“Fan death”的意思、由来-开放百科全书

Fan death is a well-known superstition in Korean culture, where it is thought that running an electric fan in a closed room with unopened or no windows will prove fatal. Despite no concrete evidence to support the concept, belief in fan death persists to this day in Korea.

Origins of the belief

Where the idea came from is unclear, but fears about electric fans date almost to their introduction to Korea, with stories dating to the 1920s and 1930s warning of the risks of nausea, asphyxiation, and facial paralysis from the new technology.^[1]^[2]

One conspiracy theory is that the South Korean government created or perpetuated the myth as propaganda to curb the energy consumption of South Korean households during the 1970s energy crisis, but Slate reports that the myth is much older than that – dating almost as far back as the introduction of electric fans in Korea, and cites a 1927 article about "Strange Harm from Electric Fans".^[1]^[3]^[4]

Proposed causes

Hyperthermia (heat stress)

Air movement will increase sweat evaporation, which cools the body. But in extreme heat – when the blown air is warmer than the body's temperature – it will increase the heat stress placed on the body, potentially speeding the onset of heat exhaustion and other detrimental conditions. The American Environmental Protection Agency (EPA) discourages people from using fans in closed rooms without ventilation when the heat index is above {{convert|32|C|F}}. The EPA does, however, approve of using a fan if a window is open and it is cooler outside, or when the heat index in a closed room is lower.^[5]

Hypothermia

Asphyxiation

It is alleged that fans may cause asphyxiation by oxygen displacement and carbon dioxide intoxication.^[6]^[7]^[8]^[9] In the process of human respiration, inhaled fresh air is exhaled with a lower concentration of oxygen gas (O₂) and higher concentration of carbon dioxide gas (CO₂), causing a gradual reduction of O₂ and buildup of CO₂ in a completely unventilated room.^[10]

This belief bears a similarity to a once-popular misconception which claimed that a person in a closed room with plants would asphyxiate if the room was not kept ventilated, as the plant's respiratory processes would supposedly consume all the oxygen in the room.^[11]

Media coverage

During the summer, mainstream South Korean news sources regularly report alleged cases of fan death. A typical example is this excerpt from the July 4, 2011, edition of The Korea Herald, an English-language newspaper:

This article also noted there was "no evidence" the fan caused the death, however. University of Miami researcher Larry Kalkstein says a misunderstanding in translation resulted in his accidental endorsement of the fan death theory, which he denies is a real phenomenon.^[13]

South Korean government

The Korea Consumer Protection Board (KCPB), a South Korean government-funded public agency, issued a consumer safety alert in 2006 warning that "asphyxiation from electric fans and air conditioners" was among South Korea's five most common summer accidents or injuries, according to data they collected.^[14] The KCPB published the following:

If bodies are exposed to electric fans or air conditioners for too long, it causes [the] bodies to lose water and [causes] hypothermia. If directly in contact with [air current from] a fan, this could lead to death from [an] increase of carbon dioxide saturation concentration and decrease of oxygen concentration. The risks are higher for the elderly and patients with respiratory problems. From 2003 [to] 2005, a total of 20 cases were reported through the CISS involving asphyxiations caused by leaving electric fans and air conditioners on while sleeping. To prevent asphyxiation, timers should be set, wind direction should be rotated, and doors should be left open.

See also

References

1. ^¹²{{cite web |url=http://www.slate.com/articles/life/foreigners/2013/01/fan_death_korean_moms_think_that_your_electric_fan_will_kill_you.html | title = Is Your Electric Fan Trying to Kill You? Fan death in Korea, the dangers of wearing red in the Philippines, and other momisms from around the world. | first = Ken | last = Jennings | authorlink = Ken Jennings | date = Jan 22, 2013 | work = Slate }}
2. ^"Strange Harm From Electric Fans", Jungoe Ilbo (Domestic and International Daily), July 31, 1927,"The rotating fan blades create a vacuum directly in front, and the intensity of the resulting air flow always results in an insufficient supply of oxygen to the lungs." {{ko icon}}
3. ^{{cite web |url=http://www.snopes.com/medical/freakish/fandeath.asp |title=Fan Death |publisher=Snopes.com |date=6 June 2011}}
4. ^{{cite web|last1=Herskovitz |first1=Jon |last2=Kim |first2=Jessica |url=https://www.reuters.com/article/2007/07/09/us-korea-fans-idUSSEO21026120070709 |title=Electric fans and South Koreans: a deadly mix? |publisher=Reuters |date=2007-07-09 |accessdate=2013-07-21}}
5. ^Excessive Heat Events Guidebook, United States Environmental Protection Agency. "Annex B: Use of Portable Electric Fans During Excessive Heat Events ... Don't Use a portable electric fan in a closed room without windows or doors open to the outside. ... Don't Use a portable electric fan to blow extremely hot air on yourself. Thiscan accelerate the risk of heat exhaustion. ... Annex C: Excessive Heat Events Guidebook in Brief ... Don't direct the flow of portable electric fans toward yourself when room temperature is hotter than 90 °F."
6. ^¹Surridge, Grant. (2004-09-22). [https://web.archive.org/web/20070110052746/http://joongangdaily.joins.com/200409/22/200409222123324579900091009101.html "Newspapers fan belief in urban myth."] JoongAng Daily, via joongangdaily.joins.com and archive.org. Retrieved on 2007-08-30.
7. ^{{cite web| last = Adams| first = Cecil| title = Will sleeping in a closed room with an electric fan cause death?| work = The Straight Dope| date = 1997-09-12| url = http://www.straightdope.com/columns/read/1245/will-sleeping-in-a-closed-room-with-an-electric-fan-cause-death| publisher = Chicago Reader, Inc.| accessdate = 2007-08-02 }}
8. ^Watanabe, Toshifumi, and Masahiko Morita. (1998-08-31). "Asphyxia due to oxygen deficiency by gaseous substances." Forensic Science International, Volume 96, Issue 1, Pages 47–59. Retrieved on 2007-09-06.
9. ^Gill, James R., Susan F. Ely, and Zhongxue Hua. (2002). "Environmental Gas Displacement: Three Accidental Deaths in the Workplace." The American Journal of Forensic Medicine and Pathology, 23(1):26 –30, 2002. Retrieved on 2007-09-06.
10. ^"Concentrated Carbon Dioxide in Western Pennsylvania." {{webarchive|url=https://web.archive.org/web/20071008061456/http://www.pittsburghgeologicalsociety.org/carbondioxide.pdf |date=2007-10-08 }} The Pittsburgh Geological Society. Retrieved on 2007-09-06.
11. ^Sleeping With Plants, Danit Brown, Indiana Public Media, retrieved July 19, 2016 at http://indianapublicmedia.org/amomentofscience/sleeping-with-plants
12. ^{{cite web|url=http://www.koreaherald.com/national/Detail.jsp?newsMLId=20110704000552 |title=Summer death revives fan death myth |date=2011-07-04 |archiveurl=https://web.archive.org/web/20111125084109/http://www.koreaherald.com/national/Detail.jsp?newsMLId=20110704000552 |archivedate=2011-11-25 |publisher=The Korea Herald |deadurl=yes |df= }}
13. ^[https://www.npr.org/templates/transcript/transcript.php?storyId=430341089 South Korea's Quirky Notions About Electric Fans]
14. ^{{cite press release | title = Beware of Summer Hazards! | publisher = Korea Consumer Protection Board (KCPB) | date = 2006-07-18 | url = http://english.cpb.or.kr/user/bbs/code02_detail.php?av_jbno=2006071800002 | archiveurl = https://web.archive.org/web/20070927051420/http://english.cpb.or.kr/user/bbs/code02_detail.php?av_jbno=2006071800002 | archivedate = 2007-09-27 | accessdate = 2007-09-01}}