翻訳と辞書 Words near each other ・ Thermic welding ・ Thermichthys hollisi ・ Thermidarctia ・ Thermidarctia thermidoides ・ Thermidarctia thirmida ・ Thermidava ・ Thermidor ・ Thermidor (disambiguation) ・ Thermal energy storage ・ Thermal engineering ・ Thermal entrance length ・ Thermal equator ・ Thermal equilibrium ・ Thermal expansion ・ Thermal expansion coefficients of the elements (data page) ・ Thermal expansion valve ・ Thermal fade ・ Thermal fluctuations ・ Thermal fluids ・ Thermal fracturing in glass ・ Thermal grease ・ Thermal grill illusion ・ Thermal Hall effect ・ Thermal Head ・ Thermal history coating ・ Thermal history modelling ・ Thermal history of the Earth ・ Thermal hydraulics ・ Thermal hydrolysis ・ Thermal imaging camera (firefighting) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Thermal expansion valve ： ウィキペディア英語版 Thermal expansion valve A thermal expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in refrigeration and air conditioning systems that controls the amount of refrigerant flow into the evaporator thereby controlling the superheating at the outlet of the evaporator. Thermal expansion valves are often referred to generically as "metering devices". ==Description== Flow control, or metering, of the refrigerant is accomplished by use of a temperature sensing bulb, filled with a similar gas as in the system, that causes the valve to open against the spring pressure in the valve body as the temperature on the bulb increases. As the suction line temperature decreases, so does the pressure in the bulb and therefore on the spring causing the valve to close. An air conditioning system with a TX valve is often more efficient than other designs that do not use one.〔http://books.google.com/books?id=eS_2UGJVA2EC&lpg=PR8&ots=bfW0x_ObE&pg=PA445 Refrigeration & Air Conditioning Technology〕 A thermal expansion valve is a key element to a heat pump; the cycle that makes air conditioning, or air cooling, possible. A basic refrigeration cycle consists of four major elements, a compressor, a condenser, a metering device and an evaporator. As a refrigerant passes through a circuit containing these four elements, air conditioning occurs. The cycle starts when refrigerant enters the compressor in a low-pressure, moderate-temperature, gaseous form. The refrigerant is compressed by the compressor to a high-pressure and high-temperature gaseous state. The high-pressure and high-temperature gas then enters the condenser. The condenser converts the high-pressure and high-temperature gas to a high-pressure liquid by transferring heat to a lower temperature medium, usually ambient air. The high pressure liquid then enters the expansion valve where the TX valve allows a portion of the refrigerant to enter the evaporator. In order for the higher temperature fluid to cool, the flow must be limited into the evaporator to keep the pressure low and allow expansion back into the gas phase. The TXV has sensing bulbs connected to the suction line of the refrigerant piping. The sensing bulbs give temperature readings to the TXV to adjust flow of refrigerant.〔http://www.scribd.com/doc/15509399/04-Refrigeration-Cycle-A-Trane-Air-Conditioning-Clinic〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Thermal expansion valve」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.