Home / Air Handling Units  /  Air Handling Units Holland Heating air handling units are modular construction and are fully customised to provide the required performance for any application with emphasis on air quality and reduction of the energy required to cool, heat, humidify and supply the conditioned air.  Units can be manufactured for internal or external siting and have a high corrosion resistance. Heat recovery options include cross flow plate heat exchangers, rotary wheel heat exchangers and counter flow heat exchangers. Units are easily maintained through generously sized access doors. The SQ range can be supplied with plug and play controls. All models are Eurovent certified and in accordance with EN1886 and EN13053. Our AHUsWhat types of air handling units do we offer?We deliver a varied and diverse range of Air Handling Units (AHUs) developed to meet your specific needs. The below will give you a flavour of the types of air handling units that we can offer you.

Our air handling units are delivered in various case sizes with airflow from 0.2m³/s to 50m³/s. As you would expect, the larger the flow rate required, the larger the case size but we always aim to deliver maximum system output from the smallest possible footprint whilst providing adequate space for maintenance.We operate with a 'less-is-more' ideology and always strive to manufacture the most compact AHU we can given the required design parameters. This makes them ideal for indoor installation (internal installation) and for outdoor applications (external installation) where space is tight and of paramount importance. AHU unit configurationsWhether you require indoor or outdoor AHUs, side-by-side or stacked AHUs, roof or floor-mounted AHUs we can assist. Configuration is no worry to us and as long as specified at initial tender, we can adapt and develop your air handling unit accordingly.AHU components / optionsBelt drive fan section with optional run and standby facility or motors external to the air streamDirect drive fan section (plenum or centrifugal type, EC or high efficiency AC, PM motor option)Maintenance access, air diffusion space, turning plenumsAttenuationParticulate filtration (panel, bag, rigid)Carbon filtration for odours and contaminantsHigh efficiency particulate air filter Heating coil (water/steam)Cooling coil (water/DX gas)Electric heaterIndirect and direct gas heaterSteam humidifier (direct steam or self-generating – electrode boiler

, resistive, gas)Modulating or shut off damperMixing/exhaust boxPlate heat exchanger (with or without bypass for free cooling) can be aluminium, coated aluminium, plastic, etc.how much copper is in a outside ac unitThermal wheel (sensible, hygroscopic, desiccant, enthalpy)Heat pipeRun around coilsInlet/Outlet with ducted connection/louvre/hood/acoustic louvreAdiabatic cooling or humidificationIntegrated controlsN+1 redundancyAcoustically and thermally insulated casing as standard, with further acoustic and thermal optionsFully welded galvanised steel box section frame work as standard, stainless steel and aluminium optionsInterior lighting and viewing optionsRaised or specially designed base frame optionsFixed (but accessible) or removable drain tray options in galvanised or stainless steelNon standard colours availablePitched roof as standard on externally air handling unit manufacturers in uk

mounted air handling unitsIntegrated air to air heat pump for cooling or reverse cycle operationFully packaged ‘plug and play’ optionAHUs with complete flexibilityA choice of configurations is offered to give real operating flexibility to suit different applications and operator preference throughout all of our air handling units.ac unit a coilOur Enviropack™ R410A refrigeration package is available throughout all our air handling units, providing the option for cooling (10kW – 235kW) and heating (9kW – 218kW). Available in single and dual circuits, Enviropack™ delivers up to 4 stages of cooling or heating across multiple skid platforms. A single control panel manages both the refrigeration package and the AHU. Contact our AHU sales engineers for further informationPage not found, sorry  The page you requested could not be found. Imofa UK employs various forms of heat recovery in the design and manufacture of its bespoke air handling units maintaining air-quality standards whilst recovering as high a percentage as possible of the heat from the exhausted air stream.

Recovery of heat from the exhaust air in balanced ventilation systems and it’s efficient transfer to the supply fresh air offers major potential for energy savings, contributing significantly to building energy efficiency and the reduction of carbon emissions… No moving parts, built up of alternating layers of plates through which the heat is transferred between the separated supply and exhaust air streams. Energy savings up to 80% Crossflow Two heat exchangers can be arranged in a cross / counter flow pattern to increase efficiency. Energy savings up to 95% Counterflow Optimised efficiency due to extended heat transfer surface. Rotary heat exchangers are also employed as a well proven and efficient means of heat recovery providing up to 80% energy savings. The rotating wheel (rotor) is made up of an air permeable heat transfer matrix which picks up heat from the exhaust air and releases it as the wheel passes through the cooler supply air. Depending on the air conditions, and using desiccant coated rotors the heat recovery wheel can also transfer moisture providing both sensible and latent energy recovery.

A run around coil heat recovery system consists of two matched coils, one located in the exhaust contaminated air stream and the other in the supply fresh air stream. The heat exchange medium (usually water) is pumped in a continuous loop through the coils in a single direction at a constant rate.Air Zone designs and manufacturers indoor and outdoor custom energy recovery units utilizing Fixed Plate Heat Exchangers, Energy Recovery Heat Wheels and Heat Pipes from the best suppliers in the world. These units are manufactured to high quality standards in either 2" or 4" Double wall or Septum casing design.The Ecodesign Regulations for ventilation units – for residential and non-residential environments – were published in 2014, and established minimum requirements for the products within their scope. It is important to understand which products come under the non-residential banding and what this will mean for the sector in the long term. As of January, all ventilation and fan products have had to comply with the Energy-related Products (ErP) Directive and must be labelled with the relevant  CE marking.

The directive is designed to drive carbon-emission reductions and help the EU achieve its 20-20-20 energy and climate change objectives. A Semco wheel for heating and cooling recovery For manufacturers, the directive requires a change in strategy for how products are designed and how they are tested against certain parameters. Products that fail to meet the energy efficiency criteria will not receive a CE mark, so manufacturers will not legally be allowed to release them into the supply chain. For contractors, specifiers and end users, ErP will help them make more informed choices when selecting ventilation products, such as air handling units. By offering greater clarity on the efficiencies of products, the new requirements will promote the consideration of higher-performing products, while delivering energy cost savings to end users. The legislation considers a ventilation unit to be non-residential if the maximum flow rate exceeds 250m3/h, or where the flow rate is between 250-1000m3/h and it is not declared as being used exclusively for residential purposes.

Under the directive, all ventilation units – except dual-use units – must be equipped with a multi-speed drive or a variable speed drive. Additionally, all bi-directional units must include an energy recovery system that incorporates a thermal bypass facility. Ventilation units exempt under new legislation Crucially, the thermal efficiency of the energy recovery system must achieve at least 67% – unless it incorporates a run-around coil, in which case it must achieve at least 63% efficiency. The requirements are set to get even more stringent with the next phase of the directive, planned for implementation in 2018. This second wave of legislation will further increase the efficiency requirements of eligible products. The good news is that – by working closely with manufacturers – specifiers and engineers can be sure they are designing systems that will comply with the new requirements from the outset, while also maximising performance. The EQ Prime air handling unit

So, what does this mean for designer engineers and consultants? If an existing project is using non-compliant heat recovery units – for example, a standard plate heat exchanger that typically offers 50-60% efficiency – designers can do one of two things. First, they can increase the energy recovery efficiency of a standard plate heat exchanger by reducing the fin spacing of the plates – that is, the gap between each plate. This smaller spacing will allow the use of more plates within the same area. Also, because the spacing has been reduced, there will be increased resistance, thereby adding turbulence, resulting in greater heat transfer. However, by increasing the resistance across the standard plate heat exchanger, the specific fan power of the air handling unit (AHU) will also increase, which may lead to non-compliance with Building Regulations Part L. To mitigate this issue, the AHU would either need to be oversized, or the velocity achieved through the ductwork would need to be reduced to lower the external static pressure.

Ventilation and fan products must be ErP compliant Reducing fin spacing would also lead to an increase in noise because the fan speed must increase to maintain the original duty. This could result in undesirable levels of breakout noise from the ceiling into the building areas, or in attenuators being undersized. Second, designers could opt for a more efficient unit. However, it may not be as simple as swapping to a more compliant unit, such as in instances where a counter-flow heat exchanger or thermal wheel are installed. Counter-flow heat exchangers are approximately 30-40% more efficient than standard plate heat exchangers, but have a larger footprint. Because of existing services or structural supports, this could mean the energy recovery unit – or the air handling unit – may need to be relocated. The vast majority of thermal wheels incorporate a double-deck design, so they would not fit within a ceiling void either. The thermal wheel would need to be placed either in the plantroom or externally, resulting in a loss of lettable space and potential problems when locating a system on a roof that, for example, has height restrictions.