Grand Radiators & Heat-exchangersPvt. Ltd., (Grand�®) Vizag, india has established
its operation right from its inception in 1992 with well-equipped latest in-plant facilities & qualified engineers in offering Quality, Economy & Delivery of electro chemical equipments, Engineering equipments and Turnkey Projects under single platform .With over 2 decades of manufacturing and design expertise, it has been providing various solutions in the following fields
Chlor-alkali & Desalination application.Cathodic Protection (Impressed Current) - ICCPapplication.Semi-conductors, Anodizing & Metal Finishing application.Steel processing & pickling application.Instrumentation engineering application.Defense, Atomic, Aero & Space, & Ship Building application.,Electro-chlorination application.Chemical, Paper, Petrochemical & fertilizer application.By using...Inert metals of...Titanium, Tantalum, Niobium, Zirconium, Nickel & it''s alloys.Precious metal oxides of...Iridium, Ruthenium, Platinum, Tantalum, Palladium & etc.
Shell types Heat Exchanger are classified into fixed and floating type Heat Exchangers. Fixed type Heat Exchangers are used where there are absolutely no chances for inter mixing of two fluids. In this type, the tube sheets are completely welded to the shell and acted as shell flanges. The Floating type Heat Exchangers has the advantages of removability of tube bundle and access for cleaning both inner and outer side of tubes and shell.
BEU heat exchanger are shell and tube exchangers with tube bundle consisting of 'U' shaped tubes fixed by mechanical rolling to only one tube sheet. This type of heat exchangers is designed and built with removable shell and tube to allow easy maintenance.
Brazed heat exchanger has a special heat transfer efficiency . Therefore, it can handle larger capacity with good efficiency , even though there is only a small heat exchange area. Meanwhile, it can save energy and reduce maintenance.
Brazed heat exchanger is made by welding the braze and the plate in the high temperature and in a vacuum. The plate is usually made of stainless steel, aluminum or titanium. The efficiency of heat exchanging and the loading capacity for brazed heat exchanger are higher than that of the detachable phe. The design of the plate guarantees the longest working life . You can choose a standard configuration or choose different models as you like.
The advantage of the brazed heat exchanger:
Can save your investment and transportation expenses
1¡§|can be fixed easily with the compact structure
Thin plate
High heat insulation ratio
2¡§|it can need one third water as much as that of the sheel-and-tube heat exchanger.
3¡§|less scaling factors
High water flowing speed reduce the scale . So less cleaning is needed.
4¡§|light weight
The weight is 20%-30% as much as that of shell-and -tube heat exchanger.
5¡§|durable in use
Can bear the temperature of 250¡æ and high pressure of 45 bar.
No corrosion
Remove the gasket
6¡§|high quality
The products can be used in the field of metallurgy, food, light industry, chemical industry, refrigerator and heating and ventilation.
Brazed heat exchanger is an evolution of detachable heat exchanger, the sealing material is changed from rubber pad to copper, and all the plates are combined together by copper solder. Brazed plate heat exchanger is one of the new equipment in the field of heating and cooling. Brazed heat exchanger does not have sealant pad, all the plates are made of high temperature melted and welded copper foil, the plate has a unique herringbone corrugated design, can make the fluid in low flow rate also achieve the effect of turbulence, heat transfer efficiency is high, brazed plate heat exchanger sizing is usually small, mainly used in high temperature and high pressure, rubber pad can not adapt to the working conditions. It also has certain disadvantages, brazed heat exchanger can not be separated to clean, can not be repaired, the price is slightly higher.
Industrial equipment Brazed plate heat exchanger is a new type of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape stacked and brazed. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. Compared with the conventional shell and tube heat exchanger, its heat transfer coefficient is much higher under the same flow resistance and pump power consumption, and it has a tendency to replace the shell and tube heat exchanger within the applicable range.
Applications:
Refrigeration: used as condenser and evaporator
b. HVAC: intermediate heat exchangers used in conjunction with boilers, intermediate heat exchangers in high-rise buildings, etc.
c. Chemical industry: soda ash industry, ammonia synthesis, alcohol fermentation, resin synthesis cooling, etc.
d. Metallurgical industry: heating or cooling of aluminate mother liquor, cooling of steelmaking process, etc.
e. Machinery industry: cooling of various quenching fluids, cooling of reducer lubricating oil, etc.
Design Parameters
Flow range: 1-2000 m3/h
Working pressure: vacuum-8.2MPa
Operating temperature: -195-538C
Interface size: 1"-DN300 welding, flange, thread and other connection forms
Corrosion resistance: Welding seal without rubber gasket, choice of various metal and alloy materials, super corrosion resistance, longer service life.
Application field:
Crude oil, natural gas purification and chemical products; chemical industry; pharmaceutical and specific chemicals; injection control systems;
HVAC, district heating, thermal power plants; food processing; cooling tower heat recovery
Process requirements
Pickling temperature: Raising the pickling temperature is conducive to improving the descaling effect. If the temperature is too high, it will aggravate the corrosion of the pickling solution to the heat exchanger plates. Through repeated tests, it is found that the pickling temperature should be controlled at 60.
2) Concentration of pickling solution: According to repeated tests, the pickling solution should be prepared according to the concentration of formic acid 81.0%, water 17.0%, buffer 1.2%, and surfactant 0.8%, and the cleaning effect is excellent.
3) Pickling method and time: The pickling method should be carried out by a combination of static soaking and dynamic circulation. The pickling time is static soaking for 2h first, and then dynamic circulation for 3~4h. During the pickling process, samples should be taken frequently to test the pickling concentration. When the difference between the two adjacent test concentrations is less than 0.2%, the pickling reaction can be considered to be over.
4) Passivation treatment: After pickling, most of the scale and metal oxides on the surface of the plate heat exchanger will be dissolved and fallen off, exposing new metal, which is very easy to corrode. The sheet is passivated.
Brazed Plate Heat Exchanger is small, light and compact. It does not need gaskets.Instead, it is brazed together using cooper to give a strong, compact construction.This heat exchanger is especially suitable for pressure up to 50 bar and temperatures from -196 to +550.What are the advantages of Brazed Plate Heat Exchanger? High heat transfer efficiency Compact structure Easy installation Easy Deinstallation DurabilityTable. Parameters of HFM Brazed Plate Heat Exchanger Model NoWidthHighthThicknessHole Center DistanceMax PressureMax Flow RateWeightHFQ10762069+2.3n172*421/3/4.58.00.7+0.06nHFQ15801909+2.3n154*401/3/4.58.00.7+0.06nHFQ25A783189+2.3n282*423/4.58.01.0+0.08nHFQ25B863159+2.3n269*403/4.58.01.0+0.08nHFQ3011131010+2.36n250*503/4.5181.3+0.12nHFQ3512430413+2.4n250*703/4.5182.2+0.16nHFQ3612228211+3.1n227*523181.88+0.104nHFQ50A11152510+2.35n466*503/4.5182.6+0.19nHFQ52B11152510+2.35n466*503/4.5182.6+0.21nHFQ60A11952610+2.24n470*633/4.5182.379+0.194nHFQ60B11952610+2.24n470*633/4.5182.379+0.194nHFQ90A19161611+2.35n519*923/4.5427.8+0.36nHFQ90B19161611+2.72n519*923/4.5427.8+0.44nHFQ10024849610+2.15n405*1573/4.5426.5+0.37nHFQ125A24652813+2.36n456*1743/4.5427.2+0.52nHFQ125B24652813+2.36n456*1743/4.5427.2+0.52nHFQ18030769613+2.76n567*3071.5/2.110010+0.51nHFQ21032173813+2.7n603*1881.5/2.110013+0.75nHFQ210A32173813+2.7n603*1881.5/2.110013+0.75nHFQ23032273913+2.55n631.7*205.23/4.510013+0.82nHFQ600429139822+2.78n1190*2201.5/2.130031.8+1.73n
We are the leading manufacturers of Air heat exchangers in India.
Brazed Plate Heat Exchangers represent the most compact, rugged and cost-effective means of transferring heat in many industrial and refrigerant applications. Built from 316 stainless steel with copper brazing materials, they provide exceptional corrosion resistance. The SB-Series features corrugated plates that produce highly turbulent flow in a true counter-current direction.
This results in high efficiency and a very compact heat exchanger design. Due to the smaller size and reduced material content, they can be the most economical heat transfer choice.API Heat Transfer Brazed Plate Heat Exchangers are available for process and refrigeration applications. Made from stainless-steel plates and copper or nickel brazing materials, they are suitable for a wide variety of heat exchanger applications.
Specifications
The brazed plates form two separate channel systems.
The two media assume a true countercurrent flow, completely isolated from each other.
This channel configuration is designed to produce high turbulence, promoting maximum heat transfer.
Applications
Hydronic heating
Domestic hot water heating
Radiant heating
Snow & ice melting
Chilled water cooling
Beer & wort chilling
Hydraulic oil cooling
Outdoor wood furnaces/stoves/boilers and other water to water and liquid to liquid heat transfer applications.
Advantages
Flexibility to change plate arrangement and to add or remove plate
Optimized heat recovery
Easy maintenance and suitable for CIP, plate pack easily accessible
In prevention of two different kinds of fluid from intermixing caused by internal leakage, KAORI precisely designed the D Series solution with the double-stacked plates, to eliminate the possibility of cross contamination. The unique air gap is created between the two plates. Once the internal leakage occurs, the 2nd plate becomes the shield to keep the liquid stay and flow on the same channel through the air gap. Meanwhile, vent holes outside the plate will seep out the liquid as an indication of leakage.
Aluminium ( ingots, t bars, sows, rods), copper (cathodes, cakes, billets, ingots, rods), lead (ingots), nickel (cathodes both cut and uncut briquettes, pellets, discs, etc.), tin (ingots, etc.), zinc (ingots both regular size and jumbos), steel billets (all types including crc, hrc, hdgc, plates, sheets), concentrates and ores for above items including bauxite, manganese, clinker and iron ores etc), scraps of above items including hms 1&2 and steel scraps.
