[Greenbuilding] Stale Air

[John Bone]

Hi,
Over here in the UK we require (state and non-state) Schools to ventilate  
classrooms to keep the CO levels below 1500 ppm to keep pupils alert and  
healthy. The English and Welsh and Scotish Buildoing Regualtions enforce  
this on all new buildings. The Victorians over 100 years ago felt that  
high ventilation rates were essential in schools and other public  
buildings.

The UK's building Regualtions have on the other hand recently required  
ever tighter buildings in terms of cnstructional "air-leakage" but also  
required good and controllable ventilation systems. Usually passive i.e.  
non-mechanical, the Uk has even drafted a ban on the use of only  
mechanical air-conditioning for new buildings. The EU (European Union) has  
also issued european laws on minimum efficientcy for mech ventilation.

http://www.silentshadow.org/

John Bone, MBEng, BSc Hons, ICIOB
Buidling Compliance Consultant

On Wed, 15 Dec 2010 21:25:03 -0000, jfstraube <jfstraube at gmail.com> wrote:

> Get such an integrated sensor is easy.  Controlling a system is the hard  
> part.  Some systems cant be controlled, for example, systems with no  
> independent ventilation system (many houses, most commercial multi-zone  
> VAV systems) or no independent humidity control (essentially all houses  
> and most commercial buildings).  And CO is not a control function is an  
> alarm function, like a smoke detector is.
> I dont quite see the little benefit to having sensor that monitors temp,  
> RH, CO2, CO as one integrated blob. I see many disadvantages.
> Brian, did you have an idea of why this is good and what it might  
> control?
>
>
> John
>
>
>
> On 2010-12-15, at 2:56 PM, John O'Brien wrote:
>
>> On Mon, Dec 13, 2010 at 4:21 PM, Brian Uher <brian at amicusgreen.com>  
>> wrote:
>>> Does anyone know of an integrated sensor system - temp., humidity,  
>>> CO2, CO,
>>> etc. - that interpolates and controls the system - that works?
>>> Remote coupling to web?
>>>
>>
>> An Arduino could probably do it. You'd have to build it though.
>>
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>
> John Straube
> www.BuildingScience.com
>
>
>
>
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