Heat exchanger and refrigeration cycle apparatus

A heat exchanger comprising:

• a distributor;
• and
• a plurality of heat transfer tubes connected in parallel with each other with respect to the distributor,
• the plurality of heat transfer tubes including a first heat transfer tube, and a second heat transfer tube disposed below the first heat transfer tube,
• each of the first heat transfer tube and the second heat transfer tube being configured as a flat tube, and
• an internal pressure loss of the first heat transfer tube being smaller than an internal pressure loss of the second heat transfer tube,
• the heat exchanger further comprising a third heat transfer tube connected in series with the first heat transfer tube and the second heat transfer tube via the distributor, wherein
• the internal pressure loss of the first heat transfer tube is smaller than the internal pressure loss of the second heat transfer tube, and is greater than an internal pressure loss of the third heat transfer tube.

A heat exchanger comprising:

• a distributor;
• a first heat transfer tube and a second heat transfer tube connected in parallel with each other with respect to the distributor;
• and
• a third heat transfer tube connected in series with the first heat transfer tube and the second heat transfer tube via the distributor,
• the first heat transfer tube being disposed above the second heat transfer tube, and
• an internal pressure loss of the first heat transfer tube being smaller than an internal pressure loss of the second heat transfer tube, and being greater than an internal pressure loss of the third heat transfer tube.

A heat exchanger comprising:

• a distributor;
• and
• a first heat transfer tube and a second heat transfer tube connected in parallel with each other with respect to the distributor;
• the first heat transfer tube being disposed above the second heat transfer tube,
• a first refrigerant flow path formed by the first heat transfer tube having a flow path length equal to that of a second refrigerant flow path formed by the second heat transfer tube, and
• an internal pressure loss of the first heat transfer tube being smaller than an internal pressure loss of the second heat transfer tube.