Abstract: Various methods and apparatus are disclosed that relate to one or more aspects of a filter structure that may remove contaminants from a stream of fluid. In various aspects the filter structure includes a front portion having a first orientation and a rear portion having a second orientation unique from the first orientation.

Abstract: A control system for operating the HVAC systems within a building to control the environmental conditions within a building having an onsite component networked to a remote offsite component. The onsite component monitors the conditions within the building and operates the HVAC systems, while the offsite component can be used by the system provider to communicate updates to the onsite component and monitor the effectiveness of the control algorithms used to operate the HVAC systems. The invention includes the method of providing tailored HVAC related controls, reports, notices and diagnostic services to a client under various subscription plans.

Abstract: An odor filtration media having a chemical reagent which removes odor causing fluid contaminants from a fluid stream through the use of granular or shaped media have a chemical composition including permanganate is provided. A method of producing the odor absorbing media having a chemical reagent is also provided and comprises the steps of mixing H2O, KMnO4, and at least one salt adding ions or ionic compounds selected from the group consisting of Na+, Li+, K+, NH4+, Cl?, SO42?, BO32?, CO32?, PO43?, NO3? and combinations thereof, or from the group consisting of Na+, Li+, K+, NH4+, Mg2+, Ca2+, Cl?, BO32?, NO3? and combinations thereof, forming an impregnating solution. The impregnating solution is heated and combined with a support material to form a coherent mass.

Abstract: A deep bed scrubber filter section comprises includes an unfiltered air input end, a filtered air output end, an airflow filtration path extending from the unfiltered air input end to the filtered air output end, a plurality of media beds along the airflow filtration path in series arrangement with one another, the media beds each having a media bed volume and each being defined by a plurality of sidewalls, two of the sidewalls of each of the media beds being perforated sidewalls at least partially intersecting the airflow filtration path, wherein an adjustable sidewall of at least one of the perforated sidewalls of a first media bed of the media beds is independently removable from the airflow filtration path and is independently adjustable to a plurality of positions along the airflow filtration path, wherein adjustment of the at least one adjustable sidewall of the first media bed alters the media bed volume of the first media bed.

Abstract: A method of transferring filter media between a media bed of a dry scrubber and a filter media container, comprising placing the media bed in flow communication with the filter media container, obstructing a majority of an airflow path of the media bed, the airflow path extending from an unfiltered air input opening of the dry scrubber, through the media bed of the dry bed scrubber, to a filtered air output opening of said dry bed scrubber, powering a blower in the airflow path of the media bed when the airflow path is obstructed and the media bed is in flow communication with the filter media container, whereby the filter media is transferred between the media bed and the filter media container.

Abstract: A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section.

Abstract: In the description and drawings a method of forming a fiberglass mat is disclosed. A drum is rotated, a molten fiberglass material is fed through at least one orifice of a furnace while rotating the drum, and the relative position of the orifice with respect to a location on the drum is altered while rotating the drum and feeding the molten fiber glass material through the orifice to build up a fiberglass matt along a traverse length.

Abstract: A air gas detection pack is provided. The air gas detection pack has a card receiving pocket which slidably receives a gas detection card, the gas detection card having a plurality of chemically reactive materials retained therein and exposed to outside air through a plurality of aligned air permeable apertures formed in the front and rear wall of the substance detection pack. The combined gas detection card and gas detection pack indicates the concentrations of gases in the air. The air permeable apertures in conjunction with the reactive materials of the substance detection card are covered with a filtering media to protect the reactive material from dirt and dust contamination.

Abstract: A base/lifting structure, includes a base frame assembly and a plurality of readily removable lifting bracket channels, the base frame assembly and a plurality of readily removable lifting bracket channels each having structural elements, the structural elements being formed of galvanize sheet metal formed in a C-shape cross section, the structural elements being selectively utilized in the base frame assembly singly and in pairs. A method of forming a base/lifting structure is further included.

Abstract: An air filter having an improved structural support. A pleated air filter having a plurality of truncated pleat tips and sloping side surfaces along a front face and rear face. The truncated pleat tips are orientated perpendicular to the direction of pleating. A reinforcing support member oriented in the direction of pleating and substantially contouring and connecting to the face of the pleated air filter and thereby having truncated pleat tips orientated perpendicular to the direction of pleating. A reinforcing strip connected to the truncated pleat tips of the reinforcing member along the face of the air filter and another reinforcing strip located on the opposite face of the air filter and connected to the truncated pleat tips of the filter to form a truss structure.

Abstract: In the description and drawings methods and apparatus for the compression and winding of a plurality of overlapped fibrous blankets are disclosed. The methods and apparatus may allow a leading edge of a trailing blanket to be overlapped with a trailing edge of a leading blanket that is being wound by a compressing winder assembly. As the compressing winder assembly winds the leading blanket, the trailing blanket may be moved downstream by the leading blanket and an overlapped portion of the two blankets may move through a compression zone of a winder feed chute.

Abstract: A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. The assembly is highly efficient by virtue of a variable frequency drive (VFD) that drives a permanent magnet motor and matches compressor speed with compressor load, a direct drive impeller that eliminates gearing losses, and magnetic bearings that reduce frictional losses. The back-emf produced by the motor provides an intermediate power source for the magnetic bearings in the event of a loss of electrical power. A cooling system provides direct cooling of the rotor with gas refrigerant, and cooling of the stator with liquid refrigerant. Modular construction allows the compressor to be retrofit with upgrades. An inlet guide vane system operates without need for oil lubrication. The use of light metal castings and elimination of gearing reduces the weight to one-third or less of comparably powered conventional units.

Abstract: A filter media product and method of making the same wherein the filter media is pleatable and has at least one support scrim comprised of a melt bonded non-woven material or a fuse bonded non-woven material bonded to a layer of expanded polytetrafluoroethylene. The filter media may have a single support scrim with one or more layers and optionally may have a support scrim on both an upstream and downstream surface where both or neither support scrim is multilayered. The filter media may have an efficiency greater than, equal to, or less than HEPA.

Abstract: A front access frame sealing mechanism for filter cassettes comprising at least one pair of posts extending inwardly from opposing sidewalls of a filter cassette housing wherein the posts have a head with a diameter exceeding that of the shaft of the post. At least one camming retainer is mounted adjacent each opposing sidewall about a post wherein each of camming retainer has a cam with a centrally oriented aperture with a diameter greater than the diameter of the post head for mounting about the posts. The cams have a flat portion and a extending handle portion, the flat portion becomes adjacent a sealing channel when in a sealing position. A sealing channel is adjacent each sidewall of the housing with a linear side adjacent front edges of at least one upstream filter cassette and having a channel holding each of the cams.

Abstract: A front access frame sealing mechanism for filter cassettes comprising at least one pair of posts extending inwardly from opposing sidewalls of a filter cassette housing wherein the posts have a head with a diameter exceeding that of the shaft of the post. At least one camming retainer is mounted adjacent each opposing sidewall about a post wherein each of camming retainer has a cam with a centrally oriented aperture with a diameter greater than the diameter of the post head for mounting about the posts. The cams have a flat portion and a extending handle portion, the flat portion becomes adjacent a sealing channel when in a sealing position. A sealing channel is adjacent each sidewall of the housing with a linear side adjacent front edges of at least one upstream filter cassette and having a channel holding each of the cams.

Abstract: In the description and drawings a final fiberglass product is disclosed. The final fiberglass product may have a fiber curl layer, a fiber skin layer, and a fiber loft layer between the fiber curl layer and the fiber skin layer. The fiber curl layer may be on an unfiltered air entry side of the final fiberglass product and have a plurality of generally sinusoidal fiber bundles therein.