Air flow distribution; Convective drying; Dehydration; Energy efficiency; Heat recovery; Lychee; Product quality

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Nagle, Marcus, Janjai, Serm, Mahayothee, Busarakorn and Müller, Joachim (2011) Analysis of dryer performance for the improvement of small-scale litchi processing. International Journal of Food Science and Technology, 46 (3). pp. 561-569. ISSN 0950-5423 (Print), 1365-2621 (Online) (doi:https://doi.org/10.1111/j.1365-2621.2010.02522.x)

Cassava starch; design guidelines; energy efficiency; modeling; pneumatic dryer

Chapuis, A., Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Méot, J. M., Sriroth, K. and Tran, T. (2016) Pneumatic drying of cassava starch: Numerical analysis and guidelines for the design of efficient small-scale dryers. Drying Technology, 35 (4). pp. 393-408. ISSN 0737-3937 (Print), 1532-2300 (Online) (doi:https://doi.org/10.1080/07373937.2016.1177537)

Cassava; dryer design; modelling; pneumatic dryer; starch

Chapuis, Arnaud, Lancement, Charlene, Giraldo, Francisco, Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Moreno, Martin, Dufour, Dominique and Tran, Thierry (2022) Extensive experimental validation of a model for pneumatic drying of cassava starch. Drying Technology, 41 (1). pp. 122-136. ISSN 0737-3937 (Print), 1532-2300 (Online) (doi:https://doi.org/10.1080/07373937.2022.2087668)

Consumer preference, Response surface methodology, Circular ideal-point regression, Product optimization, Market acceptance, Lychee

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Nagle, Marcus, Mahayothee, Busarakorn, Udomkun, Patchimaporn, Janjai, Serm and Müller, Joachim (2014) Optimal physicochemical properties of dried litchis for Thai consumers. International Journal of Agricultural and Biological Engineering, 7 (5). pp. 103-110. ISSN 1934-6344 (Print), 1934-6352 (Online) (doi:https://doi.org/10.3965/j.ijabe.20140705.011)

Convection dryer, Hot-air dryer, Heat consumption, Product homogeneity, Moisture content, Lychee

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Janjai, Serm, Mahayothee, Busarakorn and Müller, Joachim (2014) Batch uniformity and energy efficiency improvements on a cabinet dryer suitable for smallholder farmers. Journal of Food Science and Technology, 52 (8). pp. 4819-4829. ISSN 0022-1155 (Print), 0975-8402 (Online) (doi:https://doi.org/10.1007/s13197-014-1544-y)

Convection dryer; Cost savings; Energy efficiency; Heat consumption; Lychee

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Janjai, Serm, Mahayothee, Busarakorn and Müller, Joachim (2013) Improved energy efficiency of farmers' cooperative litchi drying operation in Northern Thailand. International Journal of Food Science and Technology, 48 (11). pp. 2376-2383. ISSN 0950-5423 (Print), 1365-2621 (Online) (doi:https://doi.org/10.1111/ijfs.12228)

Convective dryers; Energy efficiency; Pneumatic dryer; Flash dryer; Tunnel dryer; Specific energy consumption; Mass and energy balance; Heat losses; Energy saving

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Chapuis, Arnaud, Müller, Joachim and Abass, Adebayo (2015) Tunnel dryer and pneumatic dryer performance evaluation to improve small-scale cassava processing in Tanzania. Journal of Food Process Engineering, 40 (1):e12274. ISSN 0145-8876 (Print), 1745-4530 (Online) (doi:https://doi.org/10.1111/jfpe.12274)

Discrete Element Method

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Using Participatory Technology Development and Discrete Element Method to develop technologies for rural enterprises in low-income countries. In: DMU PGR Seminar, 18 November 2021, De Montfort University, Leicester UK. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Discrete Element Method and its many applications. In: Church & Dwight Colloquium, 3 November 2021, Church & Dwight, Bowles Well Gardens, Folkestone, Kent Ct19 6Pq, Folkestone CT19 6PQ. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Applications of Discrete Element Method (DEM) in engineering and science. In: Faculty of Engineering and Science Research Seminar, 27 October 2021, University of Greenwich, Faculty of Engineering and Science. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Applying Discrete Element Method (DEM) to develop postharvest technologies. In: Agrartechnisches Seminar WiSe2021/22, 25 October 2021, University of Hohenheim, Germany. (Unpublished)

Discrete Elment Method

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Using Discrete Element Method (DEM) to develop postharvest technologies. In: Simulation DEM, 16 November 2021, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Using Discrete Element Method (DEM) to develop agricultural machinery. In: Discrete element method for industrial or commercial applications, 15 November 2021, Alvan Blanch, Chelworth, SN16 9SG. (Unpublished)

Fish farming; DEM; simulation

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) How simulation-driven participatory technology development has revolutionized fish farming. [Video] (Unpublished)

Flash dryer; Energy efficiency; Heat input; Specific energy consumption; Minimum air flow rate

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Tran, Thierry, Chapuis, Arnaud, Müller, Joachim and Abass, Adebayo (2016) Improved energy performance of small-scale pneumatic dryers used for processing cassava in Africa. Biosystems Engineering, 151. pp. 510-519. ISSN 1537-5110 (doi:https://doi.org/10.1016/j.biosystemseng.2016.10.001)

appropriate technologies

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) Developing appropriate technologies to reduce food waste. In: Inspiring Engineering lecture series, 5 Feb 2019, University of Greenwich, P129, Wardroom. (Unpublished)

capacity building

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Capacity building on dimensioning, design and operation of small-scale pneumatic dryers. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Capacity building on energy performance evaluation of a pneumatic dryer with adjustable drying-duct length. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Identifying capacity building needs for the cassava sector: a workshop with equipment manufacturers, food processors and service providers. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

capacity building; heat exchanger

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Komlaga, Gregory (2020) Capacity building on designing and manufacturing shell-and-tube heat exchangers. Technical Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

cassava peeling

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) Cassava peeling machine [video]. [Video] (Unpublished)

cassava peeling machine; construction guide

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2022) Cassava peeling machine construction guide. Manual. Natural Resources Institute, University of Greenwich, London.

cassava press

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Novel cassava dewatering equipment. [Video]

cassava processing

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) Cassava factory inside a shipping container. [Video] (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Scaling out energy-efficient pneumatic drying technology in Tanzania. Manual. CGIAR Research Program on Roots, Tubers and Bananas, London, University of Greenwich.

Parmar, Aditya ORCID: 0000-0002-2662-1900 and Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Solar technology casts a bright future for improved cassava processing. Natural Resources Institute, University of Greenwich, London, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Developing an innovative press to solve a cassava processing bottleneck. In: Summers, Gillian and Martin, Adrienne ORCID: 0000-0001-9305-7302 , (eds.) Natural Resources Institute Annual Review 2019-2020. NRI Annual Review . Natural Resources Institute, University of Greenwich, London, University of Greenwich, p. 14.

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) What you need to know before buying a HAMMERMILL. Manual. University of Greenwich, London.

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) What you need to know before buying a CASSAVA FACTORY. [Working Paper]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) What you need to know before buying a CASSAVA GRATER. [Working Paper]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) What you need to know before buying a CASSAVA PEELER. [Working Paper]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) What you need to know before buying a CASSAVA PRESS. [Working Paper]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2019) What you need to know before buying a PNEUMATIC DRYER. [Working Paper]

cassava processing centre

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2022) Continuous flow cassava flour factory. Manual. Natural Resources Institute, University of Greenwich, London.

cassava processing, capacity building; pneumatic dryer

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2017) Capacity building on energy performance evaluation of a pneumatic dryer with adjustable drying-duct length. [Working Paper]

cassava, cyclone separators, sub-Saharan Africa, technical manual

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Parmar, Aditya ORCID: 0000-0002-2662-1900 (2021) How to evaluate the performance of CYCLONES. [Working Paper]

cassava, grater, grating machine, sub-Saharan Africa, technical manual

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Parmar, Aditya ORCID: 0000-0002-2662-1900 (2021) How to evaluate the performance of CASSAVA GRATERS. [Working Paper]

cassava, hammermills, sub-Saharan Africa, technical manual

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Parmar, Aditya ORCID: 0000-0002-2662-1900 (2021) How to evaluate the performance of HAMMERMILLS. [Working Paper]

cassava, peeling machine, sub-Saharan Africa, technical manual

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Parmar, Aditya ORCID: 0000-0002-2662-1900 (2021) How to evaluate the performance of CASSAVA PEELING MACHINES. [Working Paper]

cassava, pneumatic dryers, sub-Saharan Africa, technical manual, food industry

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Parmar, Aditya ORCID: 0000-0002-2662-1900 (2021) How to evaluate the performance of CASSAVA DRYERS. [Working Paper]

cassava, presses, pressing machine, sub-Saharan Africa, technical manual

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Parmar, Aditya ORCID: 0000-0002-2662-1900 (2021) How to evaluate the performance of Cassava Presses. [Working Paper]

cassava; flow properties; warren-spring; tensile strength; cohesion; internal friction

Sarnavi, Hamed J., Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Salehi, Hamid ORCID: 0000-0002-2516-6619 , Bradley, Michael S.A. and García-Triñanes, Pablo ORCID: 0000-0002-4993-2250 (2022) Study of the evolution of drying-induced flow properties for pulverised cassava grits. Journal of Food Engineering, 338:111221. ISSN 0260-8774 (doi:https://doi.org/10.1016/j.jfoodeng.2022.111221)

cassava; pneumatic dryer; flash dryer

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Impact of the feeding system on pneumatic dryers’ energy performance. Manual. University of Greenwich, London.

cassva press

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Hand winch press for cassava dewatering. [Video]

convection dryer; pneumatic dryer; flash dryer; fixed-bed dryer; flatbed dryer; energy efficiency; product quality; costs

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Komlaga, Gregory Afra, Chapuis, Arnaud and Müller, Joachim (2020) Comparative study between current practices on cassava drying by small-size enterprises in Africa. Applied Sciences, 10 (21):7863. pp. 1-17. ISSN 2076-3417 (Online) (doi:https://doi.org/10.3390/app10217863)

cyclone

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Solar-powered multipurpose hammermill (Part 2). [Working Paper]

dewateiring

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) Cassava dewatering machine. [Video] (Unpublished)

dewatering

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Measuring pressure during cassava dewatering with a lifting bag. Manual. Natural Resources Insitute, University of Greenwich, London, University of Greenwich.

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Winch operated cassava press. [Working Paper]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Komlaga, Gregory (2020) Innovative equipment for cassava dewatering. Technical Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

dewatering; cassava

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Low-drudgery novel press for cassava dewatering. Manual. Natural Resources Insitute, University of Greenwich, London, University of Greenwich.

dewatering; pressing; cassava

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Roller press construction guide. Manual. CGIAR Research Program on Roots, Tubers and Bananas, London, University of Greenwich.

drying

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Flatbed dryer stirrer. [Working Paper]

feeding system

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) Feeding system for cassava pneumatic drying - Part 3. [Video] (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Feeding system for cassava pneumatic drying - Part 1. [Video]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Feeding system for cassava pneumatic drying - Part 2. [Video]

fish feed; extruder; pellet

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2022) Pellet machine construction guide. Manual. Natural Resources Institute, University of Greenwich, London.

flash dryer

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) Using multiphysics to properly dimension pneumatic dryers. [Video] (Unpublished)

flatbed dryer

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Upgrading the flatbed dryer with a solar-powered system for Tanzanian smallholders - Part 1. [Video]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Upgrading the flatbed dryer with a solar-powered system for Tanzanian smallholders - Part 4. [Video]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Upgrading the flatbed dryer with a solar-powered system for Tanzanian smallholders - Part 5. [Video]

flatbed dryers

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Upgrading the flatbed dryer with a solar-powered system for Tanzanian smallholders - Part 2. [Video]

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Upgrading the flatbed dryer with a solar-powered system for Tanzanian smallholders - Part 3. [Video]

flour; starch; sorption isotherm; thermodynamic properties; drying efficiency

Sarnavi, Hamed J, Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , García-Triñanes, Pablo ORCID: 0000-0002-4993-2250 , Chapuis, Arnaud, Tran, Thierry, Bradley, Michael SA and Müller, Joaquin (2022) Determining the heat of desorption for cassava products based on data measured by an automated gravimetric moisture sorption system. Journal of the Science of Food and Agriculture, 103 (1). pp. 389-399. ISSN 0022-5142 (Print), 1097-0010 (Online) (doi:https://doi.org/10.1002/jsfa.12153)

gari roasting

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2023) Using multiphysics to simulate gari roasting process. [Video] (Unpublished)

hammermill

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Solar-powered multipurpose hammermill. [Video]

heat exchanger

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Solar-assisted heating unit (part 1). [Working Paper]

mill; DEM

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Solar-powered multipurpose hammermill (Part 1). [Working Paper]

on-farm; fish feed production

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2022) Multipurpose hammermill: construction guide. Manual. Natural Resources Institute, University of Greenwich, London, University of Greenwich.

pneumatic dryer

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Construction guide of a small-scale pneumatic dryer to process cassava. Manual. CGIAR Research Program on Roots, Tubers and Bananas, London, University of Greenwich.

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Komlaga, Gregory (2020) Improved energy performance of small-scale pneumatic dryers used for cassava processing. Technical Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Capacity building on dimensioning, designing, building and operating small-scale pneumatic dryers. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2018) Training Course Report: determining energy efficiency of dryers. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

pneumatic dryers

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Komlaga, Gregory (2020) Energy performance of a pneumatic dryer and of a flatbed dryer used for small-scale cassava processing. Technical Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

rural development

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) The role of an engineer in rural development. In: GREat talks at Medway, 6 October 2021, University of Greenwich, P129, Wardroom, P129, Wardroom. (Unpublished)

screw feeder

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Feeding system for cassava pneumatic drying. Manual. Natural Resources Insitute, University of Greenwich, London, University of Greenwich.

screw feeder; plough feeder

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) A novel feeding system for pneumatic drying of cassava. Manual. Natural Resources Insitute, University of Greenwich, London, University of Greenwich.

small-scale farming; food systems; innovation systems; research; crop production; case studies; pequeñas explotaciones; sistemas alimentarios; sistemas de innovación; investigación

Tran, Thierry, Abass, Adebayo, Taborda Andrade, Luis Alejandro, Chapuis, Arnaud, Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Adinsi, Laurent, Bouniol, Alexandre and Ojide, Makuachukwu (2022) Cost-effective cassava processing: case study of small-scale flash dryer reengineering. In: Thiele, Graham, Friedmann, Michael, Campos, Hugo and Polar, Vivian, (eds.) Root, Tuber and Banana Food System Innovations: Value Creation for Inclusive Outcomes. Springer, Cham, pp. 105-144. ISBN 978-3030920210; 978-3030920227 (doi:https://doi.org/10.1007/978-3-030-92022-7_4)

solar heating

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Solar-assisted heating unit (part 2). [Working Paper]

solar panels; photovoltaics; postharvest tecnologies

Amjad, Waseem, Akram, Fatima, Parmar, Aditya ORCID: 0000-0002-2662-1900 , Precoppe, Marcelo ORCID: 0000-0002-7937-5782 , Munir, Anjum, Asghar, Furqan and Mahmood, Faisal (2023) Decentralised solar-powered cooling systems for fresh fruits and vegetables to reduce postharvest losses in developing regions: a review. Clean Energy, 7 (3). pp. 635-653. ISSN 2515-4230 (Print), 2515-396X (Online) (doi:https://doi.org/10.1093/ce/zkad015)

solar-powered; water heater; radiator; energy storage

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Labe, Benedict Iorzer (2024) Solar-powered dryer for prolonged rainy season. Manual. University of Greenwich, London.

sweet potato

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 and Rees, Debbie (2020) Environmentally-controlled sweetpotato storage unit. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2020) Evaporative cooling and air conditioner cooling: maintenance, improvements and data collection. Project Report. Natural Resources Insitute, University of Greenwich, London, University of Greenwich. (Unpublished)

water heating

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) solar heater. Manual. Natural Resources Insitute, University of Greenwich, London, University of Greenwich.