HVAC

Ventilation duct with outlet vent. These are installed throughout a building to move air in or out of a room.

HVAC ventilation exhaust for a 12-story building

HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers).

单词	Heating, Ventilation, and Air Conditioning
释义	Heating, Ventilation, and Air Conditioning 原声例句当月 VOA Special English HVAC stands for heating, ventilation, and air conditioning. “HVAC”是供暖、通风和空调的缩写。大学生活 Crash Course So if you start out wanting to be a chef and enroll in culinary school but then decide your passion was really heating, ventilation, and air conditioning systems, that's going to be tricky — but not impossible with planning! 所以，如果你一开始想成为一名厨师，并注册了烹饪学校，但后来发现你真正的热情在于供热、通风和空调系统，这就很棘手了——但不是通过合理计划也不是不可能！英语百科 HVAC HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers).
随便看	Hērēgēl Hīchān Hīrna Hīsh Hōfu Hōjō Hōlualoa Hōnaunau Hōrai hoya Hūdī Hūrand Hūtak Hūvār Hūzgān Hǒhangnyǒng Hǔkryǒng Hǔngsang Hιnzιr Burun Hιnιs Hφgefoss Hφgild Hφgsfjorden Hφjby Hφjen

Heating, Ventilation, and Air Conditioning

HVAC