| A compact Spirax Sarco EasiHeat™ steam-to-hot water system is proving to be a vital component in an innovative refurbishment project to help Harrogate Hospital save energy and improve patient comfort in its hydrotherapy unit. By delivering improved heat recovery, temperature and humidity control, the scheme is expected to save over £2,000 per year in heating bills. The new measures are also expected to save almost 300 tonnes of CO2 emissions over the 15-year life of the plant. The EasiHeat system provides hot water to an integrated Calorex Delta 10 unit, which controls both the temperature of the pool and the temperature and relative humidity of the air in the hydrotherapy and swimming pool. The Calorex system incorporates heat exchangers, an air handling unit and a heat pump. The heat pump recovers energy from excess moisture in the air above the pool to provide up to 25% of the heating energy needed in the pool room. The rest is provided by hot water from the EasiHeat system. The system maintains the pool temperature at between 34 and 36oC and conditions the air to a comfortable 30oC and 60% Relative Humidity. The EasiHeat system was supplied as a compact, skid-mounted assembly, complete with all the necessary ancillary equipment. At its heart is a plate heat exchanger, which is more responsive and easier to control than bulkier shell-and-tube versions. The Spirax Sarco unit was chosen because it can use plant steam to provide a reliable supply of on-demand hot water at a precise temperature. “We need rapid availability and close control of low-temperature hot water at a constant 82oC,” says Bob Howie, Capital Design and Project Manager. “The plate heat exchanger provides very good close control and hot water on-demand. It also has a much smaller footprint than other heat exchangers, freeing up space in the plant room.” Another reason to opt for a heating system based on steam was the ready supply of plant steam, which was previously used in the shell-and-tube calorifier that heated the pool before the refurbishment. As well as the new pool room systems, the refurbishment also includes a second air handling unit bringing fresh air into the adjacent rest area, while an integrated building control system monitors and optimises the energy performance of the entire hydrotherapy unit. All the new systems are designed to comply with the latest recommendations for hydrotherapy units laid out in NHS Health Technical Memorandum Health Building Note 8 for Facilities for Rehabilitation Services. “These regulations weren’t around when the hospital was built in the mid-1970s, because no one worried then about climate http://www.pandct.com/media/shownews.asp?ID=25555change,” says Mr. Howie. |
Wednesday, June 30, 2010
Spirax Sarco heat exchanger helps Harrogate cure high hydrotherapy heating bills
Friday, May 21, 2010
Wide plate heat exchangers avoid blockages
Gasketed, wide gap plate heat exchangers solve problems of blockages and contamination encountered when handling viscous fluids, solids or slurries.
The problems of blockages and contamination encountered handling viscous fluids, solids or slurries can be solved by the range of wide gap plate heat exchangers developed by SWEP PHE.Gasketed plate heat exchangers can virtually eliminate downtime for cleaning through their free-flowing operation.
With a draw depth two to five times greater than conventional plates, the proven plate and frame design has been adapted to provide unrestricted passage of coarse particles or fluids that contain fibres.
Wide gap heat exchangers are available in a wide/narrow configuration when only one fluid requires a wide gap and a medium/medium configuration when both fluids need additional flow space.
The wide gap plate design will also accommodate the high volumetric flows of low pressure steam applications.
Moreover, with heat transfer areas of 5.3, 9.0 and 16.8ft2, wide gap plates transfer heat more efficiently, typically from harsh waste streams in the pulp, paper, sugar processing, chemical and textile industries.
The units also benefit from NBR or EPDM gaskets, allowing maximum temperatures of up to 270degF or 320degF respectively.
With a standard plate thickness of 0.8mm, with a 1mm option available, the plates are manufactured from durable and anti-corrosive materials stainless steel or titanium, and are available in Hastelloy for the most arduous duties as part of the Superchanger range.
Alan Ashton, General Manager for SWEP, says: "Our global expertise in the heat exchange market has enabled us to design a solution that is not only highly efficient, but which saves time, space and money for the processing industry.
http://www.manufacturingtalk.com/news/swp/swp102.html
Friday, May 7, 2010
Air Cooled Heat Exchangers - Things You Need to Know
Air cooled heat exchangers are no more than 1 kind of heat exchange device from a large list of heat exchangers. Fundamentally, heat exchange devices are devices that are exclusively created for supporting the discharge of heat from a particular volume of fluid in the direction of the other. To understand more, consider the common home appliances at your residence, like the refrigerators, air conditioners, as well as your regular car radiator. They're simple examples of heat exchangers.
Now let's take a look at air cooled heat exchangers. Generally, these are used in industries which have a process system which produces substantial heat which need to be dissipated, specially if there's no home or local usage for it. Air coolers is able to perform exclusive of any cooling water from an adjacent or supporting cooling tower.
When should this equipment be used? The reply to that is if the outlet temperature is more than 20 degree Fahrenheit or -6.67 degree Celsius higher than the upper limit of the anticipated ambient air temperature. Moreover, don't let yourself be fooled by the negative symbol of the Celsius unit. Air coolers can be utilised with nearer approach temperatures, nonetheless it has again and again come to be costly when measured up to a combination of a cooling tower and a water-cooled exchanger.
Other than the appliances and cars, remember there are additional functions for air cooled heat exchangers. These uses are visible in a variety of industrial sectors, a few of which include refineries, the upstream production, and petrochemical facilities. Additionally, it's also possible to use air coolers on other conditions which have high temperatures, high pressure, acidic fluids and environments. To be more specific, air coolers are generally employed and set up in the everyday gas and oil refineries; gas storage facilities; compressor stations for oil pipelines; plants produces polychlorvinyl, polyethylene, glass fiber, biplastic; by-product coke plants and ammonia transportation and handling plants.
Apart from the various functions and uses of air coolers, you need to understand something about its construction. Fortunately, I will give that to you. The most popular air cooled exchanger that is used for processing purposes are consists of a finned-tube bundle that are built inside a rectangular box headers on both ends of the tubes. The chilling air is supplied by two or more fans. In general, the air blows upwards via a horizontal tube bundle or sideward, for vertical tube bundles. The installed fans is usually either induced or forced draft. This also is determined by whether the air is pushed or pulled all the way through the tube bundle. The air is directed by the plenum chamber, furthermore, the chamber encloses the space between the fans as well as the tube bundle. And all of the parts pointed out may be built up on legs or a pipe rack when assembled. And before I forget, the fan drive assemblage is sustained with a steel mechanical drive support system. The support system will generally be consisted of a vibration switch on every fan. The switches are designed to turn off a fan which has a problem, without having human intervention.
To comprehend the inside and out of air cooled heat exchangers generally is easier said than done, and it's even more difficult when a person has simply no foundation on machines or mechanical terminology. Though the question still remains, why are these preferred than other coolers. First of all, they're cheaper to maintain when compared with some other chemical using coolers. Secondly, it can easily be installed. Last but not least, air cooled heat exchangers are the most environmental friendly method available up to now.
http://www.gather.com/viewArticle.action?articleId=281474978211658
Now let's take a look at air cooled heat exchangers. Generally, these are used in industries which have a process system which produces substantial heat which need to be dissipated, specially if there's no home or local usage for it. Air coolers is able to perform exclusive of any cooling water from an adjacent or supporting cooling tower.When should this equipment be used? The reply to that is if the outlet temperature is more than 20 degree Fahrenheit or -6.67 degree Celsius higher than the upper limit of the anticipated ambient air temperature. Moreover, don't let yourself be fooled by the negative symbol of the Celsius unit. Air coolers can be utilised with nearer approach temperatures, nonetheless it has again and again come to be costly when measured up to a combination of a cooling tower and a water-cooled exchanger.
Other than the appliances and cars, remember there are additional functions for air cooled heat exchangers. These uses are visible in a variety of industrial sectors, a few of which include refineries, the upstream production, and petrochemical facilities. Additionally, it's also possible to use air coolers on other conditions which have high temperatures, high pressure, acidic fluids and environments. To be more specific, air coolers are generally employed and set up in the everyday gas and oil refineries; gas storage facilities; compressor stations for oil pipelines; plants produces polychlorvinyl, polyethylene, glass fiber, biplastic; by-product coke plants and ammonia transportation and handling plants.
Apart from the various functions and uses of air coolers, you need to understand something about its construction. Fortunately, I will give that to you. The most popular air cooled exchanger that is used for processing purposes are consists of a finned-tube bundle that are built inside a rectangular box headers on both ends of the tubes. The chilling air is supplied by two or more fans. In general, the air blows upwards via a horizontal tube bundle or sideward, for vertical tube bundles. The installed fans is usually either induced or forced draft. This also is determined by whether the air is pushed or pulled all the way through the tube bundle. The air is directed by the plenum chamber, furthermore, the chamber encloses the space between the fans as well as the tube bundle. And all of the parts pointed out may be built up on legs or a pipe rack when assembled. And before I forget, the fan drive assemblage is sustained with a steel mechanical drive support system. The support system will generally be consisted of a vibration switch on every fan. The switches are designed to turn off a fan which has a problem, without having human intervention.To comprehend the inside and out of air cooled heat exchangers generally is easier said than done, and it's even more difficult when a person has simply no foundation on machines or mechanical terminology. Though the question still remains, why are these preferred than other coolers. First of all, they're cheaper to maintain when compared with some other chemical using coolers. Secondly, it can easily be installed. Last but not least, air cooled heat exchangers are the most environmental friendly method available up to now.
http://www.gather.com/viewArticle.action?articleId=281474978211658
Saturday, April 10, 2010
Buy American Unveils Its Industrial Heat Exchangers or Commercial Heaters Directory
Buy American, an online blog-based guide for the manufacturing community published by IndustrialLEADERS.com announced today a new heat processing equipment and systems marketplace. The company said in a press release to Arizona newspapers the site includes offerings for heat exchangers, commercial heat processing systems, industrial heaters, portable heat systems, space heaters and allied products at http://www.industrialsaver.com/classifieds/index.php/cat/193 The company indicated the site is an integration of a marketplace, directory and reference guide for those buying and selling heat processing equipment.
In a related story, Buy American also partnered with ForeignTRADEX to publish a new version of its grinding tools and equipment directory connecting companies with manufacturers and suppliers of cut-off tools, metal chippers, grinding machine, deburring machine bench, discs, belts, sanders, surface grinders and allied items at http://www.foreigntradeexchange.com/suppliers/grinding_equipment.html The company said numerous suppliers on the site offer low financing and bulk order incentives on its entire line of grinding machines, tools, equipment and accessories.
According to Frank Wallace, spokesman for Buy American, the heat processing and grinding equipment sites were both designed to helps companies source such products more efficiently in Arizona as well as across the nation and overseas. “No matter how large or small a manufacturing facility may be, Buy American and IndustrialLEADERS offers the ideal solution to find the right product for their heating, grinding and other industrial or commercial application.” He added, “If a user cannot find the solution they need in anyone of Buy American's publications, the company will personally assist them to find the ideal product.”
http://pr-usa.net/index.php?option=com_content&task=view&id=370936&Itemid=32
In a related story, Buy American also partnered with ForeignTRADEX to publish a new version of its grinding tools and equipment directory connecting companies with manufacturers and suppliers of cut-off tools, metal chippers, grinding machine, deburring machine bench, discs, belts, sanders, surface grinders and allied items at http://www.foreigntradeexchange.com/suppliers/grinding_equipment.html The company said numerous suppliers on the site offer low financing and bulk order incentives on its entire line of grinding machines, tools, equipment and accessories.
According to Frank Wallace, spokesman for Buy American, the heat processing and grinding equipment sites were both designed to helps companies source such products more efficiently in Arizona as well as across the nation and overseas. “No matter how large or small a manufacturing facility may be, Buy American and IndustrialLEADERS offers the ideal solution to find the right product for their heating, grinding and other industrial or commercial application.” He added, “If a user cannot find the solution they need in anyone of Buy American's publications, the company will personally assist them to find the ideal product.”
http://pr-usa.net/index.php?option=com_content&task=view&id=370936&Itemid=32
Tuesday, March 30, 2010
Heat Exchangers - A Global Market Perspective - New Market Report Published
New report provides detailed analysis of the Industrial market
With mainstay segments flaunting a broad base, the global heat exchangers market is set to thrive on replacement demand emerging from frequent upgrades and technology attunements. On the end-use front, the industry is witnessing a rapid shuffling of shares with emerging applications in environmental remediation, propped by tightening legislation, increasingly outnumbering the traditional applications within chemical, fuel processing, and power generation sectors. Rising energy prices are expected to be among the major drivers of heat exchanger market growth in the near future.
These and other market data and trends are presented in "Heat Exchangers: A Global Market Perspective". Our reports are designed to be most comprehensive in geographic coverage and vertical market analyses...
http://www.officialwire.com/main.php?action=posted_news&rid=116796
Modine announces collaboration on heat exchanger technology
RACINE - Modine Manufacturing Co. Tuesday announced a collaboration with Sierra SpA, a European producer of finned pack heat exchangers for use in civil and industrial applications.
Modine said the collaboration will provide Modine's patented Parallel Flow microchannel heat exchanger technology within Europe.
Racine-based Modine said the relationship will enable both Modine and Sierra to expand their capabilities within the European commercial heating, ventilation, air conditioning and refrigeration market.
Modine, with fiscal 2009 revenues of $1.4 billion, specializes in thermal management systems and components. Its products are used in light-, medium- and heavy-duty vehicles, heating, ventilation and air conditioning equipment, off-highway and industrial equipment, refrigeration systems, and fuel cells.
The company employs approximately 6,000 people at 32 facilities worldwide in 15 countries. For more information about Modine's Commercial Products Group, visit http://www.ModineHVAC.com.
http://www.journaltimes.com/news/local/article_2574d6e6-368c-11df-8be9-001cc4c03286.html
Modine said the collaboration will provide Modine's patented Parallel Flow microchannel heat exchanger technology within Europe.
Racine-based Modine said the relationship will enable both Modine and Sierra to expand their capabilities within the European commercial heating, ventilation, air conditioning and refrigeration market.
Modine, with fiscal 2009 revenues of $1.4 billion, specializes in thermal management systems and components. Its products are used in light-, medium- and heavy-duty vehicles, heating, ventilation and air conditioning equipment, off-highway and industrial equipment, refrigeration systems, and fuel cells.
The company employs approximately 6,000 people at 32 facilities worldwide in 15 countries. For more information about Modine's Commercial Products Group, visit http://www.ModineHVAC.com.
http://www.journaltimes.com/news/local/article_2574d6e6-368c-11df-8be9-001cc4c03286.html
Monday, March 15, 2010
Swap metal heat exchangers for plastic
HEAT exchangers could one day be made from polyethylene after engineers at the Massachusetts Institute of Technology found a way to make it conduct heat very efficiently in one direction.
Carrying heat in one direction is not a property associated with polymers, or even metals used to make heat exchangers used today, which conduct heat equally well in all directions. The MIT team found that they could make heat travel in a straight line along a polymer fibre if they could make all the molecules in the fibre line up unidirectionally, rather than forming a jumbled mass as is the norm.
In the first stage of the production process, the team slowly drew a polyethylene fibre out of a heated solution using the finely controllable cantilever of an atomic force microscope. In the second stage it was heated once more to restretch it. “Once it solidifies at room temperature, you can't do any large deformation,” says lead author Sheng Shen, “so we heat it up twice.”
The resulting fibre was around 300 times more thermally conductive than normal polyethylene making it the highest thermal conductivity ever seen in any polymer. The team says this outperforms almost half of all pure metals, including iron and platinum.
The team will now work to scale up its production process, which has so far only produced individual fibres. The team thinks modified polyethylene could eventually replace the metals used in heat exchanger fins, solar hot water collectors and microchips.
http://www.tcetoday.com/tcetoday/NewsDetail.aspx?nid=12583
Carrying heat in one direction is not a property associated with polymers, or even metals used to make heat exchangers used today, which conduct heat equally well in all directions. The MIT team found that they could make heat travel in a straight line along a polymer fibre if they could make all the molecules in the fibre line up unidirectionally, rather than forming a jumbled mass as is the norm.
In the first stage of the production process, the team slowly drew a polyethylene fibre out of a heated solution using the finely controllable cantilever of an atomic force microscope. In the second stage it was heated once more to restretch it. “Once it solidifies at room temperature, you can't do any large deformation,” says lead author Sheng Shen, “so we heat it up twice.”
The resulting fibre was around 300 times more thermally conductive than normal polyethylene making it the highest thermal conductivity ever seen in any polymer. The team says this outperforms almost half of all pure metals, including iron and platinum.
The team will now work to scale up its production process, which has so far only produced individual fibres. The team thinks modified polyethylene could eventually replace the metals used in heat exchanger fins, solar hot water collectors and microchips.
http://www.tcetoday.com/tcetoday/NewsDetail.aspx?nid=12583
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