Enterprise Europe Network

Spanish researchers developed a highly efficient solar dryer for industrial materials and foods

Country of origin:
Country: 
SPAIN
Opportunity:
External Id: 
TOES20200319001
Published
04/05/2020
Last update
11/05/2020
Expiration date
12/05/2021

Keywords

Partner keyword: 
Solar/Thermal energy
Food Technology
Solar/Thermal energy
Other research and experimental development on natural sciences and engineering
Tertiary education
EXPRESS YOUR INTEREST

Summary

Summary: 
A Spanish university has developed a solar dryer for drying foods, materials or other industrial products. It is subjected to air or another gas under pressure for the purpose of increasing energy efficiency by means of using a turbocompressor, being able to work in an open or closed circuit. It does not require supplying external energy, except that obtained from solar capture, and eliminates the use of liquids, making it easier to handle and operate. Looking for financial and licence agreement

Description

Description: 

A Spanish research group from a public university has developed a solar dryer using air or another gas under pressure for drying industrial products and food products of any type.
Among the main highlights of this technology are its higher solar collection output and its autonomy to work without other external energy supply than solar collection.
This new solar dryer uses a gas (preferably air) under pressure, comprising two areas, a high-pressure area and a low-pressure area. The high-pressure area must be leak-tight. Furthermore, if air is used, the possible leaks will not present any environmental issues. This increase in pressure makes evaporation somewhat difficult, but solar collection output is in turn improved, so a smaller solar collection surface area is required.
In addition, when the drying space is located in the high-pressure area, access to the materials requires certain guidelines to conserve said pressure, and if it is located in the low-pressure area, the operator can more readily access such materials.
Finally, the gas circulation system can be set up as an open circuit or as a closed circuit, where a closed circuit is particularly indicated when a gas other than air is used.
Nowadays, solar dryers are used in many industrial sectors, such as, chemical, pharmaceutical and food industry. The developed solar dryer has significant improvements comparing to the current solutions. It’s main features are:
• A higher solar collection output, and therefore a smaller solar collection surface area is required.
• It can work without any external energy supply (except from solar collection), although there should be some as supporting energy in non-optimal situations.
• If the system receives sufficient solar collection and pressure losses are moderate, no other external energy supply is required.
• Able to work as an open circuit or as a closed circuit
The researchers are looking for undertakings that produce chemicals, powder or granular materials, construction materials or handcrafted items for financial and license agreement. They are willing to build and design the prototype for further testing, validation and industrial development.

Advantages & innovations

Cooperation plus value: 
Innovative aspects: - Dryer with solar collection. - Subjected to air or another gas under pressure with forced circulation. - Work recovery to feed back into the entire system. Advantages: - It provides higher solar collection output. - It requires less solar collection surface area. - It can use air or another gas under pressure with forced circulation. - It can work without any external energy supply (except from solar collection). - It can be set up as an open circuit or as a closed circuit

Stage of development

Cooperation stage dev stage: 
Under development/lab tested

Partner sought

Cooperation area: 
- Type of partner sought: Undertakings that produce chemicals, powder or granular materials, construction materials or handcrafted items. - Specific area of activity of the partner: Drying foods, medicinal products, materials or any other product. - Task to be performed: Prototype design and construction. Testing, validation, industrial development and marketing strategy. -Financial and license agreement

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Three possible forms of the developed Solar dryer, with all its parts