Header Tank Heat Exchangers

Engine coolant header tank heat exchangers for marine propulsion, gensets or stationary land-based engines.

Header Tank Heat Exchangers

Engine coolant header tank heat exchangers for marine propulsion, gensets or stationary land-based engines.

Bowman Header Tank heat exchangers are designed to cool engine jacket water in applications where air cooling is either unavailable or inappropriate, due to the nature of the installation. They are also suited to applications where high ambient temperatures are experienced, offering a more efficient and quieter solution compared to air blast systems.

Product Benefits

Compact Design

Easily integrated with the engine

Easy Product Selection

Provided quickly by our technical experts

Quiet Operation

Reduced noise when compared to air-cooled engines

Efficient Range

Designed for engines up to 1500 kW

Rapid Delivery

Extensive stockholding for fast response

Marine & Land Based Versions

Suitable for virtually any cooling fluid

Features

Quiet Operation

The unique ‘quiet zone’ design has a special de-aeration feature, whilst the large reservoir area above the tube stack eliminates the problem of air pockets or air locks getting into the cooling system.

Marine and Land Versions

Originally designed for cooling marine engines / gen-sets with sea water, Bowman header tank heat exchangers are also ideally suited for land-based engines, where fresh water is used for cooling.

Comprehensive Range

Proven worldwide in applications as diverse as marine propulsion, CHP / co-generation, engine driven pumps and automotive engine testing on engines rated up to and in excess of 1 MW.

Titanium Tube Stacks

Titanium tube stacks are available as an option in place of cupronickel. The titanium materials have a 10-year guarantee and can operate at higher flow rates, compared to standard tube stacks.

Jacket Water Connection

Hose connectors are provided on the most popular models for easy connection to the engine cooling water circuit. Counter flange plates are provided on larger models.

Easy to Maintain

Simply by removing the end covers, the tube stack assembly can be easily withdrawn from the outer ‘shell’ for routine cleaning and maintenance. A full range of replacement parts is also available.

Specification

Header Tank Heat Exchangers – Typical Performance and Dimensions

The following information offers a general guide to the performance and dimensions of our standard range of header tank heat exchangers. For more detailed information on additional configurations and specific applications, please download the product brochure. Computer aided selection software (CAS) is available to accurately select the correct heat exchanger specifically for your application.

Please contact us or your nearest stockist with the following information to receive a CAS selection:

Heat to be dissipated in kW
Engine water flow rate in l/min
Maximum engine water temperature in °C
Cooling water temperature in °C
Type of cooling water to be used (sea water, fresh water or contaminated water)

The drawings and dimensions below give general information on the product range. The drawings used are for the FH and JH products but can be used as a reference for alternative sizes in the relevant table of dimensions. For more detailed information please download the product brochure or contact us for detailed drawings.

Type	Typical Engine Power (kW)	Max Flow - 1 Pass (l/min)	Max Flow - 2 Pass (l/min)	Max Flow - 3 Pass (l/min)	Dim A (mm)	Dim B (mm)	Dim C (mm)	Weight (kg)
EH100	40	180	85	54	260	150	240	5
EH200	52	180	85	54	346	150	240	6
FH100	82	270	140	95	358	182	260	8
FH200	115	270	140	95	454	182	260	11
FH300	150	375	190	125	472	208	327	14
FH400	200	375	190	125	600	208	327	17
GH200	240	640	330	225	502	257	405	24
GH300	320	640	390	225	630	257	405	29
GH400	400	640	330	225	776	257	405	34

View Table

Type: EH100	Typical Engine Power (kW) 40	Max Flow - 1 Pass (l/min) 180	Max Flow - 2 Pass (l/min) 85	Max Flow - 3 Pass (l/min) 54	Dim A (mm) 260	Dim B (mm) 150	Dim C (mm) 240	Weight (kg) 5
Type: EH200	Typical Engine Power (kW) 52	Max Flow - 1 Pass (l/min) 180	Max Flow - 2 Pass (l/min) 85	Max Flow - 3 Pass (l/min) 54	Dim A (mm) 346	Dim B (mm) 150	Dim C (mm) 240	Weight (kg) 6
Type: FH100	Typical Engine Power (kW) 82	Max Flow - 1 Pass (l/min) 270	Max Flow - 2 Pass (l/min) 140	Max Flow - 3 Pass (l/min) 95	Dim A (mm) 358	Dim B (mm) 182	Dim C (mm) 260	Weight (kg) 8
Type: FH200	Typical Engine Power (kW) 115	Max Flow - 1 Pass (l/min) 270	Max Flow - 2 Pass (l/min) 140	Max Flow - 3 Pass (l/min) 95	Dim A (mm) 454	Dim B (mm) 182	Dim C (mm) 260	Weight (kg) 11
Type: FH300	Typical Engine Power (kW) 150	Max Flow - 1 Pass (l/min) 375	Max Flow - 2 Pass (l/min) 190	Max Flow - 3 Pass (l/min) 125	Dim A (mm) 472	Dim B (mm) 208	Dim C (mm) 327	Weight (kg) 14
Type: FH400	Typical Engine Power (kW) 200	Max Flow - 1 Pass (l/min) 375	Max Flow - 2 Pass (l/min) 190	Max Flow - 3 Pass (l/min) 125	Dim A (mm) 600	Dim B (mm) 208	Dim C (mm) 327	Weight (kg) 17
Type: GH200	Typical Engine Power (kW) 240	Max Flow - 1 Pass (l/min) 640	Max Flow - 2 Pass (l/min) 330	Max Flow - 3 Pass (l/min) 225	Dim A (mm) 502	Dim B (mm) 257	Dim C (mm) 405	Weight (kg) 24
Type: GH300	Typical Engine Power (kW) 320	Max Flow - 1 Pass (l/min) 640	Max Flow - 2 Pass (l/min) 390	Max Flow - 3 Pass (l/min) 225	Dim A (mm) 630	Dim B (mm) 257	Dim C (mm) 405	Weight (kg) 29
Type: GH400	Typical Engine Power (kW) 400	Max Flow - 1 Pass (l/min) 640	Max Flow - 2 Pass (l/min) 330	Max Flow - 3 Pass (l/min) 225	Dim A (mm) 776	Dim B (mm) 257	Dim C (mm) 405	Weight (kg) 34

Type	Typical Engine Power (kW)	Max Flow - 1 Pass (l/min)	Max Flow - 2 Pass (l/min)	Max Flow - 3 Pass (l/min)	Dim A (mm)	Dim B (mm)	Dim C (mm)	Weight (kg)
KH200	450	975	490	325	820	221	410	51
KH300	500	1050	550	400	890	235	445	55
KH400	550	1150	600	425	950	240	460	60
JH200	480	1020	510	350	800	225	420	50
JH300	510	1100	560	375	890	230	440	52
JH400	560	1200	600	400	960	240	460	58
PH200	500	1125	560	400	930	245	450	55
PH300	1500	2125	1050	700	1078	305	593	156
PH400	1800	2125	1050	700	1280	305	593	190

View Table

Type: KH200	Typical Engine Power (kW) 450	Max Flow - 1 Pass (l/min) 975	Max Flow - 2 Pass (l/min) 490	Max Flow - 3 Pass (l/min) 325	Dim A (mm) 820	Dim B (mm) 221	Dim C (mm) 410	Weight (kg) 51
Type: KH300	Typical Engine Power (kW) 500	Max Flow - 1 Pass (l/min) 1050	Max Flow - 2 Pass (l/min) 550	Max Flow - 3 Pass (l/min) 400	Dim A (mm) 890	Dim B (mm) 235	Dim C (mm) 445	Weight (kg) 55
Type: KH400	Typical Engine Power (kW) 550	Max Flow - 1 Pass (l/min) 1150	Max Flow - 2 Pass (l/min) 600	Max Flow - 3 Pass (l/min) 425	Dim A (mm) 950	Dim B (mm) 240	Dim C (mm) 460	Weight (kg) 60
Type: JH200	Typical Engine Power (kW) 480	Max Flow - 1 Pass (l/min) 1020	Max Flow - 2 Pass (l/min) 510	Max Flow - 3 Pass (l/min) 350	Dim A (mm) 800	Dim B (mm) 225	Dim C (mm) 420	Weight (kg) 50
Type: JH300	Typical Engine Power (kW) 510	Max Flow - 1 Pass (l/min) 1100	Max Flow - 2 Pass (l/min) 560	Max Flow - 3 Pass (l/min) 375	Dim A (mm) 890	Dim B (mm) 230	Dim C (mm) 440	Weight (kg) 52
Type: JH400	Typical Engine Power (kW) 560	Max Flow - 1 Pass (l/min) 1200	Max Flow - 2 Pass (l/min) 600	Max Flow - 3 Pass (l/min) 400	Dim A (mm) 960	Dim B (mm) 240	Dim C (mm) 460	Weight (kg) 58
Type: PH200	Typical Engine Power (kW) 500	Max Flow - 1 Pass (l/min) 1125	Max Flow - 2 Pass (l/min) 560	Max Flow - 3 Pass (l/min) 400	Dim A (mm) 930	Dim B (mm) 245	Dim C (mm) 450	Weight (kg) 55
Type: PH300	Typical Engine Power (kW) 1500	Max Flow - 1 Pass (l/min) 2125	Max Flow - 2 Pass (l/min) 1050	Max Flow - 3 Pass (l/min) 700	Dim A (mm) 1078	Dim B (mm) 305	Dim C (mm) 593	Weight (kg) 156
Type: PH400	Typical Engine Power (kW) 1800	Max Flow - 1 Pass (l/min) 2125	Max Flow - 2 Pass (l/min) 1050	Max Flow - 3 Pass (l/min) 700	Dim A (mm) 1280	Dim B (mm) 305	Dim C (mm) 593	Weight (kg) 190

Swimming Pool Boiler Range – Typical Performance and Dimensions

The table below enables the selection of the most appropriate heat exchanger for your swimming pool or spa. The information shows the amount of heat that can be transferred from either boiler or renewable energy sources, together with the basic dimensions of each unit. Typical pool sizes are also shown as a guide. For further information please download the product brochure, contact us or your nearest stockist.

The image above is representative of swimming pool heat exchangers for boilers rated from 12 – 100 kW.

Note – Ratings and weight are specifically relevant to the titanium versions of each heat exchanger. Download the brochure for more detailed information.

The image above is representative of swimming pool heat exchangers for boilers rated from 100 – 300 kW.

Note – Ratings and weight are specifically relevant to the titanium versions of each heat exchanger. Download the brochure for more detailed information.

The image above is representative of swimming pool heat exchangers for boilers rated from 170 – 1055 kW.

Note – Ratings and weight are specifically relevant to the titanium versions of each heat exchanger. Download the brochure for more detailed information.

Swimming Pool Boiler Range – Typical Performance and Dimensions

The images above are of swimming pool heat exchangers for renewable energy sources. The top image is representative of the 5113-3, 5113-5 and 5114-5 heat exchangers and the second image shows the 5115-5 unit.

Note – Weight provided are for the titanium versions.

More detailed product information can be found on all of the heat exchangers in the range by clicking the link for the specific product or downloading the product data sheets below.

Metric Connections – European Specification

For spas, hot tubs and small private pools

For mid sized private and commercial pools

For large commercial and public pools

For more information on JK190-5118-3 and PK190-5119-3 please contact Bowman.

For transferring heat from solar panels and heat pumps

Imperial Connections – North America

For spas, hot tubs and small private pools

For mid sized private and commercial pools

For large commercial and public pools

For more information on JK190-5110-3 and PK190-5111-3 please contact Bowman.

For transferring heat from solar panels and heat pumps

Downloads

No download content found.

Header Tank Heat Exchangers

Technical sales brochure includes product information, ratings charts, drawings and dimensions for the standard product range.

Tubular Heat Exchangers

Technical sales brochure includes product information, ratings charts, drawings and dimensions for the standard product range.

Marine Heat Exchangers

The brochure provides an overview of the products that are used for marine applications including engine and transmission coolers and heat exchangers for hydraulic deck machinery.

Swimming Pool Heat Exchangers
Technical sales brochure includes product information, ratings charts, drawings and dimensions for the standard product range.
Swimming Pool Heat Exchangers
Technical sales brochure includes product information, ratings charts, drawings and dimensions for the standard product range.
Swimming Pool Heat Exchangers
Technical sales brochure includes product information, ratings charts, drawings and dimensions for the standard product range.
Swimming Pool Heat Exchangers
Technical sales brochure includes product information, ratings charts, drawings and dimensions for the standard product range.

Related Products

Charge Air Coolers

Exhaust Gas Heat Exchangers

Hydraulic Oil Coolers

FAQs

A heat exchanger is a device for transferring heat energy from a liquid or gas, to another liquid or gas without the two ever coming into contact with each other. A typical shell and tube heat exchanger will contain a tube bundle inside an outer shell, or body. Cold water flows through these tubes, whilst hot water, or gas flows around the outside of the tubes, enabling the heat from the hot water or gas to be transferred to the colder water inside the tubes.

A good example of how the process works are swimming pools, where most are heated via a boiler, using Gas, LPG or Biomass as the energy source. In theory, the most efficient way to heat the pool would be to circulate the pool water directly through the boiler. But were this to happen, the chemicals used in the pool water to keep it safe for use, would quickly corrode and damage vital parts inside the boiler, leading to premature failure and a costly replacement.

However, by using a heat exchanger to act as an ‘interface’ between the boiler water circuit and the pool water circuit, the boiler is protected from damage and the pool water is quickly heated up to the required temperature; the pool water passing through the central ‘tube core’, whilst the hot boiler water circulates around the outside of the tubes, transferring heat energy to the pool water.

More examples of applications where Bowman heat exchangers are used.

How do I Heat my Pool Quickly?

Selecting the correct heat exchanger is very important to ensure the pool heats up quickly to desired temperature. The main issues to consider when sizing a swimming pool heat exchanger are;

Pool size – what is the water capacity? Heat exchangers are sized according to capacity, so a unit designed to heat a 80 m³ (18,000 gal) pool would be no use, if you have an 180 m³ (39,500 gal) pool.
How is it heated? Usually, the choice is either a boiler or renewable energy. If it’s renewable energy, select a heat exchanger specially designed for the lower temperature water provided by solar panels or heat pumps, as these units need less energy to heat the pool to the required temperature.
Boiler water temperature – however, most pools will be heated by boilers, so what is the temperature of the boiler water? Usually, it’s between 80 °C and 85 °C – the ideal temperature for pool heating. Some boilers are lower – around 60 °C. So, using 82 °C water, a heat exchanger providing 110 kW should heat your 180 m³ pool efficiently. But if the boiler water temperature is only 60 °C, the heat available to transfer drops to around 60 kW – a reduction of over 40%, so a larger heat exchanger would be required for the pool to achieve full temperature.
What are the water flow rates? Flow rates are vital for the heat exchanger to transfer thermal energy to the pool. If the hot water flow rate is too low, the available energy will not be passed through the heat exchanger. However, the flow rate of the pool water is equally important. People often think it is important to generate a large temperature differential between the pool water entering and leaving the heat exchanger. They are happy, if the pipework connected to the outlet of the heat exchanger is noticeably warmer than it is at the inlet. In reality, this actually reduces the efficiency of the heat transfer process! This is because the pool water flow is too low – the water remains in the heat exchanger for too long, so a much smaller volume of water is being heated to a slightly higher temperature. However, with higher flow rates, the time taken to turn over the pool water will reduce and even a small increase in the temperature of the pool water through the heat exchanger (1.5 °C for example) will have a greater effect on the heating efficiency of the pool.

More information about heat exchanger selection, read the article ‘Why doesn’t my pool heat up faster?’

How to Size a Heat Exchanger for a Swimming pool

Selecting the correct heat exchanger is very important to ensure the pool heats up quickly to desired temperature. The main issues to consider when sizing a swimming pool heat exchanger are;

Pool size – what is the water capacity? Heat exchangers are sized according to capacity, so a unit designed to heat a 80 m³ (18,000 gal) pool would be no use, if you have an 180 m³ (39,500 gal) pool.
How is it heated? Usually, the choice is either a boiler or renewable energy. If it’s renewable energy, select a heat exchanger specially designed for the lower temperature water provided by solar panels or heat pumps, as these units need less energy to heat the pool to the required temperature.
Boiler water temperature – however, most pools will be heated by boilers, so what is the temperature of the boiler water? Usually, it’s between 80 °C and 85 °C – the ideal temperature for pool heating. Some boilers are lower – around 60 °C. So, using 82 °C water, a heat exchanger providing 110 kW should heat your 180 m³ pool efficiently. But if the boiler water temperature is only 60 °C, the heat available to transfer drops to around 60 kW – a reduction of over 40%, so a larger heat exchanger would be required for the pool to achieve full temperature.
What are the water flow rates? Flow rates are vital for the heat exchanger to transfer thermal energy to the pool. If the hot water flow rate is too low, the available energy will not be passed through the heat exchanger. However, the flow rate of the pool water is equally important. People often think it is important to generate a large temperature differential between the pool water entering and leaving the heat exchanger. They are happy, if the pipework connected to the outlet of the heat exchanger is noticeably warmer than it is at the inlet. In reality, this actually reduces the efficiency of the heat transfer process! This is because the pool water flow is too low – the water remains in the heat exchanger for too long, so a much smaller volume of water is being heated to a slightly higher temperature. However, with higher flow rates, the time taken to turn over the pool water will reduce and even a small increase in the temperature of the pool water through the heat exchanger (1.5 °C for example) will have a greater effect on the heating efficiency of the pool.

More information about heat exchanger selection, read the article ‘Why doesn’t my pool heat up faster?’

How does a Swimming Pool Heat Exchanger Work?

Selecting the correct heat exchanger is very important to ensure the pool heats up quickly to desired temperature. The main issues to consider when sizing a swimming pool heat exchanger are;

Pool size – what is the water capacity? Heat exchangers are sized according to capacity, so a unit designed to heat a 80 m³ (18,000 gal) pool would be no use, if you have an 180 m³ (39,500 gal) pool.
How is it heated? Usually, the choice is either a boiler or renewable energy. If it’s renewable energy, select a heat exchanger specially designed for the lower temperature water provided by solar panels or heat pumps, as these units need less energy to heat the pool to the required temperature.
Boiler water temperature – however, most pools will be heated by boilers, so what is the temperature of the boiler water? Usually, it’s between 80 °C and 85 °C – the ideal temperature for pool heating. Some boilers are lower – around 60 °C. So, using 82 °C water, a heat exchanger providing 110 kW should heat your 180 m³ pool efficiently. But if the boiler water temperature is only 60 °C, the heat available to transfer drops to around 60 kW – a reduction of over 40%, so a larger heat exchanger would be required for the pool to achieve full temperature.
What are the water flow rates? Flow rates are vital for the heat exchanger to transfer thermal energy to the pool. If the hot water flow rate is too low, the available energy will not be passed through the heat exchanger. However, the flow rate of the pool water is equally important. People often think it is important to generate a large temperature differential between the pool water entering and leaving the heat exchanger. They are happy, if the pipework connected to the outlet of the heat exchanger is noticeably warmer than it is at the inlet. In reality, this actually reduces the efficiency of the heat transfer process! This is because the pool water flow is too low – the water remains in the heat exchanger for too long, so a much smaller volume of water is being heated to a slightly higher temperature. However, with higher flow rates, the time taken to turn over the pool water will reduce and even a small increase in the temperature of the pool water through the heat exchanger (1.5 °C for example) will have a greater effect on the heating efficiency of the pool.

More information about heat exchanger selection, read the article ‘Why doesn’t my pool heat up faster?’

EJ Bowman Newsroom

View All News

Life in the ‘deep freeze’!

Bowman CHP heat exchangers provide vital heating for the Halley VI Antarctic research station.

Cooling a Portuguese river cruiser

If you can’t stand the heat – get a Bowman heat exchanger! How Bowman heat exchangers have solved a major cooling headache for a Portuguese river cruising company.

Energy-efficient heating for National Lido of Wales

Bowman heat exchangers are delivering 21st century reliability and efficiency to an historic open air pool complex in South Wales.

Driving down the cost of grain drying

A new ‘closed loop’ grain drying system, using Bowman heat exchangers has significantly reduced energy costs and improved efficiency in Finland.

View All News

Life in the ‘deep freeze’!

Bowman CHP heat exchangers provide vital heating for the Halley VI Antarctic research station.

Cooling a Portuguese river cruiser

If you can’t stand the heat – get a Bowman heat exchanger! How Bowman heat exchangers have solved a major cooling headache for a Portuguese river cruising company.

Energy-efficient heating for National Lido of Wales

Bowman heat exchangers are delivering 21st century reliability and efficiency to an historic open air pool complex in South Wales.

Driving down the cost of grain drying

A new ‘closed loop’ grain drying system, using Bowman heat exchangers has significantly reduced energy costs and improved efficiency in Finland.

View All News

Get in Touch

If you have a specific enquiry or would like to talk to one of our technical sales engineers, you can contact us by phone or email, using the contact details below. For more general enquiries, simply fill in and return the contact form for a fast response.

Tel: +44 (0)121 359 5401
E-mail: [email protected]

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A network of authorised, international Bowman distributors, who hold product stocks and provide local service, is also available.

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All Products

Charge Air Coolers

Exhaust Gas Heat Exchangers

Fuel Coolers

Header Tank Heat Exchangers

Hot Tub Heat Exchangers

Hydraulic Oil Coolers

Inline Plate Type Heat Exchangers

Marine Engine Coolers

Marine Transmission Oil Coolers

Electric and Hybrid Coolers

Shell and Tube Heat Exchangers

Stainless Steel Heat Exchangers

Swimming Pool Heat Exchangers

All Applications

Automotive Testing

CHP / Co-Generation

Engine Cooling Solutions

Electric & Hybrid Marine

Industrial Hydraulics

Marine Hydraulics

Marine Propulsion

Hot Tubs / Spas

Swimming Pool

Header Tank Heat Exchangers

Header Tank Heat Exchangers

Product Benefits

Compact Design

Easy Product Selection

Quiet Operation

Efficient Range

Rapid Delivery

Marine & Land Based Versions

Features

Quiet Operation

Marine and Land Versions

Comprehensive Range

Titanium Tube Stacks

Jacket Water Connection

Easy to Maintain

Specification

Header Tank Heat Exchangers – Typical Performance and Dimensions

Swimming Pool Boiler Range – Typical Performance and Dimensions

The image above is representative of swimming pool heat exchangers for boilers rated from 12 – 100 kW.

The image above is representative of swimming pool heat exchangers for boilers rated from 100 – 300 kW.

The image above is representative of swimming pool heat exchangers for boilers rated from 170 – 1055 kW.

Swimming Pool Boiler Range – Typical Performance and Dimensions

The images above are of swimming pool heat exchangers for renewable energy sources. The top image is representative of the 5113-3, 5113-5 and 5114-5 heat exchangers and the second image shows the 5115-5 unit.

More detailed product information can be found on all of the heat exchangers in the range by clicking the link for the specific product or downloading the product data sheets below.

Metric Connections – European Specification

Imperial Connections – North America

Downloads

Header Tank Heat Exchangers

Tubular Heat Exchangers

Marine Heat Exchangers

Related Products

FAQs

FAQs

EJ Bowman Newsroom

Related Articles

Get in Touch

Local Distributors