Capillary tube incorporated into last pass of condenser

A multipass evaporator for an air conditioner, said multipass evaporator comprising:

• a pair of spaced-apart and parallel headers;
• a plurality of channels extending between and connected to said headers, each of said microchannels in fluid communication with each of said headers;
• a throttling microchannel extending between and connected to said headers, said throttling microchannel in fluid communication with each of said headers and having a desired restriction to obtain constant enthalpy expansion;
• and
• at least two baffles provided within said headers, at least one of said baffles located in each of said headers to divide said plurality of channels and said throttling microchannel into at least three passes, said at least three passes including a first pass, a last pass, and at least one intermediate pass between said first pass and said last pass, wherein said first pass includes said throttling microchannel.

A refrigeration system comprising:

• a compressor having an inlet and an outlet;
• a condenser having an inlet connected to said compressor outlet and an outlet;
• and
• at least one multipass evaporator having an inlet connected to said condenser outlet and an outlet connected to said compressor inlet, said multipass evaporator comprising:
• a pair of spaced-apart and parallel headers;
• a plurality of channels extending between and connected to said headers, each of said channels in fluid communication with each of said headers;
• a throttling microchannel extending between and connected to said headers, said throttling microchannel in fluid communication with each of said headers and having a desired restriction to obtain constant enthalpy expansion;
• and
• at least two baffles provided within said headers, at least one of said baffles located in each of said headers to divide said plurality of channels and said throttling microchannel into at least three passes, said at least three passes including a first pass, a last pass, and at least one intermediate pass between said first pass and said last pass, wherein said first pass includes said throttling microchannel.

A refrigeration system comprising:

• a compressor having an inlet and an outlet;
• a multipass condenser having an inlet connected to said compressor outlet and an outlet, said multipass condenser comprising:
• a pair of spaced-apart and parallel headers;
• a plurality of channels extending between and connected to said headers, each of said channels in fluid communication with each of said headers;
• a throttling microchannel extending between and connected to said headers, said throttling microchannel in fluid communication with each of said headers and having a desired restriction to obtain constant enthalpy expansion;
• and
• at least two baffles provided within said headers, at least one of said baffles located in each of said headers to divide said plurality of channels and said throttling microchannel into at least three passes, said at least three passes including a first pass, a last pass, and at least one intermediate pass between said first pass and said last pass, wherein said last pass includes said throttling microchannel;
• and
• an evaporator having an inlet connected to said condenser outlet and an outlet connected to said compressor inlet.