In the 1930s, with the development of Freon refrigerators, heat pumps developed rapidly. The global energy crisis of 1973 further promoted the worldwide development of heat pumps. Heat pump worldwide large-scale commercial applications is the last 20 years, China's heat pump industry has started in recent years, but also the momentum of development is promising. Heat pump heat source mainly air, water and soil sources and other forms. At present, our country uses more water source heat pump, and using air source heat pump to make domestic hot water has also gradually risen in China in recent years. In addition, due to its unique advantages, ground source heat pump has drawn more and more attention in recent years.
Due to the working mechanism of the heat pump, the heat exchange medium (water or antifreeze containing water as the main component) eventually exchanges heat with the actual water, so that the application of the heat pump faces a problem - scale. If the ground-source heat pump uses an open system, that is, the water pump is used to directly extract groundwater and exchange heat with the refrigerant and recharge or discharge at a suitable location. Groundwater contains more minerals, higher hardness, the scale problem is particularly prominent. To CaCO3, for example, the thermal conductivity of only 0.6-2.0 kcal / m2 · h · ℃, while the thermal conductivity of copper up to 260-340 kcal / m2 · h · ℃, from which we can see that as long as the exchange A thin layer of heat on the surface of the scale, resulting in heat loss is quite large. In fact, all heat pump manufacturers have always wanted to find a way to solve this application problem thoroughly.
At present, the domestic scale removal methods are mainly divided into: chemical methods and physical methods. Chemical methods Currently there are chemical agents, demineralized water and reverse osmosis and other methods, the technology has been basically forming. However, due to the many disadvantages of chemical methods, such as corrosion of equipment, the need to stop production, professionals need to operate, and expensive, need to follow-up investment. The heat pump itself belongs to a new type of energy-saving products, the use of chemical descaling will be subject to some limitations. Physical methods, which have many years of successful experience in foreign countries. In China, over the years, it has been the market for some early products. Due to limited application effects of these products, many users have avoided them and, to a certain extent, influenced people's perception of it. Until recent years, the emergence of a new coil-wound electronic descaling device has re-attracted people's attention.
British Water Treatment Company is one of the world leaders in the field of physical scale removal of scale. The company since the eighties of last century engaged in physical law to scavenge scale research, in the early nineties to develop the first generation of coil-type electronic induction water processor. In the subsequent application of the technology continues to improve, and completed in 2000 to upgrade, began the introduction of the latest generation of net yuan multi-function electronic sensor water processor. The water processor has superior descaling performance and has many advantages:
Unique digital frequency conversion technology, higher stability, stronger anti-interference ability;
Anti-scaling: prevent equipment and piping (boilers, heat exchangers, cooling towers, etc.) scaling;
Descaling: the gradual removal of equipment and pipe scale already exists;
Winding the coil outside the pipe without cutting the pipe or drilling holes in the equipment;
Not limited by the flow rate and hardness of water, the effective distance up to 100Km;
No contact with the process medium, maintenance-free;
For metal and non-metallic pipe;
Output power less than 50W, low operating costs;
With remote monitoring capabilities;
At the same time with sterilization, activation of water quality, rust and corrosion inhibition;
Eliminate the removal of detergents, corrosion inhibitors, save the cost of manual cleaning, reduce downtime;
Improve heat transfer efficiency, save energy by 30% -50%.
Kaili City, Guizhou Province Hongqi Hotel, located in Kaili City, Guizhou Province, the crossroads of the most prosperous city commercial center. There are eighty-five standard rooms, more than 80% accommodation rate, daily water supply 25 tons. Is used in Shandong, a heat pump manufacturers to provide air-source heat pump to produce hot water. Because of the local karst topography, high calcium carbonate water content, is a heavy calcium, can easily cause any kind of scaling of hot water equipment. The air-source heat pump water quality has a special high demand. Therefore, the hotel has purchased three different manufacturers of domestic well-known brands of electronic descaling instrument, but did not achieve the effect of scale and anti-scaling. Cause the water temperature is too low, insufficient water supply. Hotel had to spend thousands of dollars to build a container for storing pickling syrup, and on average every 25 days have to buy pickled syrup worth 200 yuan, and each pickling process must be shut down, can not supply and meet the customer Hot water. Therefore, it has also affected the hotel's source of tourists.
Since the installation of the British net yuan multi-function electronic sensor water processor, it has not been pickling three months. During this period, a total of 3 times to open the heat pump to see the wall without any scale. Heat pump heater inside clean as new. Water temperature and water supply have reached the technical requirements of heat pump design.
magical! Amazing Impressed! - This is Hong Qi (Hotel) general manager of British net multi-functional electronic sensor water processor emotion. Net element also has sterilization, activation of water quality, can promote biological growth and promote metabolism. I believe soon, the hotel will feel the net worth of services. From Guizhou Hongqi Hotel application, we can see that, both from a technical point of view, or economic point of view, the United Kingdom net yuan multi-function electronic sensor water processor fully meet the requirements of users; the same can be seen, not just the air Source heat pump, also includes water source heat pump, ground source heat pump, so that based on the principle of heat exchangers, and even all water-based scaling problems, net yuan can give users a satisfactory answer.
Quantum has extensive experience in the correct selection and design of screw conveyors, screw dischargers, hopper unloading and screw metering systems. The above list is typical of the type of equipment we have supplied to a variety of industries for varying applications. Whether your process and application requires mixing during conveying, dewatering, batch metering interlocked to weigh system or conventional transfer conveying we have the experience and standard equipment to ensure you have a reliable trouble free installation.
QUANTUM designs and supplies a complete range of Screw Conveyors.
These types include:
• Conveying and transfer conveyors:
• Inclined Screw conveyor
• Horizontal Screw conveyors
• Storage Hopper Discharging & Live Bottom Bin Discharging systems
• Hopper Discharge
• Dosing and metering screw dischargers
• Twin Shafted Screw Conveyors
• Dewatering and compacting screw conveyors
• Batch metering screw feeders with self-emptying storage hoppers.
• Shaftless Screw Conveyors (Auger Covneyors)
Quantum have specialized screw conveying systems installed in chemical, mineral as well as the food and beverage industries. Our designs cater for stainless steel, mild steel with liners and special steel for abrasive materials, through to fully polished, sanitary clean down applications requiring full clean out and knock down construction. Materials handled can be micro powder to granular and lumps. The selection and type of conveyor recommended is critically dependent on the material to be conveyed.
Conveying and Transfer Conveyors:
Quantum manufacture a standard range of screw conveyors incorporating intermediate center bearings or center less screw conveying for difficult sticky materials. Length of conveyors and size of conveyor depends on capacity and material characteristics.
Inclined and vertical conveying:
Quantum have designed and installed both vertical and inclined screw conveyor systems. It is recommended to design all incline conveyors without using an intermediate bearing, if possible and to keep incline to less than 75o for optimum efficiency. Whether your application requires a tubular inclined conveyor or trough conveyor, Quantum will select the most suitable conveyor for your application that is suited to the material characteristics, environment, length conveyed and your specific needs such as clean down and residue. Efficiency of vertical conveyors can be as little as 10% and generally require specific design considerations; the nature of material and feed method. Our engineers can assist with the best and most suited conveyor for your needs.
Horizontal transfer conveyors
A single conveyor can incorporate several hanger bearings over length in access of 100m. However length is very much dependent on the nature and characteristics of the material and the conveying capacity. Some materials cannot be successfully conveyed using any hanger bearings, whilst other materials will accommodate several hanger bearings trouble free. We has a general rule of maximum conveyor percentage full by volume be no more than 40% when using hanger bearings with no more that 1mm/m deflection of center pipe. Quantum design all conveyors for full load start up with much consideration given to conveyor speed to eliminate excessive wear. All our conveyors are designed with gland seal packing to protect spherical bearings.
Hopper and Live Bottom Bin dischargers
Our hopper and Bin dischargers are used when non free flowing materials need to be discharged from hoppers or storage bins. Size and quantity of screws depend on the hopper configuration and the material characteristics. Using multiple screw dischargers can increase volume of hoppers whilst ensuring a positive discharge of material at a controlled out feed. Each screw can be independently powered or interlocked with one or two drive assemblies depending on loading and capacity of the system.
Generally installed with slow speed counter rotating screw flights that can be over locked for maximum discharging capabilities they are variable pitch or variable flight diameters to ensure even material discharge across hopper.
Heating and Cooling Jackets
All Quantum Screw Conveyors can be fitted with heating and cooling jackets utilizing steam, thermal liquids, refrigerant, water or brine. Heating or cooling can be designed by our process engineers who will recommend the most suitable size and type of conveyor for your production and needs.
Clean Design
Quantum is familiar with the specific needs of the food and beverage industries. All our Screw Conveyors can be fitted with CIP spray balls and manifolds, with quick knockdown in mind to ensure complete clean-down where required. Screw Conveyors can be constructed from mild steel, 304 or 316 stainless steel, depending on the material being conveyed. Surface finish will be provided to suit specific requirements. All components such as IP ratings of electric motors and switches are selected with these specific requirements in mind to ensure compatibility with your operating procedures.
After sales support
Quantum can provide a customized service contract using experienced technicians with many years` experience in servicing and troubleshooting Screw Conveyors in all states. This service ensures your equipment is functioning to its optimum capabilities and reduces down time due to parts replacement and potential damage. Our technicians have standard customer maintenance, checking and reporting procedures.
Screw Conveyor,Tubular Screw Conveyor,Single Shaft Screw Conveyor,Twin Shafted Auger Conveyor
Quantum Conveying Systems Yangzhou Co.,Ltd. , https://www.yzconveying.com