Cooling & Heating Sales Ltd

Hi-Velocity Mini Duct Systems
As an alternative to traditional Underfloor Heating, Warm Air Heating or Central Heating Systems
Hi Velocity mini duct systems offer the perfect solution for Indoor Air Quality in the home and office in london or anywhere in the UK, as the new choice for traditional underfloor heating, warm air heating or central heating systems; click here to see the Hi Velocity mini duct systems product details.

The vast range of applications includes domestic properties, offices, conference facilities, professional training facilities, factories and commercial kitchens. retail outlets, server rooms, hotels, laboratories, pubs and clubs, restaurants, doctor’s surgery, hospitals, leisure centres. art studios, schools and colleges. residential care homes.

Mini Duct Systems are well suited for industrial commercial or domestic markets, the air handler can be connected to existing boilers or inverter driven Heat Pump condensing units and chilled water heat pump or ground source heat pumps. By using the Condensing units the system can now deliver cooling and heating, cooling can either be fitted at the time of initial installation or as a retrofit at a later date The running costs of the heat pump Condensing Units are far more cost effective compared with traditional gas boilers and in many cases this is the discreet manner.

The Hi Velocity Systems utilizes a modular Air Handler connected to a series of small flexible ducts, eliminating the need for either traditional radiators or under floor heating and systems. The most important benefit of using mini duct heating and cooling system is the discrete way the heated air is delivered giving even temperatures without draughts.

Additional to heating and cooling, up to 100% fresh air ventilation can also be introduced into the air handler either directly or via a heat recovery system. A great choice instead of having to use the Underfloor heating, warm air heating or central heating systems, whether you are based in london or any where in the UK.

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Hi-Velocity Systems versus the traditional Heating or Cooling system.

CENTRAL HEATING SYSTEMS

A normal wet heating system delivers heated water around a loop of insulated copper pipework connected to delivery points, ie the radiators. Each of the radiators is made up of fins of metal that of course heat up when hot water is passed through them. How do these actually heat up a typical room? Using convection is the simplest answer Convection is why fire travels much faster upward than to the sides so if you are looking to heat the roofspace then radiators are the perfect choice, if not read on…. In other words the radiators only heat the space directly around them as they have no way of actually drawing the cooler air from around the room into path of the radiators except for the convection effect, any air movement within space caused by people moving around or separate ventilation systems will help to distribute the air, generally though hot spots will occur with the temperature around the radiators being much higher than areas further away particulally at low level .

Typical Scenario

Imagine this scenario in a typical office space of say 10m x 6m in size with a 2.5m ceiling. You would expect to see possibly 4 radiators distributing the heat, positioned at 1/3 and 2/3 intervals along both of the longer walls. Now imagine the air in the middle of this room, how long does it take for this air to change temperature? If there is no air movement in the room then the time taken to heat this small portion of the space would be quite considerable. Radiators rely on other sources to move the air within the space in order to achieve an even temperature throughout.

Problem: Anyone sitting near a radiator will get too hot.

TRADITIONAL COOLING SYSTEMS

The “Norm” for the last 25 years or so has been the use of Ceiling Cassette or Wall mounted split systems . In our typical 10m x 6m Space a cooling requirement of some 7.00-10.00 kW’s would be necessary to reduce the room temperature sufficently in order give a comfortable environment. The cheapest way would be a have a single unit positioned centrally within the space or possibly a pair of units each delivering half the required duty.

How do these systems actually work?

All traditional Air Conditioning fancoils have an intake point and a exhaust point with a fan motor built in and used to create the air movement, air within our space is drawn towards the fancoil and taken in at the intake point where it is pulled across a refridgerant coil and then blown out at a reduced temperature.

Problem : If any occupant in the room is unlucky enough to be sitting in the path of the cold air being discharged they will either turn the system off or complain.

SOLUTIONS:

How does the Hi-Velocity System overcome the common problems associated with traditional heating and cooling systems.

In Simple terms

If you consider a wall mounted unit or a radiator as a single point of distribution for the heating or the cooling, then consider that a similar sized 10.00kW’s Hi-Velocity System will have up to 45 points of distribution. The result of this multipoint distribution is even temperatures throughout and of course no draughts. The occupants feel comfortable at all times and never really know how the temperature in the room is being achieved.

Other Benefits of the Hi-Velocity System

Hi-Velocity has the ability to not only control the temperature of the room it has another major benefit, the abilty to introduce fresh air…. Even if your room is at the right temperature, if the air is stale the occupants will feel uncomfortable. To take this a stage further Hi-Velocity systems manufacture an air purifier that offers the occupant TOTAL INDOOR AIR QUALITY.With No draughtsWith No hot or cold spots

How much value do you put on working/living in a comfortable environment ?

Can Hi-Velocity be installed anywhere?

Is Hi-Velocity expensive compared to traditional systems? Are High-Velocity systems noisy? Can Hi-Velocity systems deliver just heating if we don’t need cooling? Can I see a Hi-Velocity system working?

The answers to these questions and many others can be found at our website www.coolingandheating.info

We are holding ½ day seminars at the Canadian High Commission in Central London February/March and will be happy to send you a free invitation.