AIR CONDITIONER

• Main Authors: SHIBATA ETSUO, YAO KENJI, NAKAKOSHI TAKESHI, YOSHIDA AKIRA, KOTANI MASANORI
• Format: Patent
• Language: English
• Published: 09.02.1993
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; VENTILATING; WEAPONS

PURPOSE:To use part of the refrigerant circulating in a refrigeration cycle for adding radiation to convection in air conditioning. CONSTITUTION:In cooling, part of the liquefied refrigerant coming from an outdoor heat exchanger 2 branches off, flows through a second expansion valve 5, and, as it passes through a manifold 23 at the top end of a radiant panel 4, vaporizes by absorption of heat from inside the room through the radiant panel and liquefies the refrigerant which is migrating inside the radiant panel toward the manifold at the top end; the liquefied refrigerant naturally falls through heat pipes 19 and collects at a manifold 24 at the lower end and then, by heat collected through the radiant panel, turns into vapor again in repeated cycles. By the vaporization and liquefaction in repeated cycles the radiant panel is cooled and radiant cooling of the room is effected. In heating, the refrigerant discharged from a compressor 1 releases heat to the room at an indoor heat exchanger 3 and, as it passes through the manifold at the lower end of the radiant panel, heats and vaporizes the refrigerant inside the radiant panel; the vaporized refrigerant condenses when it rises up the heat pipes 19, heats the radiant panel to effect radiant heating, and, after condensation, the refrigerant naturally falls and returns to the manifold at the lower end.