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Fans - BasicDefinitions

Fan SystemCalculation and Design

Important Standards

Practical Examples

Important Standards

IMPORTANT BUILDING VENTILATION STANDARDS

C.T.E. (replaces: NBE-CPI/96)

DESCRIPTION:

ROYAL DECREE 314/2006, 17th March, approving the Spanish Te chnical Building Code.

PURPOSE:

It is a regulation that lays down the basic quality requirements for buildings and

facilities. This regulation covers specific basic building requireme nts related to the safety and

wellbe ing of people. These refer to bo th structural safety and fire protection, and hea lth andsafety, noise protection, energy saving and disabled access.

DETAILS:

Article 11. Basic fire safety requirements (SI in Spanish) Article 13. Basic health and

safety requirements (HS)

Article 13. Basic hea lth and sa fety requiremen ts (HS)

RITE

DESCRIPCIN:

Regulation on building heating installations.

PURPOSE:

To set the energy efficiency and safety requirements for these installations that are

designed to ensure the wellbeing and health of people, during the design and calculation

process and during execution, maintenance and use, as well as establish the procedures to

prove this fulfilment. He ating installations will include permane nt climate control installations

(heating, cooling and ventilation). It will apply to heating installations in new or refurbished

buildings. It will not apply to heating installations in the part of industrial, agricultural or

other processes that is not aimed at ensuring the wellbeing and health and safety of people

through heating.

REBT

DESCRIPTION:

Low voltage electrotechnical regulation (2002).

PURPOSE:

This regulation aims to set the technical conditions and guarantees for electrical installations

Air extraction in carparks (pdf inSpanish)

Air extraction inkitchen extractorhoods (pdf inSpanish)

Air extraction inhouses (pdf inSpanish)

Stairwellove rpressure (pdf inSpanish)
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connected to a power supply regarding low voltage limits.

DETAILS:

PURPOSE: a) To ensure the he alth and safety of pe ople and property. b) To guarantee

the operating of these installations and prevent disturbance in other installations and

services. c) To contribute to the technical reliability and economic efficiency of the

installations.

SCOPE OF APPLICATION:

1. The present regulation will apply to the installations that distribute electrical energy,

gene rators for internal consumption and receivers, with the following nom inal voltage limits:

a) Alternating current: equal to or less than 1,000 volts.

b) Continuous current: equal to o r less than 1,500 volts.

2. This regulation will apply:

a) To new installations and changes and extensions to these.

b) To existing installations before they enter into force that undergo major changes or

repairs and to extensions to these.

c) To existing installations before they enter into force regarding the inspection system,

although the technical criteria applicable for these inspections will be those relating to the

regulations under which they were approved.

UNE-EN 13779:2005 (replaces: UNE 100011:1991)

DESCRIPTION:

Non-residential building ventilation. Requirements regarding features of buildingventilation and air conditioning systems.

PURPOSE:

This document applies to the design of ventilation and air conditioning systems for non-

residential buildings used for human occupation. It focuses on the definition of relevant

parameters for these systems. Naturally ventilated buildings are not included under the

purpose and scope of application of this document.

The classification system in this regulation uses different categories. Examples are given

for some values and the typical ranges with default values are given for the requirements.

The default values provided in this document must be used when other values are not

specified. The classification should always be suitable for the building type and its use, and

the classification criteria should be explained if the examples given in the regulation are not

used. National regulations must always be fulfilled, even when outside the ranges given in

this document.

DETAILS:

To provide the guidelines for ventilation systems in order to ensure a comfortable and

health indoor environment.


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UNE 100165:2004 (replaces: UNE 100165:1992)

DESCRIPTION:

Climate control. Smoke extraction and ventilation in kitchens.

PURPOSE:

The purpose of this regulation is to set the criteria for the calculation and design of

mechanical ventilation systems in industrial kitchens. This regulation does not establish the

design criteria for different types of extractor hoods in order to increase their intake

efficiency. The regulation applies to commercial kitchens that run on electricity or any other

fuel.

DETAILS:

The extraction airflow of an extractor hood is the most important aspect of industrial

kitchen ventilation.

UNE 100166:2004 (replaces: UNE 100166:1992)

DESCRIPTION:

Clima te control. Car park ventilation.

PURPOSE:

This regulation lays down the criteria for the calculation and design of mechanical

ventilation systems in underground car parks and natural ventilation in aboveground car

parks. The regulation applies to public car parks.

DETAILS:

The ventilation airflow must under no circumstances be less than 18 m3/h * m2.

UNE-EN 12101-3:2002

DESCRIPTION:

Smoke and heat control systems. Part 3: Specifications for mechanical smoke and heat

ex tractor vents.

PURPOSE:

This part specifies the necessary elements and provides the testing methods for

mechanical smoke and heat extractor vents that are installed as part of an air inlet and heat

and smoke extraction system. It also describes the procedures to approve a range of

mechanical heat and smok e a ir vents and their motors base d on a limited number of tests.

DETAILS:

Classification by fan temperature and operating time. Class F400 (400C/2hours).

UNE-EN 12101-6:2006 (replaces: UNE 100040:1996)


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DESCRIPTION:Smoke and heat control systems. Part 6: Specifications for pressure differential systems.

Equipment.

PURPOSE:

This regulation covers the information and requirements for design, calculation methods,

installation and testing of the systems designed to limit the spreading of smoke through

pressure differentials.

DETAILS:

To supply outside a ir to a p ressurised space me chanical fans with the right ducts must be

used where necessary.

IMPORTANT REGULATIONS REGARDING POTENTIALLY EXPLOSIVEATMOSPHERES

UNE-EN 60079-10:2004 (replaces: UNE-EN 60079-10:1997)

DESCRIPTION:

Electrical equipment for explosive gas atmospheres. Part 10: Hazardous site

classification.

PURPOSE:

In sites in which hazardous quantities and concentrations of flammable gas or steam

might appear, preventive measures must be taken to reduce the risk of explosion. The

purpose of this part of the CEI 79 is to explain the fundamental criteria to assess the risk of

explosion and provide guidelines so that the design and operating parameters reduce this

risk. In the case of electrical apparatus, this regulation is the basis for the right selection

and installation of the appa ratus to be used o n hazardous sites.

ATEX

DESCRIPTION:

This is the abbreviation for "Explosive Atmospheres" and is the term on which two

European Directives are based:

PURPOSE:

Product Directive 94/9/EC

It focuses on equipment manufacturer obligations. It describes the Essential Health and

Safety Requirements (EHSRs) for products with regard to design, manufacturing, testing,

documentation and maintainability.
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Workers Directive 1999/92/EC

It focuses on user or employer obligations. Risk analysis and description. Definition of

areas and maintenance practices in relation to factory safety. It describes the minimum

requiremen ts to improve health and sa fety protection for workers at a potential risk.

PrEN 14986:2006

DESCRIPTION:

Design of fans to work in potentially explosive atmospheres.

PURPOSE:

This regulation only deals with the prevention of ignition in an explosive atmosphere for

fans.

DETAILS:

4.8 Materials for fan rotating and static parts.

4.15 Safety distance between rotating elements and the fan casing.

IMPORTANT REGULATIONS FOR SMOKE EVACUATION IN INDUSTRIALPREMISES

ROYAL DECREE 2267/2004

DESCRIPTION:

ROYAL DECREE 2267/2004, 3rd December, approving the Fire Safety Regulation in

industrial premises.

UNE 23585:2004

DESCRIPTION:

Fire safety. Smoke temperature and evacuation control systems (SCTEH in Spanish).

Calculation and design requirements and methods to design a smoke temperature and

evacuation control system in case of fire.

PURPOSE:

The purpose of this regulation is to provide those in charge of designing a building with a

suitable analysis and calculation method to e stablish the nee ds and requirements of one or

several Air Inlet and Heat and Smoke Extraction System or Systems (SCTEH in Spanish) for

this building, in order to properly control combustion smoke and gases generated in the

worst case scenarios foreseeable regarding fires, as well as the their temperature. A SCTEH

consists of a set of vents or mechanical extraction units (fans) to extract combustion smoke

and hot gases during a fire and, where applicable, clean air inlet vents, with the right
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measurements so that in the event of a fire, as well as keeping the average smoke

temperature at an acceptable level, the health and safety conditions when evacuating and/or

rescuing people and animals are improved and the contents and structural elements of the

building are protected, allowing the fire to be fought while keeping the building in a similar

state as it was in when the fire started.

DETAILS:

CTE SI3-8.2 states the following: The system design, calculation, installation andmaintenance can be completed in accordance with the standards UNE 23585:2004 (in which

the exclusion of mechanical or forced evacuation systems described in the last paragraph of

section "0.3 Applications" should not be taken into consideration).

IMPORTANT BOILER ROOM REGULATIONS

UNE 60601:2006 (annuls: UNE 60601:2000)

DESCRIPTION:

This covers stand-alone machines and equipment that generate heat or cold or

cogene ration ma chines that use gas fuels.

PURPOSE:

This regulation lays down a) the requirements applicable to premises or buildings that

contain generators used to produce heat and cold used a heat-carrying fluid, excluding the

air and including the steam at a maximum working pressure lower than or equal to 0.5 bar,

with an overall nominal working power of above 70 kW , or b) cogene ration equipme nt with a

nominal hea t consumption of above 70 kW that use gas fuels. This regulation also app lies

to outdoor stand-alone equipment, either heat- or cold-producing or cogeneration.

DETAILS:

Extractors must consist of a centrifugal air extractor installed outside the building. The

casing-wheel assembly must be made from materials that do not produce mechanical

sparks and must be driven by an electric motor outside the assembly.

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