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An air mattress, also known as an airbed or a blow-up bed, [2] is an inflatable mattress made of polyvinyl chloride (PVC) or textile-reinforced urethane plastic or rubber. The deflated mattress can be compacted and carried or stored in a small form. They are inflated by blowing into a valve, either with a manual or an electric pump. Some are ...
A compost heater (or Biomeiler) is a structure for the energetic use of biomass for the heating of buildings. [1] [2] [3] A method relying on biological wood oxidation was developed by Jean Pain in the 1970s. Compost heaters are used primarily for demonstration purposes as small systems for heating a house. Local organic waste can be converted ...
Electrical heaters are often used as backup or supplemental heat for heat pump systems. The heat pump gained popularity in the 1950s in Japan and the United States. [14] Heat pumps can extract heat from various sources, such as environmental air, exhaust air from a building, or from the ground. Heat pumps transfer heat from outside the ...
The heat riser of a cob style rocket mass heater is made of cob, which is a clay and sand mixture reinforced with straw. [10] Because of the relatively low thermal conductivity , a mass consisting of cob can absorb heat and retain it for a longer period.
The company shifted to a licensing model. As of 2019, it has over 30 licensees and is operating in more than 90 countries. [5]King Koil ventured into the United Arab Emirates in 1993, collaborating with its licensee, Dubai Furniture Manufacturing Company (DFMC), which became the first licensee in the Middle East, and now it operates 15 King Koil showrooms in the UAE.
A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.