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Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi

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Application : Zhejiang Sanwei Electrical Appliance Co., Ltd. is located in Ningbo, a port city with beautiful scenery and developed transportation. It is a specialized cold and heating equipment enterprise integrating R&D, production, sales and service. Since its establishment, the company has been pioneering, innovative and enterprising. It has established cooperative relations with many domestic research institutes, continuously introduced advanced frontier technology and production tec...


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Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi Detail:

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Zhejiang Sanwei Electrical Appliance Co., Ltd. is located in Ningbo, a port city with beautiful scenery and developed transportation. It is a specialized cold and heating equipment enterprise integrating R&D, production, sales and service. Since its establishment, the company has been pioneering, innovative and enterprising. It has established cooperative relations with many domestic research institutes, continuously introduced advanced frontier technology and production technology, relying on its senior R&D. Team and many years of manufacturing experience, the products developed are efficient, energy-saving, stable and reliable, easy to maintain, adaptable, and well received by the majority of users.
Sanwei Company upholds the enterprise spirit of “honesty, win-win, gratitude and dedication”, takes creating value for customers as its mission, cooperates sincerely with people with lofty ideals from all walks of life to seek common development, and contributes to building a new type of society with high efficiency, energy saving and sustainable development.
Material drying covers a wide range of fields which are closely related to our industry, agricultural production and daily life. It plays an indispensable role in the industrial fields which have an important impact on the development of national economy, such as chemical industry, petrochemical industry, medicine, food, timber, agriculture and so on. Drying technology is an indispensable processing procedure in industrial and agricultural production. Material drying is a high energy consumption operation. Authoritative information shows that the energy used in drying accounts for about 15% of the total energy consumption of the national economy, and the market demand is large.
At present, steam drying equipment is widely used as heat source in domestic processing and production. Furnace gas and direct-fired flue gas drying equipment are widely used in small enterprises. Steam drying equipment is mainly filtered, which is limited by the current technology in China. The average thermal efficiency of industrial boilers in China is about 60%. At the same time, steam drying equipment will lose up to 40% steam heat energy in the process of entering and exhausting. At the same time, there are many factors causing heat loss. These factors combined have a great impact on the thermal efficiency of steam drying equipment. As a result, the primary energy utilization rate of steam drying equipment is generally below 30%. This kind of excessive energy consumption makes the cost of drying rise substantially. At the same time, due to the insufficient use of energy, a lot of smoke and exhaust gas are produced, which causes serious pollution to the atmosphere. The exhaust gases produced mainly include CO2 and NO2 gases, which aggravate the greenhouse effect and are also the main factors for acid rain to form and destroy the ozone layer.
Material drying process is a huge energy-consuming process. According to statistics, in most developed countries, the energy used for drying accounts for 7-15% of the total national energy consumption, while the thermal efficiency is only 25-50%. And most drying processes, especially for heat-sensitive materials (such as food and biological materials), will have an impact on their color, nutrition, flavor and organization. Heat pump drying technology has the advantages of less energy consumption, less environmental pollution, high drying quality and wide application range. Its excellent energy-saving effect has been proved by various experimental studies at home and abroad.
In the 12th Five-Year Plan for Industrial Energy Conservation issued by the State, it is clearly required that the industrial boiler kiln should be reformed in energy-saving technology in view of the problems of low level of automatic control, low average load and outdated equipment. The State Council’s Action Plan for the Prevention and Control of Atmospheric Pollution, the first item of Article 10 of the Atmosphere, is to comprehensively renovate coal-fired boilers, which shows that the state attaches great importance to the comprehensive renovation of boilers.
With the advancement of comprehensive renovation of coal-fired boilers, efficient and clean air energy is expected to relieve the urgency of coal-fired and open up new ways of energy development. It is understood that the air energy industry is green, energy-saving, environmental protection, non-combustion of energy, no exhaust emissions, no pollution of the air, not to cause haze disasters, can be fully used in hot water, heating, drying and other fields, is indeed one of the best alternatives to traditional boilers.
Main application fields of drying
Wood industry: plywood, fibreboard pressure forming, mahogany, furniture wood drying.
Bamboo products: bamboo products drying;
Petroleum and chemical industries: polymerization, condensation, distillation, melting, dehydration, forced thermal insulation.
Oil industry: fatty acid distillation, oil decomposition, concentration, esterification, vacuum deodorization.
Synthetic Fiber Industry: Polymerization, Melting, Spinning, Extension, Drying.
Textile printing and dyeing: heat setting, drying, heat capacity dyeing.
Non-woven industry: non-woven fabrics.
Feed industry: drying of raw materials and finished products.
Plastics and rubber industry: hot pressing, calendering, extrusion, vulcanization.
Paper industry: drying, corrugated paper processing.
Building materials: drying of gypsum board, heating of asphalt, maintenance of concrete components.
Machinery Industry: Painting, printing and drying.
Food industry: baking and heating.
Air conditioning industry: industrial plant and civil building heating.
Road construction industry: asphalt melting, heat preservation.
Pharmaceutical industry: raw material drying.
Light industry: the production of ink, laundry powder raw materials drying.
Sludge drying: urban sludge, chemical electroplating sludge, coal sludge drying.
Present Situation of Wood Drying Technology at Home and Abroad
Drying involves a wide range of fields. It is an indispensable basic production link in many industries, such as agricultural products, chemical products, wood products and so on. It is also a major energy consumer in China. The energy used accounts for about 15% of the total energy consumption of the national economy. Because modern people can not live without furniture, and the quality of furniture largely depends on the quality of wood drying, so the wood drying industry has become an indispensable production link.
In addition, wood drying is usually the most energy-consuming process in wood processing enterprises, which accounts for 40-70% of the energy consumption of enterprises. Moreover, most of the wood drying industries in China are small, scattered and backward, and the energy utilization rate is very low and large.
About 30%.
Commonly Used Drying Method of Artificial Wood
Up to now, the common drying methods of artificial wood which have been industrialized include conventional drying, high temperature drying, dehumidification drying, solar drying, vacuum drying, high frequency drying, microwave drying and flue gas drying. Conventional drying refers to the use of atmospheric humid air as drying medium, steam, hot water, furnace gas or hot oil as heat source, indirect heating of air, drying medium temperature below 100 C. High temperature drying refers to the drying medium whose temperature is above 100 C. The drying medium can be either atmospheric superheated steam or wet air, but the majority of them are atmospheric superheated steam. Conventional furnace gas drying and flue gas drying are equipped with a burning furnace burning wood waste (or other fuels) to heat the flue gas generated by combustion. However, flue gas drying is the initial stage of furnace gas drying, generally referring to a drying kiln built by soil method, which directly or indirectly heats the wood with the flue gas generated by fuel combustion. Desiccant drying (also known as heat pump drying) and conventional drying media are the same, are wet air, the difference between the two is the way of air dehumidification. Conventional drying air adopts open cycle, that is to say, a part of hot air with high humidity is discharged regularly from the drying chamber, and at the same time an equal amount of cold air is inhaled from the outside, so the heat loss of ventilation in conventional drying is relatively large. When dehumidifying and drying, the wet air passes through the refrigeration system of the dehumidifier, cooling, dehumidifying, heating and returning to the drying chamber for closed circulation of air. The heat released during dehumidification of wet air is recovered by refrigerant and used to heat air. Therefore, the energy saving effect of dehumidification and drying is obvious. Compared with steam drying, the energy saving rate of dehumidification and drying is generally over 40%.
High frequency and microwave drying are both based on wet wood as dielectric. Under the action of alternating electromagnetic field, water molecules in wood rotate frequently at high speed. Friction between water molecules generates heat, which makes wood heated and dried from inside to outside at the same time. The two drying methods are characterized by fast drying speed, uniform temperature field, small residual stress and good drying quality. The difference between high frequency drying and microwave drying is that the former has lower frequency, longer wavelength, deeper penetration depth, and is suitable for drying thick wood with large cross-section. The frequency of microwave drying is higher than that of high frequency (UHF), but the wavelength is shorter. The drying efficiency of microwave drying is faster than that of high frequency drying, but the penetration depth of wood is lower than that of high frequency drying.
When wood is dried in vacuum, the water vapor pressure difference inside and outside the wood increases, which accelerates the water migration speed inside the wood. Therefore, the drying speed is obviously higher than that of conventional drying. At the same time, because of the low boiling point of water in vacuum, it can achieve higher drying rate, shorter drying period, less drying stress and better drying quality at low drying temperature (such as about 70 C).
Wood solar drying generally uses solar energy to heat air directly, and depends on fan to make air circulate between solar collector and drying room stack. Generally there are two types of greenhouse (heating room) and collector. The former integrates the collector with the drying chamber, while the latter separately arranges the collector and drying chamber. Its capacity is larger than that of greenhouse, and its layout is flexible. Due to the limitation of climate conditions, solar drying is often combined with furnace gas, steam, heat pump and so on.
As the proportion of vacuum, high frequency, microwave and solar drying is less than 3%, this paper mainly introduces the current situation of conventional and dehumidification drying.
Application of Conventional Drying
Among all wood drying methods, conventional steam drying (commonly known as conventional steam drying) with steam as the heat medium has the advantages of stable performance, mature technology, large drying capacity, good drying quality and easy operation. At present, it still dominates the wood drying equipment in the world, accounting for more than 80% in China. Conventional drying with furnace gas as energy source occupies a considerable proportion in small and medium-sized wood factories in non-heating areas of southern China. Because it can deal with wood waste in factories and reduce drying costs, it is welcomed by some factories with little drying capacity. The flue gas drying chamber constructed by soil method is still prevalent in China and some underdeveloped countries where the environmental requirements are not high. Because the price of hot water boilers is much lower than that of steam boilers, there is an upward trend in some factories which do not need high temperature drying and have a small amount of drying. Hot oil is the heat source of conventional drying, which is currently used in a small number at home and abroad.
China’s conventional drying equipment accounts for about 80% of China’s equipment, of which furnace gas drying is almost all domestic equipment. There are more than 20 domestic manufacturers of conventional drying equipment with a certain scale. The design level and technical performance of the equipment are close to those of foreign products. In some respects, they also have their own characteristics and meet the needs of national conditions. The quality of domestic drying equipment can fully meet the requirements of wood drying production [3]. Because of the large price difference between domestic and foreign products, domestic manufacturers and enterprises should base themselves on domestic products when choosing drying equipment.
The design of conventional drying equipment in China is comparable to that in the world. The research of wood drying technology is more comprehensive than that of foreign countries, and it can be considered that some aspects are at the international advanced level. Compared with the advanced drying equipment abroad, the main differences of the conventional drying equipment produced in our country lie in: (1) the accuracy and reliability of the detection and control system are poor. The main reason is that the measurement errors of equilibrium moisture content, relative humidity and wood moisture content are large. (2) The quality of spare parts such as steam valves and traps is poor and the qualified rate is low. The qualified rate of domestic steam valves is only about 30%[3], which causes serious steam leakage and high energy consumption. (3) Thermodynamic calculation of drying chamber is extensive. Usually, according to experience, 3-6 m3 heat transfer area is allocated for each m3 material. (4) The equipment is rough in processing and beautiful in shape. The sealing and thermal insulation of drying kilns are poor, and the heat loss of some drying chambers is as high as 20%[3]. _Disorderly competition in drying equipment market to attract customers at lower prices leads to a decline in product quality [5].
Desiccant drying has become the second drying technology after conventional drying due to its remarkable energy saving effect, good drying quality, non-pollution of the environment by electric energy and relatively mature technology. It has occupied a considerable proportion in wood drying equipment in Canada, Japan, Italy, the United States, Britain and France. Since 1980, China has introduced foreign dehumidifiers. In the mid-1980s, it began to imitate foreign products and gradually embarked on independent design and manufacture of dehumidifiers. Since the 1990s, the manufacture and application of dehumidifiers in China have developed greatly, and the popularization rate in the south is better than that in the north. At present, there are 8-10 dehumidifier manufacturers in China. According to rough estimates, the total drying capacity of the dehumidifier being used in China accounts for about 1/10 [6] of the total drying capacity of the whole country. The domestic dehumidifier accounts for about 70% of the equipment. The dehumidifiers imported from China mainly come from Italy, Canada, the Netherlands, Japan and the United Kingdom.
The reasons that affect the promotion of dehumidification and drying are as follows:
(1) The dehumidification drying temperature is low and the drying cycle is long. At present, the commonly used refrigerants are R22 and R142b. The corresponding maximum temperature of drying chamber is lower than 50 C and 65 C respectively, while the maximum working temperature of conventional drying is generally between 80 C and 90 C. The period of dehumidification drying is 1/3 to 1/2 longer than that of conventional drying.
(2) Simple dehumidification drying generally uses electric heating as auxiliary heat source, and the dehumidifier can only recover the heat from the exhaust of the drying chamber. The heating of drying chamber depends on electric heater, which has high power consumption. Therefore, dehumidification and drying can save energy and money in areas with high electricity price and tight power supply.
(3) Most wood processing enterprises have poor awareness of energy-saving, and do not understand the principle of energy-saving in dehumidification and drying.
Efficient and Clean Air Energy
With the advancement of comprehensive renovation of coal-fired boilers, efficient and clean air energy is expected to relieve the urgency of coal-fired and open up new ways of energy development. It is understood that the air energy industry is green, energy-saving, environmental protection, non-combustion of energy, no exhaust emissions, no pollution of the air, not to cause haze disasters, can be fully used in hot water, heating, drying and other fields, is indeed one of the best alternatives to traditional boilers.
Heat pump energy-saving drying unit
Air-energy heat pump is based on the inverse Kano principle. Freon is compressed by the compressor to become high temperature and high pressure gas. It enters the heat exchanger on the indoor side, and condenses and liquefies the refrigerant to release high temperature heat to heat the air in the drying room. The materials in the drying room vaporize and evaporate the water in the materials through hot air. The evaporated water vapor is discharged from the dehumidification system to achieve the purpose of drying materials. After condensation and exothermic, the refrigerant changes into low-temperature and low-pressure liquid through throttle valve. As the pressure drops suddenly, the liquid refrigerant enters the evaporator, which continuously absorbs the low-level heat energy of surrounding air, evaporates rapidly into gaseous state, and the refrigerant which absorbs certain energy flows back to the compressor and enters the next cycle. In this way, the continuous circulation of refrigerant can realize the transfer of heat in the air to the drying room to heat the air temperature in the room.
Using the working principle of heat pump to make heat is contrary to air conditioning refrigeration – the national refrigeration standard is 1000 watts and the electric refrigeration is 2800 watts. According to the principle of heat balance, at least 2,800 watts of heat are produced at the same time, together with 1,000 watts of electricity input, the actual heat generated is 3,000-4,000 watts, which is conveyed to the thermal insulation water tank, and its power consumption is only a quarter of that of the electric water heater (even if the thermal efficiency of the electric water heater is 100%, the input of 1,000 watts of electricity is only 1,000 watts of heat).
Under the situation that the country vigorously advocates clean energy and green buildings, the air energy industry will also usher in more development opportunities. Domestic dryer technology has been in a stable state, there is no obvious development and change.
However, because the dryer is also a big energy consumer, with the increasing energy shortage in recent years, new energy-saving and efficient dryers such as air-energy high-temperature heat pump dryer, automatic adjustment of drying time, intelligent dryer control type have been rapidly promoted and popularized, which is also the inevitable trend of drying industry development in the future.
Material drying process is a huge energy-consuming process. According to statistics, in most developed countries, the energy used for drying accounts for 7-15% of the total national energy consumption, while the thermal efficiency is only 25-50%. And most drying processes, especially for heat-sensitive materials such as food and biological materials, will have an impact on their color, nutrition, flavor and organization. Heat pump drying technology has the advantages of less energy consumption, less environmental pollution, high drying quality and wide application range. Its excellent energy-saving effect has been proved by various experimental studies at home and abroad.
It is reported that the main principle of high temperature heat pump dryer used in drying process is to use heat pump evaporator to absorb heat energy in the outside air, or to recover waste heat from the exhaust during drying process. After the work of the compressor, the energy is transported (transferred) to the drying oven. The hot air in the drying oven is heated repeatedly, absorbing moisture in the material, cooling and humidifying itself, and passing through the hot air. The process of dehumidification or condensation takes away the moisture from the material and eventually realizes the continuous drying of the material.
Air-energy heat pump drying equipment has the advantages of energy saving and emission reduction, safety and environmental protection, good drying effect, high efficiency and energy saving, low operating costs, labor saving, wide range of use and so on.
Air-energy heat pump drying equipment system has the advantages of saving electricity, safety and fast heating speed, especially its thermal efficiency is higher than that of other drying equipment.
300%
In the current situation of energy shortage in the world, it will be the main product in the future drying market.
papa
Therefore, the high temperature heat pump dryer can provide a new solution for the low cost and high quality drying of many materials, which has strong market competitiveness. In the current environment of energy saving and environmental protection being paid more and more attention, and the requirement of drying quality for materials is getting higher and higher, heat pump dryer, a new type of drying device with saving money, energy saving, high efficiency and good drying quality, has obtained excellent development opportunities.
Heat pump dryer features:
Air-energy heat pump dryer is a new drying device. The heat pump absorbs the low temperature heat energy from the exhaust gas of the dryer. After raising the temperature of the heat energy, it is used to heat the drying medium which enters the dryer. At the same time, the water in the exhaust gas of the dryer is cooled and condensed to liquid water to be discharged. Compared with conventional dryer equipment, heat pump dryer has the following outstanding advantages:
1. Environmental protection: There is no need for environmental protection review. When working, only electricity is consumed and no pollutants such as dust, smoke, burning waste, odor are discharged. There is no problem of environmental protection discharge from boilers; there is no smoke and odor emissions, which can maximize the color and flavor of the articles themselves.
2. Safety: Compared with conventional boilers, there is no open fire, no high pressure, no hidden danger of burning fire and explosion, no need for boilers to record, and no need for annual safety inspection, which reduces the annual inspection cost; it is convenient to use inert drying medium completely closed cycle for safe drying of flammable, explosive and oxidizable deteriorating products.
3. Low temperature: The patented low temperature heat pump technology improves the efficiency of ordinary heat pump by 20% at low temperature. It is easy to realize low temperature drying at 0-80 C under atmospheric pressure, and can obtain high drying quality.
4. Intelligent control: The core control system developed independently improves the defect of single function and data acquisition error of other control systems in the market.
5. Save labor costs: easy to operate, no need for professional boiler operators to save operating and management costs.
6. Energy saving: The energy consumption of high temperature heat pump dryer can be reduced by more than 30%-40% compared with the traditional boiler drying method.
 
After-sales service is solemnly committed to the principle of improving customer satisfaction:
1. The company establishes complete data files for the products sold, and has a professional and capable after-sales team to provide all-round tracking service and excellent after-sales service.
2. According to the actual needs of users to provide a complete use and design plan from equipment selection to site design, engineering installation, after-sales service as a whole.
3. At any time to solve the task technical problems for you, the company will regularly visit the status of equipment use; after-sales service team will periodically inspect, prevent trouble before it happens, so that you truly experience excellent service quality.
4. Carry out timely after-sales maintenance and maintenance services in strict accordance with the after-sales service terms. The free warranty period is one year, and the maintenance of spare parts is provided free of charge during the warranty period.
5. Lifelong maintenance, equipment failure after expiration of the warranty period, damaged parts are only charged at ex-factory price.


Product detail pictures:

Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi detail pictures

Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi detail pictures

Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi detail pictures

Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi detail pictures


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The key to our success is "Good Products Good quality, Reasonable Value and Efficient Service" for Lowest Price for Air Source New Energy Water Heater Heat Pump - Sludge drying – Sunvi, The product will supply to all over the world, such as: Durban, Iraq, Chile, We've established long-term, stable and good business relationships with many manufacturers and wholesalers around the world. Currently, we've been looking forward to even greater cooperation with overseas customers based on mutual benefits. You should feel free to contact us for more details.
  • The company keeps to the operation concept "scientific management, high quality and efficiency primacy, customer supreme", we have always maintained business cooperation. Work with you,we feel easy!
    5 Stars By Doris from Ukraine - 2015.05.15 10:52
    Company director has very rich management experience and strict attitude, sales staff are warm and cheerful, technical staff are professional and responsible,so we have no worry about product,a nice manufacturer.
    5 Stars By Ada from Slovenia - 2015.06.12 16:22

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