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• Any boundary that air cannot pass through.

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
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  Cite Definition for Air barrier

  American Psychological Association (APA)

  Air barrier. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/air-barrier.

  Chicago Manual of Style (CMS)

  Air barrier. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/air-barrier (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "Air barrier." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/air-barrier.

• Browse Related Terms: Air barrier, Air handler, Conditioned Space, Return, supply, Thermal barrier, Unconditioned space

All > Technology > Mechanical Engineering > HVAC Heating Ventilation and Air Conditioning

• In a forced air heating system this is the "box" containing the fan that circulates the air.

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
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  Cite Definition for Air handler

  American Psychological Association (APA)

  Air handler. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/air-handler.

  Chicago Manual of Style (CMS)

  Air handler. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/air-handler (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "Air handler." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/air-handler.

• Browse Related Terms: Air barrier, Air handler, Conditioned Space, Return, supply, Thermal barrier, Unconditioned space

All > Technology > Mechanical Engineering > HVAC Heating Ventilation and Air Conditioning

• An area that is designed to be heated.

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
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  Cite Definition for Conditioned Space

  American Psychological Association (APA)

  Conditioned Space. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/conditioned-space.

  Chicago Manual of Style (CMS)

  Conditioned Space. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/conditioned-space (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "Conditioned Space." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/conditioned-space.

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All > Technology > Mechanical Engineering > HVAC Heating Ventilation and Air Conditioning

• This is the part of the thermal energy distribution system that carries fluid (water or air) from the conditioned space back to the air handler so that it can be heated or cooled and sent out to the conditioned space again.

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
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  Cite Definition for Return

  American Psychological Association (APA)

  Return. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/return.

  Chicago Manual of Style (CMS)

  Return. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/return (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "Return." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/return.

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All > Technology > Mechanical Engineering > HVAC Heating Ventilation and Air Conditioning

• This is the part of the thermal energy distribution system that carries fluid from the air handler to the conditioned space.

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
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  Cite Definition for supply

  American Psychological Association (APA)

  supply. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/supply.

  Chicago Manual of Style (CMS)

  supply. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/supply (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "supply." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/supply.

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All > Technology > Mechanical Engineering > HVAC Heating Ventilation and Air Conditioning

• A boundary to heat flow. i.e. insulation

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
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  Cite Definition for Thermal barrier

  American Psychological Association (APA)

  Thermal barrier. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/thermal-barrier.

  Chicago Manual of Style (CMS)

  Thermal barrier. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/thermal-barrier (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "Thermal barrier." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/thermal-barrier.

• Browse Related Terms: Air barrier, Air handler, Conditioned Space, Return, supply, Thermal barrier, Unconditioned space

All > Technology > Mechanical Engineering > HVAC Heating Ventilation and Air Conditioning

• Any space that is not meant to be heated.

  Lawrence Berkeley National Laboratory - Cite This Source - This Definition
  ×

  Cite Definition for Unconditioned space

  American Psychological Association (APA)

  Unconditioned space. (n.d.). Thermal Energy Distribution Glossary. Retrieved June 5, 2023, from website: http://www.expertglossary.com/definition/unconditioned-space.

  Chicago Manual of Style (CMS)

  Unconditioned space. ducts.lbl.gov. Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. http://www.expertglossary.com/definition/unconditioned-space (accessed: June 5, 2023).

  Modern Language Association (MLA)

  "Unconditioned space." Thermal Energy Distribution Glossary. Lawrence Berkeley National Laboratory. 5 June. 2023 http://www.expertglossary.com/definition/unconditioned-space.

• Browse Related Terms: Air barrier, Air handler, Conditioned Space, Return, supply, Thermal barrier, Unconditioned space