Nationwide Louvre Company Aldridge, Walsall, Aluminium Fabrications and Manufacturers
Naturalvent Limited not just Naturalvent.
Friday, 6 April 2012
Monday, 2 April 2012
A natural ventilation system should be effective regardless of wind direction news on PlumbingPark.co.uk
A natural ventilation system should be effective regardless of wind direction news on PlumbingPark.co.uk
For air to move into and out of a building, a pressure difference between the inside and outside of the building is required. The resistance to flow of air through the building will affect the actual air flow rate. In general, controlled natural ventilation and infiltration are driven by pressure difference across the building envelope. The pressure difference is caused by:
• wind (or wind effect);
• difference in air density due to temperature difference between indoor and outdoor air (stack or chimney effect); or
• combination of both wind and stack effects.
In most cases, natural ventilation depends on a combined force of wind and stack effects. The pressure patterns for actual buildings continually change with the relative magnitude of thermal and wind forces. The pressures due to each effect are added together to determine the total pressure difference across the building envelope.
The relative importance of the wind and stack pressures in a building depends on building height, internal resistance to vertical air flow, location and flow resistance characteristics of envelope openings, local terrain, and the immediate shielding of the building structure
Guidelines for natural ventilation
The following guidelines are important for planning and designing natural ventilation systems in buildings:
• a natural ventilation system should be effective regardless of wind direction and there must be adequate ventilation even when the wind does not blow from the prevailing direction;
• inlet and outlet openings should not be obstructed by nearby objects;
• windows should be located in opposing pressure zones since this usually will increase ventilation rate;
• a certain vertical distance should be kept between openings for temperature to produce stack effect;
• openings at the same level and near the ceiling should be avoided since much of the air flow may bypass the occupied zone;
• architectural elements like wingwalls, parapets and overhangs may be used to promote air flow into the building;
• topography, landscaping, and surrounding buildings should be used to redirect airflow and give maximum exposure to breezes;
• in hot, humid climates, air velocities should be maximised in the occupied zones for bodily cooling;
• to admit wind air flow, the long façade of the building and the door and window openings should be oriented with respect to the prevailing wind direction;
• if possible, window openings should be accessible to and operable by occupants;
• vertical shafts and open staircases may be used to increase and generate stack effect;
• openings in the vicinity of the neutral pressure level may be reduced since they are less effective for thermally induced ventilation;
• if inlet and outlet openings are of nearly equal areas, a balanced and greater ventilation can be obtained.
Naturalvent Limited is based on the West Midlands for easy access to all parts of the United Kingdom. Naturalvent Limited offer a supply only or full contract service including site survey's and project specific manufacturing drawings for the customers approval, bespoke manufacture and installation.
Naturalvent Limited's have expert staff, with a very experienced design team and expert installation engineers providing a service and quality to be very proud of. Should an architect or design engineer have an idea that in not currently on the market Naturalvent Limited will either adapt or modify existing designs or start from scratch and develop the architect’s idea from concept through to installation.
Naturalvent Limited also supply and install high quality extruded aluminium weather louvres, louvre screens, plantroom louvres, louvred doors, louvred penthouse enclosures, acoustic louvres and solar shading through out the United Kingdom and ROI.
Naturalvent Limited have four standard blade profiles of 34mm, 50mm, 75mm and 100mm but will manufacture any size blade required using CNC tooling. Most louvres are supplied polyester powder coated to a standard RAL or BS 4800 colour and gloss level however other finishes are available such as milled aluminium, syntha pulvin, PVF2, anodised, and other polyester powder ranges such as NCS ranges and timber effects.
Naturalvent Limited use their new computer programme to design solar shading to buildings in any location in Europe. Naturalvent Limited can confirm the shading effects to buildings given the location, elevation of the building and the size of the windows.
All louvres and solar shading systems are manufactured to order to suite the customers opening sizes with average lead times are approx three to four weeks depending on work loads at the time of issue.
For air to move into and out of a building, a pressure difference between the inside and outside of the building is required. The resistance to flow of air through the building will affect the actual air flow rate. In general, controlled natural ventilation and infiltration are driven by pressure difference across the building envelope. The pressure difference is caused by:
• wind (or wind effect);
• difference in air density due to temperature difference between indoor and outdoor air (stack or chimney effect); or
• combination of both wind and stack effects.
In most cases, natural ventilation depends on a combined force of wind and stack effects. The pressure patterns for actual buildings continually change with the relative magnitude of thermal and wind forces. The pressures due to each effect are added together to determine the total pressure difference across the building envelope.
The relative importance of the wind and stack pressures in a building depends on building height, internal resistance to vertical air flow, location and flow resistance characteristics of envelope openings, local terrain, and the immediate shielding of the building structure
Guidelines for natural ventilation
The following guidelines are important for planning and designing natural ventilation systems in buildings:
• a natural ventilation system should be effective regardless of wind direction and there must be adequate ventilation even when the wind does not blow from the prevailing direction;
• inlet and outlet openings should not be obstructed by nearby objects;
• windows should be located in opposing pressure zones since this usually will increase ventilation rate;
• a certain vertical distance should be kept between openings for temperature to produce stack effect;
• openings at the same level and near the ceiling should be avoided since much of the air flow may bypass the occupied zone;
• architectural elements like wingwalls, parapets and overhangs may be used to promote air flow into the building;
• topography, landscaping, and surrounding buildings should be used to redirect airflow and give maximum exposure to breezes;
• in hot, humid climates, air velocities should be maximised in the occupied zones for bodily cooling;
• to admit wind air flow, the long façade of the building and the door and window openings should be oriented with respect to the prevailing wind direction;
• if possible, window openings should be accessible to and operable by occupants;
• vertical shafts and open staircases may be used to increase and generate stack effect;
• openings in the vicinity of the neutral pressure level may be reduced since they are less effective for thermally induced ventilation;
• if inlet and outlet openings are of nearly equal areas, a balanced and greater ventilation can be obtained.
Naturalvent Limited is based on the West Midlands for easy access to all parts of the United Kingdom. Naturalvent Limited offer a supply only or full contract service including site survey's and project specific manufacturing drawings for the customers approval, bespoke manufacture and installation.
Naturalvent Limited's have expert staff, with a very experienced design team and expert installation engineers providing a service and quality to be very proud of. Should an architect or design engineer have an idea that in not currently on the market Naturalvent Limited will either adapt or modify existing designs or start from scratch and develop the architect’s idea from concept through to installation.
Naturalvent Limited also supply and install high quality extruded aluminium weather louvres, louvre screens, plantroom louvres, louvred doors, louvred penthouse enclosures, acoustic louvres and solar shading through out the United Kingdom and ROI.
Naturalvent Limited have four standard blade profiles of 34mm, 50mm, 75mm and 100mm but will manufacture any size blade required using CNC tooling. Most louvres are supplied polyester powder coated to a standard RAL or BS 4800 colour and gloss level however other finishes are available such as milled aluminium, syntha pulvin, PVF2, anodised, and other polyester powder ranges such as NCS ranges and timber effects.
Naturalvent Limited use their new computer programme to design solar shading to buildings in any location in Europe. Naturalvent Limited can confirm the shading effects to buildings given the location, elevation of the building and the size of the windows.
All louvres and solar shading systems are manufactured to order to suite the customers opening sizes with average lead times are approx three to four weeks depending on work loads at the time of issue.
Nationwide Louvre Company the louvre experts in solar shading, architectural louvre systems and acoustic noise reduction equipment
Nationwide Louvre Company the louvre experts in solar shading, architectural louvre systems and acoustic noise reduction equipment
Visit the Nationwide Louvre Company web site and see the large range of completed projects in the case study section. All products are manufactured to the customers requirements and sizes.
Visit the Nationwide Louvre Company web site and see the large range of completed projects in the case study section. All products are manufactured to the customers requirements and sizes.
Nationwide Louvre Company the louvre experts in solar shading, architectural louvre systems and acoustic noise reduction equipment
Nationwide Louvre Company the louvre experts in solar shading, architectural louvre systems and acoustic noise reduction equipment
Naturalvent Limited not just Naturalvent.
Naturalvent Limited not just Naturalvent.
Wednesday, 21 March 2012
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Wednesday, 8 February 2012
Wednesday, 1 February 2012
Adjustable blade Louvred Doors
NLC have just launched an adjustable blade louvred doorset on the market. The louvre blades can be closed in extreme weather conditions and can be opened up for ventilation in warm conditions. The closed position also allows added security.
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