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181 articles for “Refrigerant.”
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Design and Investigation of Peltier Technology for Automobile Air-Conditioning Unit
Abstract: AbstractIn recent years, market of heating, ventilation and air-conditioning system (HVAC) has escalated a lot. These units provide cooling and conditioned atmosphere to automobiles, buildings, cold storage etc. HVAC units are very reliable and effective but they produce some adverse impact on environment. This paper proposes the use of solar energy with thermoelectric (Peltier) technology. In order to determine the efficiency of solar energy assisted thermoelectric module, it is necessary …
Published in Journal of Microelectronics and Solid State Devices · Vol. 6, Issue 3, 2019 · pp. 37–42 Read article
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Design of Ducts: An Industrial Perspective
Abstract: Central Air Conditioners working is a complex and cumbersome topic which takes a lot of time and effort. It’s a difficult task to explain the entire parts, its working and maintenance. Here an effort is made to explain about the designing of Ducts used in a central A/C. A Commercial building is taken for reference and each floor’s Duct designing is explained. The ground floor is designed with supply air …
Published in Journal of Production Research & Management · Vol. 10, Issue 1, 2020 · pp. 18–24 Read article
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Design of a HVAC System for an Entire Hotel
Abstract: HVAC&R systems stands for (heating, ventilation, air conditioning and refrigeration). These systems are particularly used in thermal industries and other commercial offices. The main aim of the project is to design an energy efficient and cost efficient HVAC system for a given layout of a hotel. This project particularly deals with the heat load calculation, selection of materials, selection of systems taking into consideration of various factors like :- Structure …
Published in Journal of Production Research & Management · Vol. 10, Issue 2, 2020 · pp. 17–19 Read article
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Enhance the Thermal Performance and Fluid Flow Behavior in Micro-Tube Heat Exchangers with Variable Fluid Properties for Cooling Applications
Abstract: This paper focus on the substantial effects of fluid property changes and phase change events, this study provides a comprehensive transient assessment of the heat exchanger's thermal performance and fluid flow behaviour for cooling and dehumidification applications. In response to a step-change perturbation, a dynamic model was created and co-simulated to describe the moist air (shell-side) and the two-phase refrigerant (tube-side), as well as their non-linear interactions. The significant correlation …
Published in Journal of Thermal Engineering and Applications · Vol. 13, Issue 2, 2026 Read article
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Thermal Engineering: Principles, Evolution, and Comparative Analysis with Classical Approaches
Abstract: Thermal engineering is the study of heat transfer, thermodynamics and energy conversion systems. However, through the years it has progressed from classical theories, which relied on empirical correlations, to enhanced computed and nanotechnology based approaches. This paper highlights the principles of thermal engineering, its important systems and latest developments of thermal engineering and provides extensive comparisons between the classical (traditional) methods and the most recent developments or innovations such as …
Published in International Journal of Mechanical Dynamics and Systems Analysis · Vol. 4, Issue 2, 2026 Read article
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Studying the Effects of Reheat on R134A Cycle Performance using Industrial Air-Conditioning Training Equipment
Abstract: This paper presents an apparatus-based experiment for teaching air conditioning and refrigeration in undergraduate engineering hands-on based learning curricula. Results for an R134A based refrigeration and air conditioning performance are shown in this paper illustrating the effects of re-heat on the COP of the cycle as well as the use on a LabView interface to extract test data. The primary use of this equipment is to show various “what-if” scenarios. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 1, Issue 2, 2014 · pp. 1–6 Read article
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Energy Efficiency in Mobile Air-Conditioning—A Survey
Abstract: Abstract In the past decades, it has been observed a significant increase in the global production of vehicles. This situation is more visible in developing countries, like India, Many of these automobiles are equipped with mobile air-conditioning (MAC) systems in order to improve the comfort and security of the occupants. In contrast to these positive characteristics, the MAC systems are also responsible for greenhouse gas emissions and an increase of …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 2, 2017 · pp. 1–12 Read article
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Design Fabrication and Experimental Analysis of Air Conditioner by Peltier’s Module
Abstract: The modern air conditioner cools by using refrigeration gases like Freon, CFCs, etc. Although these refrigerants produce good results, one of their main drawbacks is the release of hazardous chemicals that affect the ozone molecules. Attempting to make utilisation of air conditioners that cool using thermoelectric cooling modules, which operate by the Peltier effect, becomes an option to solve this problem. These modules safeguard the ecosystem by not emitting any …
Published in Journal of Aerospace Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 9–15 Read article
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Effect of Blanching on the Quality of Frozen Product of Carrot
Abstract: Carrot is one of the important root vegetables rich in bioactive compounds. The consumption of carrot and its products is increasing steadily due to its recognition as an important source of natural antioxidants having anticancer activity. Blanching is scalding the vegetables in water or in steam for a short time. The influences of blanching on the frozen product of carrots were investigated to determine the quality and shelf life of …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 4, Issue 3, 2015 · pp. 1–9 Read article
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Zero Energy Cool Chamber (ZECC): A Unique Low-cost Food Preservation System
Abstract: Zero energy cool chamber (ZECC) is an environment friendly or eco-friendly and low-cost post-harvest technology which can be made up with locally available low-cost materials like brick, sand etc. For this reason, it can easily be constructed in rural and remote areas. It is mainly used to store fruits and vegetables. It does not need any electricity, that is why it also saves energy. Temperature and humidity are two important …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 11, Issue 4, 2022 · pp. 16–22 Read article
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Development of Anti IgG Polyclonal Antibody Against Canine IgG and Their Roles in Diagnostic Purposes
Abstract: IgG plays an important part in immunological studies and also in living bodies for providing secondary immune response which triggers as passive immunization against harmful pathogens in dogs. Purpose: The aim of this investigation is to separate, identify, and refine immunoglobulin G from canine serum. Methods: Ammonium sulphate precipitation was used to separate the dog's serum, which was then concentrated over night in a dialysis bag inside of a refrigerator. …
Published in International Journal of Vaccines · Vol. 1, Issue 2, 2024 · pp. 01–06 Read article
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Evaluating the Performance of a Smart VCR System Using Python for Data Analysis Based on IoT
Abstract: Commercial buildings use a significant amount of electricity, with around 60% to 80% being attributed to the HVAC system. Implementing IoT and smart sensors can help reduce this consumption by 10% to 30%. To lower the electricity usage of air conditioners, a study has proposed an IoT-based smart VCR system with sensors, meters, gateway, and cloud computing modules. This system is designed to collect data and regulate the VCR system …
Published in Journal of Control & Instrumentation · Vol. 15, Issue 2, 2024 · pp. 7–23 Read article
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Association of Vitamin D Binding Protein BP rs2282679 Gene Polymorphism and Serum Levels of Vitamin D in Patients with Vitiligo
Abstract: For vitamin D to have an impact, the vitamin D receptor (VDR) must be expressed and activated in the nucleus. The VDR has several known genetic variants. Biological impacts can be caused by changes in DNA sequences known as "polymorphisms" that are common in the population. Vitiligo is a disease that causes loss of skin color in patches, and it is a chronic (long-lasting) autoimmune disorder loss of color. The …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 14, Issue 2, 2024 · pp. 45–52 Read article
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Optimizing Heat Transfer Performance in CO2 Finned-Tube Gas Coolers: A Comparative CFD Study of Design Variations
Abstract: Computational fluid dynamics (CFD) simulations and mathematical analysis are used in this study to examine the heat transfer efficiency of CO2 fined tube gas coolers. To maximize heat transfer efficiency, CFD simulations were carried out on a variety of gas cooler designs with variable fin geometry, including offset strip fins, using the ANSYS Fluent program. Under the baseline design, there was a finned tube cooler measuring 610 mm in length, …
Published in Recent Trends in Fluid Mechanics · Vol. 11, Issue 3, 2024 · pp. 1–13 Read article
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Integrating Electromechanical Cooling with Thermoelectric System for Enhanced Cooling Efficiency
Abstract: To improve cooling efficiency, a wide range of cooling systems have been studied. This article investigates the combination of thermoelectric and electromechanical air conditioners to maximize cooling performance. Electromechanical cooling methods, such as vapor compression refrigeration, have traditionally dominated cooling applications due to their high efficiency and reliability. However, these systems face challenges related to environmental impact and scalability. Thermoelectric cooling, by contrast, offers advantages like compact size, silent operation, …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 11, Issue 2, 2024 · pp. 17–23 Read article
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Conservation of Agricultural Products in Sub-Saharan Zone by Ecological Off-grid Cold Room, Case of Senegal
Abstract: In this article, we have studied and dimensioned a solar cold room for the preservation of potatoes in sub-Saharan areas. The conservation of post-harvest agricultural products is a major issue in this part of Africa, hence the need to focus our research on off-grid refrigeration installations. In this work, we focused on the use of local materials such as agricultural residues and terracotta for the construction of solar cold rooms. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 11, Issue 2, 2024 · pp. 24–35 Read article
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Urban Smart Living: Home IoT Technology
Abstract: The practice of self-sufficiently regulating home appliances using various control system approaches is known as IoT smart city home automation. Many control strategies may be utilized to control the electrical and electronic appliances in the house, including the windows, refrigeration units, fans, lights, fire alarms, kitchen timers, and so on. Sync thousands of products to automate everyday tasks and create a home hub. With live cams, you can see how …
Published in Journal of Mechatronics and Automation · Vol. 11, Issue 3, 2024 · pp. 26–32 Read article
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Understanding Food Spoilage: Mechanisms, Shelf-Life Determination, and Safety Standards
Abstract: Food spoilage poses significant challenges to the global food industry, impacting both food safety and economic sustainability. The main causes of food quality deterioration are microbial and non-microbial spoiling. Microbial spoilage primarily results from the activity of bacteria, yeasts, and molds, which thrive under favorable environmental conditions. These microorganisms can lead to food poisoning and spoilage through the production of off-flavors, discoloration, slime formation, and the accumulation of harmful toxins. …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 14, Issue 1, 2025 · pp. 6–9 Read article
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A Review study of Mn-Zn Ferrite with Applications and Synthesis processes
Abstract: The distinct magnetic characteristics and adaptability of Mn-Zn ferrites make them broadly applicable in a wide range of industries and applications. Temperature stability, high electricity resistivity, magnetic permeability, permittivity, saturation magnetization, and low power losses are among the characteristics of Mn-Zn ferrites. These ferrites particularly in the form of magnetic nanoparticles, have garnered significant interest in cancer research and therapy and the biomedical field. Researchers are keenly interested in the …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 2, 2024 · pp. 15–26 Read article
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Self-Starting Diesel Generator
Abstract: Power outages can happen to anyone, and they are a lot more frequent than the major outages that make the evening news on TV. Being prepared for a blackout goes beyond beans, batteries and bullets. Having a source of alternative energy to power your devices, both small and medium, can make all the difference. Larger devices can be powered, but you would need some serious generators to make sure you …
Published in International Journal of Electrical Power and Machine Systems · Vol. 3, Issue 1, 2025 · pp. 17–21 Read article