PIROBLOC

The heat insulation in a thermal oil installation

The technology of the heating through thermal oil has like basic characteristics the possibility of working at high temperatures (180-280ºC), not generating high pressures as it happens in steam installations.

This is due to the fact that there is not a change of phase from its liquid form and to the fact to work in a closed circuit.

But, today we want to focus ourselves in the type of specific heat insulation recommended to isolate the thermal fluid facilities, existing in the market multiple products for it, between which the mineral wools (rock wool), the plastic foams, products with cellulose, etc., all of them with the basic characteristic to avoid losses of heat from the heating fluid, to guarantee the yield and good operation of the installation, avoiding accidents and expensive energy losses, avoiding a greater environmental contamination and global heating.

In our case, it is important to consider the working temperature of the process and the diameter of the installation piping, recommending the following:
We will use casting dies in pipes of small and medium diameter, due to the concentric disposition of fibers. Therefore, the thickness of the casting dies would not have to be inferior to 60 mm for the pipe until DN-65, being of 80 mm for the pipe of greater diameter. The use of the rock wool is recommended in higher diameters of the previously mentioned ones, and for working temperatures over 200ºC.

In order to extend the previous information, you can consult the norm UNE 9310 that applies in Spain and that informs into the minimum thicknesses of isolation according to the diameters and temperatures of work.

Please, remember that it is not necessary to isolate the expansion and collecting tanks in the thermal oil facilities.
Please, also remember that the insulating wools use noninflammable materials and of a minimum calorific power, being against the propagation of fires. If we have high working temperatures or increases of temperature in an installation, will have to choose high density (HD) rock wools for our insulation.

To finish, as habitual norm and with the object of calculations, it is used the following reference: the temperature of wall of a heat consumer machine, of a thermal oil heater, of the piping, etc., does not have to surpass in 30ºC the room temperature.
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Thermal fluid heater: the best location

In the present article we would like to give some advices to consider at the moment of the constitution, possible construction and start up of a new production line or a new plant. These advices can result in a more efficient and rational way to raise the positioning of your production sources, such as the thermal fluid heater:

In the case of a new industrial plant in which the roof does not still exist and the heater has important dimensions, people usually takes advantage of the nonexistence roof to enter the heater. Please, consider to make an opening in the plant of the dimensions of the boiler, for possible future repairs or even for the moment in which the heater will be dismantled and in order to avoid to disassemble part of the tile roof in the future.
At the time of the thermal oil heater definitive positioning, it can be located near the consumer and/or of the working area of the staff in charge of its maintenance and monitoring. This action will revert in an economic saving as far as materials of installation and time used by that staff in the control of the boiler.
You must remember that we have boilers with vertical and horizontal design to save any difficulty of space you can have.
In reference to the fuel to be used in the burner of the boiler, you should remember that:

In case of using natural gas, you should avoid the placement of the heater in cellars. In this way, you would not have to make a forced ventilation installation, necessary to facilitate the combustion of the gas burner if placed in such places.
In case of use light oil or heavy fuel oil, you will need a storage tank for these fuels, reason why you can save the installation of an intermediate vessel if you install the heater the closest possible of the main fuel storage tank.

In reference to the necessary elements for the good operation of a thermal oil circuit, you should take into account one expansion and one collecting tanks of certain dimensions.
To finish and speaking about the chimney, remember that it must exceed minimum 1 meter over the surrounding buildings within a radius of 10 meters with respect to the axis of the chimney.

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The most interesting published subjects

Three years ago, we published the first post in this blog. After this lapsed time, we have stated that some subjects have been more visited and interesting than others and for that reason, following you can find them:

The day to day and just the short time at disposition, they do that our readers receive by RSS the new publications on the blog, but we receive very little commentaries.

Thanks to your commentaries, we could know what information is more interesting to you than other of each subject, and thus we can develop it or answer to you.

We invite to you to comment and in any case, we promise to always answer.

Good year to all! Read More!

Our Christmas present

According with the success of the thematic of the last posts and the dates in which we are, we want to do a gift to you.

Following with our policy to share the knowledge, we have the pleasure to announce to you that we have put at the disposal of all you in our Website and concretely in the section of Technology, some formulas of calculation that can be useful for the future professionals in our sector of activity and also for our clients.

Also, we are thinking especially about our readers who are not engineering specialists: When they will need a heating generator for a thermal fluid circuit, they will be able to have a priori more comprehensible specific parameters, which they will receive from their suppliers.

We hope that this gift serves to make easy your future decisions of investment in heating systems. As Goethe said: “The love and the joy are wings for the new projects”.

Merry Christmas from PIROBLOC. Read More!

Our third anniversary

Three years ago, we published the first blog in google.

Lapsed that time, we have been object of a study next to other companies, we have received some consultations and we hope to have contributed with enough information on the technology that we develop, technical points of view and to have helped to decide on the convenience or not of its use in the investment projects of the people in charge of industrial plants.

By our part, we are thankful for the visits to our blog and about the received comments of the readers.

PIROBLOC born in the secondary sector and oriented its activity to the national market as well as to the foreign one, using this blog and other tools at disposal today for everybody, to continue transferring knowledge and technology to which wants to continue reading us.

We hope to be able to continue receiving your visits and your consultations, to improve and to grow in all the industrial sectors in which our long experience is a guarantee. Read More!