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  2. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    In the lower middle is the capacitor. Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.

  3. Aquifer thermal energy storage - Wikipedia

    en.wikipedia.org/wiki/Aquifer_thermal_energy_storage

    An ATES system uses the aquifer to buffer seasonal reversals in heating and cooling demand. ATES can serve as a cost-effective technology to replace fossil fuel-dependent systems and associated CO 2 emissions. ATES can contribute significantly to emission reductions, as buildings consume some 40% of global energy, mainly for heating and cooling ...

  4. Dalkia - Wikipedia

    en.wikipedia.org/wiki/Dalkia

    Website. dalkia.com. Dalkia is an energy service company, subsidiary of the EDF Group. Its two main businesses consist in making the most of local renewables and unlocking energy savings. [2] Dalkia develops alternative renewables, such as biomass, geothermal, biogas and recovered energies.

  5. Variable refrigerant flow - Wikipedia

    en.wikipedia.org/wiki/Variable_refrigerant_flow

    Variable refrigerant flow. Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller -based ...

  6. Vapor-compression refrigeration - Wikipedia

    en.wikipedia.org/wiki/Vapor-compression...

    Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles. It is also used in domestic and commercial refrigerators, large-scale warehouses ...

  7. Ionocaloric refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ionocaloric_refrigeration

    The ionocaloric refrigeration cycle is an advanced cooling technology that utilizes the ionocaloric effect, driven by an electrochemical field, to achieve efficient and eco-friendly refrigeration. By manipulating the electrochemical potential through ion addition or removal, significant temperature changes and entropy variations are achieved.

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