Abstract: A two-sided articulating comprises a paper having a front and back sides, an adhesive pad, and a hinge. The adhesive, on one side of the pad, is configured for repeatedly and removably securing the pad to a flat portion of another object. The hinge, disposed between and connecting the paper and the adhesive pad, is configured to fold the paper 180° relative to the adhesive pad to change between the two configurations. In the first configuration, the front side of the paper is suitable to present a first message while the entire paper is coplanar with the adhesive pad. In the second configuration, the back side of the message means is suitable to present a second message while a majority of the back side of the paper is coplanar with the adhesive pad while no external force is applied to the writing portion of the two-sided articulated note.

Abstract: A two-sided articulating comprises a paper having a front and back sides, an adhesive pad, and a hinge. The adhesive, on one side of the pad, is configured for repeatedly and removably securing the pad to a flat portion of another object. The hinge, disposed between and connecting the paper and the adhesive pad, is configured to fold the paper 180° relative to the adhesive pad to change between the two configurations. In the first configuration, the front side of the paper is suitable to present a first message while the entire paper is coplanar with the adhesive pad. In the second configuration, the back side of the message means is suitable to present a second message while a majority of the back side of the paper is coplanar with the adhesive pad while no external force is applied to the writing portion of the two-sided articulated note.

Abstract: Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use of a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.

Abstract: A two-sided articulating note comprises a generally flat writing portion having opposing front and back sides and a hinged edge, an anchor portion, and a joint portion between the anchor portion and the hinged edge. A method of using the note configures the note in a first configuration by securing the anchor portion to an object so that the front side of the writing portion is exposed and the back side of the writing portion faces the object while the note lies flat, writes on the front side of the writing portion while the note is in the first configuration, configures the note in a second configuration by folding over the note about the joint portion to cause the back side of the writing portion to be exposed, and writing on the back side of the writing portion while the note is in the second configuration.

Abstract: A business card comprises front and back sides and a flap permanently attached to the business card. The flap comprises front and back sides and an adhesive on at least a portion of the flap's back side. The adhesive is capable of removably and reusably adhering to objects. The flap is foldable with respect to the business card such that the flap can be placed in at least two configurations. In a first configuration, the adhesive adheres to a portion of the back side of the business card, so that the business card is non-adhesive and can be used like a convention business card. In a second configuration, the flap aligns at least approximately with the business card, thereby presenting the flap's adhesive to be able to adhere to another object such that the front side of the business card faces outward from said another object.

Abstract: Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned; (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.

Abstract: Embodiments of a water head for an evaporator in a HVAC system are provided. The water head may have a fluid entrance and a fluid exit in a side-by-side arrangement on one end of the water head, and a distribution chamber and a collection chamber in a top-down arrangement on opposite side of the water head. The distribution chamber and the collection chamber are configured to be in fluid communication with inlets and outlets of a heat exchanging tube bundle respectively. The distribution chamber and the collection chamber can be configured to have continuously smooth surface contours to help reduce pressure drop and fluid separation, and promote advantageous distribution of the process fluid among heat exchanging tubes when a process fluid flows between the fluid entrance or the fluid exit, and the distribution chamber or the collection chamber respectively.

Abstract: A two-sided articulating note comprises a generally flat writing portion having opposing front and back sides and a hinged edge, an anchor portion, and a joint portion between the anchor portion and the hinged edge. A method of using the note configures the note in a first configuration by securing the anchor portion to an object so that the front side of the writing portion is exposed and the back side of the writing portion faces the object while the note lies flat, writes on the front side of the writing portion while the note is in the first configuration, configures the note in a second configuration by folding over the note about the joint portion to cause the back side of the writing portion to be exposed, and writing on the back side of the writing portion while the note is in the second configuration.

Abstract: Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.

Abstract: A two-sided articulating note comprises a generally flat writing portion having opposing front and back sides and a hinged edge, an anchor portion, and a joint portion between the anchor portion and the hinged edge. A method of using the note configures the note in a first configuration by securing the anchor portion to an object so that the front side of the writing portion is exposed and the back side of the writing portion faces the object while the note lies flat, writes on the front side of the writing portion while the note is in the first configuration, configures the note in a second configuration by folding over the note about the joint portion to cause the back side of the writing portion to be exposed, and writing on the back side of the writing portion while the note is in the second configuration.

Abstract: A two-sided articulating note comprises a generally flat writing portion having opposing front and back sides and a hinged edge, an anchor portion, and a joint portion between the anchor portion and the hinged edge. A method of using the note configures the note in a first configuration by securing the anchor portion to an object so that the front side of the writing portion is exposed and the back side of the writing portion faces the object while the note lies flat, writes on the front side of the writing portion while the note is in the first configuration, configures the note in a second configuration by folding over the note about the joint portion to cause the back side of the writing portion to be exposed, and writing on the back side of the writing portion while the note is in the second configuration.

Abstract: A two-sided hinged note comprises a generally planar sheet, an adhesive, and a hinge. The sheet has opposing front and back sides, both of which are suitable to be written upon at least in part. The adhesive, which may be pressure-sensitive and re-adherable, is on an adhesive area of the back side of the note and is capable of adhering to a surface of an item such that the sheet is flat against the surface thereby presenting the front side of the sheet facing outward from the surface. The hinge is proximate the adhesive area, wherein the hinge is operable to pivot approximately 180° to thereby present the back side of the sheet facing outward from the surface as a the sheet is approximately flat against the surface of the item.

Abstract: Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.

Abstract: Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.

Abstract: Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned; (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.

Abstract: Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.

Abstract: Embodiments of a water head for an evaporator in a HVAC system are provided The water head may have a fluid entrance and a fluid exit in a side-by-side arrangement on one end of the water head, and a distribution chamber and a collection chamber in a top-down arrangement on opposite side of the water head. The distribution chamber and the collection chamber are configured to be in fluid communication with inlets and outlets of a heat exchanging tube bundle respectively. The distribution chamber and the collection chamber can be configured to have continuously smooth surface contours to help reduce pressure drop and fluid separation, and promote advantageous distribution of the process fluid among heat exchanging tubes when a process fluid flows between the fluid entrance or the fluid exit, and the distribution chamber or the collection chamber.

Abstract: A two-sided hinged note comprises a generally planar sheet, an adhesive, and a hinge. The sheet has opposing front and back sides, both of which are suitable to be written upon at least in part. The adhesive, which may be pressure-sensitive and re-adherable, is on an adhesive area of the back side of the note and is capable of adhering to a surface of an item such that the sheet is flat against the surface thereby presenting the front side of the sheet facing outward from the surface. The hinge is proximate the adhesive area, wherein the hinge is operable to pivot approximately 180° to thereby present the back side of the sheet facing outward from the surface as a the sheet is approximately flat against the surface of the item.

Abstract: A business card comprises front and back sides and a flap permanently attached to the business card. The flap comprises front and back sides and an adhesive on at least a portion of the flap's back side. The adhesive is capable of removably and reusably adhering to objects. The flap is foldable with respect to the business card such that the flap can be placed in at least two configurations. In a first configuration, the adhesive adheres to a portion of the back side of the business card, so that the business card is non-adhesive and can be used like a convention business card. In a second configuration, the flap aligns at least approximately with the business card, thereby presenting the flap's adhesive to be able to adhere to another object such that the front side of the business card faces outward from said another object.

Abstract: A refrigerant evaporator includes a shell having a refrigerant inlet and a refrigerant outlet, and a plurality of tubes disposed within the shell and carrying a process fluid. One embodiment includes at least a first plurality of the tubes are immersed in liquid refrigerant within the shell, and at least a second plurality of the tubes are partially immersed in liquid refrigerant and partially surrounded by gaseous refrigerant. The refrigerant evaporator also includes a baffle positioned adjacent the first plurality of tubes and immersed in the liquid refrigerant to displace the liquid refrigerant.