Their performance and reliability remains unsurpassed. Ever conscious of changing markets LOWE has introduced a wider and upgraded range of Sample Coolers, retaining many of the outstanding features whilst providing a more cost effective solution. LOWE now offer a range of 7, 8 and 9 series Sample Coolers.
Large heat capacity: Very large heat transfer area per unit cost with Pressure and Temperature ratings up to 538 Deg C at 333 bar incorporating non asbestos gasket. Designed to cool steam, water, oil or other process samples for either manual grab or on-line continuous analysis.
With very low cooling water pressure drop, allowances for coil & shell fouling at full process conditions resulting in a safely predictable performance with high sample flow rates and minimum coil vibration. Short sample residence time reduces the build up of solids and scale.
Counter-flow cooling: Sample outlet temperature closely approaches the coolant inlet temperature, optimising the use of baffles within the cooler shell to produce full counter-flow cooling and low coolant flow rates.
Coils designed to minimise thermal shock: Reducing stress corrosion and extending coil life. This unique feature has been retained for this new range.
Shell removable: The shell is easily removed without disconnecting the sample lines, for inspection or maintenance purposes to the most commonly fouled area.
Sample coil stainless steel as standard: A single continuous coil with no joints within the cooler minimises maintenance. Optional heat-treated coils, reduces the stresses and increases the coil life. Alternative materials to stainless steel are available ie Inconel, Monel, Incoloy 825.
Compact design: Can be mounted in varying configurations to suit the user.
Shell Relief Valves: Available from Thermal Relief Valve to Full Flow protection, if required against the unlikely event of simultaneous guillotine coil failure and coolant failure.
Alternative designs: Special sample coolers can be designed for non standard applications where necessary including Low Pressure Steam / Water; Multi Steam samples; Multi element Isothermal Bath Type; High Sample Flow and closer approach tolerances.
Boiler Sample Cooler Selection: Sample coolers are only part of the conditioning system and all aspects of the process, siting and transfer pipe-work etc should be taken into account when selecting the appropriate cooler.
APPLICATION NOTES
SAMPLE COOLER SELECTION
- For manual grab sampling select a sample cooler model that is within the process and coolant criteria. The cooler may become fouled over a period of time depending on the coolant quality and this will impair the performance. Regular maintenance should be carried out after experience of local conditions.
- If Secondary cooling is necessary the Primary cooler should be large enough to reduce the sample temperature to within 10 °C of the Primary coolant inlet temperature. The closer the approach to the Primary coolant inlet temperature will reduce the heat load on the secondary cooling system.
- The secondary cooler approach temperature should not exceed 2 °C.
- For steam sample applications use a cooler model with a surface area of at least 0.25 M heat transfer area.
- In steam sample which are less than 40 barA at the process, the sample flow may be limited by the pressure drop in the overall system.
- The superheat within the sample is assumed to be lost to ambient during transit to the cooler.
- For samples which are other than Steam or Water, please contact this office for specific conditions and applications.
- If Chlorides are present in the sample or coolant please contact this office to check the suitability or available alternative materials.