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natural ventilation technical submission 0844 809 2509 | airtherm.co.uk | [email protected] The Natural Choice

natural ventilation brochure

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Natural Ventilation & Lighting brochure » Our Natural Ventilation & Lighting brochure is an introduction to the various systems we offer, detailing the health benefits, suitable applications, sectors, product information and technical specifications for each of the various systems and any complementary products available. It also includes a selection of case studies.

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Page 1: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

The Natural Choice

Page 2: natural ventilation brochure

natural ventilation & lighting systems

0844 809 2509 | airtherm.co.uk | [email protected]

Our energy efficient, high

performance systems including

natural ventilation, passive

ventilation & natural lighting

Page 3: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Contents

INTRODUCTION…..…….….……………………………………………………………………..………….…..

OUR NATURAL PRODUCT RANGE ………..………………….....................................................

SECTORS…………………………………………………………………………………………………………….

SECTORS…………………………………………………………………………………………………………….

WIND-iVENT…………………………………………………………………………………………………………

SOLAR-iVENT……………………………………………………………………………………………………….

PASSIVE iSTACK VENTILATION SYSTEMS……………..…………………….……….……….….......

NATURAL LIGHTING…...............…………………….…………………………....................................

SPECIFICATION………………………………………………………………………………………...............

DAMPERS……..………………………………………………………………………………………….............

ACTUATORS………..……………………………………………………………………………………….………

CONTROLS…………………......................................................................................................

DYNAMIC THERMAL MODELLING…...................................................................................

INSTALLATION…………………............................................................................................….

CASE STUDIES…………………................................................................................................

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13- 17

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Page 4: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Introduction to Airtherm Airtherm Engineering Limited supply a wide range of natural ventilation and lighting systems that can be designed and installed to suit virtually any application.

We provide for the commercial, educational, industrial and

private sectors and our products are increasingly popular in

schools, hospitals, offices and industrial buildings.

Natural Ventilation and Lighting systems make use of

nature's own power source to provide interior spaces with a

fresh air supply or natural daylight illumination or both.

Buildings utilising natural ventilation or lighting systems,

by their very nature, experience a significant reduction in

traditional energy running costs.

The Airtherm ‘Wind-iVent’ is a natural ventilation system

operating on established aerodynamic principles. As air

flows around the terminal itself, positive and negative

pressure areas are generated. On the positive side air enters

the louvres of the terminal and is directed down through the

internal vanes into the room below. The negative pressure

on the leeward side of the terminal, induces air to leave the

louvres, and stale air from the room below rises and is

expelled from the terminal. This process is aided by stack

effect, i.e. as cool air enters the windward side of the unit it

descends into the room below, and the warm stale air rises

in the ducts facing the leeward side providing a naturally

fresh environment.

Page 5: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Our Natural Product Range

Energy Efficient Heating, Cooling, Ventilation & Renewables from Airtherm Engineering Ltd »

Airtherm Engineering Ltd only use products of the highest quality and experienced engineers

with excellence in their field. We aim to provide specifiers and contractors with complete

confidence in our service by managing projects closely, adhering to strict safety guidelines,

demanding the highest quality workmanship and will continue to strengthen our business by

listening to customer feedback.

Health Benefits

By its very nature, the Wind-iVent (natural ventilator), Solar-iVent, (solar-ventilator) Passive-

iVent (passive ventilator) Lite-iVent (combined wind & light ventilator) and our X-iVent (cross

wall ventilation) systems all offer a natural solution to health problems commonly associated with

mechanical air conditioning units. Rather than re-circulating stale air (and possibly germs), the

natural ventilation system is continually removing stale air and replacing it with a fresh supply.

The system takes air from the roof level eliminating a proportion of pollution, including hazardous

carbon monoxide from roadside traffic that is a common issue with low level ventilation methods.

Suitable Applications

Our natural ventilation products are suitable for many applications including schools, offices and

hospitals. They are also used in private, local authority and commercial premises including

gymnasiums, colleges, universities, reception areas, store rooms, changing rooms, libraries,

meeting halls and are also suitable for specialist applications. They provide an ideal solution for

delivering a 'fresh' air supply to areas where conventional room ventilation is difficult due to

critical noise issues.

The Ideal Solution

Our natural ventilation systems offer architects and consulting engineers not only a natural and

environmentally-friendly solution but an acoustically efficient, economical and aesthetic answer to

ventilation needs.

Page 6: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Industrial Our flue and chimney exhaust systems are the obvious products utilised

by the industrial sector, however our line of natural ventilation and

lighting systems are proving increasingly popular solutions in industrial

buildings and factories throughout the UK.

Our kitchen canopy system sizes are suited to industrial applications as

well.

Leisure

Our natural ventilation and light systems are ideally suited to the leisure

sector where a fresh air supply is essential or bright illumination of large

spaces is required.

Our flue and chimney systems are also ideal to handle any exhaust

requirements demanded by the large boilers often used in leisure centres.

Popular applications include gymnasiums, sports halls and health clubs.

Healthcare

Natural ventilation and lighting is a very popular solution in the health

care sector in hospitals, nursing homes and other institutions. Providing

fresh, breathable air and natural light for patients and health care

workers has numerous benefits to health, recovery and staff

productivity.

Similarly, our kitchen canopies offer a safe, hygienic working

environment where food can be prepared quickly and efficiently without

the worry of external contamination.

Our Sectors

Page 7: natural ventilation brochure

natural ventilation technical submission

Commercial

Our complete product range is ideally suited to applications

throughout the commercial sector. Increasingly, office buildings are

benefitting from new, greener, more efficient technologies such as

natural ventilation, natural lighting, heat pumps, solar pv and our

energy-saving air conditioning units.

Our range of exhaust products, from flues and chimneys to kitchen

extract canopies, are also suitable for commercial installation.

Educational

Our product range is perfect for the educational sector. We have found

schools and colleges are often keen to utilise the latest green and eco

technology, not just to lower costs but to act as a living experiment for

pupils and parents to experience.

Our natural ventilation systems are a great solution for classrooms

and the daylight supply from our natural lighting products are ideally

suited for the daily periods of occupation.

The growing use of heat pumps and solar pv technology to generate

hot water and electricity while reducing a buildings carbon footprint

are also widely employed as part of a whole building strategy.

Our flue and chimney exhaust systems are also suited to the

buildings heating demands and kitchen canopies can be installed

where on-site cooking or food preparation facilities are used.

Retail

Our efficient, high performance kitchen canopies are ideal for

restaurants and food based retail outlets where food must be

prepared quickly, hygienically and safely. They are used throughout

the industry by outlets ranging from the small to large.

Our air conditioning units are, traditionally, widely used throughout

the retail sector. Our growing range of greener, more efficient and A-

rated energy products are a stylish complement to any shop or as a

replacement for older, less efficient models.

Our Sectors

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Page 8: natural ventilation brochure

natural ventilation technical submission

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Wind-iVent - Natural Ventilation Systems

Our natural ventilation solutions consist of two synchronizing devices: a roof-mounted natural

ventilation turret and a wall-mounted unit.

Louvres within these units divert external fresh air into the internal spaces creating a stack effect

which in turn removes stale air or CO² from the space. Airflow, temperature and CO² within the

system are monitored and controlled via pre-set sensors within a given space.

The Airtherm “Wind-iVent” is a natural ventilation system operating on established aerodynamic principles. As external wind flows around the terminal itself, positive and negative pressure areas are generated. On the positive side air enters the louvres of the terminal and is directed down through the internal vanes into the room below. The negative pressure on the leeward side of the terminal, induces air to leave the louvres, and stale air from the room below rises and is expelled from the terminal. This process is aided by stack effect, i.e. as cool air enters the windward side of the unit it descends into the room below, and the warm stale air rises in the ducts facing the leeward side.

The size and type of application is virtually limitless. Additional roof-mounted turrets and wall

vents can be added for larger applications and rooms can be individually monitored and controlled

as necessary.

The features and advantages of such a system include:

•A fresh air supply for workers - proven to increase productivity & reduce staff sickness

•Naturally ventilated - reduce your energy costs and carbon footprint without the need for

mechanical ventilation

•Night time purge of stale air - creating a fresh working environment for staff the following

morning

•Better control of building temperature and CO² levels

•Free cooling

Page 9: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Solar-iVent - Natural Ventilation Systems

How It Works

The Solar-iVent system benefits of a passive stack and an active stack system, similar to our

Wind-iVent range, but with the bonus of a free power source. Our Solar-iVent terminal delivers

fresh air and discharges unwanted stale air (CO²) from internal spaces, effectively eliminating

the need for traditional methods. The system incorporates a solar powered boost-fan which

provides additional 200l/s, 400l/s or 700l/s of fresh air within the compartment below.

The photovoltaic panel collects daylight and convert this to electricity that is regulated via the

charge controller which charges the battery pack. The battery is charged whenever there is

enough available daylight to do so and even generates power on a dull day. The Solar-iVent

range have been designed to supply fresh air 24 hours a day.

The low powered fans are set as standard to simply switch on/off at maximum dampers or as an

optional feature they can be speed controlled variably in conjunction with the damper positions.

Standard Components

☼ 12v or 24v DC Power Supply.

☼ 40w or 60w solar cell.

☼ DC carbon fibre battery Pack.

☼ Power management module.

☼ Low powered DC fan unit - 200L/s, 400L/s and 700L/s

☼ iVent control systems operate with peripheral (wind, rain,

temperature) devices to suit any and temperature application.

Page 10: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Passive iStack Natural Ventilation Systems

The passive stack ventilation systems shall operate on well-established aerodynamic principals.

The manual windows at high & mid-level in each space will provide adequate ‘fresh’ input air at a

rate that complies with Building Bulletin 101 and CIBSE guidelines and provide no less than 8

L/s per person via means of positive pressure against the face of the building structure. The

positive input air is drawn across each area and through the unit by a negative extract pressure at

the passive istack louvre face at the far side of area. Contaminated Co2 laden stale air is then

drawn through the Wind-iVent passive stack mounted at roof level.

The system should be intelligently controlled via room mounted temperature and Co2 sensors,

with occupancy Co2 levels taking presidency over that of temperature.

The passive stack roof ventilation terminals shall be constructed from fully welded corrosion

resistant type 1050 AH14 pure aluminium of 2-3mm thickness, and highly resistant to weathering

as well as chemical attack.

The units will be manufactured in accordance with BS EN ISO 9001, and to suit the architectural

and design parameters as indicated in the design specification and drawings. Internal airways are

to be protected by incorporating anti-bird mesh to the terminal louvers.

The units shall be powder coated to the RAL colour as indicated within the design specification.

If required the independent airflow testing & acoustic performance of the roof units from a

reputable source such as BRE or BSRIA to show compliance can be issued following order

placement.

Page 11: natural ventilation brochure

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Natural Lighting Solutions

Day Lighting systems actively capture daylight from the rooftop and

project through a highly reflective tubing to where it’s needed. Solatube

light tube system uses the most advanced technologies to ensure that

the efficiency and performance of their systems is unrivalled.

Extension tubes are available in lengths of 610mm (straight) or 380mm

long incorporating a 0-30° adjustable angle along with the new 0-90°

angle unit. All reflective tubes – including adjustable tubes – are

manufactured from 99.7% reflective Spectralight Infinity material,

allowing tube lengths of up to 15 metres for the SolaMaster 330 DS.

The new Solatube 160 DS, 290 DS & 330 DS (250mm , 350mm and

510mm diameter respectively) set performance standards never seen

before. These systems feature patented Raybender® 3000 Technology

and LightTracker™ Reflector to deliver unprecedented levels of light –

higher even than previous Solatube models. Highly efficient and simple

to install, the Solatube Brighten Up® Series can transform dark or

windowless areas – ideal for residential applications such as kitchens,

bathrooms, hallways, stairwells, utility rooms, living areas, or may be

installed in multiples in larger, open workspaces such as corridors,

offices, consultancy rooms, store rooms, and washrooms.

Page 12: natural ventilation brochure

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Natural Lighting Solutions

DIFFUSER OPTIONS

The Brighten Up® Series offers a choice of

diffusers that incorporate Solatube® proprietary

lenses for highly effective light distribution. Each

features a sleek low-profile dress ring. These

attractive and stylish double-glazed diffusers

integrate seamlessly into most ceiling surfaces

with no visible fasteners.

VUSION™ DIFFUSER

The Vusion™ diffuser fits neatly to

the ceiling and delivers outstanding

natural light diffusion

through a prismatic lens.

OPTIVIEW® DIFFUSERS

The technologically advanced

OptiView® diffuser uses a multiple

Fresnel lens system with a stunning

architectural look to deliver crystal

clear daylight.

Available in three designs.

White Trim with OptiView® diffuser

Stainless-Tone with OptiView®

diffuser

Frosted Shade with OptiView®

diffuser

Page 13: natural ventilation brochure

natural ventilation technical submission

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High Capacity - Our natural ventilation terminals are

perfect for both natural, passive and solar powered

options, with all four sides possessing a guaranteed

50% free area allowing a more efficient operation.

High Performance - With the addition of internal

vertical channels and integrated water defence, our

standard terminals can be converted into high

performance Class A rain protection (over 99%

effective).

Internal & Trunk – Housed inside the terminal is a full

height divider which keeps fresh and stale air separate.

Both the terminal base and ductwork below are lined

using a Class ‘O’ type 12.5mmTHK acoustic foam. The

foam offers an ideal acoustic characteristics and the

necessary fire performance. Additional acoustic layers

can be applied to conform to any design criteria

required. The roof lid is also acoustically lined to

prevent unwanted noise transfer from heavy rain

droplets, which can be amplified into the occupied

space below. This method also avoids condensation

forming on the underside of the roof with cold air

entering the terminal and hot stale air rising from below.

Specification

Material: Extruded Aluminium

Construction: Blade mitres fully welded

Frame: None – internal supporting frame

Fixings: None – base suited to raised cill or flat

Sizes: Range from 300mm – 6.0m

Height: 0.5m to 3m high

Finish: Standard – mill finish aluminium

and option for powder coating

Page 14: natural ventilation brochure

natural ventilation technical submission

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Standard features

Ultra high shut off

Independent tests show no leakage below 10Pa;

the pressure most likely to be found in natural

ventilation installations.

Excellent thermal insulation

With a theoretical U value of less that 1 W/m2,

uPVC volume control dampers lose.

Options specified

Belimo /Siemens modulating actuators

factory fitted

The use of Belimo SM series modulating

actuators allows dampers to be set fully open,

fully closed or anywhere in between, for

maximum adjustability and assurance of

comfort.

uPVC volume control dampers

Ultra high shut off

In independent tests, large format uPVC

volume control dampers yielded leakage

results normally only achieved by dedicated

shut off dampers.

The VCD sent for testing had a nominal size of

1000mm x 806mm, the large size tantamount

to our confidence in the damper.

With even 10Pa rarely being exceeded in

natural ventilation situations, it is clear how

uPVC volume control dampers can enhance

the efficiency of your new natural ventilation

system.

Page 15: natural ventilation brochure

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Actuators

Belimo 24v 10nm Actuator

Siemens 10nm Actuator

Window Control Actuator

The actuator is controlled by means of a standard control signal DC 0 ...

10 V. It opens to the position dictated by this signal. The measuring

voltage U allows the damper position (0 ... 100%) to be electrically

indicated and serves as a follow-up control signal for other actuators.

Manual operation is possible with the self-resetting pushbutton (the

gearing latch remains disengaged as long as the pushbutton is pressed)

Electronic motor driven actuators for three-position and modulating

control, nominal torque 5 Nm (GDB), 10 Nm (GLB) or 2 Nm (GSF),

mechanically adjustable span between 0...90°, pre-wired with 0.9 m long

connection cables.

For damper areas up to 0.8 m (GDB) / 1.5 m (GLB), friction-dependent for

GSF…1 2 up to 0.3 m2

Suitable for use with modulating controllers (DC 0...10 V) or three-

position controllers for air dampers or air throttles.

The modulation of the window free area will be in tandem with that of

the ventilator stack for each space via 24vDc chain driven actuators,

having quiet operation. The external window openings will operate in

conjunction with the same control signal as the damper stack openings,

with the exception that the windows will operate at five positions as

opposed to the 10 positions of the ventilator actuators to minimise

window motor wear and ongoing maintenance of the DC chain driven

actuators.

Page 16: natural ventilation brochure

natural ventilation technical submission

0844 809 2509 | airtherm.co.uk | [email protected]

Natural Ventilation Controls Our unique range of natural ventilation controls and intelligent sensors have been developed to deliver optimum control and ease of use of all our natural ventilation systems.

We can supply traditional combined sensors (with 0/10v outputs) or sensors with inbuilt BACnet communications (which supply a modulating control signal to end devices such as window actuator controllers). Our sensors are specifically designed to be simple to use.

We employ push button overrides, LED status indications and clear labelling to make things easier for the end users with the temperature control, the room set point for the control of the ventilation dampers can be adjusted in 10C increments between 210C and 280C with a seasonal change over and a night cooling option if a time clock or BMS time signal is available. Localised Heating can also be controlled and is set 20C below the room set point.

Temp and CO2 Sensor Room Temp Sensor

Our Range of Control Solutions

Standalone Sensors

* Room Temperature and C02 Sensor

* Room Temperature and RH Sensor

* Room Temperature and RH Sensor with manual

override

* Standard room Temperature Sensor

Intelligent Sensors

* Intelligent BACnet Room Setpoint Unit

* Intelligent Temperature and C02 BACnet Sensor

* Intelligent Temperature BACnet Sensor with

manual override

* Intelligent Temperature and C02 level Indicator

Standalone Controllers

* Temperature and C02 Room Controller

* Temperature and C02 Room Controller with

manual override

* Temperature and C02 Sensor controller with

carbon monoxide indicator.

* Temperature room Controller with manual

override

* Temperature room Controller

Peripherals & Devices

* Chain Window Actuator

* Combined Weather Sensor

* Digital alarm Unit

* Digital Extension Timer

* Power supply Unit with Time Clock

* Window Control Module with Power supply.

Page 17: natural ventilation brochure

natural ventilation technical submission

Standalone Controllers Standalone Controllers

CTCml:

Temperature and CO2 Sensor Controller with manual

override and CO2 Level Indicator

CT:

Temperature Room Controller

CTC:

Temperature and CO2 Room Controller

CTm:

Temperature Room Controller with Manual Override

CTCm:

Temperature Room and CO2 Controller with Manual Override

CTCI:

Temperature and CO2 Controller with CO2 level

indication

Page 18: natural ventilation brochure

natural ventilation technical submission

Standalone Controllers

Pre-wireable base and plug-on fascia plate

assists in easy, time saving installation

0/10 VDC Heating Signal

0/10 VDC Cooling/Ventilation Signal

Frost Protection

Room Temp Set Point Adjustable

19°C to 26°C

Room CO2 Set Point Adjustable

900ppm to 1600ppm

Our unique range of standalone controllers can control Ventilation Dampers or Automated Windows together with localised Heating, via on board, Temperature or Optional CO2 Sensors to suit the requirements of each specific application. These Controllers can be linked to either a time clock or receive a time signal from a BMS to activate the optional Night Cooling programme (Night Cooling only available with the Manual Override options).

“Our room sensor range has

been specifically designed for

ease of use by the client”

Page 19: natural ventilation brochure

natural ventilation technical submission

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Temperature Control:-

* The room set point for the control of the Ventilation Dampers/Automated Windows can

* be adjusted in 1°C increments between 21°C and 26°C with a seasonal change over

* and a night cooling option if a time clock or BMS time signal is available. Localised

* Heating can also be controlled and is set 2°C below the room set point.

Manual Override (optional):-

* Each room device has manual override capabilities which give the end user control of

* the ventilation strategy to suit the room application. The device consists of two push

* buttons and three LED lights, the push buttons enable the end user to open or close

* the ventilation as required, the LED’s give an indication that the system has either been

* overridden or is in Auto mode. Once the system has been overridden it will stay in that

* mode for 30 minutes, after this time the system will revert back to Auto mode.

CO2 Indication (optional):-

* Each room device can also be fitted with a further 3 LED’s to identify the level of CO2

* within the space; these are green, amber and red. With green being healthy and red

* being high levels of CO2 ppm`s.

Night Cooling:-

* To enable the Night Cooling pre-programmed software, the device needs to be in

* (Night Mode) and the night cooling enabled, this then cools the building to just below

* the room set point. When the Time Switch is in (Night Mode), by holding down the

* open/close buttons this will enable this mode to be turned on/off. (Indicated by the

* Auto LED ON or OFF).

Summer/Winter:

* The Summer set point can be selected to be below the Winter set point, this is 2°C

* below that set value on the dip switches. To select Summer mode, in (Day Mode) hold

* both the open/close buttons down for 5 seconds, lights flash, push the open button for

* summer mode, or close button for winter mode.

Standalone Controllers

Page 20: natural ventilation brochure

natural ventilation technical submission

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Window Control

230V Fused Spur

Window

Actuator

Room Controller ZONE 1

ZONE 2 ZONE 3 ZONE 4

The Window Control Module contains a 24v DC Power Supply and an iWAC module

per Window Actuator that controls via a 0/10 VDC positioning signal from a suitable

controller. The WCM features an intelligent ‘self stroking’ operation and controls the

24v DC window actuator in steps to prevent noise disturbance to end users. The

Window Control Module allows only one window to operate at a time. This saves the

expense and space in only needing a DC power supply rated for the largest actuator

(maximum 3 Amp per controller) to be operated.

Window Control

Page 21: natural ventilation brochure

natural ventilation technical submission

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Dynamic Thermal Modelling

We can offer full dynamic thermal modelling

using the market leading software. This

software utilises building integrated modelling

whereby the same software can be used for

multi-faceted studies.

Airtherm Engineering Limited can carry out a

thermal model of the building to ensure the

ventilation conforms to building bulletin 101.

We offer full dynamic thermal modelling services using the market leading software IES<VE>

Pro. This software utilises building integrated modelling whereby the same software can be

used for multi-faceted studies

Natural ventilation modelling

We can model complex natural ventilation strategies making due allowance for:

Wind and buoyancy driving pressures

The action of occupancy behaviour regarding window opening

Automatic controls based on temperature or respiratory CO2 levels

Night cooling and thermal mass

Wind-iVent and natural ventilation systems and shafts

This type of modelling is far more robust than hand calculations or other more simplistic

software methods and it removes project risk in terms of under performance or over design.

Let us test your designs. We can advise on:

The required number and size of ventilation openings / windows

The value of night cooling and exposed thermal mass

Appropriate strategies to meet BREEAM comfort criteria

The effectiveness of purpose designed ventilation shafts and air transfer networks

Airtherm Engineering Limited can carry out a thermal model of the building to ensure the

ventilation conforms to building bulletin 101

Natural ventilation modelling

We can model complex natural ventilation strategies making due allowance for:

• Wind and buoyancy driving pressures

• The action of occupancy behaviour regarding ventilation openings

• Automatic controls based on temperature or CO2 levels

• Night cooling and thermal mass

• Wind-iVent and other natural ventilation systems

This type of modelling is far more effective and removes the risk of under performing ventilation

systems within the building

We can advise on:

• The required number and size of ventilation solutions such as terminals, wall ventilation and

windows

• The value of night cooling and exposed thermal mass

• Appropriate strategies to meet BREEAM comfort criteria

We use thermal modelling to test if the proposed building form and construction will enable natural ventilation to be utilised. We can include the appropriate internal heat gains from people, lighting and equipment for your building type and test different types of openings to see if thermal comfort can be maintained. If overheating does occur we can assess alternative construction materials, shading devices, opening strategies and even management options to improve the comfort levels in the building. Using thermal modelling software enables us to evaluate the design of natural ventilation, seeing if singled sided, cross or stack ventilation is the most appropriate solution, demonstrating the ventilation rates achieved in each space.

Our specialists use dynamic thermal modelling software to see how your building will perform, before it’s even built! Using award winning IES Virtual Environment software we can evaluate: Thermal comfort Energy consumption & CO2 emissions Overheating Passive design strategies Ventilation strategies Internal daylight Solar gain analysis Glare analysis Overshadowing Building fabric choices Renewable energy feasibility Building regulations compliance (Part L & EPCs) BB101 compliance

Dynamic Thermal Simulation A dynamic thermal simulation encompasses all the design parameters that influence the way in which a building responds to the external environment. Users can create a model that replicates the exact physical form of a building, incorporating all aspects of the construction specification and the internal heat gains to simulate the anticipated internal conditions in accordance with industry recognised external weather data

Page 22: natural ventilation brochure

natural ventilation technical submission

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Installation

Units can be installed on almost every roof including flat, pitched and even on the roof apex

where appropriate. The roof fabric of commercial applications has bearing on the openings and

roof plates that are required to install the systems competently. We offer a roof plate solution

for all situations, including self mount flashings and curb mount flashings with suitable

upstands. The options for each project will be discussed at the design stage in detail, including

the necessary openings that are required to suit our systems.

The ductwork for the units can pass through any floor level to transfer air within the building.

The units are capable of being controlled and linked to the buildings BMS to ensure dampers

are fully closed in the event of a fire. ‘Wind-iVent’ units can be controlled via master control

panels, room temperature sensors and CO² sensors.

We can also offer many bespoke natural ventilation solutions to clients. Our highly skilled

work force adapt at all types of light to medium metal fabrication including stainless steel,

aluminum and mild steel. GRP moulded products are also available, most suited to circular

formation.

The most common range starts from 500mm to 1200mm and can be combined with a natural

lighting system formally known as the ‘Lite-iVent’ . The Lite-iVent (Light & Vent) system uses

both the wind and sun, and offers a ZERO carbon footprint which has no impact on the

environment.

Our installation engineers are competent in their field and carry all necessary site certification

with CSCS cards, IPATH, PASMA and scaffold towers. Our engineers strive towards excellence

in each and every project they undertake.

Page 23: natural ventilation brochure

natural ventilation technical submission

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SOLARSTORE MORRISON STORE

• On this particular project the

solar-vent turrets work in harmony

with the controlled wall units

creating a stack effect.

• The Solar-iVent system allows

increased ventilation in summer

and at times of high occupancy,

and also improves the

effectiveness of night-time

cooling.

CROSSVENT SYSTEMS OUR LADY QUEEN SCHOOL

• This new build school project is the

amalgamation of two local

Primary Schools

• The design of the school

incorporates various environmental

features to provide a low carbon

solution, including natural

ventilation & lighting systems

NATURAL VENTILATION ABBEYWOOD SCHOOL

• Penthouse Passive Stack Terminals

• uPVC Volume Control Dampers

• 32no aqua blue ventilation turrets

• Insulated internal diverters

• Internal bird screen

• Access lockable doors

CASE STUDIES

Page 24: natural ventilation brochure

natural ventilation technical submission

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Naturally Sustainable, with a vision