16 research outputs found

    Energetic and Exergetic Evaluation of Biomass Fired Water Heating System

    Get PDF
    This paper deals with thermal and exergy efficiencies of biomass fired water heating system. Water heating system is extensively suitable to generate hot water in rural areas. The developed water heating system was tested with Desi babul (Acacia nilotica) wood. Thermal and exergy efficiencies of the system were estimated at 54.5 percent and 6.79 percent, respectively.Citation: Panwar, N. L., and Paul, A. S. (2017). Energetic and Exergetic Evaluation of Biomass Fired Water Heating System. Trends in Renewable Energy, 3, 153-159. DOI: 10.17737/tre.2017.3.2.004

    Design and techno economic evaluation of biomass gasifier for industrial thermal applications

    Get PDF
    This paper addresses the design, performance and economic evaluation of biomass based open core downdraft gasifier for industrial process heat application. The gasifier is having feed rate as 90 kg h-1 and producing about 850 MJ h-1 of heat. The gasifier has been installed in M/S Phosphate India Pvt. Limited, Udaipur (27° 42' N, 75° 33' E) for heating and concentrating phosphoric acid. The system is in position to save 20 L of light diesel oil per hour. The techno economics of the designed system is also presented in the paper.Key words: Biomass, gasifier, downdraft, feed stock

    Measurements of the production cross-section for a Z boson in association with b- or c-jets in proton–proton collisions at √s = 13 TeV with the ATLAS detector

    Get PDF
    This paper presents a measurement of the production cross-section of a Z boson in association with bor c-jets, in proton–proton collisions at √s = 13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 140 fb−1. Inclusive and differential cross-sections are measured for events containing a Z boson decaying into electrons or muons and produced in association with at least one b-jet, at least one c-jet, or at least two b-jets with transverse momentum pT > 20 GeV and rapidity |y| < 2.5. Predictions from several Monte Carlo generators based on next-to-leading-order matrix elements interfaced with a parton-shower simulation, with different choices of flavour schemes for initial-state partons, are compared with the measured cross-sections. The results are also compared with novel predictions, based on infrared and collinear safe jet flavour dressing algorithms. Selected Z+ ≥ 1 c-jet observables, optimized for sensitivity to intrinsic-charm, are compared with benchmark models with different intrinsic-charm fractions

    Constraints on simplified dark matter models involving an s-channel mediator with the ATLAS detector in pp collisions at s = 13 TeV

    Get PDF

    Experimental studies on hemi cylindrical walk-in type solar tunnel dryer for grape drying

    No full text
    A walk-in type hemi cylindrical solar tunnel dryer has been built with heat protective north wall at College of Dairy and Food Science Technology, Udaipur, India for drying agricultural & horticulture product on large scale. In this paper attempt has been made to evaluate the performance of developed dryer to dry the seedless grapes (mutant: Sonaka). The study show that chemically untreated grapes took seven days to dry at 16% (wb) moisture content. The temperature gradient inside the tunnel dryer is about 10-28 °C during the clear day, which is quite sufficient to dry agricultural commodities.Solar tunnel dryer Grape drying North wall Drying time

    Role of renewable energy sources in environmental protection: A review

    No full text
    Renewable technologies are considered as clean sources of energy and optimal use of these resources minimize environmental impacts, produce minimum secondary wastes and are sustainable based on current and future economic and social societal needs. Sun is the source of all energies. The primary forms of solar energy are heat and light. Sunlight and heat are transformed and absorbed by the environment in a multitude of ways. Some of these transformations result in renewable energy flows such as biomass and wind energy. Renewable energy technologies provide an excellent opportunity for mitigation of greenhouse gas emission and reducing global warming through substituting conventional energy sources. In this article a review has been done on scope of CO2 mitigation through solar cooker, water heater, dryer, biofuel, improved cookstoves and by hydrogen.Greenhouse gases CO2 mitigation Sustainable development Renewable energy sources

    Experimental Investigation of Jute Fabric / Nano-SiO2 Reinforced Epoxy Composite

    No full text
    The effect of Nano-SiO2 powder on the mechanical behavior of a jute fabric/epoxy composite has been investigated experimentally. Due to qualities like biodegradability, strength, light weight, and affordability, composites are preferred for static and dynamic applications. Nano – SiO2 powder size of 15 nm was used as a filler material. Hand lay-up techniques were used to develop the composites, which had filler contents of 2%, 3%, and 5% Nano – SiO2 by weight of the epoxy resin. Tensile, Impact, Wear, Moisture Absorption, and Thermo – Gravimetric Analysis were used to characterize the mechanical properties of the composites. The results reveal that the jute/epoxy composite is significantly improved by the hybridization process using fillers. The maximum improvement in the composite’s tensile (44.09 MPa), impact (4 joules), wear, moisture absorption (0.5–4%), and thermos-gravimetric (2.96%) properties is achieved when 2 wt.% of nano-SiO2 is added

    Development of drying system by using internet of things for food quality monitoring and controlling

    No full text
    One of the essential aspects in managing food safety is the drying, which helps to preserve food quality and extend the shelf life of food products. The temperature, relative humidity (RH), and air velocity in dryers should be carefully monitored and maintained to ensure food quality and safety during the drying process. Also, the components of heat pump dryers are at risk due to the electric current, the high temperature surrounding the condensing unit's compressor, and the high air velocity of the drying environment. These elements affect the quality of the foods being dried, and being able to communicate alerts in real-time is essential for taking precautions against hazards that can damage the dryer's internal components. Food technology's IoT-based control (IoT-BC) system with multipurpose sensors offers options for managing the post-harvest quality of leaves as they are being dried. This study set out to design and evaluates an IoT-BC system in order to remotely control, alert of imminent hazards, and monitor the microclimate parameters, including RH, temperature, and air velocity. The impacts of the created IoT-based drying system on the quality of dried leafy vegetables were also investigated utilizing a unique dryer as a case study. The results showed that the created IoT-BC system accurately maintained the drying environment, provided reliable data about the internal microclimate atmosphere of the dryer, and provided the appropriate alarm in case of an emergency and this was based on real-time data analyses. The most important quality characteristics for dried leaves were not significantly different between the IoT-based dryer and the conventional dryer dependant on drying time. Rehydration capacity decreased with the increase in the drying air temperature from 40 to 70 °C and was maximum (6.48) at 40 °C for coriander leaves and maximum (5.59) at 40 °C for Mint leaves dried in IoT based dryer. Maximum crude fibre and protein contents for mint leaves dried in an IoT-based drier were at 40 °C and were 4.97 mg/100 g and 10.62 mg/100 g, respectively. Maximum crude fibre and protein contents for coriander leaves dried in this method were 3.76 mg/100 g and 12.23 mg/100 g, respectively. The IoT based dryer kept the leaves' superior qualities throughout the drying process as a result
    corecore