Industrial Extractor Fans Buyer’s Guide

We all need to be able to breathe! Ventilation is extremely important in any work environment, and never more so than in an industrial setting. Ventilation may be provided naturally by opening doors and windows, but in an environment where air may be contaminated by fumes and vapours, dust or chemicals, relying on what can be highly unreliable and variable natural ventilation is neither legal nor desirable. It is often necessary to install industrial extractor fans in workplaces, workshops, factories and warehouses. This will ensure a healthy, clean airflow throughout the space and ensure that products are in a good environment, and people working there are able to breathe. But when buying industrial extractor fans, where should you start? What should you consider when decided which fan to purchase?

– What is the fan for?

First of all it is important to consider what the fan will be used for, and where it will go. Is the fan for general ventilation, to help with the air flow, or is it to be used to remove noxious fumes or hot air created by certain machinery or equipment, for example in a manufacturing process or a busy kitchen? It is important to purchase the correct fan for the job and also to position the fan correctly.

– Rate of ventilation:

The rate of ventilation is basically speaking the number of times that the air in a room or space is completely refreshed. It is usually expressed as ‘air changes per hour’. How many air changes per hour are required will depend on the application. For example, while a commercial kitchen will usually require over 30 air changes per hour, a store or warehouse may only require 3-6. It is important that you know what rate of ventilation you need so that you can get the fan appropriate to your need.

 

extractor fans

– Size of fan:

The size of fan needed obviously depends on the size of the room/space it is to serve, as well as the air changes per hour required. A simple rule of thumb is to use the formula: Fan volume (m3/hr) = Length of room(m) x Width of room(m) x Height of room(m) x air changes per hour. This formula will give you the fan volume required. You should always select a fan that exceeds this minimum requirement.

– Reliability and good design:

Finally, it is important to select industrial extractor fans which have been made by sellers who maintain high standards of design and manufacture. You want to select a fan that will last, will not constantly break down, be inefficient or faulty. Do your research, and look at customer reviews.

It only remains to say that you must always ensure that you meet the legal requirements for your location and industry. Make sure you think about all of the above when buying industrial extractor fans.

How to Choose an Electric Outboard Motor

Choosing the correct electric outboard motor for your boat can be a complex business, but it need not be too confusing. Different boats for different uses will of course have different requirements, but keeping in mind the following elements will help in selecting the correct electric motors for your purposes.

Power:

First of all, don’t imagine that you will be able to achieve the same top speeds and horsepower with an electric outboard motor as you would with one running on petrol. The current top speed of most electric outboard motors on the market is around 5 mph. Though this top speed is dependent of course on the size of the boat, the prop angle, and the amount of thrust of which the engine is capable. It is important to check that the electric motor you purchase has a high enough horsepower to propel a boat the size of yours. Bear in mind though that top speed is less important than acceleration and maneuverability.

Charge:

One of the most important elements of electric motors is the battery. The battery is a critical part of the system, and it is imperative that you choose the correct battery. All batteries used in an electric outboard motor should be deep cycle marine batteries of high quality. Unlike car batteries, these batteries are designed to run down completely and then be recharged. (They should always be recharged after use.)The amp draw of the motor and the amp hour rating of the battery are worth knowing before you buy, as this will determine for how long your engine will run at full thrust.

Durability:

Make sure that all the components of the electric motor you buy are fit for the purpose for which you intend it. If you intend to use it in the sea, is the engine intended for use in salt-water? Does it have corrosion protection? Are the metal parts stainless steel? Are all the electrical connections properly sealed? Make sure that your electric motor was manufactured to a high quality finish, and is fit for the purpose for which it is intended. The durability of the components are important, since you don’t want to have to replace it too soon after you buy it.
 

outboard motor

 

Size:

This may seem obvious, but make sure that the electric outboard motor you buy is the correct size for the boat, not just in terms of the power output and charge storage capacity, but also in its physical dimensions. Shaft length is crucial. It must be submerged to the correct depth or it could cavitate, scaring the fish and creating havoc in the undersea environment.

Design:

Design is important. Less how the engine looks than how it operates. Is the engine you are thinking of purchasing well designed? A good design will mean that an engine operates better, and lasts longer. It may also mean that less energy was used in its manufacture, which can only be a good thing for those of us who are trying to help the environment by reducing our reliance on polluting fossil fuels.

Bear all this elements in mind when choosing an electric outboard motor and you should end up with one that you are happy with and which meets your water transportation needs for a long while to come.