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2. Air source heat pump - Wikipedia

   en.wikipedia.org/wiki/Air_source_heat_pump

   The main components of a split-system (called split as there are both inside and outside coils) air source heat pump are: An outdoor evaporator heat exchanger coil, which extracts heat from ambient air; One or more [9] indoor condenser heat exchanger coils. They transfer the heat into the indoor air, or an indoor heating system such as water ...

3. Seasonal energy efficiency ratio - Wikipedia

   en.wikipedia.org/wiki/Seasonal_energy_efficiency...

   An air-conditioning unit rated at 72,000 BTU/h (21 kW) (6 tons), with a SEER rating of 10, operates 1000 hours per year at an electric energy cost of $0.12 per kilowatt-hour (kW·h). What is the annual cost of the electric energy it uses? (72,000 BTU/h) × (1000 h/year) × ($0.12/kW·h) ÷ (10 BTU/W·h) ÷ (1000 W/kW) = $860/year. Example 2. A ...

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Multi-zone or multi-split systems are a common application of ductless systems and allow up to eight rooms (zones or locations) to be conditioned independently from each other, each with its indoor unit and simultaneously from a single outdoor unit. The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted ...

5. Inverter compressor - Wikipedia

   en.wikipedia.org/wiki/Inverter_compressor

   A typical modular chiller installation uses multiple fixed-speed. These units share the same water system to supply the building with cooled or heated water. Hybrid tandem, associating one inverter and one fixed-speed compressor, can better match the capacity requirement compared to a modular chiller with fixed-speed tandem compressors and ...

6. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   However lifetime cost relative to a gas boiler varies considerably depending on several factors, such as the quality of the heat pump installation and the tariff used. [106] In 2024 England was criticised for still allowing new homes to be built with gas boilers, unlike some other counties where this is banned.

7. Solar air conditioning - Wikipedia

   en.wikipedia.org/wiki/Solar_air_conditioning

   Such units run using DC power, and, as such, they can and do make use of the inherent DC power generated by photovoltaic solar panels. One mini split version of this units employs a 48v DC power bus and a 48v battery array, usually 4 x 12v batteries in series (e.g., Hotspot Energy). Unlike the whole-house battery system, though, these batteries ...