Abstract: An air-conditioner outdoor heat exchanger has a fin, multiple heat transfer pipes thermally connected to the fin, having a flat sectional shape, and configured such that refrigerant flows through header pipes connected to inlet and outlet sides of the heat transfer pipes. The refrigerant flows through the heat transfer pipes in parallel, and when the refrigerant returns from the outlet-side header pipe to the inlet-side header pipe through the heat transfer pipes, the refrigerant returns to the inlet-side header pipe through one of the heat transfer pipes adjacent to another one of the heat transfer pipes through which the refrigerant has flowed when flowing from the inlet-side header pipe to the outlet-side header pipe. At least two systems of refrigerant paths are formed, and the refrigerant flows back and forth in each system between the inlet-side header pipe and the outlet-side header pipe.

Abstract: A computer, which is configured to manage a resource for which a metric being an indicator for evaluating performance of the resource is to be measured, the computer being coupled to, via the interface, a management target system including a plurality of resources, and storing correlation information for managing a correlation coefficient indicating a degree of correlation between metrics, and the computer being configured to: detect a trigger event to identify a bottleneck based on a metric value of a monitored metric of a monitored resource; identify a related resource having a coupling relationship with the monitored resource; identify a correlation metric that is highly correlated with the monitored metric from among metrics of the related resource based on the correlation information; identify a combination of the related resource and the correlation metric as a bottleneck candidate.

Abstract: Provided is a heat exchanger which includes: multiple heat transfer pipes in which refrigerant flows; and a corrugated fin joined to the heat transfer pipes; and multiple plate-shaped fins. The plate-shaped fins are joined to at least one of each heat transfer pipe or the corrugated fin, and are arranged on a windward side in an air blowing direction with respect to the corrugated fin such that a plate width direction of each plate-shaped fin is substantially coincident with a plate width direction of the corrugated fin.

Abstract: An air-conditioner outdoor heat exchanger has a fin, multiple heat transfer pipes thermally connected to the fin, having a flat sectional shape, and configured such that refrigerant flows through header pipes connected to inlet and outlet sides of the heat transfer pipes. The refrigerant flows through the heat transfer pipes in parallel, and when the refrigerant returns from the outlet-side header pipe to the inlet-side header pipe through the heat transfer pipes, the refrigerant returns to the inlet-side header pipe through one of the heat transfer pipes adjacent to another one of the heat transfer pipes through which the refrigerant has flowed when flowing from the inlet-side header pipe to the outlet-side header pipe. At least two systems of refrigerant paths are formed, and the refrigerant flows back and forth in each system between the inlet-side header pipe and the outlet-side header pipe.

Abstract: Provided is a heat exchanger which includes: multiple heat transfer pipes in which refrigerant flows; and a corrugated fin joined to the heat transfer pipes; and multiple plate-shaped fins. The plate-shaped fins are joined to at least one of each heat transfer pipe or the corrugated fin, and are arranged on a windward side in an air blowing direction with respect to the corrugated fin such that a plate width direction of each plate-shaped fin is substantially coincident with a plate width direction of the corrugated fin.

Abstract: A computer, which is configured to manage a resource for which a metric being an indicator for evaluating performance of the resource is to be measured, the computer being coupled to, via the interface, a management target system including a plurality of resources, and storing correlation information for managing a correlation coefficient indicating a degree of correlation between metrics, and the computer being configured to: detect a trigger event to identify a bottleneck based on a metric value of a monitored metric of a monitored resource; identify a related resource having a coupling relationship with the monitored resource; identify a correlation metric that is highly correlated with the monitored metric from among metrics of the related resource based on the correlation information; identify a combination of the related resource and the correlation metric as a bottleneck candidate.