A computerised method for estimating air flow within a ventilated room comprising a plurality of air supply units configured to supply air to a plurality of vents arranged across a floor of the room over an air supply plenum, the method comprising the steps of: i) identifying a vent having a minimum distance to any one of the air supply units; ii) for each of a selected number of the air supply units, calculating a contribution of air flow supplied to the identified vent from a sum of ratios of distances between the identified vent and each of the air supply units; and iii) repeating step ii) for a vent having a next minimum distance to any one of the air supply units until a contribution of air flow for each of the plurality of vents is calculated.
The invention relates to measuring air flow in ventilated environments such as computer data centres, and to apparatus for carrying out such air flow measurements. Embodiments disclosed include a portable measurement apparatus (10) comprising a plurality of air measurement units (11a-e), each unit comprising a tapering duct (12) extending between an inlet (13) and an outlet (14) of the unit, an anemometer (15) disposed at the outlet (14) and a temperature sensor (16) arranged to measure temperature of air passing through the duct and a data processing unit (17) connected to, and configured to receive and store readings from, each of the anemometers and temperature sensors, wherein the air measurement units are arranged to form, in use, a vertical array for measuring air flow (18) through each of the units.
G01F 1/68 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
G01P 5/00 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft
A removable vent (1) for an air ventilation system, the vent comprising: a frame (2) configured to allow the vent to be removably mounted within an opening; a grille (3) configured to allow the passage of air through the vent from a first face to a second opposing face; and a passive air flow diverter (4, 5) extending beyond the first face (7) of the vent and configured to redirect air flowing laterally across the first face to flow through the vent.
F24F 13/08 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates
G01F 1/38 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
F24F 13/068 - Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
An air filter unit (20) configured for attachment to an external wall of an enclosure, the air filter unit comprising an inlet (21 ) at a base of the unit; a filter (23) formed by a passageway extending from the inlet and lined with bristles extending across the passageway along at least a portion of the passageway length; an outlet (28); and a heat exchanger (24) disposed between the filter and the outlet such that air passing through the inlet and filter passes through the heat exchanger prior to exiting the unit through the outlet, wherein the air filter unit is configured for attachment such that the heat exchanger is disposed above the filter in use.
An equipment cabinet (100) having an air cooling system comprising: an air inlet (101) extending across an outer wall (102) of the cabinet; an air inlet filter (103) disposed between opposing first and second side panels (104, 105) forming the outer wall of the cabinet; and a fan (106) arranged to draw air through the filter and into an internal volume (107) of the cabinet for cooling equipment (108) contained therein.
A temperature-controllable equipment enclosure (110) comprising: an air inlet (113) having an inlet fan (228) arranged to supply air into the enclosure from an external environment through the air inlet to provide a positive air pressure within the enclosure when enabled; an air outlet (150); a conduit (125) extending between the outlet and an equipment cabinet (121 ) within the internal volume (115) of the enclosure; and an exhaust fan (127) arranged to drive air through the cabinet and conduit towards the outlet, wherein the conduit comprises an air bypass (240) connecting the internal volume of the enclosure with the interior of the conduit, such that air driven by the exhaust fan through the conduit is recirculated within the internal volume of the enclosure when the inlet fan is disabled and is exhausted from the enclosure through the air outlet when the air inlet fan is enabled.
An air filter (111) comprising a duct (118, 120) forming a passageway extending between an inlet (116) and an outlet (113) of the air filter, the duct comprising bristles (310) extending from a wall of the duct across at least a portion of the passageway so as to remov entrained particles from air passing through the duct.
A temperature-controllable equipment cabinet comprising a diffusion-absorption refrigeration cycle system (5), an evaporator pipe (4) of the refrigeration system extending through a wall (9) of the cabinet and passing through a sealed enclosure (3) for containing a heat transfer liquid (12), the sealed enclosure extending across and forming part of an internal surface (15) of the cabinet such that the refrigeration system in use extracts heat from within the cabinet to an external environment (7).
A diffusion-absorption refrigerator system (1) comprising a condenser pipe (6) passing through and surrounded by a heatsink (2), the heatsink comprising a sealed enclosure defining an internal cavity surrounding the condenser pipe for containing a heat transfer liquid, a cross-section of the heatsink transverse the condenser pipe tapering to a minimum thickness towards an upper end when oriented for use of the refrigerator system.
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid
A thermoelectric refrigerator apparatus (20) comprising a thermoelectric device (1) having an upper face (1a) and a lower face (1b), a sealed cavity (22) for containment of a heat transfer liquid (8) in direct thermal contact with the upper face (1a) of the thermoelectric device (1)5 the cavity (22) being configured to allow convective flow (21) of the heat transfer liquid (8) from the upper face (1a) of the thermoelectric device (1) to an upper surface (12) of the cavity comprising a heat dissipation area (12) so as to transport heat from the lower face (1b) to an external environment via the heat dissipation area (12), wherein the thermoelectric device (1) is at least partially encapsulated by an encapsulating medium (2) providing a fluid seal around a perimeter edge (7) of the thermoelectric device (1) between the upper and lower faces (1a, 1b).
F25B 21/02 - Machines, plants or systems, using electric or magnetic effects using Peltier effectMachines, plants or systems, using electric or magnetic effects using Nernst-Ettinghausen effect
patents