Abstract: The invention relates to a heat exchanger for an electrical machine. The heat exchanger comprises a housing and a tube bundle. The tube bundle comprises a plurality of tubes within the housing extending between a first end and a second end of the housing in the direction of the length of the heat exchanger. The housing comprises a top wall, end walls extending in the direction of the width of the heat exchanger and first and second side walls extending in the direction of the length of the heat exchanger and a bottom frame. Between a first side wall of the housing and a side of the tube bundle is a mounting space for receiving one or more cooling fluid circulating devices.

Abstract: The invention relates to a heat exchanger for an electrical machine. The heat exchanger comprises a housing and a tube bundle. The tube bundle comprises a plurality of tubes within the housing extending between a first end and a second end of the housing in the direction of the length of the heat exchanger. The housing comprises a top wall, end walls extending in the direction of the width of the heat exchanger and first and second side walls extending in the direction of the length of the heat exchanger and a bottom frame. Between a first side wall of the housing and a side of the tube bundle is a mounting space for receiving one or more cooling fluid circulating devices.

Abstract: The heat exchanger comprises a first housing (10) provided with air channels (210) extending in a first direction (X) from an upstream end wall (13) towards a downstream end wall (14), a top plenum (20) in an upper portion of the first housing (10) above the air channels (210), and partition walls (220, 230) extending in a second direction (Y) perpendicular to the first direction (X) and dividing a lower portion of the first housing (10) into an upstream end section (31), a middle section (32), and a downstream end section (33). The air channels (210) terminate at the partition wall (230) between the middle section (32) and the downstream end section (33). The downstream end section (33) comprises at least one cone (300) extending in the first direction (X) and having a first upstream end (301) at the partition wall (230) where the air channels (210) terminate, and a second contracted downstream end (302).

Abstract: The invention relates to methods for selection of packet transmission routes between two network sites in a case, in which the sites are connected to the rest of the network via a plurality of connections each. According to the invention, the source network site is arranged to select which connection is used at the source end and which connection is used at the destination end, and base the selections at least partly on the basis of a round trip time value and a packet success rate value. The selection criteria can advantageously be time dependent.

Abstract: In a network element cluster having a plurality of nodes, distribution decisions are determined on the basis of certain field(s) of data packets according to predetermined criteria, and data packets are distributed to nodes of the network element cluster according to the distribution decisions. Data packets are processed by said nodes of the network element cluster, and the processing involves selecting at least partly arbitrary value(s) for at least one of the field(s) of at least one data packet. Such value(s) are selected for at least one of said certain field(s) of a third data packet, such that distribution decisions determined according to the predetermined criteria result in the same node in the cluster processing inbound and outbound packets of the same session ID.

Abstract: The invention relates to methods for controlling of transmission of data in IP networks. According to the invention, the sequence numbers and sending times of transmitted IPSec packets are stored, acknowledgement is sent for every N:th received IPSec packet or after any IPSec packet if T seconds have elapsed after sending a previous acknowledgement packet, the acknowledgement comprising the sequence number of the particular IPSec packet after the reception of which the acknowledgement is sent and the counter values indicating the number of packets and bytes received, and at least the round trip time, packet success rate and throughput value are determined from the reception time of the acknowledgement and the stored sending time associated with the sequence number in the acknowledgement and the counter values indicating the number of packets and bytes received.

Abstract: The invention relates to methods for selection of packet transmission routes between two network sites in a case, in which the sites are connected to the rest of the network via a plurality of connections each. According to the invention, the source network site is arranged to select which connection is used at the source end and which connection is used at the destination end, and base the selections at least partly on the basis of a round trip time value and a packet success rate value. The selection criteria can advantageously be time dependent.

Abstract: The invention relates to methods for selection of packet transmission routes between two network sites in a case, in which the sites are connected to the rest of the network via a plurality of connections each. According to the invention, the source network site is arranged to select which connection is used at the source end and which connection is used at the destination end, and base the selections at least partly on the basis of a round trip time value and a packet success rate value. The selection criteria can advantageously be time dependent.

Abstract: In a network element cluster having a plurality of nodes distribution decisions are determined (255) on the basis of certain field(s) of data packets according to predetermined criteria, and data packets are distributed (251) to nodes of the network element cluster according to the distribution decisions. Data packets are processed (252) said nodes of the network element cluster, and the processing involves selecting (253) at least partly arbitrary value(s) for at least one of the field(s) of at least one data packet. Such value(s) are selected (256) for at least one of said certain field(s) of a third data packet, that distribution decisions determined according to the predetermined criteria for a plurality of first data packets and a plurality of second data packets are the same, said pluralities of first and second data packets belonging to a first set of data packets and said third data packet being related to said first set of data packets.

Abstract: The invention relates to methods for controlling of transmission of data in IP networks. According to the invention, the sequence numbers and sending times of transmitted IPSec packets are stored, acknowledgement is sent for every N:th received IPSec packet or after any IPSec packet if T seconds have elapsed after sending a previous acknowledgement packet, the acknowledgement comprising the sequence number of the particular IPSec packet after the reception of which the acknowledgement is sent and the counter values indicating the number of packets and bytes received, and at least the round trip time, packet success rate and throughput value are determined from the reception time of the acknowledgement and the stored sending time associated with the sequence number in the acknowledgement and the counter values indicating the number of packets and bytes received.

Abstract: The invention relates to methods for selection of packet transmission routes between two network sites in a case, in which the sites are connected to the rest of the network via a plurality of connections each. According to the invention, the source network site is arranged to select which connection is used at the source end and which connection is used at the destination end, and base the selections at least partly on the basis of a round trip time value and a packet success rate value. The selection criteria can advantageously be time dependent.

Abstract: Method and apparatus for the finishing of a fiber web (W) by means of an on-machine calender connected to a paper machine or the like. The calendering apparatus includes a first hard roll (1) and a second hard roll (2) which is at a distance from the first one, and at substantially the same horizontal level, and in addition at least two elastic rolls (3,4,5) mounted on bearings borne by movable support (9,10,11,12). The elastic rolls (3,5) define in a working position calendering nips with the hard rolls (1,2). A number of paper guiding rolls (6,7,8,9,10,11) lead the course (W.sub.in .fwdarw.W.sub.out) of the web (W) through the calendering nips. The elastic rolls (3,4,5) have been arranged with respect to the hard rolls (1,2) so that the calendering nips (N.sub.1, N.sub.10, N.sub.11,N.sub.2, N.sub.20, N.sub.21) can be defined against the upper quadrant of the hard rolls (1,2) at substantially the same horizontal level with each other.

Abstract: Method in a paper manufacturing process for improving the properties of the paper, in particular its retention. In the method, the fibre material is passed through a refining and screening system to the head-box arrangement of a paper machine, which comprises one or several head boxes, through which the stock suspension is fed onto a forming wire or into a forming gap (G) between a pair of forming wires (40,41). Two different components are formed out of basic stock which contains substantially all the fibres to be used for the paper to be manufactured. Of these components, one component contains mainly fibres longer than the average distribution of fibre length in the basic stock, while the other stock component contains mainly fibres shorter than average and fines as well, in addition to a possible additive component or components for the stock, if any. The stock component of longer fibres is fed, by means of a multi-channel head box, into direct contact with the forming wire or wires (40,41).

Abstract: A paper machine having upper and lower wires and wherein an adjusting structure cooperates with a portion of at least one of these wires to move this wire portion close enough to a cooperating portion of the other wire to achieve a twin-wire operation and to move the adjustable wire portion away from the cooperating wire portion to achieve at the latter a single-wire operation, so that at least in part the wires are adjustable one with respect to the other to provide for the option of operating the machine, at least in part, as a single-wire machine or as a twin-wire machine.