Food Service & Hospitality Industries Proper Planning For Ventilation Systems

Food Service & Hospitality Industries Proper Planning For Ventilation Systems

No doubt about it when it comes to ventilation and venting systems there are no shortage of vent hood types or options. Still when it comes down to function and functionality certain basic functions and considerations come into play. It all comes down in the end to a number of factors - specific use and needs, logistics and often cost.

When completing the workup for ventilation exhaust systems always remember that if the system is substandard and shortcuts are made for ease or cost - that it is no bargain in the end. After completion the whole exercise may be termed a waste and new management or owners may have to redo the whole system again - in addition to removal of the older system along with inconvenience and other costs. For example some time ago, and before the anti-tobacco stop smoking in public places craze - a donut shop chain opened up. Even though they did what they thought was a thorough workup job, a substandard ventilation system was planned for and installed. You would have thought that just the sight of customers and patrons smoking with their cup of coffee would have alerted the planners and designers to the need for more than basic ventilation system workup as part of their planning. Perhaps it was in retrospect was that the experience of their competitors led those firms to overcompensate with more than overcapacity of exhaust ventilation and that the crew doing the heating and cooling system planning did not notice the cigarette smoke fumes - as they had been reduced and eliminated to a low concentration due to the large scale systems in place.

Regardless the competitive donut shop group plowed ahead. The results were that even if staff at the donut shops propped open the front and rear doors with chairs - that you would of that the donut shop was in the middle of a major forest fire with plumes of smoke in the air. As a result the restaurants were not inviting to patrons, they stayed away. In addition winter heating and summer air conditioning costs were way above projections. In the end the chain packed up shop and closed.

In the end when dealing with heating and ventilation exhaust system planning and forethought are key.

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Proper Roof Ventilation System

Proper Roof Ventilation System

A well maintained roof a source of pride for a household. It lives longer and gives no trouble to the members living within the building. A roof is also the structure within a building which is exposed to the maximum extent to natural elements like winds, snow, hail and sunlight. This demands extra precautions and care for the roof. However, the roof also remains the most neglected part of any building, may it be a home or a utility building. The most important aspect of a roof is its ventilation system. A proper ventilation system for a roof is often the single most important factor which governs its longevity. A roof having a good ventilation system, along with proper maintenance will live approximately 25% more than any other roof.

So what constitutes a good roofing system? A good roof ventilation system ensures that there is balance between the air coming in and the air going out. The cross ventilation of air around the roof keeps the roof temperature bearable and also keeps the material used in the construction of the roof from reaching very high temperatures.

What constitutes a proper ventilation system? Actually the ventilation system for all structure is based on the principle of a wind funnel. A proper roofing ventilation system will consist of an air intake hose and a corresponding exhaust hose to ensure there is proper ventilation of air within and under the roof. The passage of external air around the roof will act like a cooler and ensure the internal temperature will not rise to a temperature greater than that of the air outside. The system is akin to the fireplace we have at homes. The warm air rises and creates a slight suction near the mouth of the intake hose. The relatively cooler air outside the hose removes excess heat from the underside of the sheeting as it exits the exhaust. This cycle of heat exchange regulates the temperatures of the new shingle, saving your investment in roofing from becoming a cinder.

The choice of a ventilation system will depend upon the size, shape and the material used in constructing the roof. Proper ventilation systems consist of vents and hoses in the roof such that there is balanced air flow under and over the roof. It is estimated that in a balanced air ventilation system for a roof, there is a requirement of one square foot of venting for every 250 to 300 cubic foot of air in the attic or the space immediately below the roof. This also translates to an appropriate number of vents within the roof. These vents range from static open units and turbine style ones to thermostatically operated and electronic ones. The choice depends upon how deep your pockets are and the size of the roof.

It is always advised to have an expert look at the roofing structure and then suggest the ventilation system. Ideally the ventilation system is designed at the time the roof is constructed. However, with time, certain blockages and other external factors tend to dislodge the ventilation system. This requires for a re-check and re-calibration of the roof venting system. Care must be taken that the vents and hoses are not blocked and proper air circulation is possible and allowed within the roofing structure. It will ensure the longevity of the building and also ensure that there are no leaks and related problems in your roof for a long time.

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