Radiant Heat USA Rotating Header Image

Brazed Plate Heat Exchangers

Brazed plate heat exchangers: result of great experience

Nov 8th, 2010
by admin.
Comments are off for this post

Brazed plate heat exchangers are the result of latest technology and many years of experience in the world of heat transfer. Its design may look like traditional design but the technology used inside it is fresh and advantageous. Corrugated plates are used to separate two media in the form of thin plate ensuring effective heat transportation among them. Its design helps to manage extreme temperature and rugged environment with great ease allowing quick heat transfer. The turbulence flow is very high that helps the heat to flow uniformly at the plate’s surface.

The various issues related to heat transportation have been solved through brazed plate heat exchangers that are available in many models such as 3”*8” model, 5”*12” model and 4-1/4”*12” model and sizes. These are very reliable because of being tested on various industrial standards. Nowadays, many industries require space oriented products due to limited availability of space and these exchangers are small in size and large in capacity thus suitable for most industries. This does not require a heavy investment because they are available at affordable price levels and can be easily obtained from various retailers as well as from online stores.

Brazed plate heat exchangers use asymmetric channels with an aim to produce efficient solutions through transportation of heat from one liquid to another. Depth, drawing and stamping depends upon the requirement of any particular industry. There are many manufacturers offering use of advanced technology and skill of highly qualified professionals in the development of brazed plate heat exchangers. These exchangers are used in industries like chemical, beverages, pharma, power, dairy and biotechnology in various operations and applications. These are available in different types that include herring bone, semi-welded and free flow and are selected by customers depending upon the necessity. One needs to go through technical description before buying from any supplier.

Cleaning in place for heat exchanger installation

Oct 15th, 2010
by admin.
Comments are off for this post

All types of heat exchangers need regular cleaning surfaces to remove contaminants such as scale, dirt and germs. Everhot exchanger – a specialized device designed for gentle removal from the surfaces of all kinds of dirt.

Brazetek BT3x8-30, 40 and 50 are made of stainless steel using high quality components (pumps, valves, etc.) in accordance with ISO 9001 and CE-mark. Apparatus for washing smaller Brazetek BT5x12-20  and Brazetek BT5x12-40 of the reinforced plastic industry. Brazetek BT5x12-30 is mobile and can be easily transferred from place to place because of its design. Apparatus for cleaning are able to reverse the flow, and models Brazetek BT5x12-70, 60 and 50 also have a built-in heater. All washing liquids specifically designed for use with the apparatus of Brazetek and provide high-quality washing with caring for the equipment.

Service brazed heat exchangers from Brazetek

Oct 4th, 2010
by admin.
Comments are off for this post

Seal brazed plate heat exchangers in service subject to the normal aging process. The brazed plate pack, depending on the operating conditions can be repeatedly tightened to achieve the minimum packet size «PP»-min.

Defining the size of the packet (packet lengthbrazed plates):

* “Pp max.” = Packet size of the new brazed plate heat exchangers or a package in the new seals.
* “Pp min.” = Minimum allowable size of the package
* Pp = actual size of the package of brazed plates after the braces between the pp max. ” and “pp min.”

Disabling and opening heat exchangers

The procedure of opening and repair of heat exchanger:

1. Slowly close the valve on the inlet (the side with higher pressure);
2. Turn off the pump;
3. Close the valve at the outlet;
4. Repeat steps 1-3 for the second side heat exchanger;
5. Cool the heat exchangers to a temperature of approx. 40 ° C;
6. PHE emptied and ventilate;
7. In multi-pass brazed plate heat exchangers to dismantle the inlet of the pressure brazed plate and, if necessary, fitting elements.

Before opening the brazed plate heat exchangers to comply with the following:

1. Clean the roller, the upper and lower rails, and a package of brazed plates,. If necessary, lubricate the guide roller;
2. Clean and lubricate the tie rods;
3. Zamarkirovatbrazed plate pack applying paint diagonal line;
4. Record the actual size of the package ofbrazed plates, “pp.

Cleaning the brazed plates

With light pollution can be cleaned brazed plates directly from the disassembled PHE warm running water using a soft brush. Heavy contamination may also be removed by the cleaning of high pressure.

When cleaning must not be damaged surface of the stainless brazed plate (passive layer). Therefore the use of cleaners and abrasives, as well as metal brushes, etc. not permissible!

When carrying out a cleaning of high pressure to observe a sufficient distance from the brazed plate. Seals can be knocked out of a jet of high pressure groove.

Very strong deposition on the wafer can be removed by chemical soaking. This should be selected chemicals for cleaning, so that was not damaged material and seal brazed plates. Its suitability for these materials must be confirmed by the manufacturer of detergent.

Next, give general advice to detergents.

For scale, and similar deposits:
Detergent: phosphoric acid
Concentration: max. 5%
Temperature: max. 20 ° C
The recommended duration of exposure: 1 hour.

For oily, fatty and biological contaminants eg., Silt or bacteria:
Detergent: sodium hydroxide
Concentration: max. 4%
Temperature: max. 20 ° C
The recommended duration of exposure: 24 hours.

Must comply with the safety manufacturer of detergent!

For all of the clean use only demineralized, or free of chloride water with low hardness.

General maintenance work

Data on the operation of brazed plate heat exchangers should be regularly removed and analyzed in order to promptly reveal the decline of its characteristics. Brazed plate heat exchangers should be checked periodically by specially trained personnel on the density and the ability to hold pressure.

In order forbrazed plate heat exchangers at any time could easily be opened, it is necessary to ensure sufficient lubrication of all moving parts.

This concerns in particular:

* Surfaces between the compression nuts and lock washers or bushings;
* Threads tie pins;
* Bearing the guide roller to the pressurebrazed plate or the intermediatebrazed plate (if available);
* Carrier and the guide rail, top and bottom.

Caring for a steel frame:
Coated with synthetic resin cold-curing frame can be cleaned with a sponge, rag or soft brush with a weak alkali cleaning solution. Damage to the lacquer coating are removed after cleaning.

Caring for a frame made of stainless steel:
Stainless steel frame (or coated with Cr-Ni-steel) cleaned the same way as the steel frame and then dried, followed by deposition of lubricant that contains no acid inclusions.

plate heat exchangers to be opened for preventive maintenance and repair work only when revealed an increased loss of pressure, temperature fluctuations, or leakage, which can not be resolved by other means. However, depending on the operating conditions necessary to carry out at least once a year maintenance.

Plate heat exchangers

Sep 29th, 2010
by admin.
Comments are off for this post

Plate heat exchanger designed to cool or heat milk, cream, yoghurt, beer, wine, juices, drinks, alkalis, water, vegetable oil, melange and other liquid products in a closed stream.

Due to the thermal efficiency of brazed plate heat exchangers are characterized by high level of compactness. Heating or cooling installation-assembled at their base, have much smaller dimensions than the installation of similar use of other types, the efficiency in all more than 90%. Details of plate heat exchangers in contact with products manufactured from materials approved for use in the food industry. Depending on the chemical and physical properties of products, as well as thermal conditions (temperature, pressure) plate heat exchangers are equipped with gaskets of suitable materials (food rubber, silicone, Teflon, etc.). Heating and cooling plate heat exchangers allow for a closed sink under the pressure of the circulation, easy to operate and repair.
# Refrigerants is water or brine.
# The coolant is water vapor.
# Plate heat exchanger (heat exchanger) consists of heat exchanger plates, a bed and push plates, strapped together with pins.
# Heat plates are issued in various types, differing:
by type of seal-tight apparatus
the geometric dimensions.
Type A seal mortgages – securing fastening seal to the plate with Clip clamp (PBC-1, PMK-1).
Type B Mounting gaskets to the plate with the adhesive bond (MSL-1).

All the best in technology heat exchanger

Sep 28th, 2010
by admin.
Comments are off for this post

Brazetek produces and offers to supply high-performance heat exchangers of different types of constructive cooperation with leading international manufacturers TRANTER International AB and SWEP International AB.

Our products are manufactured on four continents. The main production are located in Sweden, Switzerland, USA, Malaysia, Slovakia, China and India. Since 2000, the collapsible plate heat exchangers unique series GX, GF, GC, GM, GL, GW, GD produced in Canada.

We work closely with our clients to achieve innovative and cost-effective solutions. Our equipment can work fine, both independently and as a component of the installation or the manufacturing process.
Possible applications of brazed plate heat exchangers:

* Oil cooler (cooling lubricants and hydraulic oils in various industries)
* Water heater (or as they are called, water heaters) in district and autonomous heating)
* Water heaters (energy)
* For heating, cooling and gas recovery
* For heating, cooling and recovery of oil (for oil and gas industry and petrochemical industry)
* Air cooler (air cooling), and dehumidifier (dehumidification of compressed air used in the actuator)

Benefits of brazed plate heat exchangers

Sep 5th, 2010
by admin.
Comments are off for this post
Brazed Plate Heat Exchangers

Brazed Plate Heat Exchangers

To date, construction of brazed plate heat exchangers is the most advanced solutions for heat transfer problems. With this brazed plate heat exchangers have successfully implemented in almost all industries.

- Low investment and operating costs, as well as the negligible costs for maintenance vehicles;
- Highly efficient heat transfer (heat transfer coefficient on average 3-5 times more than in the heat exchangers with plain tubes);
- Asymmetric channels for more efficient solutions;
- Use the lowest temperature difference – a small footprint;
- Self-cleaning effect through high-turbulent flow;
- Increasing capacity by expanding the package of plates;
- High degree of reliability due to virtually complete elimination of the possibility of mixing media;
- Easy disassembly and cleaning;
- Slight weight.

Ease of Use

- Ease of installation, use and repair;
- Legkoizmenyaemaya power of the heat exchanger by installing an additional number of plates;
- Minimum surface contamination due to high velocity and turbulence;
- To save space and money due to the small weight and dimensions;
- Removing the possibility of mixing of liquids, due to the specific configuration of seals;
- High corrosion resistance.

Efficiency of heat transfer

- Minimal surface heat transfer due to the high heat transfer coefficient;
- Low pressure loss through the optimal selection of the type of plates with different profiles of heat-exchange channels;
- Effective temperature control system due to the small volume of fluid.

Optimal set

- The possibility of selection of equipment in full compliance with the requirements of the customer;
- Wide range of shapes and sizes of heat exchange plates;
- Possible heat exchange surface: 5 – 1750 m2;
- Possibility of selecting heat exchangers as with 4 and with 6 ports;
- Maximum load – 60 MW;
- Consumption 5m3 – 4500 m3

Taco Pump Installation Advice

Jan 16th, 2010
by admin.
Comments are off for this post

Installation does not violate the integrity of the interior and the concept of the facade, as No internal and external unit and takes up little space and it will know your guests only, if you like.

Taco Pump do not apply to low-cost equipment. The initial costs of installing these systems are somewhat higher than the cost of conventional radiant heating and air conditioning. Price geothermal Taco Pump is calculated from the condition of 300 .. 400 USD per 1kW heat output. However, if we consider the operating costs, the initial investment in a geothermal radiant heating supplies, cooling and hot water to quickly pay for themselves through energy savings. Also, be aware that when you heat does not require any additional communication, except for household electrical wiring.

Installation of Taco Pump require internal electrical works, installation of internal ducts, installation of an external brazed heat exchangers. The cost of these works depends on your requirements and installation costs of the company.

There are the following design geothermal Taco Pump:

* Taco Pump with an open loop: coolant is fed directly from the reservoir and after the cooling cycle is returned;
* Taco Pump with closed loop: coolant is pumped through a closed circuit, which can be traced deep into the ground or the bottom of the reservoir. This is more environmentally friendly method than an open loop;
* Taco Pump with a horizontal heat exchanger: a closed loop heat exchanger is placed horizontally in the deep trench;
* Taco Pumps with vertical heat exchanger: a closed loop heat exchanger is installed vertically in the prepared hole. Used in heavy soil or limited space area. The most efficient is a heat pump with closed loop: coolant is pumped through a closed circuit, which can be traced deep into the ground or the bottom of the reservoir.


pex