World Library  
Flag as Inappropriate
Email this Article

Gas heater

Article Id: WHEBN0001972636
Reproduction Date:

Title: Gas heater  
Author: World Heritage Encyclopedia
Language: English
Subject: Central heating, Aabsal, Ventilation (architecture), Kerosene heater, Swimming pool sanitation
Collection: Burners, Heaters
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Gas heater

Gas heater, 1970s

A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane or butane.

Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented.

Contents

  • History 1
  • Flued heaters 2
  • Non-flued heaters 3
    • Operation 3.1
  • See also 4
  • References 5

History

The first gas heater made use of the same principles of the Bunsen burner invented in the previous year. It was first commercialized by the English company Pettit and Smith in 1856. The flame heats the air locally. This heated air then spreads by convection, thus heating the whole room. Today the same principle applies with outdoor patio heaters or "mushroom heaters" which act as giant Bunsen burners.

Beginning in 1881 the burner's flame was used to heat a structure made of asbestos, a design patented by Sigismund Leoni, a British engineer. Later, fire clay replaced the asbestos because it is easier to mould. Modern gas heaters still work this way although using other refractory material.

Modern gas heaters have been further developed to include units which utilize radiant heat technology, rather than the principles of the Bunsen burner. This form of technology does not spread via convection, but rather, is absorbed by people and objects in its path. This form of heating is particularly useful for outdoor heating, where it is more economical than heating air that is free to move away.

Flued heaters

Flued heaters would always be permanently installed. The flue, if properly installed with correct overall height, should extract most heater emissions. A correctly operating flued gas heater is usually safe.

Non-flued heaters

Non-flued heaters – also known as unvented heaters, ventfree heaters or flueless fires may be either permanently installed or portable, and sometimes incorporate a catalytic converter.[1] Non-flued heaters can be risky if appropriate safety procedures are not followed. There must be adequate ventilation, they must be kept clean, and they should always be switched off before sleeping. If operating correctly the main emissions of a non-flued gas heater are water vapour and carbon dioxide.

Operation

Home gas heating controls cycle using a mechanical or electronic thermostat. Gas flow is actuated with a valve. Ignition is by electric filament or pilot light. Flames heat a radiator in the air duct but outside the flue, convection or a fan may distribute the heat.

See also

References

  1. ^ Flueless gas fires
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.