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  2. Air cycle machine - Wikipedia

    en.wikipedia.org/wiki/Air_cycle_machine

    The compressed, cooled air then travels through the expansion turbine which extracts heat from the air as it expands, cooling it to below ambient temperature (down to −20 °C or −30 °C). It is possible for the ACM to produce air cooled to less than 0 °C even when outside air temperature is high (as might be experienced with the aircraft ...

  3. Automotive air conditioning - Wikipedia

    en.wikipedia.org/wiki/Automotive_air_conditioning

    The Alliance for CO 2 Solutions claims, however that the initial costs of CO 2 systems will be around €5 higher than drop-in solutions and that over a car's life cycle, CO 2 air conditioning systems will be more cost-efficient than any currently used or proposed new chemical blends.

  4. M1120 HEMTT Load Handling System - Wikipedia

    en.wikipedia.org/wiki/M1120_HEMTT_Load_Handling...

    All M1120 variants are air transportable in the C-130 and C-17 transport aircraft. [ 1 ] The M1120 HEMTT LHS is fitted with Multilift Mark 5 (now designated MPH165-PLS) load handling system, this an imperial variant of the Mark 4/MPH165 that is further-modified to include a folding hook arm to bring the system within C-130 Hercules air ...

  5. Feed conversion ratio - Wikipedia

    en.wikipedia.org/wiki/Feed_conversion_ratio

    At around the same time the FCR based on weight gain for broilers in Brazil was 1.8. [25] The global average in 2013 is around 2.0 for weight gain (live weight) and 2.8 for slaughtered meat (carcass weight). [26] For hens used in egg production in the US, as of 2011 the FCR was about 2, with each hen laying about 330 eggs per year. [25]

  6. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    [2] [3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [4] Heat pumps are similar in many ways to air conditioners, but use a reversing valve to allow them both to heat and to cool an enclosed space.

  7. Ton of refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ton_of_refrigeration

    It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [1] [2] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW). Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in "tons" (of ...