Exhaust Gas Heat Exchangers

Exhaust gas heat exchangers are designed to recover waste heat energy from the exhaust stream of reciprocating engine powered generating sets.

Bowman is the leading UK manufacturer of Exhaust Gas Heat Exchangers, with a comprehensive range of highly efficient models suitable for engines powered by biogas, diesel or natural gas, in applications up to 1 MW, with heat recovery potential from 9.5 kW to 673 kW.

Product Benefits

  • Compact design Saves space. Simplifies installation
  • Thermal calculations Provided quickly by our technical experts
  • Premium quality UK manufactured, robust and reliable
  • Comprehensive range Suitable for engines up to 1 MW
  • Rapid delivery Extensive stockholding for fast response

Shell and Tube Design

Fluid enters the outer ‘shell’ of the unit and travels over a series of specially designed baffles, transferring energy from the exhaust gases which travel through the tubes of the heat exchanger.

Stainless Steel

Fully welded construction using 316 stainless steel ensures maximum reliability and durability of the unit, when handling extreme exhaust gas temperatures.

Automated Tube Welding

The automated tube end welding process of the tube core ensures ultra-high quality, whilst every unit is 100% inspected for structural integrity.

Quality

Bowman exhaust gas heat exchangers are renowned for their high quality, which translates into long-life durability, even where more aggressive fuels, such as biogas, are used.

Right Angle End Covers

In addition to offering a more compact packaging solution, right angle end covers often reduce system pipework requirements and enable the tubes to be cleaned, without disturbing the pipework.

Comprehensive Specification

Bowman exhaust gas heat exchangers are fitted with a pressure relief valve which automatically activates, should the pressure exceed 4 bar, to prevent excess pressure build up.

Exhaust Gas Heat Exchangers – Typical Performance and Dimensions

The following information offers a general guide to the performance and dimensions of our standard range of exhaust gas heat exchangers. For more detailed information on additional configurations and specific applications, please download the product brochure. Computer aided selection software (CAS) can be used 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:

  • Exhaust gas mass flow rate
  • Maximum allowable pressure drop
  • Exhaust gas inlet and desired outlet temperature
  • Cooling water source, temperature and flow rate

Note – Water pressure must not exceed 4 bar at 110 °C and gas inlet pressure should be below 0.5 bar at 700 °C.

The image above is representative of Exhaust Gas Heat Exchanger models from 2-25 to 6-60.

The figures given in the table are based on a natural gas engine using a gas inlet temperature of 600 °C and water inlet temperature of 80 °C and the dimensions in the table below refer to standard units fitted with straight end covers – for alternative configurations please download the brochure or contact us for further information.

ModelTypical Engine Power (kW)Mass Flow (kg/min)Pressure Drop (kPa)Gas Outlet (°C)Heat RecoveryDim A (mm)Dim B (mm)Dim C (mm)Weight (kg)
2-25161.21.62109.575055060.310
2-32161.21.817011.592872860.312
3-32322.41.21981996071888.918
3-40322.41.316321116292088.920
3-60322.41.6116231670142888.927
4-32604.51.019936990698114.325
4-40604.51.2164391192900114.329
4-60604.51.41164317001408114.340
5-32906.71.0195551030688141.336
5-40906.71.2161591232890141.339
5-60906.71.41156517401398141.351
6-3214010.51.0197851080668168.348
6-4014010.51.2163921282870168.355
6-6014010.51.411710117901378168.372
The image above is representative of Exhaust Gas Heat Exchanger models from 8-32 to 15-60.

The figures given in the table are based on a natural gas engine using a gas inlet temperature of 600 °C and water inlet temperature of 80 °C and the dimensions in the table below refer to standard units fitted with straight end covers – for alternative configurations please download the brochure or contact us for further information.

ModelTypical Power (kW)Mass Flow (kg/min)Pressure Drop (kPa)Gas Outlet (°C)Heat Recovery (kW)Dim A (mm)Dim B (mm)Dim C (mm)Weight (kg)
8-3225018.71.01991511150648219.089
8-4025018.71.21641631352850219.098
8-6025018.71.411718018601358219.0125
10-3240030.01.12002411230608273.0132
10-4040030.01.21642621432810273.0146
10-6040030.01.411628919401318273.0185
12-3260045.01.11993621330538324.0190
12-4060045.01.21643921532740324.0208
12-6060045.01.511743220401248324.0268
15-3295070.01.02005631468538406.4288
15-4095070.01.11656101670740406.4319
15-6095070.01.411667321801248406.4404