ENVIROTEC AIR CURTAINS
Government legislation is highlighting to businesses the poor energy efficiency characteristics of many buildings. Although Building Regulations Part L2 includes measures that help minimise the energy consumed in air conditioning and ventilation systems, losing conditioned air through entrances and loading bays can severely undermine these efforts.
By installing a correctly sized Envirotec air curtain at the entrances to a building, the conditioned air that would otherwise be lost will be contained within the building. Reducing this conditioned air loss will greatly reduce the load on central air conditioning plant nd thereby increase the building’s overall energy efficiency.
Envirotec produce a huge range of air curtains to suit most installations. Numerous styles, shapes and sizes are available, from esthetically pleasing circular units designed for on-view applications, to fully-recessed models that suit suspended or false ceilings. Where space restrictions or aesthetics prevent the use of an over-door design, bespoke vertical units can be provided. Different heating mediums can also be incorporated, such as low or medium pressure hot water coils, to steam and electric.
Enetec Digital Controls
Controlling the air curtain is easily achieved, with a comprehensive range of analogue and digital controls from which to
Simple on/off controls can be provided or fully specified packages that offer variable fan speeds, stepped heater outputs, thermostat or automatic control governed by the Building Management System. Alternatively, components can be supplied with a simple interface allowing the customer to provide their own controls package.
Striving for even greater energy efficiency, Envirotec developed the “Enetec” digital controller that can minimise the energy used by the door curtain. Enetec is a purpose designed control system which maintains tight control of space temperature. The heating elements within the air curtain are burst fired with electricity to optimise their power
consumption, allowing the output to be proportionally controlled, supplying the exact amount of energy required to maintain the space temperature.
Independent testing by BSRIA has shown that installing the Enetec controller on an air curtain with electric heating can reduce annual running costs by 30% to 50%. This can represent a return on investment after a year to 18 months. Although primarily developed to suit air curtains with electric heaters, Enetec can also be installed with LPHW heated units.
Enetec can be configured either as a “stand alone system” or for control via a Building Management System, being factory set to match customer’s requirements.
Envirotec’s Enetec controller is currently the only air curtain controller that has been approved for the Enhanced Capital Allowance (ECA).
The appearance of an entrance or atrium can be complemented by installing aesthetically pleasing air curtains that reflect the architect’s vision. Envirotec specialises in working with architects and end users, to develop bespoke designs that may borrow design elements from the standard range.
Envirotec and Toshiba have pooled their design expertise in air-curtain technology, refrigeration and associated controls to form a partnership that offers a range of heat pump air curtains.
Heat Pump technology provides an effective method of transferring heat from the atmosphere to where it is most needed, while using the smallest amount of energy to drive the system.
For ‘high profile’ atriums or applications without suspended ceilings, Envirotec offers a range of attractive, yet functional, ‘cased’ air curtains designed for exposed installation.
In applications where the air curtain is installed in the ceiling void, Envirotec provides the following range of air barriers and air curtains.
Envirotec designs each vertical air curtain to suit individual applications and this ‘column’ arrangement offers some clear advantages.
Envirotec produces bespoke air curtains for architects, consultants and end users. Envirotec has over 40 years’ experience in producing air curtains to complement the unique features of an entrance doorway.
Designed primarily for ‘on view’ installations in high profile atriums, Envirotec air curtains incorporate innovative design to offer an attractive shape, without compromising their performance.
FREE CIBSE Accredited CPD – Correct Selection & Application of Air Curtains
This CIBSE approved Technical presentation looks at the Factors Affecting Air Curtain Performance and explains the correct method of Air Curtain selection to provide an effective solution. Factors considered are Building design, Building leakage / extract rates, Surrounding geography, Prevailing weather conditions, Installation of air curtain, Leaving air
temperature/velocity & Method of control
HASL offers a FREE of charge CIBSE accredited CPD. This can be arranged either in your office or on site. If you are interested in a CPD please contact: [email protected]