欧日韩无套内射变态-亚洲av无码国产精品色午夜字幕-亚洲2022国产成人精品无码区-性欧美老人牲交xxxxx视频

WNS系列全自動燃油、燃?xì)忮仩t為臥式內(nèi)燃濕背式三回程火管鍋爐，燃燒室由波形爐膽和回燃室組成。油(氣)由燃燒機(jī)噴入燃燒室進(jìn)行燃燒，生成的高溫?zé)煔饨?jīng)回燃室折入第二回程傳熱優(yōu)良的螺紋煙管，再經(jīng)前煙箱折回第三回程煙管，最后經(jīng)后煙箱及煙囪排入大氣。 WNS系列全自動燃油、燃?xì)忮仩t，采用全對接焊縫、濕背式先進(jìn)結(jié)構(gòu)及高效傳熱元件，配套進(jìn)口燃燒機(jī)及多種安全裝置，具有體積小、重量輕、占地面積小、升壓快、高效節(jié)能及環(huán)保效益好等特點(diǎn)，深受廣大用戶的青睞。 WNS automatic fuel oil (gas) boiler is horizontal type with internal combustion and wetted back three-return fire pipes. The combustion chamber is composed of corrugated furnace and strike-back chamber. Gushing from combustion engine, the fuel oil (gas) combustion chamber is burned and the generated high-temperature smoke returns from strike-back chamber to the second-return thread fire pipe with good heat transmission, and passes through the front fire box to the third-return fire pipes , and at last passes through the back fire box and chimney to the air. WNS automatic fuel oil (gas) boilers adopts full butt-welding, advanced wetted back structure and efficient heat-transmission components and is assembled with imported combustion engine and several safety equip ments. They are favorably received by many customers due to their compactness and lighmess, less land occupancy and quick boosting, efficiency and energy saving and environment protecting.