Heat exchangers exhibit rapid response to change

The Compheat range of heat exchangers is ideal for small plant rooms and various applications including heat recovery, heating, cooling, pumping and filtration.

ARI-Armaturen UK exhibited its ARI Compheat heat exchange unit that provides accurate heat control at Foodex 2006.

This trusted product within the ARI range offers a compact solution for heat transfer requirements, for the generation of both domestic hot water and LTHW (spell out) from either steam or MTHW (spell out).
Occupying less than 1m2, with low capital cost and low maintenance requirements the Compheat range is ideal for small plant rooms and various applications including heat recovery, heating, cooling, pumping and filtration.
The ARI Compheat is a reliable, efficient and low cost system that offers accurate electric or pneumatic control.
Because control is achieved by progressively bypassing secondary water flow away from the heat exchanger, the Compheat has a particularly rapid response to changes in load.
ARI Compheat benefits from a selection of standard equipment that differentiates itself from competitors and ensures high performance.
A full isolation package of high quality bellows sealed stop valves for the primary circuit, and circuit lined butterfly valves for the second circuit, comes as standard, as does the "clean in place" connectors to simplify the maintenance process.
Safety is also of utmost importance, the Compheat comes complete with a self-acting high temperature cutout to protect the unit from over heating and because the primary circuit is permanently charged there is no risk of water standing within the unit at low temperature, removing entirely the risk of legionella bacteria build up.
The packaged heat exchange units are also available with extended options that include pumped condensate systems, pressure reduction and steam conditioning.
In addition, a completely customised system can be provided to match specific requirements.
http://www.engineeringtalk.com/news/atu/atu105.html

New device replaces NH3 heat exchangers

Illustration: Paul Lange; Photograph: Rich Fee.

Steam traps were invented in 1835 and have been widely used ever since. They separate liquid from steam and reduce water hammering and other problems in steam systems. Now, Lauren Kiest, who invented the Equaply NH3 system 10 years ago, has developed a reverse steam trap to take vapor out of anhydrous ammonia (NH3) as it flows from nurse tanks to manifolds on application equipment. You can also think of it as an upside-down steam trap. Vapor is the 800-pound gorilla when it comes to handling NH3. It's virtually impossible to measure and meter a combination of liquid and vapor. Consequently, it's a challenge to apply the desired rate, and some outlets on many applicators apply much more nitrogen (N) than others.

Kiest says his invention, called the Liquimatic Vapor Separator, eliminates the need for heat exchangers. "The only purpose for the heat exchanger in an anhydrous ammonia system is to condense ammonia vapor back to a liquid," he says.

According to Kiest, the stream of NH3 entering the Liquimatic is about 45% gas and 55% liquid, by volume. NH3 is a liquid in nurse tanks, but vapor is formed by friction as it flows through hoses and pipes after leaving the tank. In addition to eliminating most of the vapor, Kiest says the Liquimatic also has more capacity than heat exchangers. For example, he says the two heat exchangers on his company's original Equaply system can supply about 60 gallons per minute, whereas the Liquimatic system can handle rates in excess of 80 gallons. "That's enough capacity for a 60-foot applicator going 12 mph to apply 250 pounds of anhydrous ammonia per acre," he says. (That's just over 200 pounds of N).

After 5 years of development, Kiest and his company -- aNH3 Company -- are now starting to sell the new devices, which are patented (U.S. 7,096,802).

The Liquimatic is surprisingly simple. A weir, or metal dam, in the canister diverts the incoming mix of liquid and vapor upward. The liquid flows up and over the dam. Meanwhile, the vapor rises to the top of the canister (see illustration above).

When the amount of vapor reaches a certain point, a float inside the canister trips a switch that opens a solenoid valve and allows the vapor to escape. A small tube attached to that valve carries the vapor to a knife or opener. The Liquimatic system actually has two identical solenoid valves. One is basically a backup for the other one. As the vapor or gas is bled off, the liquid rises, turning off the switch and closing the solenoid valve.

The liquid in the canister or tower has a small amount of head pressure. "The head pressure assures that the liquid leaving the bottom of the tower is below saturation pressure and not boiling," Kiest explains. "Therefore, a flowmeter after the tower senses pure liquid and reads correctly. Similarly, a pump after the tower does not have vapor to cause cavitation."

Applicators applying low rates may not need a pump in the system. But Kiest expects that most customers will order a system with a pump and use it at least part of the time.

"If you are running when it is really cold or if you have a really high rate of flow, you are probably going to need a pump," he says.

The pump is a Hypro hydraulic pump with special seals for NH3. Two nurse tanks with big hoses will be needed to apply high rates. The list price for a Liquimatic without a pump or any other component is $7,900.

Prices for a complete system range from about $10,000 to $25,000 depending on the size of the applicator and complexity of the system. The high end of the range is for an applicator with 24 outlets and swath control valves (but not a controller).

When a complete system is purchased, it comes assembled and mounted on a base plate that can be attached to the applicator.

"I expect the Liquimatic to replace the original Equaply system with heat exchangers this fall," says Kiest.

http://www.agriculture.com/ag/story.jhtml?storyid=/templatedata/ag/story/data/1250185785310.xml

World Leading Heat Exchanger Provider Announce New Acquisition

Alfa Laval Group – a world leader in heat transfer, centrifugal separation and fluid handling – has acquired PHE Indústria e Comércio de Equipamentos Ltda. in Brazil, a company that services plate heat exchangers in a variety of industries. The company, which had sales of about SEK 45 million in 2008 and some 35 employees, will be integrated into Tranter.

“With this acquisition we strengthen Tranter’s presence in Brazil, especially in the heat exchanger service area which supports new sales,” says Lars Renström, President and CEO of the Alfa Laval Group. “Our multibrand strategy has been successful and Tranter continues to offer its own product range under the Tranter brand through its own distribution network.”

http://www.azom.com/news.asp?newsID=18542

Alfa Laval Group acquires LHE, A Leading Heat Exchanger Company in South Korea

Alfa Laval Group (STO:ALFA)- a world leader in heat transfer, centrifugal
separation and fluid handling - has acquired 90 percent of the shares in LHE
Co., Ltd. in South Korea. The company targets the compact plate heat exchanger
market, with sales of about SEK 750 million in 2008 and some 170 employees. LHE
will be consolidated into the Alfa Laval Group from September 1, 2009.

"I`m very satisfied that we were able to acquire LHE, a well-managed company
with strong presence in South Korea and with a large potential in Asia," says
Lars Renström, President and CEO of the Alfa Laval Group. "With the acquisition
of LHE the Alfa Laval Group achieves profitable growth by adding an independent
channel to the heat exchanger market. LHE will continue to offer its own product
range, under the LHE brand, through its own sales network."

About Alfa Laval Group

Alfa Laval is a leading global provider of specialized products and engineering
solutions based on its key technologies of heat transfer, separation and fluid
handling. The company`s equipment, systems and services are dedicated to
assisting customers in optimizing the performance of their processes. The
solutions help them to heat, cool, separate and transport products in industries
that produce food and beverages, chemicals and petrochemicals, pharmaceuticals,
starch, sugar and ethanol. Alfa Laval`s products are also used in power plants,
aboard ships, in the mechanical engineering industry, in the mining industry and
for wastewater treatment, as well as for comfort climate and refrigeration
applications. Alfa Laval`s worldwide organization works closely with customers
in nearly 100 countries to help them stay ahead in the global arena. Alfa Laval
is listed on the Nordic Exchange, Nordic Large Cap, and, in 2008, posted annual
sales of about SEK 28 billion (approx. 2.9 billion Euros). The company has some
12,000 employees. www.alfalaval.com

About LHE Co., Ltd.

LHE or Leader Heat Exchanger serves the market for compact and welded heat
exchangers with focus on offshore oil & gas, marine, nuclear power, the process
industries and HVAC. LHE employs approximately 170 people engaged in R&D,
design, manufacturing, sales and after sales service. In 2008, the company
enjoyed sales of about SEK 750 million. www.lhe.co.kr
http://www.reuters.com/article/pressRelease/idUS98389+01-Sep-2009+BW20090901

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Spiraflo heat exchanger reconditioner

Teralba Industries have expanded their refurbishment options for Spiraflo Tubular Heat Exchangers.

This includes S5.5 & S6, which were installed into many Heat Transfer systems and pasteurisers in 1970,s and 80’s.

Most Spiraflo Multi-annular Heat Exchangers sold over the last 35 years in Australia can be cost effectively retubed and reconditioned.

Reconditioning can included new spiralled tubing, new gaskets sets, high pressure cleaning and hydrostatic testing to applicable Australian Standards.

If a Spiraflo is unrepairable then a replacement Dimpleflo Tubular Heat Exchanger can be supplied with exact dimensions to fit into pipework or plant where the Spiraflo was.

Repair and recertification of existing heat exchangers to new condition is both cost effective and tax effective, as the repairs are
http://www.foodmag.com.au/Article/Spiraflo-heat-exchanger-reconditioner/496257.aspx

World Leading Heat Exchanger Provider Announce New Acquisition

Alfa Laval Group – a world leader in heat transfer, centrifugal separation and fluid handling – has acquired PHE Indústria e Comércio de Equipamentos Ltda. in Brazil, a company that services plate heat exchangers in a variety of industries. The company, which had sales of about SEK 45 million in 2008 and some 35 employees, will be integrated into Tranter.

“With this acquisition we strengthen Tranter’s presence in Brazil, especially in the heat exchanger service area which supports new sales,” says Lars Renström, President and CEO of the Alfa Laval Group. “Our multibrand strategy has been successful and Tranter continues to offer its own product range under the Tranter brand through its own distribution network.”

PHE Indústria e Comércio de Equipamentos Ltda. will be consolidated in the Alfa Laval Group from August 1, 2009.

http://www.azom.com/news.asp?newsID=18542

Mitsubishi Electric energy-saving heat exchangers

New energy-saving, AA-rated M Series models from Mitsubishi Electric offer combination of cutting-edge inverter technologies with highly efficient heat exchangers.

This means highly efficient heat exchangers deliver remarkable energy efficiency at the quietest operation possible.

Mitsubishi Electric heat pump systems have always been among the quietest on the market and with its super-quiet 'Silent Mode' of operation at just 19dB, the MSZ- GE Series is now the quietest heat pump available.

The inverter-driven heat pump air conditioning units in the MSZ-GE range deliver exceptionally efficient heating or cooling.

With a choice of 4 new indoor units that can be used in a single split system or as part of an MXZ Multi system, the line-up offers complete flexibility for smaller multi-room applications.

The heat exchanger capacities of both the indoor and outdoor units have been increased to enhance overall heat exchange efficiency levels, yet the new 'Silent mode' setting added to the fan speed settings ensures a super-quiet operation below 20dB for the smaller models making it ideal for bedrooms.

Added to this is a new, compact wall-mounted unit design of just 798mm which fits neatly above a standard 800mm-wide door.

The MSZ-GE indoor units are engineered so that multiple indoor units can also be connected to a single MXZ Multi outdoor unit, reducing outdoor installation space considerably.

This includes the Power Multi MXZ-8A140VA outdoor model which can run up to eight indoor units simultaneously.

http://www.buildingtalk.com/news/miv/miv127.html