7Â°C with three different airflow rates i.e., 2.70 m/s, 6.25 m/s, 7.69 m/s. The optimum value of COP is 13.5, which is achieved at 2.70 m/s air velocity, so 2.70 m/s can be considered as the optimum airflow rate for the night session.

Strength and Rheological Properties of High Strength Concrete Incorporating Rice Husk Ash and Metakaolin

2024-08-21T09:35:37+00:00

Concrete has one of the largest ecological footprints as cement production generates 7% of the global CO2 emissions. This led the concrete technologists towards the use of supplementary cementing materials. As the advent of modern structures have raised the strength and service life requirements for concrete, it has become a great concern to find suitably engineered supplementary cementing materials that enhance both and are economical. Thereby, this study presents an experimental investigation on blended cement mixtures constituting two series of 6 mixtures each. The first series prepared with partial replacements of 5% & 10% fine aggregate by RHA in combination with 5, 10 and 15% Metakaolin as a replacement for cement and a persistent water/binder ratio of 0.3 and its effect on strength and rheology of High Strength concrete (M90) up to 28 days after casting was studied. Whereas, the second series used both RHA & Metakaolin as combined replacement for cement content with same replacement percentages by weight. The results exhibited increased compressive strength for up to 15% Metakaolin + 10% RHA. Maximum 28-day strength was 113.6 N/mm2 with an increment of 15.40% over control mix. The optimum cement blend revealed by the study is 10%RHA+15%Metakaolin in order to produce concrete of high strength and durability.

Affordable Housing Sustainability into Consideration

2024-09-05T05:35:10+00:00

Shelter for everyone is a rising necessity in every populated country. As a result, a definition of affordable housing for developing nations emerges. In India, the issue is far more intense, with a projected shortfall of about 17.5 million houses, with 99% living in low-income parts of the country. The output of affordable housing poses a major challenge to policy makers. India is said to be experiencing the worldâ€™s largest scale urbanisation. Despite policymakerâ€™s best attempts to ensure the economic prosperity of affordable housing projects, the sustainability of affordable housing has received scant attention. This article examines the different concepts of affordable housing in relation to sustainability. A literature review was conducted with the aim of recommending a cost-effective construction technique for building an affordable house with emphasis on sustainability. As a result, the aim of this paper is to:
(1) assess the importance of various sustainability factors; and
(2) create an understanding to promote the incorporation of sustainability into affordable housing programmes.