PIROBLOC: electrical steam boiler

Showing posts with label electrical steam boiler. Show all posts

Heat transmission fluids

Following with the thematic developed in our last blogs of year 2009 and to start correctly the present new year, we will speak now about the heat transmission fluids, being the most common:

Water
Steam
Smoke or stack gases
Glycerin
Thermal oil

WATER and STEAM. The water used in hot water boilers and steam ones (to produce this one) normally needs a previous treatment of decalcification, etc. to preserve the life of the boiler in which they are used, besides, sometimes, continuous purges of muds and foam that the process generates, which derives in energy losses. On the other hand, it usually is at the disposal of the users with facility and in abundance.

Basic characteristics: The water changes of state under atmospheric pressure at 100ºC, reason why if you wish to work with it over that temperature, you will have to increase the pressure, obtaining a product called High Pressure Hot Water.

Something similar it happens to the steam, with a result of the pressure-temperature saturation curve of steam (as example: 150ºC 5 bar a), obtaining in this case High Pressure Steam.

The design of the boilers can be PIROTUBULAR or ACQUATUBULAR, based on what is circulating through the tubes: if there are smokes or water.

In our next blog we will speak about the rest of heat transfer fluids. Read More!

What is an electrical steam boiler?

In our post about Pirobloc electrical steam boilers on 2008 we already spoke about the renewed this type of boilers, whose basic characteristics resides in that the energetic source that we used for the steam production is the electricity.

The body of the boiler, in this case, is greater with respect to the dimensions of the resistance that it lodges because it has a double function: the central and inferior part where the electrical resistance lodges, it is plenty of water; and the top of the tank body becomes a chamber that contains the steam produced thanks to the heating.

Logically, whichever major is the body-tank of the boiler, the camera will be able to lodge major quantity of steam and/or of greater quality: the steam will be very drier as it has minor direct contact with the surface of the water, inside the body of the boiler.

In this type of boilers, the thermal power is given to us by the power of the used electrical resistances, being their efficiency of the 100% of the consumed energy.

In reference to the pump, it will be of water in this type of boilers, for the feeding of the boiler body from public-supply water, from a tank in which it has been treated or decalcified, and to make the steam production.

Finally and because it is a steam machine, we would like to remember to you that it will be necessary to locate this boiler specifically in a room placed at a certain distance of the general walk of people, advising you to follow the rest of indications of location and use with regard to this type of machines under pressure. Read More!

New regulation of machines under pressure

The Regulation of machines under pressure has been modified by the R.D. 2060/2008 that was published in the BOE nº 31 of 05th/02/09 and which will enter in force the 05th/08/2009. With this modification, the E.U. try that every national regulations of machines under pressure of each country, they converge progressively in an unique European common regulation.

The contributed modifications are made in order to approach the Regulation of Installation of Equipments working under Pressure (used by the installers of equipment of these characteristics in Spain) to the European Directive 97-23-EC (used by the manufacturers of equipments of these characteristics, at European level), using similar concepts at which appear in the E.D. 97-23-EC .

It’s also pursued the uniformity to the values of the pressure tests, in reference to the differences that existed until this moment between both norms. They change the following categories:

• About the boilers: from type A, B and C, they convert into 1^st and 2^nd class, although the criteria to determine the category are similar.

• About the installer companies.

• About the titles and attributions.

• The periodicity of the inspections with or without pressure test.

• They exist now 3 levels of tests, existing before 2 types.

• The periods of application change.

• It appears the figure of the Agent, who will be the organism in charge to make the tests.

• They change the organisms which apply the test, with more participation of the OCA’s (Authorized Control Organism).

• It changes the design of the plates.

There will be changes in reference to equipment and securities, but in a less way.

Do not hesitate to consult us the projects that you have in mind and how the new regulation can affect to them.

Pirobloc electrical steam boilers

The new range of PIROBLOC Electrical Steam Boilers has been conceived as a monobloc group, provided of all the security and control devices, as an electrical control panel, water feeding pump, levels, pressure switches, etc.

As a result of the R+D+i department of the company, this complete line includes powers from 25 kW to 200 KW, and so, a steam production from 35 to 300 kg/h.

The maximum pressure of the standard service is 8 bar (working temperature up to 180 ºC), but also other pressures under particular specifications can be supplied. The design code used is EN-13445. As a variant, we can make it completely in stainless steel.

These equipments will go mainly destined to Chemical, Pharmaceutical, Food and Cosmetic Industries.

Besides the manufacture, the company can make the assembly, the installation, the start up, the legalization of the installation and the after sales service.