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Frequently Asked Questions
Our team are always availabe to answer any questions you may have about our services or how we could meet your requirements. You may also find the answer you are looking for amongst the frequently asked questions below, but if not, please do not hesitate to contact us.
Yes, the object of comfort conditioning as the name implies is solely to provide a comfortable environment for the majority of occupants. Humans are reasonably tolerant to humidity and may be comfortable from a range of between 55% and 20% relative humidity at normal comfort temperatures. It is therefore common when specifying to limit the humidity in summer and not specify a limit in winter. Typically therefore a specification would state an internal condition of 22°C / 50% relative humidity being maintained at 30°C / 20°C wet bulb external conditions in summer. In winter the specification may typically be 21°C internal temperature at -3°C saturated outside air temperature.
Industrial conditioning is provided generally for a process which requires a closely controlled atmosphere. A typical specification may be that an internal environment is required of say 21°C ±0.5°C and 50% relative humidity ±2.5% at all external conditions. It will be seen therefore that the industrial conditions for clearly defined limits rather than comfort conditioning which is based on statistical surveys of occupants feelings.
Mixed flow describes a method of air distribution from an air conditioning or ventilation system.
It has been and still is the most widely used method of supplying air into an atmosphere being air conditioned. This form of air distribution commonly uses ceiling diffusers or wall grilles at high level. As most air conditioning units are manufactured for the mixed flow air distribution market the associated air handling equipment has also been developed for the mixed flow market.This air handling equipment is therefore widely available and at very competitive costs as there are many manufacturers of this equipment throughout the world.
Recently displacement air distribution has gained in popularity, mainly due to comfort and cleanliness considerations. (With displacement ventilation air is introduced into the air conditioned space at low level and at low velocity). As the displacement market is still much smaller than the the size of the mixed flow market the complimentary air handling equipment has lagged behind and has generally to be made to order and is thus more expensive.