For example, most of the current dehydrated vegetable production still adopts the traditional drying method--heating and drying method of the drying room, which has several problems:
Compared with traditional drying technology, who has more advantages?
1. The drying temperature is too high. The traditional drying technology, the drying temperature is not easy to control, the general drying temperature is about 75-90 ° C, and the drying process of dehydrated vegetables requires that the drying temperature should not exceed 65 ° C.
2. The drying time is too long. The traditional drying technology requires at least 24 hours for processing 1 ton of vegetables, and sometimes it takes longer to rework due to poor drying results.
3. Large energy consumption. The traditional drying technology has a low thermal efficiency of about 30%-60%. During the drying process, the heat of dry evaporation moisture accounts for about 36%, and the exhaust gas loss accounts for about 58%. The dry materials take away heat and The heat loss of the dryer is 2% and 2%, respectively, and the thermal efficiency is only 40%.
Second, the characteristics of heat pump drying technology
Compared with traditional drying technology, who has more advantages?
1. The drying temperature is low. The heat pump drying technology production process is about 38-52 °C lower than the traditional drying technology, that is, the heating temperature of the heat pump drying technology is about 37 °C.
2. The drying time is short. Heat pump drying dehydrated vegetable production process, the time required does not exceed 8h, generally from preheating to the product 4h can be completed.
3, the drying quality is good. The vegetables produced by the heat pump drying process have good color and stable internal quality.
4. Low energy consumption. Since the heat pump drying process utilizes air circulation, the heating temperature is low, the drying time is short, and the capacity is large. Therefore, the heat pump drying process consumes less energy and is a very good energy-saving product.
Third, the comparison of economic and technical indicators
Compared with traditional drying technology, who has more advantages?
The economic and technical indicators of heat pump drying technology are significantly higher than traditional drying technology, mainly reflected in energy saving, quality and efficiency.
1. Energy consumption:
(1) Heat pump drying: According to the test, the heater processing 1 ton fresh vegetables consumes 20 kg of standard coal, the heat pump is 2.75 kW, and the circulating fan consumes 0.2 kW. According to the work 4 h, the energy consumption is 11.8 kW, and the standard coal conversion coefficient is 407 g/ (kW•h), standard coal 4.803kg, total energy consumption is 20kg+4.803kg=24.803kg (standard coal);
(2) Traditional drying: 240kg of standard coal is consumed, 2.4kW is consumed by circulating fan, and the standard coal coefficient is 407g/(kW•h), which is equivalent to 0.977kg of standard coal. The total energy consumption is 240+0.977=240.977kg. (standard coal).
The energy efficiency ratio of the two methods is: (1-24.803/240.977) × 100% = 90%.
2, quality: heat pump drying process, product quality is stable, good color, no toxic residues such as sulfur dioxide.
3. Efficiency: The heat pump drying process product is adopted, the moisture content is qualified, there is no rework phenomenon, and the drying time is short.
Daishiba is a professional heat pump manufacturer based in China. With over decades of experience in the HVAC industry, Daishiba has become one of the leading brands of quality heating, cooling & hot water system. Our main products include heat pump, air conditioner & thermal equipments.
Daishiba Heating & Refrigeration Equipment Co. Ltd was founded in 2008 in China and well experience in energy-saving products. We have developed whole series of heating system equipments & energy-saving products with 5 series and more than 200 kinds of products in the past years. Our products range is as below:
Daishiba Heating & Refrigeration Equipment Co. Ltd
● Air to water heat pump.
● Water to water heat pump.
● Water to air heat pump.
● Commercial air conditioner.
● Fan coil units.
Besides Chinese market, export business is our main business. So most of our products are coming with international standard, some of our products have obtained international certificate, such as CE, RoHS, SAA certificate and ERP label etc, and our factory execute strictly. We are always insists on the principle of quality first, customer first, and focus on high-quality, competitive cost & fastest services. So far, our products have entered over 50 countries and regions with either brand name Daishiba or OEM brand.
ISO9001:2008
We are always on the look-out to build strategic partnerships in overseas markets and welcome opportunities where we can work in tandem with you and succeed together. OEM & ODM enquires are welcome.
Looking towards the future, Daishiba will build a fresh and quiet living environment and comfortable life for you.
DAISHIBA HEATING & REFRIGERATION EQUIPMENT CO. LTD
Address: Chuangye Nan Road, Songxia Industrial
Park Songgang Town Nanhai District Foshan Guangdong China (mainland)
Email: sussie@daishiba.com.cn
Website: www.daishiba.com.cn
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