Common questions

What material are heat exchanger tubes made of?

What material are heat exchanger tubes made of?

Commonly, 0.625 to 1.5″ tubing used in exchangers is made from low carbon steel, Admiralty, copper, copper-nickel, stainless steel, Hastelloy, Inconel, or titanium. Tubes can be drawn and thus seamless, or welded.

What types of tubes are found on a heat exchanger?

The three types of Shell and tube heat exchangers as Follows :

  • Fixed Tubesheet – this heat exchanger type has straight tubes through the shell and are fixed at both ends.
  • U-Tube – as the name describes, the tube bundle in this heat exchanger is U shaped.

What is the most common size of tube in heat exchanger?

Tubes may range in diameter from 12.7 mm (0.5 in) to 50.8 mm (2 in), but 19.05 mm (0.75 in) and 25.4 mm (1 in) are the most common sizes.

How are heat exchanger tubes made?

Tube sheets usually are made from a round, flat piece of metal. Holes are drilled for the tube ends in a precise location and pattern relative to one another. Tube sheets are manufactured from the same range of materials as tubes.

Why Aluminium is used in heat exchanger?

Aluminium makes an ideal material for heat exchanger components due to its enviable technical capabilities and mechanical properties. These include high thermal conductivity, low density, strength at raised temperatures, and corrosion resistance.

Which metal is used in heat exchanger?

Generally, the two most commonly selected materials for heat exchangers are aluminium and copper. Both metals have the optimum thermal properties and corrosion resistance to make them ideal choices, with most of the differences being application-specific.

How many tubes are there in shell and tube heat exchanger?

waste heat boiler in power plant gas turbine are shell & tube type heat exchanger are also larger size and having 5000-12000 number of tubes.

Which heat exchanger design is the most efficient?

Plate exchanger is the most efficient due to turbulent flow on both sides. High heat-transfer coefficient and high turbulence due to even flow distribution are important. However, a plate heat exchanger regenerator is restricted to low viscosities.

How is shell and tube heat exchanger capacity calculated?


  1. The main basic Heat Exchanger equation is: Q = U x A x ΔTm =
  2. The log mean temperature difference ΔTm is: ΔTm =
  3. (T1 – t2) – (T2 – t1) = °F.
  4. T1 = Inlet tube side fluid temperature; t2 = Outlet shell side fluid temperature;
  5. ln (T1 – t2) (T2 – t1)

Which metal is better for heat transfer?

Copper has a very high thermal conductivity and is much cheaper and more available than silver, which is the best metal of all for conducting heat.

How does a shell and tube heat exchanger work?

A miniature shell-and-tube heat exchanger is designed to cool engine oil in an engine with the engine coolant (50% ethylene glycol). The engine oil at a flow rate of 0.23 kg/s enters the exchanger at 120°C and leaves at 115°C. The 50% ethylene glycol at a rate of

How big is a boiler and heat exchanger?

SIZE RANGE: Outside Diameter: 1.059 to 7.000 inches (26.9 to 177.8 mm) Wall thickness: 0.102 to 0.787 inches (2.6 to 20.0 mm) (up to 0.984 inches / 25.0 mm upon request) Boiler and Heat-Exchanger Tubes. LENGTHS: Production lengths or fixed lengths up to 56.7 feet (17.3 m) CERTIFICATES:

Which is the best stainless steel heat exchanger?

Our portfolio of duplex stainless steels is the widest on the market. Duplex stainless steel heat exchanger tubes perform exceptionally well in a variety of environments and media common in process industries, resulting in lower life-cycle costs.

Are there stainless steel heat exchanger tubes in Sandvik?

Sandvik stainless heat exchanger tubes can also be delivered as U-bent tubes *, manufactured according to the common heat exchanger standards. Our basic specification is Sandvik spec. 7-2-1179, but we can also use DIN 28179, TEMA RCB 2.31 or various customer specifications.