energy analyses and drying kinetics of chamomile

Energy Analysis of Pid Controlled Heat Pump Dryer

In this experimental study a heat pump dryer was designed and manufactured in which drying air temperature was controlled PID Manufactured heat pump dryer was tested in drying kiwi avocado and banana from among tropical fruits and energy and exergy analyses were made Drying air temperature changed between 40 oC - 40 2 oC while drying the tropical fruits

Performance Evaluation and Drying Kinetics for Solar

Mar 26 2020Performance Evaluation and Drying Kinetics for Solar Drying of Hygroscopic Crops in Vacuum Tube Assisted Hybrid Dryer Integrated Hybrid Solar Drying System and Its Drying Kinetics of Chamomile " Numerical Analysis on Thermal Energy Storage Device With Finned Copper Tube for an Indirect Type Solar Drying System

The comparative kinetic study of non

Isothermal reduction kinetics of nickel oxide using hydrogen: Conventional and Weibull kinetic analysis Parameter estimation of the Weibull probability distribution Comparative study of the isothermal pyrolysis kinetic behaviour of some oil shales and coals

Performance comparison of mixed mode and indirect mode

Mar 28 2019This study focuses on energy and drying kinetic analyses of Curcuma zedoaria (white turmeric) dried in mixed and indirect active parallel flow solar dryers Dryer efficiency specific energy consumption and drying rate are studied The overall dryer efficiency of mixed mode (MFSCD) is 26 5% higher than indirect mode (IFSCD) solar dryer

Design and Testing of Solar Dryer for Drying Kinetics of

Innovation Park using a solar drying system using double-pass solar collector with finned absorber takes 7 hours to reduce the initial moisture content of 94 6% to 8 33% equivalent to 120 grams to 11 grams Drying process on the average solar radiation about 600W/m2 and drying air flow rate 0 0613kg/s Change in mass was recorded every 15 minutes

Degradation Kinetics of Bioactive Compounds and

In this study the drying kinetics of pomegranate arils the degradation kinetics of some bioactive compounds and changes in color values during the drying process were investigated The drying process was performed by a forced air circulating oven at 55 65 and 75C Drying times were calculated to be 1 020 520 and 330 min respectively

Heat Pump Drying of Fruits and Vegetables: Principles and

Heat pump technology has been used for heating ventilation and air-conditioning in domestic and industrial sectors in most developed countries of the world including South Africa However heat pump drying (HPD) of fruits and vegetables has been largely unexploited in South Africa and by extension to the sub-Saharan African region Although studies on heat pump drying

Lab 4

Lab 4 - Conservation of Mechanical Energy Introduction When a body moves some things—such as its position velocity and momentum—change It is interesting and useful to consider things that do not change The total energy is a quantity that does not change we say that it is conserved during the motion There are several forms of energy with which you may be

Drying Kinetics of Rice Straw under Isothermal and

A thermogravimetric approach was applied to study the drying of powdered rice straw particles to determine the drying kinetics under isothermal and nonisothermal drying conditions The isothermal drying experiments were performed at 50 60 70 and 80 C and the nonisothermal drying experiments were performed at a heating rate of 10 C/min from 30 to 140 C The

Review Low

better product color and drying kinetics Researchers suchasDostie Seguin Maure Ton-That andChatingy (1989) andCarrollandChurchill(1986)havereported shortened drying time with improved product quality with intermittent heat input According to Ginzburg (1969) the effectiveness of drying is increased by the application of intermittent irradiation

Energy Exergy and Thermodynamics

2 Kinetic - the energy of movement as in a spinning top or traveling car Kinetic energy can be converted to potential and back again in some systems without a loss of potential energy to heat The amount of kinetic energy that a body possesses is dependent on the speed of its motion and its mass

Drying kinetics and quality analysis of black turmeric

Cited by: Atalay Halil 2019 Performance analysis of a solar dryer integrated with the packed bed thermal energy storage (TES) system Energy Elsevier vol 172(C) pages 1037-1052 Karthikeyan A K Murugavelh S 2018 Thin layer drying kinetics and exergy analysis of turmeric (Curcuma longa) in a mixed mode forced convection solar tunnel dryer Renewable Energy

Review Low

better product color and drying kinetics Researchers suchasDostie Seguin Maure Ton-That andChatingy (1989) andCarrollandChurchill(1986)havereported shortened drying time with improved product quality with intermittent heat input According to Ginzburg (1969) the effectiveness of drying is increased by the application of intermittent irradiation

Energy and exergy analysis drying kinetics modeling and

Oct 19 2018The aim of this study was to evaluate the effect of curing and microwave power levels on energy analysis drying characteristics modeling and quality parameters of turmeric slices in microwave dryer Drying experiments were carried out for fresh and cured turmeric slices Four microwave power levels of 30% 50% 80% and with the total output power

Mathematical modelling of thin layer hot air drying of

Feb 15 2011The whole drying process of carrot pomace took place in a falling rate period except a very short accelerating period at the beginning The average values of effective diffusivity ranged from 2 74 10 −9 to 4 64 10 −9 m 2 /s for drying carrot pomace The activation energy value was 23 05 kJ/mol for the whole falling rate period

[PDF] Drying characteristics and quality of lemon slices

In this research a Coulomb force assisted heat pump (CF-HP) dryer was invented for the purpose of improving the drying characteristics and product quality of biomaterials As compared to heat pump drying alone the assistance of Coulomb force in heat pump dryer enhanced the drying rates and effective moisture diffusivity of lemon slices up to 26% which eventually shortened the total drying

Chemical reaction

Chemical reaction - Chemical reaction - Energy considerations: Energy plays a key role in chemical processes According to the modern view of chemical reactions bonds between atoms in the reactants must be broken and the atoms or pieces of molecules are reassembled into products by forming new bonds Energy is absorbed to break bonds and energy is evolved

Atmospheric Thermodynamics

the kinetic energy equals the potential energy of the molecule We now have p=2nu˙trans x (1 11) We also note the gaseous motion is obviously three-dimensional and there is kinetic energy in each of these directions Assuming (through the equipartition principle) that the energy is shared equally among each degree of freedom: m v2 x 2 =m v2 y

Energy analyses and drying kinetics of chamomile

AbstractDrying characteristics and energy aspects as well as mathematical modeling of thin layer drying kinetics of chamomile in a microwave-convective dryer are reported in this article Drying experiments were carried out at 8 microwave power levels (200–900W) air temperature of 50C and air velocity of 0 5m/s

Drying technologies for sewage sludge

Flowsheet of a belt drying plant using waste heat By creating a thermal and material link be - tween a sewage sludge drying plant and a cement kiln an innovative concept is obtained for conserving resources (energy and minerals) Here the thermal energy for drying the sewage sludges comes entirely from the waste gases from the clinker cooler

Evaluation of seven different drying treatments in respect

Sep 17 2015The analysis of quality and antioxidant activity of green tea extracts J Med Plants Res 2011 5:811–816 [Google Scholar] Arslan D Ozcan MM Evaluation of drying methods with respect to drying kinetics mineral content and color characteristics of rosemary leaves Energy Convers Manag 2008 49:1258–1264 doi: 10 1016/j enconman 2007 08 005

Onion dehydration: a review

Apr 27 2011Most of the modeling of drying kinetics has been done for hot air drying method These models can be tested for other drying methods also Moreover there is a scope for establishing proper correlation between drying conditions and energy consumption

Kinetics catalysis and mechanism of methane steam reforming

microkinetic model of steam and dry reforming of methane has been developed for Rh(111) and Ni(111) in this thesis While there is extensive literature on it the standard reference on the mechanism and kinetics of MSR is that of Xu and Froment who proposed a 13 step mechanism

5 1 2 Reactions Transformations

The chemistry of gasification is quite complex and is accomplished through a series of physical transformations and chemical reactions within the gasifier Some of the major chemical reactions are shown in the diagram below In a gasifier the carbonaceous feedstock undergoes several different processes and/or reactions:

Drying Kinetics of Rice Straw under Isothermal and

Jun 19 2012A thermogravimetric approach was applied to study the drying of powdered rice straw particles to determine the drying kinetics under isothermal and nonisothermal drying conditions The isothermal drying experiments were performed at 50 60 70 and 80 C and the nonisothermal drying experiments were performed at a heating rate of 10 C/min from 30 to

Investigating the Influence of Infrared Drying Method on

The Linden (Tilia platyphyllos Scop ) is a highly popular herbal plant due to its central nervous system properties In this study thin layer drying kinetics of linden leave samples were experimentally investigated in an infrared (IR) dryer In order to select the appropriate model for predicting the drying kinetics of linden leaves eleven thin layer semi theoretical theoretical