HEATING & VENTILATION


the exhaust air transferring it into the cooler, fresh, incoming air. The process removes excess moisture from inside, filters the incoming air to remove pollutants, and the transfer of warmth helps temper the incoming cooler air to modulate the temperature indoors without loading a central heating system.


Latest innovations


The concept is not new, as we all know. What is new is system evolution, particularly in performance and the ability to integrate with other low/ no energy building services to help deliver on the Government’s decarbonisation targets to reduce emissions. Manufacturers have refined the original concept of mechanical ventilation with heat


Gilberts Blackpool developed hybrid ventilation for commercial buildings, with its original MFS unit. Its latest version with heat recovery is claimed to surpass the performance of anything comparable on the market. Gilberts is one of the leading independent air movement specialists, with 60 years heritage and its own purpose-built test laboratory at its 140,000 sq ft head office.


BIM Objects


A+++ ErP rating


Up to *


Monobloc air source heat pump.


recovery in response to the need to reduce our carbon footprint- a process accelerated by the spiralling energy bills every one of us- at home and at work- is facing. For us in the ventilation sector, the challenge was obvious: how to utilise natural ventilation as much as possible. It is, after all, free, relying on natural air movement and buoyancy. Thus, the advent of hybrid ventilation with heat recovery (HV-HR) i.e. systems that predominantly use natural ventilation, using a low energy heat exchanger to extract as much of the warmth from the used exhaust air and transfer it into the incoming cooler air. A further low energy fan boosts airflow only as/when needed.


Clever use of heat exchanger technology means that the latest options- our MFS-HR for example- can deliver up to 75% heat recovery!


Highly efficient - COP rating up to 4.85


Low global warming potential - R32 refrigerant


Inverter controlled compressor


Cascade systems to achieve higher output


14 - 70kW output


Airflow of up to 470l/s- in line with current Building Regulations Approved Document F- makes sure adequate air changes are achieved. Recovering any quantity of heat from exhaust air and using it to temper the incoming air also helps reduce overall energy consumption, in that less supplementary heating is required to retain a comfortable ambient temperature inside. Now too, there are HV-HR options that include a further heat coil within the ventilation unit to boost heat output up to 4Kw (2Kw cooling) - for around £10/zone/unit/annum(at current energy prices). The heat performance can remove the need for separate central heating and all its associated plant, ducting, radiators, pipework- all impacting costs, space requirements, carbon emissions and embodied carbon. It is also possible to couple these options alongside green heating technologies such as a boiler fitted with a flue economiser or heat source pump. Energy consumption and the carbon footprint are further improved. Any electricity required to run the ventilation can be created via wind turbines or solar arrays. Utilising combinations of these technologies, the ventilation could even achieve carbon negative status! There is an added associated benefit: these can also reduce the amount of electricity


required overall for the site, thereby cutting the need for space on which to install PV panels. With commercial energy bills reportedly quadrupling in the past year, non-domestic buildings accounting for 25% of UK emissions from buildings, and the Government’s objective of reducing emissions in the public sector by 75% by 2037, HV-HR must surely be the strategy for low energy, low carbon, healthy buildings?


Read the latest at: www.bsee.co.uk


Low carbon heating? There’s a Hamworthy for that.


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* 5 year warranty available if commissioned by Hamworthy. 2 year warranty as standard.


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