General Information About Heat Exchangers
Our industrial service department specializes on heat exchangers sales and service. There are two major types of heat exchangers involved (HE): Brazed Plate Heat Exchangers (BPHE) and Plate and Frame Heat Exchangers (PFHE).
BPHE:
TYPES:
- Single wall HE – regular product for regular applications. Includes liquid to liquid units with threaded connections, evaporators/condensers with soldering connections for refrigerant use
- Double wall HE – special product for drinking water/domestic water applications where no chance of liquids contamination is allowed (Mandatory in some US states or Canadian provinces - check local Code). Also used in extreme conditions – for high and peak pressures when pressure jump is possible
NAMING :
BPHE NAME presents some coded information:
BL – means “Brazed plate”, next two digits show heat exchange area per 1 plate, next two digits show plate quantity. SAMPLE: BL14-10. Meaning: brazed plate heat exchanger, 0.014 m², 10 plates.( Total heat exchange area – 0.014*10=0.14 m²)
Index DW means “Double wall”. SAMPLE: BL32DW-40. Meaning: double wall brazed plate heat exchanger, 0.032 m² per plate, 40 plates. (Total area: 0.032*40=1.28 m²)
R in the end means HE with soldering connections for one side – for refrigerant use. (SAMPLE: BL50-22R. Means: brazed plate unit, 0.05 m² per plate, 22 plates, with one side soldering connections for refrigerant)
“R - units” always have wider connection for water side (1-1/4’’ NPT)
"C - units" - condensers
The rest of special marks don’t have relation to selection. They are no more than technical marks for production purposes.
FAMILIES:
Compact class: BL14, BL14DW and BL20 all units have 3/4’’ NPT connections. 100 plates max.
Medium class: BL26, BL32DW – 1’’ NPT connections, BL30 – 1-1/4’’ NPT connections. 100 plates max
Medium long : BL50 – 1’’ NPT. 100 plates max
Large: BL95, BL100, BL200 (2’’ NPT or specific pre-ordered connection type) 200 plates max
PFHE:
We sell parts only and provide cleaning service
- Plates – Stainless Steel 316 or 304 for regular applications, Titanium – for sea water or pool applications. For all manufacturers.
- Gaskets – NBR rubber for temperatures under 110°C, EPDM rubber for temperatures under 160°C. For all manufacturers.
- Service – usually required after 3-5 years. More about HE service