The use of PHNIX heat pump drying tea, not only in the energy savings, while the amount of soluble tannins in the tea is retained, which is conducive to the improvement of tea quality Tea is one of the world's three major beverages, and China is the world's first large country of tea production, tea exports the second largest country. From a domestic point of view, drinking tea has become a habit of most Chinese people, tea has become an indispensable health drink and spiritual drink in social life, and, with the popularization of the concept of healthy consumption, tea is being more and more people accept, love and pursuit. From the point of view of international demand, China's tea exports have been maintaining a steady growth trend.

China's existing tea processing technology content is low, product quality is not high, low value-added products, which leads to a lack of market competitiveness of products, directly affecting the sustainable development of the industry. Drying is an important process in tea processing, using conventional electric heating, coal boiler equipment to dry agricultural products, large investment, need to consume a lot of energy, so that the cost of agricultural products to increase, and cause varying degrees of environmental pollution. The use of heat pump dry tea, can save conventional energy, avoid environmental pollution, improve product quality, change the backward production and processing methods. Therefore, China's application of heat pump drying, development prospects.