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The AHR expo 2020 promises to be the biggest congregation of HVAC professionals in the world, which is a very exciting prospect for those looking to make new connections, find better suppliers and upgrade their current HVAC systems. However, with so many options and vendors showing their wares, it can be overwhelming and it is important to go into AHR expo 2020 with a game plan to maximize your time.  With the following guidelines you will be able to efficiently manage every aspect of your experience. Don’t Ignore The Basics While it can be exciting to see demonstrations of brand new technology that looks destined to change the HVAC world remember that most of the time these out-of-the-box ideas die after a few years. What never falls out of fashion is the tried and true core components of the HVAC industry and it is in these areas where incremental progress can lead to vast differences in your life. The humble heat exchanger might seem as if it hasn’t been upgraded in decades

Spiral plate heat exchanger improved heat transfer, actually also is in order to improve the efficiency of the spiral plate heat exchanger and the ability to, first of all, we actually is to pay attention to, and also reduce the thickness of the plate thickness plate design, and on its corrosion resistance would have no relation, is associated with the bearing capacity of spiral plate heat exchanger equipment. If the plate is thickened, the pressure capacity of the heat exchanger can be improved. , spiral plate heat exchanger on the plate if using combination of chevron plate, this time also is to pay attention to each other with respect to its adjacent plate upside down, on the corrugated will have to contact each other, at this point, we also is to pay attention to, actually this time also can form high density, homogeneous distribution of fulcrum, plate Angle away L and its edge sealing structure has gradually improve, make the heat exchanger equipment has the very good bearing cap

Spiral plate heat exchanger equipment can be broken down, mostly because of quality problems. Compared with the heat transfer surface of other heat exchangers, the heat transfer surface of this heat exchanger is quite thin, that is, 0.5mm, and the allowable high corrosion degree is 0.05mm/ year. The material of common spiral plate heat exchanger equipment usually USES alloy material (304 or 316), 304 is the low cost of austenitic stainless steel, has the ability to resist corrosion to a certain range of organic matter, but the ability to resist hydrochloric acid and sulfuric acid is weak. Spiral plate heat exchanger equipment can be broken down, but also because of its own maintenance problems. Spiral plate heat exchanger equipment is an important component of heat exchange technology in process industrial equipment. The resilient gasket that seals between the various helical fins is a vulnerable part and also an easily aged part under natural conditions. Its service life has an impo

When selecting spiral plate heat exchanger equipment, Murphy experts suggest that users should specify the general requirements for heat exchangers, including the specific requirements for the selection of spiral plate heat exchanger equipment should have thermal performance, including the flow of fluid on each side, inlet and outlet temperature, heat transfer, etc. Attention should also be paid to the type of fluid and the fluid's thermophysical properties, physical and chemical properties (such as fouling, corrosion, danger, and impurities, etc.). Clarify the operating conditions, working pressure and environmental conditions of spiral plate heat exchanger equipment; Next, it is necessary to pay attention to the clear technical and economic requirements, such as heat exchanger material, price, weight, size, flow resistance and fan and pump power, operating life, maintenance and cleaning requirements, maintenance cycle, transportation and installation restrictions. www.murph

Plate spacing in spiral plate heat exchanger, the ripple height or the gasket groove depth is 25% higher than normal, so that can prolong the heat exchange between the liquid on the plate, so that will make heat transfer more sufficient, increases the cold and hot medium temperature, at the same time, it can improve the thermal efficiency, small heat transfer temperature difference is only 1 ℃. Spiral plate heat exchanger heat transfer coefficient is higher, has the characteristics of high efficiency and energy saving, because the liquid into the heat exchanger plate, between turbulence is very developed, the formation of turbulence and support the contact between the plate and there will be more close relationship, many support contact will also makes heat exchanger heat transfer capacity was improved, bearing capacity will be strengthened. Murphy spiral plate heat exchanger plate stiffness is better. Since the thickness and width of the gasket (that is, the volume) on the much larg

Spiral plate heat exchanger devices used by the plate on both sides of seal groove, of course, there will be a continuous distribution side, and, in general, actually a side is straight, the other side also is irregular corrugated side. The continuous side edge in the center will provide strong support to the gasket, but the corrugated side edge of the plate and the corrugated side edge of the gasket will also realize just biting each other, which will make the gasket more firmly fixed on the plate, not easy to slide out of the seal groove due to pressure fluctuations and other reasons. The plate used in the helical plate heat exchanger equipment, Murphy experts use new technology and make non-bonding gasket appears to be very easy to install, and the ridgelike projection on the outside of the gasket just matches the groove on the back of the other plate, so that the whole plate group can get stuck when clamping to avoid dislocation. www.murphyfinnedtubes.com Spiral plate heat e

The application of spacing column in spiral plate heat exchanger is, simply speaking,  refers to the small cylinder or cuboid welded on the spiral plate. The function of spacing column in spiral plate heat exchanger is to keep the spacing of the spiral plate to one. At this time, the rigidity, stability and strength of the spiral plate can be improved. Most of the spiral plate heat exchanger manufacturers use the fixed distance column is made of the car, because the different center of the car caused by the beating of its section center residual boss, in the spiral winding plate surface damage is very large, and reduce the pressure capacity of the cylinder body. Murphy adopted the blanking and shaping process to effectively solve the problem and greatly improve the production efficiency. When it comes to spiral plate heat exchanger equipment, we should pay attention to the middle of Japan and Sweden, carbon steel distance column extruded by wire, the surface after phosphating treatme

Spiral plate heat exchanger in the use of the cleaning and maintenance of its plate will become more important. Murphy experts remind that we need to pay attention to the spiral plate heat exchanger was carried out in actual use, generally don't collapse under the wash, rinse area with medium to flow in the opposite direction, this is not only out of the stuff, but its pressure can not be higher than the pressure of work, at this time we can also for cleaning stainless steel without corrosive chemical cleaning agents. Spiral plate heat exchanger cleaning and maintenance, to pay attention to, if it is used for a long time, the plate is bound to have a certain amount of sediment scaling, so it is bound to affect the effect of heat exchange, in view of this reason, also need to be removed regularly. In the process of cleaning the heat exchanger to break up, with a brown brush to clean the surface dirt, or with a non-corrosive chemical cleaning agent wash. Be careful not to use a meta

People is through the process equipment is dripping cold movement time or stop the cooling process of dripping to find failure phenomenon in a spiral plate heat exchanger seals, and in terms of some of the spiral plate heat exchanger, its will to a large extent, is also has the function of secondary regulation allowed in case of a small drip when also can again put the spiral plate heat exchanger group on tight. After that, when the spiral plate heat exchanger is used, it will increase the stress between each sealing gasket to a large extent, which can solve the leakage phenomenon of equipment in a short time. In the newly assembled spiral plate heat exchanger equipment, and in this regard, that is, can use a larger combination of length size, when the leakage phenomenon, that is to pay attention to must tighten each plate heat exchanger, use a longer combination of length size. www.murphyfinnedtubes.com In terms of its large combination length size and its small combination len

When the spiral plate heat exchanger is used, if water/water is used as the heat transfer medium, the total heat transfer coefficient of the heat exchanger can reach 3~5 times of the heat transfer coefficient of the shell and tube heat exchanger, but the volume of the spiral plate heat exchanger is only about 30% of the shell and tube heat exchanger. When the pressure loss of spiral plate heat exchanger is used, under the condition that the flow of heating carrier is equal, the pressure drop of heat exchanger is significantly reduced, and the water supply pressure is improved from 1.4mpa to 1.6mpa. Regarding the steam consumption of spiral plate heat exchanger, it should be noted that the steam consumption will be significantly reduced, because the original 1.11kg/s has been reduced to 0.97kg/s, and the steam should be saved per hour :(1.11-0.97)×3600/1000=0.504t. https://www.alibaba.com/product-detail/Murphy-Steam-Plate-Heat-Exchanger-China_62423628044.html?spm=a2700.icbuShop.414

Remove dirt or plate scaling from spiral plate heat exchangers. For new systems, Murphy experts suggest that cleaning should be done once a week, depending on the actual situation. Clean plate surface scale (mainly CaCO3). When, choose to contain 0.3 sulfamic acid solution or containing 0.3 ullotopine, 0.2 aniline, 0.1 potassium thiocyanate 0.8 nitric acid solution as the cleaning solution, cleaning temperature 40 ~ 60℃. Spiral plate heat exchanger without removing equipment for chemical immersion cleaning, attention should be paid to open the inlet and outlet of the heat exchanger cooling medium, or when the installation of the equipment is installed on the inlet and outlet of the medium over DN25 clean mouth, at this time should have good cleaning fluid injected into the device, wash clean with clear water after soaking should also be the residual acid, pH 7 or higher. https://www.alibaba.com/product-detail/Murphy-Steam-Plate-Heat-Exchanger-China_62423628044.html?spm=a2700.icbuS

Spiral plate heat exchanger channel selection: for the cold and hot fluids for heat exchange, first of all, it is necessary to pay attention to the unclean and easy to scale fluid suitable to go through the tube, because the tube cleaning is more convenient; In this case, the corrosive fluid is suitable for pipe passage, after which the tube bundle and shell can be avoided from being corroded at the same time; The fluid with high pressure should go through the pipe to avoid the shell to bear the pressure. For the selection of the channel of spiral plate heat exchanger, the saturated steam should go through the shell path, because the heat transfer coefficient of steam condensation has nothing to do with the flow rate, and the condensate is easy to discharge. If the temperature difference between the two fluids is large, it is necessary to pay attention to the use of fixed tube spiral plate heat exchanger equipment, it is appropriate to make the heat transfer coefficient of the fluid t

When it comes to spiral plate heat exchanger, there will be surface type, regenerative type, direct contact type, fluid connection indirect heat transfer mode. In other words, on its own, it's an energy saving device at different temperatures; Helical plate heat exchanger itself is an energy saving device which can realize the heat transfer between materials at different temperatures between two or more fluids. And the spiral plate heat exchanger equipment is used, that is, the heat will be transferred from the higher fluid to the lower fluid temperature, the fluid temperature to meet the requirements of the process, in order to meet the needs of the process conditions, and at the same time is one of the main equipment to improve energy efficiency. https://www.alibaba.com/product-detail/Murphy-SS304-SS316L-SMO254-C276-Titanium_62424886016.html?spm=a2700.galleryofferlist.0.0.11491aee3sTrQP Speaking of the spiral plate heat exchanger industry, murphy's team found through t

Speaking of spiral plate heat exchanger heat transfer efficiency, the medium flow in the narrow channel, for its rotating centrifugal, actually is also will be affected by distance column approach, at this point, also will be relatively easy to obtain low Reynolds number turbulence (but not much pressure lung), coefficient of heat transfer is very high, high up to 2500 kcal / 2 · h · ℃, its thermal efficiency is generally 1 to 3 times or other heat exchanger. Murphy spiral plate heat exchanger is characterized by the recovery of low-temperature heat. With this device, heat exchange can still be carried out under the condition that the temperature difference between the two fluids is relatively small. In other words, the heat exchanger can be used to recover low-temperature heat and waste heat. https://www.alibaba.com/product-detail/Murphy-SS304-SS316L-SMO254-C276-Titanium_62424886016.html?spm=a2700.galleryofferlist.0.0.11491aee3sTrQP Murphy spiral plate heat exchanger has less

On the spiral plate heat exchanger heat transfer plate by using heat transfer plate, stainless steel sheet with respect to its material will choose or titanium plate, in the 10000 tons of spiral plate heat exchanger dedicated hydraulic press to a compacting above, at this point, can avoid the repeated stamping, plate punching time is conducted using double oil film coating technology, to ensure the plate forming precision is high. , spiral plate heat exchanger on the plate in the production, in this thinning quantity also is must pay attention to should be controlled in a 0.1 mm, the mould for the composite mould clamping, at this point, is referring to the mold should be composed of several small mold assembly, so that can ensure uniform plate stamping molding stress at the same time, in which there is a one piece mould wear can be quickly replaced, ensure the accuracy of the mold. https://www.alibaba.com/product-detail/Murphy-SS304-SS316L-SMO254-C276-Titanium_62426844241.html?sp

At present, the spiral plate heat exchanger equipment adopts the plate structure form, in most cases, it will be mainly herringbone waviness, from this point of view, in fact, it is a typical network flow plate structure, which is characterized by the fluid channel formed between the plates, the wrong line is full of contacts, the fluid around these contacts form a spiral forward orbit, at this time will produce strong disturbance. The design of the spiral plate heat exchanger on the plate, if increase the fluid flow degree, the actual use, can also reduce the thickness of the bottom layer of laminar flow, effectively improve the convective heat transfer coefficient without phase transition, so as to achieve the purpose of increasing the heat transfer coefficient. https://www.alibaba.com/product-detail/Murphy-Stainless-steel-Plate-Heat-Exchanger_62426429251.html?spm=a2700.icbuShop.41413.25.668c215dVJSQWw Murphy experts proved by experiments that for water medium, when Re=20 ~ 20

For spiral plate heat exchanger upper pieces of imported triage area has the flow guide groove design, this kind of spiral plate heat exchanger will also have closer to the role of the difference in different flow channel the flow resistance of above, on the one hand, also can make the fluid distribution in plate heat transfer area evenly, after also can avoid the uneven flow distribution and flow blind Angle in thermal efficiency brought by the decline, pitting corrosion and scaling, etc. Murphy experts designed the plates with large width on the helical plate heat exchanger equipment, and increased the pressure equalizing groove along the isopotential line, so that the resistance formed by the intersection of the streamline guide groove and the isopotential line equalizing groove was relatively small, and the grid-shaped inlet shunt zone had nearly perfect flow equalizing effect. https://szmurphy.en.alibaba.com/product/62419848726-811592052/Murphy_Stainless_steel_fin_tube_coil_h

Murphy experts suggest that we should pay attention to the inspection and acceptance of the foundation quality before installing the equipment for replacing the spiral plate heat exchanger. Base elevation, plane position, shape and main size, and then whether the reserved hole meets the actual requirements; The position of the anchor bolt is correct, the thread is in good condition, the nut and washer are complete; Place the foundation surface of mat iron is smooth wait. According to the form of spiral plate heat exchanger, enough space must be left at both ends of the heat exchanger to meet the requirements of cleaning and maintenance. The fixed head end of the helical plate heat exchanger should pay attention to leave enough space for the helical plate heat exchanger to extract the tube bundle from the shell. https://szmurphy.en.alibaba.com/product/62416452056-811592052/Murphy_Aluminum_boiler_laser_welding_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Solar_Water_He

For the installation of the helical plate heat exchanger equipment location, around this must pay attention to reserve a certain inspection site; Murphy experts suggest that the spiral plate heat exchanger must be connected to the pipeline before installation to avoid sand, oil, welding slag and other debris into the spiral plate heat exchanger, causing obstruction or damage to the plate. The helical plate heat exchanger covers a small area and is light in weight. In addition to the volume of the equipment itself, there is no need to reserve additional inspection and installation space. The thickness of the plate used for heat exchange is only 0.6-0.8mm. In the shutdown, first to pay attention to close the high pressure side of the medium solenoid valve, then pay attention to close the low pressure side of the medium solenoid valve. In the exaggerated high efficiency, environmental protection, energy saving, spiral plate heat exchanger in the heat exchange of the upper hand has become