mathematical modeling on thin-layer heat pump drying

Drying Kinetics and Mathematical Modeling of Casuarina

Drying Kinetics and Mathematical Modeling of Casuarina Equisetifolia Wood Chips at Various Temperatures Deepak Sridhar1 Gattumane Motappa Madhu2 * Received 05 December 2014 accepted after revision 23 February 2015 Abstract Casuarina equisetifolia wood is extensively used as fire wood and is also being used extensively in gassifiers Drying is an important procedure which has to be

Mathematical modelling on hot air drying of thin layer

The hot convective drying of fresh tilapia fillets was evaluated in a heat pump dryer The influence of the drying temperature (35 45 and 55C) hot air velocity (1 50 2 50 and 3 50 m/s) and thickness (3 5 and 7 mm) of the tilapia fillets on the moisture ratio and drying rate has been studied It shows that drying process took place in falling rate periods The experimental drying data of

Studies on the Drying Modle and Technology of Tilapia by

Thin layer heat pump drying of fresh tilapia fillets was investigated Meanwhile the suitable mathematical model which can be used to describe the relationship of moisture ratio and drying time was established by SPSS17 0 in this paper The proof test results showed that Page model and Modified Page model were good due to the predicted values consistent with the observed values and Page

Experimental Investigation on Dill Drying in a Solar

Experimental Investigation on Dill Drying in a Solar-Assisted Heat Pump Dryer H and S R Moosavi Seyedi1 ABSTRACT In this study a solar dryer assisted with heat pump was developed and thin layer drying of dill was carried out at air temperatures of 40 50 and 60C and air velocities of 0 5 1 and 1 5 ms-1 Also the drying rates Specific Moisture Extraction Rate (SMER) and energy

Mathematical Modeling on Hot Air Drying of Thin Layer

Mathematical Modeling on Hot Air Drying of Thin Layer Fresh Tilapia Fillets The hot convective drying of fresh tilapia fillets was evaluated in a heat pump dryer The influence of the drying temperature (35 45 and 55C) hot air velocity (1 50 2 50 and 3 50 m/s) and thickness (3 5 and 7 mm) of the tilapia fillets on the moisture ratio and drying rate has been studied It shows that

Modeling the Thin‐Layer Drying of Fruits and Vegetables: A

This paper presents a comprehensive review of modeling thin‐layer drying of fruits and vegetables with particular focus on thin‐layer theories models and applications since the year 2005 The thin‐layer drying behavior of fruits and vegetables is also highlighted The most frequently used of the newly developed mathematical models for thin‐layer drying of fruits and vegetables in the

Advanced exergoeconomic analysis of a gas engine heat pump

Shi Q Zheng Y Zhao Y Mathematical modeling on thin-layer heat pump drying of yacon (Smallanthus sonchifolius) slices Energy Convers Manage 2013 71:208–16 [9] Kaleta A Grnicki K Winiczenko R Chojnacka A Evaluation of drying models of apple (var Ligol) dried in a ?uidized bed dryer Energy Convers Manage 2013 67:179–85 [10] Rahman SMA Saidur R Hawlader MNA An economic

Heat pump drying of safed musli (Chlorophytum

ABSTRACT : Thin layer drying experiments under controlled conditions were conducted for safed musli roots in heat pump dryer at 30 35 40 and 45C and hot air dryer at 35 40 and 45C with relative humidity's ranging from 19 to 55% The two-term model showed goodness of fit for drying of safed musli root at 35 40 and 45C in HPD and HAD where as logarithmic model showed goodness of fit

Mathematical modelling of diced konjac corms drying in a

Drying process can be helpful in preserving KGM during long storage periods However the existing drying systems are often slow and lead to drying delays and subsequently quality reduction of the dried product Given the economic importance of KGM new more efficient drying systems have to be developed The present study focuses on the

Experimental Investigation on Dill Drying in a Solar

Experimental Investigation on Dill Drying in a Solar-Assisted Heat Pump Dryer H and S R Moosavi Seyedi1 ABSTRACT In this study a solar dryer assisted with heat pump was developed and thin layer drying of dill was carried out at air temperatures of 40 50 and 60C and air velocities of 0 5 1 and 1 5 ms-1 Also the drying rates Specific Moisture Extraction Rate (SMER) and energy

Mathematical Modeling of Kinetics of Thin

The thin-layer drying kinetics of apple slices was experimentally investigated in a laboratory convective dryer and the mathematical modeling using thin-layer drying models present in the literature was performed The main objective of the study was the verification of models already developed Experiments were performed at air temperature between 40 and 80 C velocity of 0 5 1 and 2 m/s

Mathematical Modeling and Performance Analysis of a

energies Article Mathematical Modeling and Performance Analysis of a New Hybrid Solar Dryer of Lemon Slices for Controlling Drying Temperature Wengang Hao 1 Shuonan Liu 1 Baoqi Mi 1 and Yanhua Lai 1 2 * 1 School of Energy and Power Engineering Shandong University Jinan 250061 China haowengangDL163 (W H ) liusnnd163 (S L ) sduszmbq163 (B M )

Thin layer modeling of tom yum herbs in vacuum heat

Thin layer vacuum heat pump drying experiments were conducted to determine drying models for Tom Yum herbs (chili lemon grass kaffir lime leaf and galangal slice) The drying experiments were conducted in a vacuum heat pump dryer at a constant drying pressure of 0 2 bars and drying temperatures ranging from 50C to 65C The experimental results were fitted to a number of well

Sze Pheng Ong

Mathematical modeling of thin layer drying of salak SP Ong CL Law Journal of applied sciences 9 (17) 3048-3054 2009 24: 2009: Drying characteristics of Orthosiphon stamineus Benth by solar-assisted heat pump drying SH Gan MX Ng TC Tham LS Chua R Aziz MR Baba L Chuah Abdullah Drying Technology 35 (14) 1755-1764 2017 17: 2017: Effect of pre-treatment and drying method on

Sze Pheng Ong

Mathematical modeling of thin layer drying of salak SP Ong CL Law Journal of applied sciences 9 (17) 3048-3054 2009 24: 2009: Drying characteristics of Orthosiphon stamineus Benth by solar-assisted heat pump drying SH Gan MX Ng TC Tham LS Chua R Aziz MR Baba L Chuah Abdullah Drying Technology 35 (14) 1755-1764 2017 17: 2017: Effect of pre-treatment and drying method on

Mathematical modeling on thin

01/07/2013However based on the authors' knowledge little information is available on the heat pump drying kinetics and mathematical modeling of yacon Therefore the objectives of this study were: (1) to determine the effect of drying temperature and air velocity on the heat pump drying kinetics and quality characteristics (total color difference shrinkage rate and rehydration rate) of dried

MATHEMATICAL MODELING OF THIN‐LAYER DRYING OF

MATHEMATICAL MODELING OF THIN‐LAYER DRYING OF JACKFRUIT LEATHER MATHEMATICAL MODELING OF THIN‐LAYER DRYING OF JACKFRUIT LEATHER CHOWDHURY M M I BALA B K HAQUE M A 2011-12-01 00:00:00 INTRODUCTION Jackfruit is one of the major fruits in Bangladesh and it is also the national fruit of Bangladesh Annual production of jackfruit is 926 000 tons ( BBS 2006 )

Experimental Investigation on Dill Drying in a Solar

Experimental Investigation on Dill Drying in a Solar-Assisted Heat Pump Dryer H and S R Moosavi Seyedi1 ABSTRACT In this study a solar dryer assisted with heat pump was developed and thin layer drying of dill was carried out at air temperatures of 40 50 and 60C and air velocities of 0 5 1 and 1 5 ms-1 Also the drying rates Specific Moisture Extraction Rate (SMER) and energy

Kinetics and mathematical modeling of thin layer drying of

Also in another research mathematical modeling of thin layer drying of Cuminum cyminum seeds was performed for which R 2 and RMSE values were obtained as 0 99 and 0 02 respectively (Zomorodian Moradi 2010) Therefore it can be concluded that the obtained model in the present research is a relatively good model for predicting of thin

Mathematical Modeling of Thin Layer Drying

These include the use of heat pump [6] microwave assist [7] Hot air assisted Radio frequency [8] Hot air drying and greenhouse drying [9] Many studies carried out using these dryers were conducted in thin layer This type of drying has been described using mathematical model which fall into three groups namely theoretical semi-theoretical and empirical [4] Of the three groups Semi

Thin

Seven thin-layer mathematical models cited in the literature had been used for the study These models were applied for different trays placed in the dryer The result of the research and experimentation showed that the Page model fits best for drying in the steam-based dryer and open sun drying Experimental results showed 63 33% saving in drying time and the drying efficiency was found as

Submission DergiPark

In the present work the effects of some parametric values on the thin layer drying process of ginger slices were investigated Drying was done in the laboratory by using cyclone type convective dryer The drying air temperature was varied as 40 50 60 and 70 ˚C and the air velocity is 0 8 1 5 and 3 m/s All drying experiments had only falling rate period

Mathematical Modeling of Hot Air Drying of Thin Layer

The influences of drying temperature and hot air speed on the moisture ratio M R and the drying velocity U of litchi were studied by self-building heat pump drying device The results showed that drying process of litchi occurred in the falling rate period and the moisture transfer was controlled by internal diffusion Nine different dynamic models were fitted nonlinearly by using the drying