Reason one: the process is environmentally friendly and pollution free
Tea is one of the world's three major beverages, and China is the world's largest tea producer. From the domestic point of view, tea and tea have become a living habit of most Chinese. With the popularization of people's concept of healthy consumption, tea is being accepted, loved and pursued by more and more people. From the perspective of international demand, China's tea exports have also maintained a steady growth trend, the demand for tea has increased year by year, and tea production is bound to face upgrading.
Taking the quality and cost of tea drying as an example, let’s look at the general trend of heat pump drying.
The heat pump drying temperature and humidity can be precisely controlled to ensure the quality and taste of the tea after drying.
The actual process of tea making is the drying process. There are several purposes for drying tea:
The first is to destroy the activity of the enzyme, resist enzymatic oxidation, promote the thermochemical changes of the tea contents, improve the aroma and taste of the tea, and fix the inner quality and shape of the tea;
The second is to reduce the moisture content of tea leaves to the requirements of non-quality change for storage, transportation and storage.
China's existing tea processing technology is low in content, product quality is not high, and the added value of products is low, which leads to the lack of market competitiveness of products, which directly affects the sustainable development of the industry.
Drying is an important process for tea processing. It uses conventional wood burning, coal burning and electric heating methods, which consumes a lot of energy and causes different levels of environmental pollution. The tea leaves are dried by a heat pump dryer, and different drying parameters and drying methods are used in different drying stages of the tea to achieve optimal control of the drying process. Intelligent control of the drying process of tea leaves, through the establishment of a set of control models with high accuracy, good applicability and operability, improve production efficiency, save conventional energy, avoid environmental pollution, and change backward production and processing methods.
Reason 2: Better quality and better quality
In the process of making tea, it is always inseparable from the heat, especially in the drying stage, not only to remove water, but also to evaporate water, while complicated thermochemical changes with water participation occur, further promoting the color and flavor of tea. Formation.
Due to the poor thermal conductivity of the tea leaves and the slow heat transfer, if the temperature is too high, the outer layer of the leaves will dry first, forming a "hard shell" which hinders the internal moisture of the leaves from continuing to diffuse and evaporate. This kind of "dry outer wet" leaves, water vapor is condensed inside the leaves, and the chemical reaction occurs to deteriorate the fragrance and dry the leaves. In the storage of such tea leaves, due to the high actual water content, it is easy to produce aging and mildew.
The leaves with fast water evaporation have less water content and continue to dry at high temperature. When the temperature exceeds a certain range, the old fire smell is generated; if the temperature is too low, the leaf temperature is too low, not only the water evaporation is slow, but also the thermochemical reaction affecting the quality, the tea fragrance Low light, not happy. The heat pump drying temperature and humidity can be precisely controlled to ensure the quality and taste of the tea after drying.
According to the practice comparison test, the tea made by the artificial method has no way compared with the quality of the heat pump drying. The heat pump dried tea has no green taste, astringency and burnt taste, and the high-tech master can make the no-green taste and Charred, but they can't make the fragrance that the dryer made.
The heat pump dried tea is also more resistant to foaming. The reason is that in the traditional tea making process, the active ingredients of the tea taste are released in the air at any time, and the aroma and nutrients of the tea are not emitted to the outside, and the various active ingredients of the tea are lost. Less, this is the master of traditional crafts, no matter how high technology can not do.
Taking the quality and cost of tea drying as an example, let’s look at the general trend of heat pump drying.
For example, the heat pump dryer is applied in the stage of tea drying and drying, and forms high-temperature steam in the drying room. The steam has strong penetrating power to the fresh leaves, so the leaf temperature rises rapidly, and the greening process can be completed quickly, and the obtained green tea product leaves are complete. The aroma is unique and avoids the scorching smell caused by the traditional green tea method.
Reason three: low labor costs and operating costs
In addition to the quality of tea drying, another factor that users value is the cost. In the past, using charcoal or burning wood, fire color and temperature are the key. If masters who have not accumulated experience for a long time are mastering it, it is extremely difficult to produce high-quality tea, but this kind of master salary is very high.
Electrothermal drying, although temperature regulation is much easier, but the output is low, the cost of electricity is high, and the machine control components are unreliable, which easily causes drying failure. Heat pump drying As long as the tea leaves are put into the drying room, the door is turned on, and the parameters can be adjusted according to the temperature and humidity of different stages. The drying process does not need to be turned over, and the finished product is opened, which saves a lot of labor costs.
In terms of operating costs, heat pump drying also has great advantages. According to the dealer's experience, heat pump drying can save about 32% of energy per ton of tea compared to traditional coal burning or electric heating. Xiao Yingzhang also shared in detail the comparison data of drying with heat pump and electric heating. He used a dryer with a rated power of 6000 watts to dry 1000 kilograms of tea at a time, using about 7.5 degrees per hour, and if the same amount of tea is used. For drying, multiple electric drying equipment is required, and the total power consumption per hour reaches 30 degrees or more, far exceeding the heat pump dryer.
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Material drying quantity and basic properties are the basis of system design
The main body of the heat pump drying is the material, so the understanding of this subject must be detailed. The material name, volume, picture, daily average output, maximum and minimum output are the important basis for the construction of the post-drying house. The size of the drying room and the material rack The choice of the design and the design of the air duct are all based on these data. If you only know the average daily output, follow the data to design the drying room, but when the drying demand is the maximum daily output, then the drying room can not meet the customer's daily drying demand, only by increasing the drying The number of times to solve, then this will bring losses to customers.
Wet material weight, dry material weight, dry-wet ratio, etc. are necessary factors for host selection and system design. Only by knowing these data can we calculate the amount of dewatering for drying, so that we can give me scientific and reasonable results. The solution is to improve the drying quality and reduce the running cost. Sometimes the customer will provide this information, but in many cases, the customer needs to test or consult an experienced industry person.
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Drying process requirements are the guarantee of finished product quality
Drying room construction and system design and installation are the basis of heat pump drying, and the key lies in the drying process, because many of the drying materials themselves have greater value, such as Chinese herbal medicines, wood, etc. The failure to cause drying has not only caused huge losses to customers, but even caused you to suffer heavy losses.
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.
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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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