We manufacture Dryers of for Spices, Crops, Vegetables and Other Food Products. Our dryers are advanced and highly economical. They provide higher quality output, while using much less energy than current drying technologies. The various types of dryers manufactured by us are :-
Our heat exchangers designed & manufactured in-house. We also offer heat exchangers for all industrial applications too. The fuel used could be Gasolene, Diesel, Kerosene, Furnace Oil, LPG, Biogas and Producer Gas etc, depending on customer's preference. The models offered are :-
In today's scenario, with the ever rising cost of fuels, many users are seeking alternative energy equipments to reduce operating cost. To cater to that segment, we manufacture a sophisticated, state of the art firing device called "Combustors".
All types of bio-mass fuels like briquettes, pellets and even untreated country firewood ca be fired to generate hot air. It is best suitable for small scale, low temperature applications.
Solar radiation use for drying is one of the oldest applications of solar energy. It was used since the dawn of mankind mainly for food preservation but also for drying other useful materials as cloths, construction materials, etc. The first installation for drying by solar energy was found in South France and is dated at about 8000 BC. Solar heat was the only available energy source to mankind until the discovery and use of wood and biomass. Until to day in remote small communities, not only in the so-called third world regions, but also in the western countries, people take advantage of solar radiation to dry and preserve small amounts of food.
Solar drying has not yet widely commercialized. Solar dryers are equipment, generally of small capacity and based rather on empirical and semi-empirical data than in theoretical designs. The majority of the numerous solar dryer designs, which are available, are used mainly for drying of various crops either for family use or for small-scale industrial production.
In this chapter on Solar Drying various direct and indirect solar drying applications and some of the numerous solar dryers are described. A very short historical description of solar drying through the centuries is also given. Some drying phenomena, independently of the type of energy used, and the general laws that govern drying methods by convection are shortly analyzed in order the reader to easily follow the details of the solar drying procedure. Special solar collectors used in drying and methods of coupling to the various solar dryers are described as an indirect solar thermal energy source. At the end an example of drying of grapes to produce black current raisins, by indirect solar radiation, is given as well.
Dr. Belessiotis graduated from the Patras University, Greece, Department of Physics with post graduated studies in England awarded by the DEMOKRITOS Center and in Germany awarded by the of Ministry of Research and Technology. He is Ph D. of the School of Mechanical Engineering of the Aristotle University of Thessaloniki, Greece and since 1982 Head of the Laboratory of on Solar and other Energy systems which specializes in Renewable Energy Sources and Energy savings. His specific research interest are: Thermal Engineering, Physical Processes and Metrology of Physical Quantities with application to Renewable Energy Sources and Energy Saving. Development of Methods, Simulation Models and Measurement Procedures for the Measurement and Characterization of Energy (Thermal) Products. Current research activities concern: (A) Thermal Solar Energy: Experimental and theoretical investigation of arrangements and systems for the exploitation of thermal solar energy, focusing at: (a) new types of solar collectors (e.g. heat pipe, vacuum tube of Dewar type, concentrating, etc.) with water, air or two-phase fluid as a working medium, presenting high performance and reliability in specific applications, (b) the development of autonomous or hybrid systems for the production of heat or cold or heat and desalted water, etc. (c) the development or optimization of methods for the thermal-hydraulic characterization of large scale thermal solar applications, as well as development of models for the simulation and design of such systems. (B) Thermal Storage Systems: Experimental and theoretical investigation of the thermal-hydraulic behavior of underground or in-ground heat or cold storage tanks, of metallic or non-metallic (e.g. cement) of various geometries shell, with water or phase change materials as working medium. (C) Solar Assisted Drying Processes: Investigation of the behavior of mechanical driers of hot air and optimization through the analysis of heat and mass transfer phenomena, experimental investigation of the optimum drying conditions, design and development of hybrid as regards energy source systems and development of simulation models for the drying processes. Scientific responsible in many competitive research programs, funded by external sources (total funding exceeds 5mi.), three books (two writers), six prototype scientific publications to International Specialized Encyclopedias (ENCYCLOPEDIA OF LIFE SUPPORT SYSTEMS and ENCYCLOPEDIA OF ENERGY), more than 200 publications in international journals, international and national conferences, as well as specialized studies Scientific Work: Scientific responsible in many competitive research programs, funded by external sources (total funding exceeds 5mi.), three books (two writers), six prototype scientific publications to International Specialized Encyclopedias (ENCYCLOPEDIA OF LIFE SUPPORT SYSTEMS and ENCYCLOPEDIA OF ENERGY), more than 200 publications in international journals, international and national conferences, as well as specialized studies.
Euridice-Emma Delyannis, Dr.-Ing. Chemical Engineer, Graduated from Technical University Athens. Post-graduate studies at Kansas University, Lawrence, Kansas, USA and at the University of Karlsruhe, Germany. Served as assistant professor at the Department of Chemical Engineering, Technical University, Athens. Scientific Secretary, 20years, and representative of Greece in the European Working Party on Fresh Water from the Sea organizing Congresses on Desalination for the European federation of Chemical Engineers. She published many Proceedings, a book in desalination (in Greek) and students books on chemical engineering and papers on Desalination, especially in Solar desalination. She works also on drying, especially solar drying and is consultant to the Laboratory of Solar and other Energy Systems of the National Center for Scientific Research (NCSR), Demokritos, in Athens, in the field of desalination.
An application of solar dryers in Asian and SSA countries is reviewed.Solar dryers of different types or designs are available, depending on the respective requirements.Solar drying has positive impacts on quality as well as economic, environmental, and social aspects.Financial and technical efforts are required to promote an adoption of solar dryers.
Solar drying is one of the most efficient and cost-effective, renewable, and sustainable technologies to conserve agricultural products in Asian and sub-Saharan African (SSA) countries. This review paper presents the different types of solar dryers that are widely used in Africa and Asia. In addition, the pre-eminent effects of their use on product quality, as well as their economic, environmental, and social impacts, are highlighted. Since financial, external, and structural factors play a key role in the adoption and scaling of solar dryers, this paper also discusses the impact of these factors on the effectiveness of solar drying technologies in selected Asian and SSA countries.
Literature data of different indirect type solar dryers (ITSD) were discussed.ITSD with sensible and latent heat storage system was reviewed.ITSD with roughened solar collector was extensively reviewed.Chemical pre-treatment, payback period and economic analysis were discussed.Important findings and summaries of ITSD were listed and tabulated.
Inadequate preservation techniques and poor storage provisions lead to deterioration in the quality of agricultural products. Advanced processing techniques have been used to reduce postharvest losses of agricultural goods. Drying is a processing technique used for food product preservation. Drying by solar energy is an ancient food preservation technique. Solar dryers of various sizes, capacities and designs are available for drying applications in agricultural industries. Indirect type solar dryer (ITSD) is one of the prominent dryers used to dry food products and this type of dryer with its unique features, types, and different technique incorporated to improve its performance has not been investigated so far in any detail. The purpose of this work is to review the features and benefits of ITSD. A commonly used classification of different types of solar dryers is also presented. Heat transfer enhancement on ITSD and the influence of pre-treatment before drying are also effectively reviewed. Payback period and cost analysis of ITSD are discussed. Important findings on ITSD have been reviewed, discussed and tabulated. The most dominant parameters affecting the drying rate are air temperature and velocity, followed by solar radiation, type of product, initial moisture content and total mass of the product. Passive solar dyers were easy to fabricate compared to active dryers. The drying rate of pre-treated foods was high and the quality of the product remained intact after drying.
Drying is an essential process in the preservation of agricultural crops and in industries, such as textile production, dairy processing, cement production, clay brick production, tile production, wood and timber processing, wastewater treatment, and biomass treatment. The energy requirement for drying can be supplied from various sources, namely, electricity, fossil fuel, natural gas, wood, bark forest residual, and solar. Although the use of solar radiation for drying has existed since antiquity, it has not yet been widely commercialized, particularly in the industrial sector. Considering the rapid depletion of natural fuel resources and because of the rising fossil fuel cost, solar drying is expected to become indispensable in the future. Moreover, environmental considerations and damages caused by human beings due to increasing consumption of fossil fuel prompt governments and industries to use renewable energies as a clean and sustainable resource, thus, the use of solar energy for drying. The numerous solar drying applications are classified into two main categories, that is, agricultural and industrial. Many benefits could be exploited from solar energy for drying applications. Solar energy enables the industries and agricultural sectors to modify their energy requirement, improve their energy stability, and increase energy sustainability, which lead to improvement in the system efficiency. We review the role of the drying system in industry and agriculture, the energy consumption capacity, and the availability of the required energy for the products to be dried. In addition, the economical, environmental, and political aspects of using solar dryers are discussed. Special attention is given to industrial drying and in finding opportunities to use compatible dryers for a certain industry. In short, we conduct a comprehensive review of the new approach to use solar energy in industrial drying sector.