AIRCON, AIR MOVEMENT & VENTILATION 2 ECOBUILD REVIEW
scheme’s SAP assessor will apply a reduced ‘in-use’ factor to the SAP assessment for the installation, reducing the system’s specifi c fan power penalty from 40% to 30%, to help it meet compliance criteria.
Air movement Mechanical ventilation with heat recovery is not appropriate for all applications; some schemes simply require extract ventilation. EnviroVent used Ecobuild to showcase
new range of centralised and decentralised mechanical extract ventilation (MEV) solutions suitable for houses, apartments and communal residences. This includes the Ozeo compact, whole house MEV unit which can be fi tted with intelligent humidity sensing valves and PIR sensors to enable full demand ventilation. The company has also developed the Ozeo Ecowatt CP, an intelligent constant pressure MEV unit developed to enable the airfl ow inside the property to self-adjust in order to remain at a constant level without a drop in pressure, regardless of any ‘boost’ activity in other areas such as bathrooms and kitchens. Decentralised extract ventilation systems
in the home often require the use of a continuously running extract fan in rooms such as bathrooms, kitchens, utility rooms and toilets. Johnson & Starley’s A1003 and E1004 energy effi cient fans have been developed specifi cally for this application. The three-speed fans are designed to run continuously and almost silently at one of two lower-speed settings; users can then boost the fan speed to maximum performance when required. For commercial applications,
Fläkt Woods showcased their new series of ‘plug and play’ e3co Crown energy recovery units. The units have an airfl ow up to 1.3 m3/sec and are fi tted with a high effi ciency Eurovent certifi ed counter-fl ow aluminium plate heat exchanger to capture the energy from the exhaust air stream which is used to treat the incoming ventilation air. E3co Crown models include a built-in proportional motorised bypass to enable them to be used for night cooling during the summer months and a free-heating or free- cooling self-regulating function for daytime use. The units also have full BMS functionality offering signifi cant energy saving and improved control and management
50 CIBSE Journal May 2012
Titon’s HRV Q products were
featured at Ecobuild
of the building operations. Elta Fans used Ecobuild to announce the
fi rst in a series of new product launches, which feature its products powered by motors and impellers from Ziehl-Abegg. This launch includes the fi rst-ever fan in the HVAC market sector to feature the Ziehl FE2owlet impeller, which Elta says combines ‘scientifi c insights into the owl’s fl ight characteristics’ with the Ziehl’s extensive aero-acoustics knowledge to produce a completely new fan blade geometry with serrations on the trailing edge of the blade, like the owl’s wing, to reduce noise. The blades also borrow from the aircraft industry and feature ‘winglets’ on each blade to smooth airfl ow near the blade tip. EnviroVent’s RetroVent is a single room
An older model of TotalHome’s MVHR units
extract system incorporating a heat recovery unit with a twist, literally, since unit has been designed to make the extract air corkscrew around the heat exchange cell to increase the amount of time it is in contact with the heat exchanger, increasing the heat recovered. The unit works by continuously extracting stale and moist air from a room. The air passes over the heat exchange cell which is supplying fresh, fi ltered air to the room. The manufacturer claims that the solution enables up to 89% of the heat to be recovered; an automatic summer bypass prevents the unit preheating supply air in the summer. The unit is suitable for different wall thicknesses and is available in two sizes: 100 mm diameter version for bathrooms and WCs and a 150 mm version for kitchens,
www.cibsejournal.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72