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2. Kang bed-stove - Wikipedia

   en.wikipedia.org/wiki/Kang_bed-stove

   A large kang shared by the guests of a one-room inn in a then-wild area east of Tonghua, Jilin, as seen by Henry E.M. James in 1887. The kang (Chinese: 炕; pinyin: kàng; Manchu: nahan, Kazakh: кән) is a traditional heated platform, 2 metres or more long, used for general living, working, entertaining and sleeping in the northern part of China, where the winter climate is cold.

3. Asian furniture - Wikipedia

   en.wikipedia.org/wiki/Asian_furniture

   The term Asian furniture, or sometimes Oriental furniture, refers to a type of furniture that originated in the continent of Asia. Sometimes people also think of Asian furniture as a style of furniture that has Asian accents. With assimilation with western culture the term can also expand to modern Asian furniture.

4. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   A condensing boiler Hot water central heating unit, using wood as fuel. A central heating system provides warmth to a number of spaces within a building from one main source of heat. A central heating system has a furnace that converts fuel or electricity to heat through processes.

5. Underfloor heating - Wikipedia

   en.wikipedia.org/wiki/Underfloor_heating

   Ondol continues to evolve in Asia. The most advanced true ondol system was established. The fire furnace was moved outside and the room was entirely floored with ondol in Korea. 1300: Hypocaust type systems used to heat monasteries in Poland and teutonic Malbork Castle. [9] 1400: Hypocaust type systems used to heat hammams of the Ottoman Empire ...

6. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/cold water and/or steam). Digital inputs are typically (dry) contacts from a control device, and analog inputs are typically a voltage ...

7. R-value (insulation) - Wikipedia

   en.wikipedia.org/wiki/R-value_(insulation)

   R-value is the temperature difference per unit of heat flux needed to sustain one unit of heat flux between the warmer surface and colder surface of a barrier under steady-state conditions. The measure is therefore equally relevant for lowering energy bills for heating in the winter, for cooling in the summer, and for general comfort.