In the environment of energy conservation and emission reduction, air-energy heat pump technology is being used more and more widely to meet the special needs of industrial and agricultural production. Compared with popular products such as air-conditioning, hot water, and heating, due to the specific use of the field The specificity of nature and function, these extended products of the air energy heat pump are also called special heat pumps. As early as 2002, Finonics and other professional heat pump companies began to carry out special heat pump research and development and promotion. In recent years, with the constant maturation of constant temperature, high temperature and low temperature heat pump technology, the application of special heat pumps has apparently increased. On the one hand, because of the increasingly fierce competition in the industry, some of the existing SMEs and new entrants have difficulty gaining opportunities in the relatively mature hot water market. Therefore, some manufacturers began to look for new areas as their own blue ocean, Bo Companies such as Lang, Zhengxu, Kechuangda, and New Era have joined the ranks of the special heat pump industry; on the other hand, with the deepening of energy-saving and emission-reduction policies, the original use of fuel, coal-fired power and high energy consumption, high pollution The use of industrial and agricultural production equipment is severely restricted or even prohibited from use. There is an urgent need for an environmentally friendly and efficient alternative equipment to meet a variety of special needs. Air energy heat pump drying equipment has significant advantages in energy saving, and its energy consumption is only ordinary electricity. One-fourth to one-third of the energy consumption of boilers and oil-fired boilers is of great significance in energy-saving transformation.

From the technical characteristics, special heat pumps can be categorized into two categories: constant-temperature heat pumps and high-temperature heat pumps. The pool heat pumps and drying heat pumps corresponding to them are the most common and mature in practical applications.

Heated pool heat pump: rapid market growth technology to be upgraded In daily life and industrial and agricultural production, there are many areas requiring constant temperature technology, such as indoor swimming pools in urban life, laboratories, file storage rooms, libraries, plastic greenhouses for vegetable cultivation and Aquaculture, poultry hatching, etc. all require the indoor to maintain a stable ambient temperature and humidity. Among the constant temperature products, pool heat pumps are the most common and typical, and are currently the most common area for heat pump extension applications. Most companies that do business machines have pool equipment.

The constant temperature swimming pool, also called the indoor constant temperature swimming pool; The water temperature of the swimming pool is always stable at 26-28 degrees, which is suitable for the body's temperature, regardless of summer or winter. With the improvement of people's living standards, recreational swimming pools are becoming more and more common in various clubs in the city, bringing business opportunities to air-powered swimming pool equipment.

The current pool heating equipment is mainly three types of boilers, solar energy and heat pumps, of which the boiler has the largest share. According to the heat source, the boilers are divided into coal-fired, oil-fired, gas-fired, and electric boilers. However, these methods must be affected by the energy crisis. At the same time, the use of coal-fired, oil-fired, and gas-fired boilers will also cause environmental pollution. Therefore, boilers No matter whether the system is energy-saving or environment-friendly, there are exhaust emissions and energy consumption. The use of solar energy combined with an auxiliary heat source achieves constant heating, energy saving and environmental protection of the pool water, but this method must be restricted by local weather conditions when it is actually used. In addition, installation of a solar collector requires a relatively large space, and is limited when installed and used. Heat pump technology is a new energy technology that has attracted much attention all over the world in recent years. Compared with traditional heating methods, heat pumps can not only absorb heat from the air, but also absorb solar energy, making full use of inexpensive natural energy and are an alternative. Boiler heating equipment and hot water equipment, so the use of heat pump to heat the pool water is regarded as the ideal way to achieve the pool water temperature.

Pool heat pump is also called pool constant temperature dehumidification heat pump equipment and is mainly used for indoor swimming pool heating. The working principle is to recycle the heat loss from evaporation on the surface of the pool water and transfer it to the pool water and air to meet the heat required for the pool water and air insulation. It is an efficient system that includes: heating the pool, purifying the pool water, and treating the air in the pool room. The heat source of a heated pool heat pump can be air, water, or geothermal heat, with air sources being the most common. Heat pump for swimming pool heating has been relatively mature in foreign countries, but it is not very mature in the use of domestic swimming pools. Although there are many domestic manufacturers are also doing the pump heat pump products, many are just general commercial heat pumps. According to industry insiders, simple swimming pool heating is similar to the principle of ordinary air conditioning, but the heat exchanger is different, so the threshold is relatively low, many companies can do. Although these products can heat the pool water, strictly speaking, they cannot meet the technical requirements of the heated swimming pool. The relevant person in charge of Midea's air energy products said that the newly promoted private pool heat pump of the United States is mainly the use of a titanium tube heat exchanger, and the cost is relatively high. Last year, the pool did dozens of projects and performed well. The biggest challenge of constant-temperature heat pump is the constant temperature dehumidification. Air-conditioning companies that generally have heat recovery technology and water source technology have this strength, but it is difficult for pure air energy companies to have both functions. Currently there are fen used in this technology. Nicks, Guangdong stars and so on. Most of them are ordinary commercial machines and are generally applicable to ordinary small and medium-sized fitness establishments and outdoor water projects.

Finonics is the first company in the industry to develop thermostatic swimming pool heat pump equipment, and its technology is mature. According to the introduction of the company's chief engineer, the Neptune professional pool constant temperature dehumidifier has been introduced for nearly three years. The application of the system is subdivided into: sauna, Swimming pools, club swimming pools, bathing centers, villa pools, hotel swimming pools and other series are the largest professional exporters of swimming pool heat pumps in China, with a market share of more than 30% in the European market. However, there are not many applications in the country, because the total number of indoor high-end projects in China is still low, while the general outdoor swimming pool is heated, and ordinary heat pump commercial machines can be used.

Bolang has made remarkable achievements in swimming pool projects this year. It has continuously obtained large-scale swimming pool heat pump heating in Wangzhou Scenic Area Wave Experience Center in Chenzhou, Hunan, the largest wave constant temperature water city project in Wuhu, Anhui Province, the swimming pool project in Loudi Sports Center in Hunan, and the world in Lake Wupu. The constant temperature project is currently taking more outdoor projects. According to Wang Jiping, the chief technical officer, the company will develop triple supply products in the future. Although at present, from the absolute number of items, there are not many projects for domestic use of pool heat pumps at present, but the development rate is very fast. With the continuous improvement of energy saving and emission reduction requirements of the country, energy saving will be realized in new swimming pools and existing boiler projects in the future. During the renovation, the air energy pool heat pump will be more popular.

Drying heat pump: The application of high temperature boosting is widely used outside the swimming pool heat pump. Drying heat pump is another special product with wide application.

Drying is an indispensable processing procedure in many industrial production and processing of agricultural and sideline products. Compared with the existing drying equipment, the air source heat pump drying equipment first has low energy consumption, its operating cost is 1/4 of the general electric heating, is 1/3 of the fuel cost, for the production enterprises, energy saving Bring both cost and environmental protection. Heat pump drying equipment, also called heat pump dryer, consists of a compressor-heat exchanger (inner machine)-throttle-absorber (external machine) and other devices to form a circulatory system. The refrigerant in the compressor completes the gaseous boost pressure and then enters the internal machine to release high-temperature heat to heat the air in the drying room. At the same time, it is cooled and transformed into a liquid state. This way, the heat is continuously transferred to the refrigerant circulation source. Drying room heating room air temperature.

Air-energy heat pump drying was first used mainly for wood drying, and wood drying is one of the more successful applications of heat pump drying technology. Although the use of heat pump technology to dry wood is more time consuming than conventional air drying, significant energy savings and high wood utilization make heat pump drying one of the main methods for wood drying, especially for those with high commercial value and drying. Difficult “hard-to-dry wood” has also accumulated a lot of practical experience. In actual operation, it has been extended to food processing, tea drying, tobacco drying, vegetable dehydration, fish drying, ceramic baking, pharmaceutical and biological products. Sterilization and drying, sludge treatment, chemical raw materials and fertilizer drying and many other fields.

In the food processing industry, besides energy saving and consumption reduction, the biggest significance of air heat pump drying is quality optimization. Because of the high degree of automation of air energy heat pump equipment and the precise control of temperature and humidity, such as food drying, heat pump drying is a gentle drying method that approaches natural drying. The evaporation rate of surface moisture is relatively close to the internal moisture migration rate to the surface. The inherent quality of the dried product is stable, the color is good, and the product grade is high. Moreover, the drying time is short. For example, the process of drying dehydrated vegetables requires at least 24 hours for each ton of vegetables processed by traditional equipment. Sometimes reheating and reheating occur due to poor drying, and the time required for heat pump drying is generally low. For 4 - 8 hours.

In the field of industrial processing other than food processing, drying is the focus of high-temperature hot water. At present, boilers are generally used as the heat source. In recent years, the constant breakthrough of high-temperature heat pump technology is that air-to-energy heat pumps are increasingly becoming an important alternative equipment in this field. High temperature is becoming a hot word in the current air energy industry, accelerating the development of air energy special heat pumps.

High-temperature air heat pump does not have a clear and authoritative definition. Usually, it means that the heat pump heating temperature can reach 65°C without changing the operating environment of the equipment, and maintain high operating efficiency and stable operation. The current high-temperature heat pump equipment generally uses Copeland hermetic scroll compressors for product design; in addition, in order to ensure that high-temperature heat pump equipment operates under stable allowable working pressure, refrigerants with high temperature characteristics such as r417 and r410 are used. For the working fluid. Such as Finnicks Group exhibited "85 °C high temperature heat pump hot water + new vertical wind disk", the prototype of the test has completely met the requirements of a special industry engineering, successful preparation of 0 °C cold water and 85 °C hot water . Experts from the Finonics Group's new energy research and development center said that the special heat pump will be widely used in food processing, dairy products, beer and beverage, agricultural planting, catering, petroleum and petrochemical industries. A small number of companies in the industry have already begun to try to introduce co2 refrigerant products. The maximum water temperature reaches 95 degrees. Under the same working conditions, it saves 85% of electricity compared with similar products. At present, drying is the main application field of high-temperature heat pump technology. The main high-temperature drying equipment on the market are: Finonics' high-temperature heat pump hot water unit, Zhengxu high-temperature heat pump unit, Dongguan Keyang high-temperature heat pump drying equipment, Guangzhou Kailun high-temperature heat pump, etc. : Electroplating, leather and other petrochemical industries and environmental protection industries such as waste disposal.

In the electroplating, leather processing and other industrial processing areas, the use of high-temperature air heat pump drying system equipment can achieve system operation, energy saving, safety upgrades, while improving production and living conditions. At present, in the electroplating industry, due to the particularity of the production process, pre-treatments such as electroplating nickel and chromium all need to maintain hot water at 50°C to 80°C, and now small factories use electric heating directly; medium-sized plants generally use oil-fired boilers for heating; Steam heating is commonly used in factories. After electroplating the parts are dried using electric drying oven, fuel drying line or steam drying line. Electroplating bath syrup generally with acid or with alkali, the temperature requirement is 70-80 °C, energy consumption, only the heating of the electroplating solution and the cost of cleaning the parts of the liquid electroplating factory costs: 20% -30%. The water temperature is not stable, nor is it safe and environmentally friendly. The equipment used by the air energy heat pump in the electroplating industry is generally a high temperature heat pump hot water unit with a temperature of 85 degrees or more. The system has a high degree of self-enhancement. It does not require on-site operation, supporting all production processes, has low operating costs, and improves production safety. . In addition, the user can use the high-temperature heat pump water heater to make hot water, and can also make full use of the cold air discharged by the host (about 25° C.) to improve the ambient temperature of the workshop and office.

Conclusion: With the deepening of energy-saving policies, continuous progress in technological innovation, and general improvement in the socio-economic standard of living, air-to-energy heat pumps are becoming special and increasingly widely applied to all aspects of life and production. Bring revolutionary changes to our lives.