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Portal:Heat exchangers

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| '''                 Highlighted Heat exchanger'''
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| An idea of how to make your home or business more<br>energy efficient.
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[[Engineering for sustainable development|Engineering for sustainable development]]

A heat exchanger is a device built for efficient heat transfer from one medium to another. The media may be separated by a solid wall, so that they never mix, or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, natural gas processing, and sewage treatment. One common example of a heat exchanger is the radiator in a car, in which the heat source, being a hot engine-cooling fluid, water, transfers heat to air flowing through the radiator (i.e. the heat transfer medium).

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http://en.wikipedia.org/wiki/Heat_exchanger

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http://en.wikipedia.org/wiki/Drain_water_heat_recovery

http://en.wikipedia.org/wiki/Heat_recovery_ventilation

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Energy recovery ventilators (ERVs) are closely related, however ERVs also transfer the humidity level of the exhaust air to the intake air.<br><u>http://en.wikipedia.org/wiki/Energy_recovery_ventilation</u>

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Shell and tube heat exchanger

Plate heat exchanger<br>Plate fin heat exchanger<br>Ground-coupled heat exchanger<br>Dynamic scraped surface heat exchanger<br>Waste Heat Recovery Unit<br>Micro heat exchanger<br>Moving bed heat exchanger

<br>There are a number of heat exchangers used in Heat recovery ventilation-HRV devices, as diagrammed to the right&nbsp;:<br>&nbsp;&nbsp; &nbsp; cross flow heat exchanger up to 60% efficient (passive)<br>&nbsp;&nbsp; &nbsp; countercurrent heat exchanger up to 99% efficient (passive)<br>&nbsp;&nbsp; &nbsp; rotary heat exchanger (requires motor to turn wheel)<br>&nbsp;&nbsp; &nbsp; heat pipes<br>&nbsp;&nbsp; &nbsp; thin multiple heat wires (Fine wire heat exchanger)<br>

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Incoming air<br>The air coming into the heat exchanger should be at least 0°C. Otherwise humidity in the outgoing air may condense, freeze and block the heat exchanger.<br>A high enough incoming air temperature can also be achieved by<br>recirculating some of the exhaust air (causing loss of air quality) when required,<br>by using a very small (1 kW) heat pump to warm the inlet air above freezing before it enters the HRV. (The 'cold' side of this heatpump is situated in the warm air outlet.)<br>using a heating "battery" supplied by heat from a heat source eg hot water circuit from a wood fired boiler, etc.<br>

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Earth-to-air heat exchanger

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Heat recovery ventilation, often with an earth-to-air heat exchanger, is essential to achieve German Passivhaus standards.<br>Main article: Ground-coupled heat exchanger

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See also....

Air conditioning - Health implications<br>HVAC....................&nbsp;http://en.wikipedia.org/wiki/HVAC

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Types:

http://images.wikia.com/solarcooking/images/2/2e/Granada06_david_denkenberger.pdf

The plastic bags was for the heat exchanger - thesis found here:<br>http://gradworks.umi.com/34/19/3419453.html

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http://www.appropedia.org/Ground_source_heat_pumps

http://www.appropedia.org/Solar_hot_water

http://en.wikipedia.org/wiki/Solar_air_heat

http://www.appropedia.org/Measures_to_stop_global_warming

http://www.appropedia.org/Original:Solar_thermal_energy

solar wall

http://en.wikipedia.org/wiki/Geothermal_heat_pump<br>http://en.wikipedia.org/wiki/Direct_exchange_geothermal_heat_pump<br>http://en.wikipedia.org/wiki/Deep_water_source_cooling<br>http://en.wikipedia.org/wiki/Solar_thermal_energy<br>http://en.wikipedia.org/wiki/Trombe_wall<br>http://www.appropedia.org/Appropriate_technology

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http://www.enwave.com/

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See also: Sterling Engine

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{{break clear}}

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| width="33.3%" | '''<big>Sample pages</big>'''
'''Developmental Need''':

''Water''

*[[Uv water treatment]]

*[[Hydraulic ram pumps]]

''Lighting''

*[[LED lighting]]

''Electricity''

*[[MicroHydro: Civil Engineering Aspects]]
*[[Photovoltaics]]

''Shelter''

*[[Papercrete vs. StrawBale]]

''Food''

*[[How to Practice Sustainable Agriculture]]

''Transportation''

*[[Vegetable oil as fuel]]

<br> '''Conventional Discipline''':

''General''

*[[Mech425 AT Project]]

''Chemical Engineering''

*[[Polymer environmental-friendly resin]]

*[[Uv water treatment]]

''Civil Engineering''

*[[MicroHydro: Civil Engineering Aspects]]

*[[Papercrete vs. StrawBale]]

''Electrical Engineering''

*[[LED lighting]]

''Materials Engineering''

*[[Papercrete vs. StrawBale]]

''Mechanical Engineering''

*[[Hydraulic ram pumps]]

*[[Vegetable oil as fuel]]

<br> <!-- RIGHT COLUMN, SHOWS AN EMBEDDED NEWS FEED ON A RELEVANT TOPIC -->

| width="33.3%" | '''<big>External Links</big>'''
'''General''':

*[http://www.engineersagainstpoverty.org/ Engineers Against Poverty]
*[http://www.ewb-international.org/ Engineers Without Borders]
*[http://www.fost-nepal.org/ The Foundation for Sustainable Technologies]
*[http://www.ncat.org/ National Center for Appropriate Technology]
*[http://www.eswusa.org/ Engineers for a Sustainable World]
*[http://www.engineeraid.com/ EngineerAid Official Website]
*[http://www.scienceforhumanity.net/ Science for Humanity]

'''Developmental Need''':

''Water''

*[http://www.lwdgc-africa.org/index.html Life and Water Development Group Cameroon, Africa]

''Electricity''

*[http://www.hlf.org.np/ The Himalayan Light Foundation]

<br> '''Conventional Discipline''':

''Architecture Engineering''

*[http://www.worldgbc.org/council-development World Green Building Council]

*[http://www.aecb.net/ The Sustainable Building Association]

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''Chemical Engineering''

<br> ''Civil Engineering''

*[http://www.saice.org.za/ The South African Institution of Civil Engineering]

''Electrical Engineering''

''Industrial Engineering''

*[http://www.nisp.org.uk/ The National Industrial Symbiosis Programme]

''Materials Engineering''

''Mechanical Engineering''

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*[http://www.ewb-international.org/ Engineers Without Borders]

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= Funding Opportunities for Engineers =

See also: [[Grants]]

*A list of funding opportunities, mostly in the United States, can be found [http://www.smartcommunities.ncat.org/management/financl.shtml here].
*The National Science Foundation (of the USA) is offering an [http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=501027 environmental sustainability program] that supports research in the area of [[Engineering for sustainable development]].
*Canadian homeowners and small business owners can [http://oee.nrcan.gc.ca/corporate/incentives.cfm?attr=0 apply for grants and financial initiatives] from Natural Resources Canada for improving energy efficiency.
*The [http://www.udayton.edu/engineering/opportunities_and_activities.php School of Engineering Learn, Lead and Serve (LLS) Fund] is a program at the Catholic University of Dayton in Ohio that offers $1,000 to $2,000 grants to individuals and groups for engineering research and community service. Grants and scholarships of this type are likely offered to students at other universities and colleges around the world.
*The Bank of America offers funds to organizations and students through the [http://www.bankofamerica.com/foundation/index.cfm?template=fd_neighborexcell Neighborhood Excellence Initiative]. The initiative supports community work in the areas of education, neighborhood preservation, arts and culture, and health and human services.
*The [http://www.energy.ca.gov/research/innovations/index.html Energy Innovations Small Grant Program] provides grants for "small businesses, non-profits, individuals and academic institutions to conduct research that establishes the feasibility of new, innovative energy concepts".
*Banks like the [http://www.sbcreditunion.com/solarloans.htm Santa Barbara County Federal Credit Union offer loans for installing solar power systems.
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= Job Opportunities =

See also: [[Jobs]]

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= Journals =

See also: [[Journals]]

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= Work to be Done =

{{get involved}}

'''Stubs that need to be expanded:'''

*[[Life cycle analysis|http://www.appropedia.org/Heat_Exchangers]]
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See also: [[Suggested projects]]

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= Education for Engineering for Sustainable Development =

*[[Engineering for Sustainable Development]] is an Appropedia page with external links to education programs and courses.
*[[Service learning]] is a great way to accomplish education while providing a useful service. Engineers learn well through practically applying their skills. See [[Service learning in engineering]] for more information.
*The [http://www.engsc.ac.uk/er/sustainable/index.asp Engineering Subject Centre] in the UK offers resources for Education for [[Sustainable Development]].
*The [http://me.queensu.ca/sustainability/index.php Applied Sustainability Research Group] within the Department of Mechanical and Materials Engineering at [[Queen's University]] in Kingston, Ontario, Canada led by [[User:J.M.Pearce|J.M.Pearce]] provides the opportunity for research and education on engineering for sustainable development.
*The [http://www.aashe.org/resources/grad_Sustainable_Development.php Association for the Advancement of Sustainability in Higher Education] lists education programs in the United States.
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= Tools =

*The [[Open source engineering software]] page has many links to various open source software programs used in engineering.
*[http://www.thingiverse.com/ Thingiverse] is a website where people can share digital designs. It also provides a way to upload non-compliant files to be shared on Appropedia pages.
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= Companies involved in creating heat exchangers =

'''United States'''

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<br> '''Canada'''

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== Footnotes ==

<references />

{{DEFAULTSORT:{{Heat exchanger}}}}

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