Infrared tube heaters.Unitized low-intensity gas-fired infrared tube heaters are offered in 19 different heater models in more than 100 configurations. Available in both natural and propane propane, CH3CH2CH3, colorless, gaseous alkane. It is readily liquefied by compression and cooling. It melts at −189.9°C; and boils at −42.2°C;. gas, the ETS/ETU Series low-intensity infrared tube heaters range in capacity from 40,000 to 250,000 btu/hr. System lengths vary from 15 to 80 feet. ETS ETS Educational Testing Service (nonprofit private educational testing and measurement organization) ETS Emergency Telecommunications Service ETS Electronic Trading System ETS Engineering (&) Technical Services Series tube heaters are available in multiple configurations, including straight, L-shaped, expanded U-shaped or Z-shaped, and are said to be ideal to meet complete building heating requirements. For added versatility, 90[degrees] elbows, corner reflectors and side reflectors are available for close mounting near walls, doors and corners. In contrast, the ETU ETU Electrical Trades Union ETU Ethylene Thiourea (pesticide & fungicide) ETU European Taekwondo Union ETU Educational Technology Unit ETU Elementary Time Unit (SIM card timing unit) Series tube heaters come in seven different configurations and provide more uniform radiant heat heat proceeding in right lines, or directly from the heated body, after the manner of light, in distinction from heat conducted or carried by intervening media. See also: Radiant distribution. Space-Ray Circle 22 on card |
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