Adnan Qamar

University of Engineering and Technology, Lahore | UET · Department of Mechanical Engineering

Hybrid nanofluids (HNFs) of metallic oxide-based nanoparticles (NPs) have been prepared in different basefluids (BFs) employing the thermal plasma technique. NPs of ZnO–MgO were directly dispersed into pristine coolant, engine oil, distilled water (DW), and coconut oil. Plasma was generated between two identical electrodes applying 8.0 kV at the am...

The present experimental study investigates the thermal and hydraulic performance of Ethylene Glycol (EG)-based ZnO nanofluids (NFs) in circular minichannel test sections, each of 330 mm in length and 1.0–2.0 mm inner diameters. The experiments were conducted under steady-state constant heat flux and laminar flow conditions. The stable ZnO/EG-based...

Experimental setup has been designed and tested for local heat transfer performance of mPCM slurry flow inside the microchannels under convective boundary condition following unique inverse method. The heat transfer data were collected at ninety-eight precise locations along the flow direction of mPCM slurry inside six microchannels. The experiment...

Integration of nanofluids with solar collectors to enhance collector's thermal performance stands out as one of the most effective techniques owning to nanofluids favorable thermo-physical properties. By improving the thermo-physical properties of heat transfer fluids, nanofluids enhance the efficiency of thermal systems by improving the thermal en...

Organic phase change materials are extensively researched for passive cooling of electronic components due to the high heat of fusion, however, owing to the issue of thermal conductivity, it is difficult to improve the thermal performance of electronic components. However, the effective thermal performance of modern electronic devices is becoming p...

Organic phase change materials are extensively researched for passive cooling of electronic components due to the high heat of fusion, however, owing to the issue of thermal conductivity, it is difficult to improve the thermal performance of electronic components. However, the effective thermal performance of modern electronic devices is becoming p...

This work aims to reduce the energy consumption of existing buildings through retrofitting and converting them into net zero energy buildings (NZEBs). Various retrofits for an existing academic building were modeled and analyzed using REVIT software. Energy consumption was reduced to approximately 34% through retrofits, and a Solar System of 41.6 k...

The advancement of nanotechnology has demonstrated the ability of metal-oxide-based nanofluids (NFs) to produce high heat flux in microscale thermal applications. Convective heat transfer (HTC) and flow characteristics (pressure drop (ΔP) and friction factor (f)) of aqueous ZnO NFs' within a circular mini tube (Di = 1.0 mm, L = 330 mm) were analyze...

In the modern digital world, electronic devices are being widely employed for various applications where thermal performance represents a significant technical challenge due to continued miniaturization, high heat generated in the system, and non-uniform high-temperature causing failure. Phase change materials (PCMs) owing to the immense heat of fu...

Pakistan is a developing country that faces severe energy crises due to the increased use of energy. The purpose of this study is energy transition by designing a strategy for the adoption of renewable energy policies in the entire energy system by using all renewable energy resources to forecast future energy needs and carbon emission mitigation p...

This experimental study is focused on heat transfer performance and pressure drop characteristics of ZnO/DIW-based nanofluids (NFs) in horizontal mini tubes of different (1.0–2.0 mm) diameters. Different mass concentrations (0.012–0.048 wt. %) of nanoparticles (NPs) were tested with varying fluid flow rates (12–24 ml/min) of NFs. The thermal conduc...

Water scarcity is a global challenge and is expected to affect two-thirds of the world population in the coming decades. The augmentation of freshwater resources is the need of the hour, in perspective of rapid globalization and the rise in world population with every passing day. The current investigation evaluates the performance of an integrated...

The availability of accurate and reliable solar radiation data is very important to explore solar energy potential for commercial power plants. This study presents the validation of global horizontal irradiance (GHI) from McClear model under clear-sky and all-sky conditions against measured data for complex topography of Pakistan. The McClear GHI s...

Due to rapid industrialization, and depletion of fossil fuels, alternative renewable resources are mandatory, where solar thermal energy is one of the promising alternate. In this study, an experimental investigation was conducted to analyze the thermal performance of different photovoltaic-modules under varying climate conditions. These include th...

Due to the rapid increase in environmental degradation and depletion of natural resources, the focus of researchers is shifted from economic to socio-environmental problems. Blockchain is a disruptive technology that has the potential to restructure the entire supply chain for sustainable practices. Blockchain is a distributed ledger that provides...

Using crumb rubber particles obtained from end-of-life tires as aggregate in concrete can reduce the environmental overburden caused by the huge accumulation of these scrap tires. However, reduction in the mechanical properties of concrete is observed with the incorporation of rubber aggregates. To counter this detrimental effect of crumb rubber in...

The United Nations (UN) has introduced 17 Sustainable Development Goals (SDGs) intending to achieve a conventional trio of social, economic, and environmental prosperity across the world. Pakistan is making a fair contribution to SDG achievement under its ‘Vision 2025’. However, the introduced strategy for SDG implementation is a sectoral based app...

A major problem faced by Phase Change Materials(PCM) based latent heat thermal energy storage systems is the slow thermal response. In this study, the feasibility of nano phase change materials composites is investigated experimentally by using various types of nanoparticles in PCM, to improve thermal response by increasing the thermal conductivity...

Metal-oxide based nanofluids have grabbed many researchers' attention because of their better dispersion stability and enhanced thermophysical properties for potential heat transfer applications. This work presents an experimental investigation of well-dispersed ZnO nanoparticles' dispersion stability and thermophysical properties in deionized wate...

Microchannels with microencapsulated phase change slurry (mPCM) have gained attention due to their compactness and large surface area to volume of fluid ratio. The phase change process also helps in sustaining high heat exchange over small temperature changes. This paper is focused on numerical investigation of heat transfer characteristics of mPCM...

https://link.springer.com/article/10.1007/s10973-020-10372-z

Nanofluids have recently attracted attention of many researchers due to their growing potential applications in heat transfer devices. They possess extraordinary thermal and rheological characteristics compared to the respective base fluids. However, the preparation of nanofluids and their dispersion stability is a matter of serious concern, severa...

With advancement of nanoscience, ?nanofluids? are becoming quite popular among thermal engineers. High thermal conductivity, relatively less settling speed, and higher surface area of nanoparticles are a few key promoting properties. The last two decades have seen dramatic progress towards using nanoparticles in industrial applications. However, th...

Quality of any reliability analysis depends strongly on the analyst’s ability to identify all required functions. Failure is a basic concept of any reliability analysis. Also, the plant equipment’s reliability is of vital importance in any production operation. The objective of the present study was to investigate the failure modes of critical syst...

Marine engineering is very important as it is directly related to human life. 70% of our Earth is seas and rivers and most of the times the driving forces are provided by the flow of water which both provides buoyancy (to support the weight) and pushing forces due to flow. Balancing of the component is of main concern over the water surface and if...

Drag reduction have always been the most important area of interest for a decade with many advancement in it, there has been continuous research on the flow behavior of wing with different geometric combination. Previous studies suggest that Riblets are 7% effective given that they are made with correct sizing. According to test conducted shows the...

In many regions of the world the management of energy conserves is a challenging task. Numerous factors inclusive of economic, environmental and political are having substantial effects on energy management practices, leading to a variety of reservations in appropriate decision making. Energy Management System (EnMS) provides a standardized roadmap...

A reverse osmosis system was designed and powered by photovoltaic panels for the production of potable water. Elements of system design and integration were identified and optimized. These include capacity planning, standalone capabilities by providing battery storage system and economic analysis. The experimentation on the system, performed in the...

The global energy demand has enlarged in recent years as a result of industrial development and population growth. This scenario has even intensified in Pakistan affecting industrial as well as domestic and agriculture sectors, causing 2-3% of GDP loss annually. According to Pakistan Energy Year Book 2012, Pakistan generation capacity being 95365GW...