Tempco Blog articles

Shell and tube heat exchangers…distinguishing

22/06/2016

Lately we have made some particular heat exchangers.

This is an application in the chemical, for temperature control of small laboratory reactors. Usually for these applications we use plate heat exchangers…but in this case because of some special needs we design a special tube bundle solutions.

Indeed the customer had need to pass the process fluid inside the heat exchanger, which for corrosion resistance implications, must necessarily be made of titanium. At the same time due to chemical resistance we dont find suitable gaskets. The size of the heat exchanger are so small that an “all welded” would be extremely expensive, so we made small shell and tube titanium exchangers.

For the cooling section, it has moderately cold water, and wanting to achieve a similar temperature level in the reactor jacket, we have realized a heat exchanger with very particular tube bundle, which allows to obtain the required temperatures, despite the capacity in very small dimensions.

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Metals and fluids, avoiding corrosion

27/05/2016

Choosing the right metals in engineering and construction of industrial machinery and equipments, is essential a proper evaluation of corrosion resistance of materials in contact with different fluids.

Here below is a corrosion resistance table based on results of general corrosion laboratory tests, involving materials and fluids to understand damages occurring due to unsuitable material selection in thermal machines, employed in thermal energy management and process industry, such as heat exchangers and thermoregulating units, as well as in general engineering equipments working with fluids, in sectors such as food and beverage, chemical, power generation and oil & gas facilities.

Different metals are here evaluated, such as Stainless steels, bronze and cast iron, for a wide range of elements, fluids and aggressive or potentially corrosive substances.

More datasheet and download data supporting installation and maintenance operations are available in the Resources section of our Tempco website.

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Heat pumps, how do they work

13/05/2016

From the pen of Fabrizio Gallelli, directly on the italian language site www.ingegneri.info, here’s an interesting article on the topic of Heat pumps, explaning how this kind of thermal machines work, achieving energy efficiency using a combination of a compressor, a condenser, an expansion valve and an evaporator.

The topic is mostly referred to civil and residential conditioning and HVAC, more than to chillers for industrial refrigeration. Anyway it helps in a clear way on the kinds of heat pumps existing, and working principles of this coolers/heaters.

Heat pumps provide heat from a cold source, ground, water or environment air, absorbing heat from the cold source employing electric power and transferring thermal energy to a heat sink. A heat pump can be three to four times more efficient than simple electrical resistance heaters.

The cycle can also be reversible obtaining residential conditioning and cooling during summer.

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70 bar, 100 bar, 140 bar…high pressure?

04/02/2016

The most recent applications in the field of refrigeration, as well as a whole series of installations in industrial field, require efficient heat exchangers and especially that they are able to resist very high working pressures.

I speak for example of refrigeration systems that use as refrigerant R744, simply CO2, or of heat recovery systems with superheated water at 200 ° C.

The heat exchangers of the series TPLATE B – C, reach working pressure of 70 bars, 100 bars, 140 bars in the various embodiments and possible to operate at temperature levels so far reserved at more expensive and sophisticated process exchangers.

Compact size, excellent performance of heat transfer and low pressure drop are the three fundamental characteristics. The quality and durability of the C series is confirmed by tests carried out up to the burst test pressure of 650 bar and the test cycle of over 100,000 cycles.

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TREG OHT BTB custom thermoregulating units.

25/01/2016

The requirement coming from many machine manufacturers is to integrate the systems of temperature control, inside of their equipment.

Tempco always goes to the standard range of temperature control units, or with its structural and bodywork protection, the series BTB, which provides in practice the realization of the same control, skid adaptable to the needs of installation of the machine manufacturers.

flexographic
Pharmaceutical chemicals
Paper Industry
Rubber and plastic
textile industry

we provided units in all these areas and many others by customizing the concept of the standard thermoregulating units.

These are solutions that are typically reserved for manufacturers who need a lot of repetitive units.

During the last year, the technical department of Tempco has worked intensively with the design office, in order to extend the benefits of these solutions also to manufacturers who have decidedly contained amounts of machinery, measured in units / year, all this thanks to a study to be able to make standard solutions more special.

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Brazed plate exchangers, water is always safe?

14/01/2016

Strange question? … it is not always the water is “just water”.

Sometimes customers fight versus scaling or corrosion issue and say: “but it’s water!!!”.

To shed light on this interesting subject, here are a interesting table, prepared by our technical department, which offers a number of parameters to be controlled in the water passing over the brazed plate heat exchangers.

Water quality TPLATEB

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Chocolate…recovery!!

07/01/2016

Yes you are right and in the right place…usually we speack about energy recovery, steam, hot oil, superheated water…today we feel chocolate taste.

Our customer make lines to cover chocolate icecream and ask to our technical department a way to recover dropping chocolate.

Italian creativity helped by TCOIL, give us the economic and efficient solution.

A dimple jacket heat exchanger, flooded with hot water with food surface treatment, can recover the chocolate drop from icecream lines.

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Leakage localization in Plate Heat Exchangers

18/12/2015

We already discussed the importance of antifreeze a few weeks ago, in order to prevent piping and hydraulic circuits damages in our cooling plants.

Another precious technical topic in the Download section of the Tempco site refers to Localization of leakage in Plate heat exchangers.
Essential because fluids leakage in the plate pack compromises the correct working conditions of heat exchangers.

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Localizzare perdite in uno Scambiatore a piastre

Abbiamo parlato già dell’importanza dell’antigelo poche settimane fa, onde prevenire danni alle tubazioni e ai circuiti idraulici dei nostri impianti di raffreddamento.

Un altro prezioso documento nella sezione Download del sito Tempco riguarda Come localizzare le perdite in uno Scambiatore di calore a piastre.
Fondamentale, in quanto perdite di liquidi nel pacco piastre compromettono seriamente il corretto funzionamento dello scambiatore di calore.

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Dimple plate jacket, from chemical and beyond

24/11/2015

We often discussed about dimple plate jacket exchangers, the T COIL series of Tempco heat exchangers for clamp-on or immersion application.

Dimple plate jacket exchangers offer a very interesting construction, achieving high thermal transfer efficiency and custom flexibility in shape and geometries.

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