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PostPosted: Wed Mar 20, 2019 3:22 pm 
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Hello,

I’m aware this forum is geared towards private, individual DIY projects but there is a lot of knowledgeable folk here and, if possible, I would like people’s opinions on the following…

Is anyone here familiar with air conditioning installation and the building regulations surrounding them?

I have just started working in a large factory which is always warm, even in the depths of winter. This is because of the heat generated from the machines we use.

I am told summertime is almost unbearable. The combined heat from the machines and the weather outside would be enough, but the hot air outlet from office air conditioning systems actually gets blown back into the factory where we work, as opposed to outside!! How fair is that!?

Yes, beautifully cool air-conditioned offices in the summer, and a ‘fan oven’ atmosphere on the shop floor :(

Is this legal? Does blowing the hot air from an air-conditioning outlet back into the workplace area increase the likelihood of Legionnaire’s Disease?

Does increasing the temperature of an already hot factory even further by venting hot air into it constitute gross negligence?

Any thoughts much appreciated.


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PostPosted: Wed Mar 20, 2019 4:04 pm 
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http://www.hse.gov.uk/temperature/law.htm

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PostPosted: Wed Mar 20, 2019 4:58 pm 
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If there is so much heat being generated has anyone in management given thought to capture and use this heat? Or of increasing the thermal efficiency of machinery within the factory?

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PostPosted: Thu Mar 21, 2019 9:48 am 
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Hi Job and Knock,

Thanks for the reply.

You have a valid point. For example, instead of running our wrapping tunnel ovens at 100% electricity usage, it might reduce electricity usage by, say, 5% or 10% if we ducted waste hot air through those tunnels, from the air conditioning units?

But my immediate concern is H&S. I know there is no legally defined upper and lower working temperatures, only a 'legal obligation on employers to provide a ‘reasonable’ temperature in the workplace'. I would argue that installing air conditioning units for the office staff and having the hot air from those units blown back into an already hot factory in the summertime is *not* a company providing a reasonable temperature for the factory workers.

Temperature aside, isn't there a Legionaries Disease risk?

This is the only place I know of that does not have the hot air outlet directed to outside. Commercial air conditioning systems must have some installation requirements for the expulsion of the hot air?


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PostPosted: Thu Mar 21, 2019 11:03 am 
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It is a far better way to approach this with a letter or report to management with a sort of reverse psychology approach. Write a report on how important it is for the company to save on energy costs and that harnessing this waste heat from this source could lead towards reduced energy bills and cleaner carbon footprint. All that sort of stuff. No one likes a whinger and just complaining of an uncomfortable work space, or even threats of reporting them etc will mean you will probably be edged out of a job.

Using this approach might sort your problem and give you a bit of kudos.

Good luck

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PostPosted: Tue Mar 26, 2019 9:23 pm 
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Sadly there's no regulation for placing the heat exchangers into another work area.

Why they do this just beggars belief.


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