mechnical ventilation requirement in basement of builings?
452060
One must ask what is the air volume of the structure in Cu Ft (or Cu M) then determine what the volume of exhaust gasses are to be expected that remain within safe concentrations versus the total volume of exhaust gas versus total structure volume, then determine how often the total air mass is to be exchanged to maintain said safe consentrations.\n\nJust a guess.
361569
It includes the number of air handlers being used, and the use of each room.  For example, equipment rooms have specific cooling requirements.  Generally, it depends on the total build-up area.
771041
It is the condition where a building has so much air pressure inside that the doors won't stay shut.
172635
The term "English basement" can confuse a newcomer to the area. It signifies a basement apartment with windows that are at or at least partially above street level. That means lighting is key.
869722
d'abord, je te conseille d'inspirer par le nez \net expirer soit par le nez, soit par la bouche\nen inspirant par le nez, l'air respiré est réchauffé et moins aggressif pour te spoumons qu'en inspirant par la bouche\n\nensuite, cette respiration se doit d'être régulière, comme un métronome, elle se rythme avec tes pas de course\nen général, on fait une inspiration pour deux pas de course et une expiration pour 2 ou 3 pas de course\n\nenfin, le point de côté est conséquence de 2 paramètres : pas assez d'oxygène ou pas assez d'eau\nil te faut bien boire avant chaque footing ET peut être pendant si ton footing dure longtemps\n\nenfin, il te faut définir le pourquoi de ton footing : \nsi c'est une endurance cardiaque, cours avec un cardiofréquencemètre et fais un système [échauffement suivi d'1/2 heure en zone intensive suivi d'1/2 heure en zone de décrassage]\nsi c'est pour maigrir un peu, utilise également un cardiofréquencemètre et reste en zone constante au delà de 150 pulsations et courre plus d'une demi heure mais sans forcer (ne dépasse pas 180 pulsations)\nune fois que tu connaitras bien tes rythmes cardiaques (qui n'ont rien à voir avec ton souffle), tu pourras te passer d'un cardio
427878
...sorry, no basement.  We have a \nstorage shed.
693386
I believe it developed on time as a practical ecomonic choice or industry standard.\n\nYou would want to use a very low pressure if possible but still it needs to be high enough to actuate instuments and control devices.
294283
An apartment with basement? Cause only basements are not sold. Moreover, it is illegal now in NY to live in basement.
1124736
A person needs more info. What is ambient temp for design. What is the wall, floor and ceiling construction, insulation thickness and type. \n\nThese will determine the minimum design load, from that the condensor and evaporator coils can be sized. \n\nYou need an HVAC engineer or tech to do this.
28885
The requirements are listed at the site linked below.
941524
Gee...broad question...depends what ur transporting.\ne.g. for gases u need a semi-permeable membrane, a thin membrane, a gradient, a moist/mucus surface
210118
Hot and cold air converging over an area of low presure.
930002
A sealed (pessurised) system is normally about 1.5 bar. Open vented - depends on the head, 10 meters/ 33'  = 1bar
641447
The flow rate in CFM (cubic feet per minute) is often used for compressible gases.  Therefore it is usually also necessary to indicate the pressure and temperature.  For ratings of fans and blowers at atmospheric conditions, it may be assumed that standard temperature and pressure at sea level are intended and will be close enough for most application (except high on a mountain?).
983398
I have a heat pump system for my shop and my wife's craft room. My shop is on the first floor and her room is on the second floor. The HVAC contractor installed one outdoor compressor and one air handler. There are electrically controlled dampers in the supply and return air from each room. There are two thermostats and a microprocessor. The microprocessor controls the dampers and directs the heating (or cooling) to which ever room is calling for it.
921628
Yes - in enclosed envioment
57870
You would want at least 50,000 BTU, Hope this will answer your question. I had an 1800 sq. ft. home once so I know. It costed me $5,000.00 installed with A/C and ducts.