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Understanding the advantages and disadvantages of industrial heat dryer will make it easier for you to make a decision whether to choose a heat or cold dryer or a sublimation dryer. Let’s explore with SUNSAY in the article below.
MỤC LỤC
What is a heat dryer? Working principle of heat dryer
Concept
Heat dryer is a type of machine that dries raw materials by using high temperature to evaporate the water in the product. The temperature range is usually from 30-100 degrees Celsius. The characteristic of this drying method is that the higher the temperature, the faster the water evaporates.
Heat dryer is a type of machine that dries raw materials by using high temperature to evaporate the water in the product
Heat dryer is a type of machine that dries raw materials by using high temperature to evaporate the water in the product
Heat drying is quite popular on the market today, can dry a variety of products such as vegetables, agricultural products, medicinal herbs …
Working principle
Industrial heat dryer use continuously blowing hot heat to evaporate the water in the product. The machine uses hot air to radiate to the outside because the air flow can carry a lot of moisture.
This hot air is generated by mini fan blades and passes through the filaments causing them to heat up. After drying the food inside the cavity, continue to carry the steam that rises from the food out and this cycle repeats continuously.
Most hot dryers have the same humidity inside the drying chamber as the outside air. The air inlet system from the outside will push out the steam inside the drying chamber. Therefore, the drier the ambient air, the faster the product will be dried, and the higher the temperature, the higher the dryness.
Pros and cons of heat dryers
Please follow the pros and cons analysis below to better understand the heat drying method:
Advantages
To meet the needs of various types of drying:
Commonly dried products that do not require high requirements in terms of shape, color and nutrition such as dried bamboo shoots, cassava, dried vegetables, fish, and cereal grains can all be used with a heat dryer.
Thermal dryers meet the needs of various types of drying
Thermal dryers meet the needs of various types of drying
Low price:
The price of the machine is relatively cheap, about 2-3 times when compared to other dryers in the same volume, suitable for most businesses and processing facilities from small to large.
Simple machine structure:
The dryer design is simple, so it is easy to operate, maintain and repair.
Industrial heat dryer can dry a variety of foods
Defect
Failed to dry high value products:
Because it is dried at a high temperature range of 40-100 degrees Celsius, bringing with it a continuous flow of hot air, it causes food to change color, especially the internal structure is easily changed, flattened, and shrink.
With some drying ingredients:
Salanganes’Nest, medicinal herbs, the heat dryer can not meet well. In addition, thermal dryers are difficult to dry powdered materials, thus limiting the research and application capabilities of many businesses.
Low capacity:
Most of the thermal dryers on the market can only meet drying batches of less than 500kg/time, so many processing facilities with large drying needs often have to buy many machines, split drying batches, which takes a lot of time. effort and space consuming.
Compare heat dryers with industrial refrigeration dryers
Refrigeration dryers are more advanced than thermal dryers. Food drying machine by very dry air flow and at low temperature (10-80 degrees Celsius), so it is often used for high-value products and easy to change properties when encountering high temperatures such as: : medicinal herbs, turmeric starch, bird’s nest, …
| Comparative content | Heat dryer | Freeze dryer |
| Working principle | Generate hot air by convection and thermal blower. Has an intelligent electronic control system, making it easier for users to install and observe parameters | The structure is more complicated including outdoor unit, auxiliary heating element, circulating fan to bring air to the indoor unit to do the dehumidification task. |
| Parameter | Drying at temperatures above 40-100 degrees Celsius, the higher the product drying temperature is, the faster the water evaporates. | Dry the product at a low temperature range of 10-80 degrees Celsius, the humidity is < 5%, and the humidity is uniform. |
| Drying range | Heat drying is used to dry common products that do not require high shape, color, or taste: potatoes, cassava, bamboo shoots, dried fish, etc. | Often used for more advanced products, which require the finished product to keep its color, smell, taste, and not change its nutritional properties or shape such as: medicinal herbs, turmeric, cordyceps, mushrooms, etc. |
| Price | Low cost, suitable for most small-scale processing establishments | The price is 2-3 times higher than the heat dryer (same volume). |
Each type of dryer will have its own advantages and disadvantages. The best dryer is the one that fits your business needs. If the business wants to save costs, the requirements for finished products are not high, the industrial heat dryer is the best choice. For businesses that want to invest in improving the quality of finished products, increasing their competitive advantage and optimizing operating costs, a refrigerated dryer is suitable.
SUNSAY cold and heat dryer was born, bringing outstanding technology solutions to the dried food production and processing industry. Promote the advantages and overcome the limitations of current conventional thermal dryers such as:
- Energy saving
- Shorten drying time
- Simplify the drying process
- Diversified capacity, especially reasonable price for businesses and processing facilities to choose
Contact method to order dryer SUNSAY
In addition to refrigeration dryers, SUNSAY Vietnam also provides other types of dryers such as: sublimation dryers, heat dryers, rice dryers, and horizontal dryers,…
Please contact Hotline (Zalo): +84 935.995.035 or call center +84 941.108.888 or leave information in the form and we will contact you right away.
