Abstract: A plate package for a heat exchanger device includes a plurality of heat exchanger plates of a first type and a plurality of heat exchanger plates of a second type. At least the heat exchanger plates of the first type include, along at least a section of the opposing side portions, a draining channel flange. The draining channel flanges are oriented in one and the same direction such that a draining channel flange of a first heat exchanger plate of the first type abuts or overlaps a draining channel flange of a subsequent heat exchanger plate. The draining channel flanges form outer walls to the outer draining portions thereby transforming the outer draining portions into draining channels. A method of using such plate package in a heat exchanger device and also a heat exchanger device as such are also disclosed.

Abstract: A plate package for a heat exchanger device includes a plurality of heat exchanger plates of a first type and a plurality of heat exchanger plates of a second type. At least the heat exchanger plates of the first type include, along at least a section of the opposing side portions, a draining channel flange. The draining channel flanges are oriented in one and the same direction such that a draining channel flange of a first heat exchanger plate of the first type abuts or overlaps a draining channel flange of a subsequent heat exchanger plate. The draining channel flanges form outer walls to the outer draining portions thereby transforming the outer draining portions into draining channels. A method of using such plate package in a heat exchanger device and also a heat exchanger device as such are also disclosed.

Abstract: A porthole gasket is configured to seal a circumferential region around two overlapping portholes in two adjacent heat exchanger plates of a plate heat exchanger, so as to define a passage for a fluid into or out of the plate heat exchanger. The porthole gasket has a ring-shaped portion to be compressed between the two adjacent heat exchanger plates while surrounding the overlapping portholes. The porthole gasket further comprises a plurality of projections that protrude from an outer perimeter of the ring-shaped portion and are configured to be compressed between the two adjacent heat exchanger plates so as to support the ring-shaped portion against pressure exerted by the fluid. A plate package for a plate heat exchanger is configured to include the two adjacent heat exchanger plates and the porthole gasket.

Abstract: A plate heat exchanger includes a plurality of heat exchanger plates formed of a metal sheet and permanently joined to each other by means of a braze material to form a plate package having first plate interspaces and second plate interspaces. Each heat exchanger plate has a pattern forming a heat transfer area and a plurality of porthole areas. Each heat exchanger plate extends along a main extension plane. The areas extend, on one side of the heat exchanger plate, between a primary level at a distance from the main extension plane and a secondary level at a distance from and on an opposite side of the main extension plane. Each heat exchanger plate has a depth defined by the distance between the primary level and the secondary level. The depth is equal to or less than 1.0 mm.

Abstract: A plate heat exchanger including a plurality of heat exchanger plates joined to each other. Each plate has a heat transfer area, a first porthole area, a second porthole area, a third porthole area and a fourth porthole area. Each porthole area surrounds a porthole having a porthole edge. Each porthole area comprises an annular flat area, a set of inner portions on the annular flat area along the porthole edge, and a set of outer portions along the annular flat area at a distance from the inner portions. The outer portions of the first porthole area have a first relative peripheral position with respect to the inner portions. The outer portions of the fourth porthole area have a second relative peripheral position with respect to the inner portions. The first relative peripheral position includes a peripheral displacement in relation to the second relative peripheral position.

Abstract: A plate heat exchanger includes a plurality of heat exchanger plates. The plates are provided beside each other and permanently joined to each other to form a plate package having first plate interspaces and second plate interspaces. Each plate has a heat transfer area and four porthole areas defined by a porthole edge. Each of the porthole areas includes an annular flat area located at one of a primary and secondary level, and a set of inner portions on the annular flat area at the other of the primary and secondary level. Each inner portion has an inner part adjoining the porthole edge and an outer segment adjoining the inner part and having an angular extension of at least 180°. The outer segment has a continuous contour and a radius R, which is allowed to vary within the range 0.8R?R?1.2R.

Abstract: Magnetoresistive (MR) bias is dynamically controlled in a tape drive using a processor device. Upon determining head amplitude is below a threshold value, the MR bias is adjusted for increasing the head amplitude and extending the useful life span of the tape drive.

Abstract: Magnetoresistive (MR) bias is dynamically controlled in a tape drive using a processor device. Upon determining head amplitude is below a threshold value, the MR bias is adjusted for increasing the head amplitude and extending the useful life span of the tape drive.

Abstract: A flow module or plate reactor includes one or more sectioned or un-sectioned heat exchanger plates. Each sectioned heat exchanger plates has a plurality of sections, each of which has a heat exchanger inlet and a heat exchanger outlet configured to flow one or more fluids therein in a first direction. The flow module or plate reactor includes one or more thermocouples and/or sensors and a regulating valve positioned either downstream of each of the heat exchanger outlets or upstream of one of the heat exchanger inlets. The flow module or plate reactor includes one or more serpentine configured process flow channels which have a channel inlet point and a channel outlet point which define a line oriented in a second direction which is at an angle of ninety degrees relative to the first direction. The flow module or plate reactor includes one or more flow plates and/or reactor plates.

Abstract: A method for selecting which tap coefficients of a programmable finite-impulse-response (FIR) equalizer to fix is disclosed. In one embodiment, such a method includes performing an initial calibration to determine an initial value for each tap coefficient of a FIR equalizer. These initial values may be used to produce a first waveform. The method then performs an operation on the first waveform to produce a second waveform comprising multiple lobes. The second waveform is then analyzed to determine one or more lobes of the second waveform that have the largest area. The method then fixes coefficients of one or more taps that are closest to the lobe or lobes having the largest area. A corresponding apparatus and computer program product are also disclosed.

Abstract: A method for selecting which tap coefficients of a programmable finite-impulse-response (FIR) equalizer to fix includes performing an initial calibration to determine an initial value for each tap coefficient of a FIR equalizer. Using these initial values, a “total” FIR equalizer is determined which sets the tap coefficients to their initial values. The method further determines multiple sets of tap coefficients that may potentially be fixed in the FIR equalizer. For each set of tap coefficients that may potentially be fixed, the method determines a “fixed” FIR equalizer that sets the tap coefficients in the set to their initial values and other tap coefficients to zero. The method then determines a phase-difference energy between the “total” FIR equalizer and the “fixed” FIR equalizer for each set of tap coefficients that may potentially be fixed. The set of tap coefficients associated with the lowest phase-difference energy are then fixed.

Abstract: A plate heat exchanger including a plurality of heat exchanger plates (1), a first end plate and a second end plate. The plates are permanently joined to each other by means of a braze material. Each heat exchanger plate has a heat transfer area and a plurality of porthole areas surrounding a respective porthole. The plate heat exchanger including a plurality of having a bottom surface turned towards the heat exchanger plates. At least one of the flat elements including an annular protrusion extending from the bottom surface and tightly abutting one of the porthole areas of the outermost heat exchanger plate.

Abstract: A heat exchanger plate includes one or more heat exchanger sections, each of which has an inlet and outlet. The heat exchanger sections flow one or more heat exchanger fluids therein in a first direction from the inlet to the outlet. The heat exchanger plate includes one or more process flow channels, each of which has a channel inlet point and a channel outlet point defining a line oriented in a second direction. The second direction is at an angle of ninety degrees relative to the first direction. The process flow channel is configured to flow a process fluid therein or thereon and has a serpentine configuration. The heat exchanger plate includes a temperature sensor. The heat exchanger plate includes a regulating valve positioned in each heat exchanger outlet and is configured to regulate flow of the heat exchanger fluid in response to a signal received from the temperature sensor.

Abstract: The present invention refers to a method of operating an assembly (1) of heat exchangers (2) for subcritical and transcritical conditions, by initially arranging at least two heat exchangers (2) in parallel for the subcritical condition.

Abstract: Provided are a method, system, and article of manufacture for providing removable storage management services using removable storage error information. Read/write error information is obtained for at least one removable storage by interfacing with the removable storage manager. The obtained read/write error information for the at least one removable storage is processed to determine read/write error rates for the at least one removable storage. A determination is made as to whether the determined read/write error rates for the at least one removable storage exceed at least one read/write error threshold. At least one message is sent to the removable storage manager to replace the at least one removable storage having read/write error rates that exceed the at least one read/write error threshold.

Abstract: A method of evaluating the performance of a magnetic recording system, comprising measuring a first set of finite impulse response filter tap values at time t1, measuring a second set of finite impulse response filter tap values are measured at time t2, where time t2 is subsequent to time t1, and calculating an actual loss parameter using the first set of tap values and the second set of tap values. The method then compares the actual loss parameter with a total effective loss threshold.

Abstract: Provided are a method, system, and article of manufacture for providing removable storage management services using removable storage error information. Read/write error information is obtained for at least one removable storage by interfacing with the removable storage manager. The obtained read/write error information for the at least one removable storage is processed to determine read/write error rates for the at least one removable storage. A determination is made as to whether the determined read/write error rates for the at least one removable storage exceed at least one read/write error threshold. At least one message is sent to the removable storage manager to replace the at least one removable storage having read/write error rates that exceed the at least one read/write error threshold.

Abstract: Provided are a method, system, and article of manufacture for providing removable storage management services using removable storage error information. Read/write error information is obtained for at least one removable storage by interfacing with the removable storage manager. The obtained read/write error information for the at least one removable storage is processed to determine read/write error rates for the at least one removable storage. A determination is made as to whether the determined read/write error rates for the at least one removable storage exceed at least one read/write error threshold. At least one message is sent to the removable storage manager to replace the at least one removable storage having read/write error rates that exceed the at least one read/write error threshold.

Abstract: A method of evaluating the performance of a magnetic recording system, comprising measuring a first set of finite impulse response filter tap values at time t1, measuring a second set of finite impulse response filter tap values are measured at time t2, where time t2 is subsequent to time t1, and calculating an actual loss parameter using the first set of tap values and the second set of tap values. The method then compares the actual loss parameter with a total effective loss threshold.

Abstract: A plate heat exchanger comprises a plurality of heat exchanger plates (1), a first end plate (2) and a second end plate (3). The plates (1-3) are permanently joined to each other by means of a braze material. Each heat exchanger plate has a heat transfer area and a plurality of porthole areas surrounding a respective porthole. The plate heat exchanger comprises a plurality of (50, 53) having a bottom surface (51) turned towards the heat exchanger plates. At least one of the flat elements comprises an annular protrusion (52) extending from the bottom surface (51) and tightly abutting one of the porthole areas of the outermost heat exchanger plate.