Renewable Energy 6
(7) 867-882 (October, 1995)
Adaptation of an adsorptive solar
refrigerator to Moroccan climates
Bentayeb, F.a; Lemmini, F.a;
Guilleminot, J. J.b
a. Laboratoire d'Energie Solaire, Faculté
des Sciences, B.P. 1014, Rabat, Morocco
b. LIMSI CNRS, B.P. 30, 91406 Orsay, France
In this paper, we introduce a model taking account
of the real operation of an adsorptive solar refrigerator using activated
carbon-methanol pairs, as a function of the climatic conditions: ambient
temperature and insolation. The model is used to simulate the operation
of the refrigerator in two Moroccan climates: Rabat, temperate and humid,
and Marrakech, dry and hot. The numerical simulation shows that the behaviour
of the refrigerator is different from one climate to the other. In Rabat,
which has a Mediterranean climate, the cold room temperature can be maintained
at a value practically always less than 5°C; whereas in Marrakech,
which has a pre-Saharan climate, an overheating problem can arise in the
summer season and temperatures in the cold room can reach 17°C. Results
also show that in both climates we are confronted with the problem of freezing
because the cold room temperatures can be less than 0°C and reach -15°C
in the winter.
Elsevier Science
Item: 0960-1481(94)E0020-6
ISSN: 0960-1481
Solar Energy
60 (2): 77-87 (February, 1997)
Design optimization of the flat
plate collector for a solid absorption solar refrigerator
Enibe, S. O.a; Iloeje, O. C.a
a. National Centre for Energy Research and Development
and Department of Mechanical Engineering, University of Nigeria, Nsukka,
Nigeria
A study of the effects of various collector design
parameters on the performance of a solar powered solid absorption refrigerator
is presented. The refrigerator uses specially treated CaCl2
as absorbent and NH3 as refrigerant and operates intermittently
in a diurnal cycle. The study is undertaken using version 4.0 of a simulation
programme, COSSOR, developed from a transient analysis of the system. A
large number of simulations was undertaken to test the performance of the
refrigerator for various choices of the collector design parameters. The
latter include the plate emissivity and material; absorbent pellet diameter,
thermal conductivity and packing density; collector tube size, spacing
and material; and number of glazing. The refrigerator performance indicators,
namely total condensate yield, mass of ice produced, coefficient of performance
and effective cooling, are presented for the range of values of the collector
parameters of interest. Using a multiple linear regression technique, the
performance indicators are correlated with the collector parameters by
simple linear polynomial expressions. An objective function, suitable for
selecting optimal values of the parameters, is defined, subject to specified
constraints. Optimization was then carried out for the objective function.
For the collector with steel tubes and steel plate, the refrigerator coefficient
of performance obtained with optimal choices of tube size, spacing and
plate emissivity is 0.073, representing an improvement of at least 30%
with respect to the reference collector. A similar level of improvement
was obtained for a collector with aluminium tubes and plate.
http://www.ulb.ac.be/ceese/STAFF/safonov/ISEERC2001/Abstract/Vasiliev_et_al.htm.
Solar/gas sorption heat pumps and refrigerators-nature
friendly heat transport systems
L.L. Vasiliev, D.A.Mishkinis, A.A. Antukh, L.L. Vasiliev Jr.
Luikov Heat & Mass Transfer Institute, National Academy of Sciences,
Minsk, Belarus.
An advanced active carbon fiber(salts) /NH3 heat pumps and
refrigerators with dual sources of energy (solar/gas, solar/electricity)
are considered for providing space heating, cooling and sanitary hot water
for buildings. The high temperature sources of the energy are solar and
gas/electricity. The low temperature sources of energy are - the ground
water, soil, and air. The new refrigerators and heat pumps generation includes
combination of chemicals with an active carbon fiber to increase NH3
sorption capacity. The general goal of this paper is to present the results
of an investigation of a new environmentally friendly thermal machines.
In these designes a physical adsorption and chemical reactions are used
simultaneously for a heat and cold generation. A solar refrigerator
and heat pump is made of a solar collector, absorbed natural gas vessel
(ANG), and compact, portable heating/refrigeration system, which consists
of two small adsorbers with heat pipe heat recovery system.
Energy Conversion and Management 44 (2): 301-312 (January 2003)
Review of solid adsorption solar refrigerator I: an
overview of the refrigeration cycle
E. E. Anyanwu
el.: +234-83-230-974; email: eanyanwu@futo.edu.ng
Department of Mechanical Engineering, Federal University of Technology,
P.M.B. 1526, Owerri, Imo State, Nigeria
Abstract --- A review of the practically realized solid adsorption
solar refrigeration cycles is presented. The cycles also have potentials
for use as heat pumps. They have been classified according to the adsorbate
utilized as: cycles with water as refrigerant, cycles using fluorocarbon
as refrigerant, cycles using ammonia as refrigerant and cycles with alcohols
as refrigerant. The performances of these refrigeration cycles, drawn from
experiences worldwide, are also reported. The actual field testing experiences,
together with the technical and economic constraints that affect popularization
of the systems are reviewed, and their possible solutions are suggested.
Small Power Systems
74550 Dobie Lane
Covelo, CA 95428
Call: 800-972-7179
FAX: 707-983-6525
Email: SPS@pacific.net
Solar Absorption Refrigerator
Small Power Systems has developed a non-electric solar
refrigerator-freezer. The refrigerator uses an aqua-ammonia absorption
system similar to that used in propane refrigerators. The refrigerator
consists of two separate units; the solar collector-generator and the refrigerator
box.
The collector-generator consists of a thermal solar collector and most
of the refrigeration works. It measures about 5' x 4'x 1' and weighs over
100 lbs. It needs to be mounted in a sunny location, the same as any solar
collector.
The refrigerator box is the refrigerator per se and can be placed wherever
is convenient, presumably the kitchen.
When the sun shines, the collector-generator produces ammonia refrigerant
which is stored until night when the actual cooling takes place. To keep
the refrigerator cold through the day and during cloudy weather, there
is built-in storage sufficient for five days. There are no moving parts.
In use, our solar refrigerator is little different from any other refrigerator.
It even has automatic defrost. Currently, the drawbacks are slightly higher
freezer temperatures and a greater temperature variation since there is
only one cycle per day.
We are currently building a very limited number of these refrigerators
for customers who are willing to work with us on the design and put up
with the idiosyncrasies of our current work. We do not currently have a
date when we might have refrigerators in quantity. The interest in these
refrigerators has exceeded our expectations and we are wondering on what
scale to proceed. The cost is also an unknown, but roughly the cost of
a Sunfrost not counting installation is an estimate.
The current plan is to build units 30" wide and 48" and 70" tall. We
are also prototyping a very small unit where the refrigerator box is under
the solar collector so it is all one unit that is left outside. This is
meant to be used for vaccines and to be as low cost and simple as possible.
We do not plan to include a freezer except limited ice-making capacity,
as this simplifies the design. This may be the first model to be generally
available.
Since there has been a lot of interest in North America which wasn't
our original design area, we have been looking seriously at auxiliary cooling
for prolonged cloudy spells. We are trying an external heat pipe for colder
locations and thermoelectric cooling for warmer locations. These have the
advantage of being relatively inexpensive and can be offered as add-ons
instead of requiring extensive redesigning. Even though propane is a natural,
it seems too difficult to implement at present.
We are also considering two technologies which would add to the expense
but make a better product. Even though Owens Corning has canceled their
Aura vacuum panel insulation production, others are working on similar
products. The advantage is better insulation and thinner walls, resulting
in a smaller cabinet. The disadvantages are higher cost and no guarantees
that the product will be able to hold its vacuum for extended time. Guarantees
with most products are under 5 years at present.
The other technology we are considering is keeping the cold storage
outside at the solar collector and using a pump to circulate the cold into
the refrigerator. This would add significantly to the expense and require
electricity, but would simplify installation and keep ammonia out of the
living space.
We feel that safety, particularly in transportation and installation
is a significant issue that needs to be thoroughly looked into before we
can offer these refrigerators to the general public, and this will take
time.
INTERMITTENT ABSORPTION REFRIGERATION
GOOGLE SEARCH RESULTS
Ammonia
RefrigeratorsAbsorption
type
Ammonia Refrigeration Basics is a good source
of basic information should you ... The
Intermittent absorption system
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www.nh3tech.org/absorption.html - 11k
Everywhere in our world, refrigeration
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File Format: PDF/Adobe Acrobat - View as HTML
... because the refrigeration happens
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homepower.com/files/solarice.pdf
Center for Excellence in Absorption
Technology/Heat Pump Theory
... Sargent, SL, "Theoretical Performance
of an Ammonia-Sodium Thiocyanate Intermittent
Absorption Refrigeration Cycle",
Solar Energy, Vol. 12, 1968, pp 137-146. ...
rcl.eng.ohio-state.edu/ ~christ-r/ceat/theory/theory.html
- 14k
AlleLinks.nl
... Title: Experimental study of the intermittent
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www.allelinks.nl/industrie/ absorption-refrigeration.html
- 8k
LinkHoek
... Experimental study of the intermittent
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www.linkhoek.nl/industrie/absorption-refrigeration.html
- 7k
The theoretical performance of the lithium
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Authors: Perry EH. Title: The theoretical performance
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intermittent absorption refrigeration
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Mother Earth News: Feedback on "The
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Absorption cooling, adsorption
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Powered
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Parabolic Reflectors - Solar trough.
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Refrigeration
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www.acs.comcen.com.au/refrigeration.html
- 56k
HEAT - The Wiggle Wiggle Dance, -
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Elementary Operation of the IntermittentAbsorption
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The air-cooled Servel refrigeration cycle.
The complete Servel Design. ...
www.luminet.net/~wenonah/new/heat.htm
Solar Energy Related Dissertations
... A solar powered zeolite absorptionrefrigeration
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seecl.mae.ufl.edu/solar/dissert.html - 18k
Energy Concepts Company - Providing
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... April 12, 1988. 4,744,224 Intermittent
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May 17, 1988. 4,746,502 Liquid Phase Thermal
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www.energy-concepts.com/patents.html - 24k
Chiller/Refrigeration Manufacturers
Chiller/Refrigeration Manufacturers. ...
Carrier, Carrier manufacture Carrier Direct-Fired
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Crosley IcyBall
... The Icyball is an intermittent
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www.ggw.org/~cac/IcyBall/crosley_icyball.html
- 15k
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- 10k
Microsoft PowerPoint - sustainable refrigeration_print
File Format: PDF/Adobe Acrobat
... 29 Heat-Driven System 30 Absorption
(Intermittent) ABSORBER EVAPORATOR GENERATOR
CONDENSER Page 6. 6 31 Absorption •
Working Fluid: – Refrigeration: NH 3 /H ...
www.egi.kth.se/proj/courses/ 4A1623/files/SustRefrHandout.pdf
adsorption, cycle, refrigeration,
heat-pumping
... Basically, the cycle is intermittent
because cold production is not ... Typically, for
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www.limsi.fr/Individu/mpons/pricyc.htm - 9k
ANNEX 1 : CASE : THE MARUATA ISAAC ICE
MAKER
File Format: PDF/Adobe Acrobat - View as HTML
... The system consists of seven Energy
Concepts Double ISAAC (Intermittent Solar Ammonia ... The
Double ISAAC uses an absorption refrigeration
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www.areed.org/training/technology/ solar_ice/ice_annexxes.pdf
JESSE D. KILLION EDUCATION HONORS AND
AWARDS ACADEMIC AREAS OF ...
File Format: PDF/Adobe Acrobat - View as HTML
... for Two-Phase Pressure Drop in the
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www.prism.gatech.edu/~gtg990m/ Killion_CV_2004_no_refs.pdf
REFRIGERATION AND AIR CONDITIONING
SYSTEMS
File Format: Microsoft Word 97 - View as HTML
... Controls. Exam 1. Heat pumps 2. Absorptionrefrigeration
systems 6. Intermittent
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www.me.umn.edu/courses/me5101/files/syll2.doc
Energy Concepts Company - Providing
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...
... The ISAAC Solar Icemaker is an Intermittent
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www.energy-concepts.com/isaac.html - 21k
Pima Community College - Course Objectives
and Outline
... of the Intermittent and Continuous
Absorption
System; Residential Absorption Air
Conditioners; Commercial Absorption Systems;
Servicing
AbsorptionRefrigerators.
...
dco-proxima.dco.pima.edu/catalog/ current/courses/workforce/outlines/HVA105.htm
- 5k
REFRIGERATION FOR DEVELOPING
COUNTRIES
File Format: PDF/Adobe Acrobat - View as HTML
... HDCs) The principle of sorption refrigeration
is shown ... cooler and which has an intermittent
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liquid
absorption and solid ...
www.itdg.org/html/technical_enquiries/ docs/refrigeration_for_dev_countries.pdf
Sustainable Village - MicroEnterprise
- Isaac Solar Ice Maker
... Isaac' is the acronym for Intermittent
Solar Ammonia Absorption Cycle. Ammonia
absorption refrigeration technology
was developed in the 19th century and is ...
www.thesustainablevillage.com/ servlet/display/microenterprise/display/14
- 15k
www.ctdoc.com Cooling Tower Doctor Ch.15
Typical Applications
... Occasionally, cooling towers intended
for
absorption systems are ... unit has its own
refrigeration system. ... Other
systems requiring intermittent process water flow ...
www.ctdoc.com/Ch15.html - 9k
REFRIGERATION
File Format: Microsoft Word 2000 - View as HTML
... The absorption refrigeration
effect can easily be achieved in a simple intermittent
device (named Iceball), which basically consists
on two thick spherical ...
imartinez.etsin.upm.es/bk3/c18/Refrigeration.doc
Dynamic modeling of a solar-driven absorption
chiller
File Format: PDF/Adobe Acrobat - View as HTML
... tudelft.nl Cees HM Machielsen Refrigeration
and Climate ... But not all solar absorption
systems are beneficial. ... is highly
time-dependent and intermittent, a system ...
www.icr2003.org/abstracts/ICR0210.pdf
wb4410A
... Control loops in refrigeration
systems.
... of liquid-liquid heat exchanger in the solution
circuit, absorption, rectification, evaporation
...Intermittent
operation. ...
www.ocp.tudelft.nl/wbmt/fac/ Onderw/WPATR_E/VAKKEN/wb4410ae.htm
- 31k
Sustaianbale
Refrigeration
File Format: PDF/Adobe Acrobat
... It is an intermittent system
...
The sorption systems such as the absorption, the adsorption
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www.egi.kth.se/proj/courses/ 4A1623/files/Sustainable%20Refrigeration.pdf
absorption refrigeration absorption
solution acoustic ... cryogenic cryogenic refrigerator
crystallization cycle. ... instrumentation
insulation
intermittent heating ...
www.sarek.or.kr/reference/ref_01_05.asp?SessionID=
- 101k - Jun 24, 2004
Abstracts of Sponsored Consultancy Projects
Completed
... The system employed was an ammonia-
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system , with the solar collector acting as the
generator during ...
www.geocities.com/pldhar/abstracts.htm - 15k
Theoretical performance of an ammonia-sodium
thiocyanate ...
Title: Theoretical performance of an ammonia-sodium
thiocyanate
intermittent absorptioni
refrigeration cycle. Vol: 12. Pages: 137.
Keywords:
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wire0.ises.org/wire/Publications/SEJIndex.nsf/
0/9bd7daa763bc5052c1256ae60057d2b6?OpenDocument - 6k
Brazilian Journal of Chemical Engineering
- <b>SOLAR REFRIGERATING
...
... Sargent, SL and Beckman WA, Theoretical
Performance of an Ammonia-Sodium Thiocyanate
Intermittent Absorption Refrigeration
Cycle, Solar Energy, 12, 137 (1968). ...
www.scielo.br/scielo.php?script=sci_arttext&
pid=S0104-66321997000300009&lng=en&nrm=iso&tl... - 24k
solar energy in small-scale milk collection
and processing
... Nairobi. Williams, DA 1957 et al.
Intermittentabsorption
cooling systems
with solar refrigeration. Paper No. 57—A—260.
ASME, USA. Winkler, JP. ...
www.fao.org/DOCREP/003/X6541E/X6541E06.htm -
15k
PETROGAS Literature Request
... REFRIGERATION. Models: R-100
R-300 R-400 R-500. ... LEAN OIL ABSORPTION. Model BA Model
GA. ... Intermittent Cycle Absorption
for Tank Truck/Railcar Vapor Control". ...
www.petrogas.org/literature.htm - 25k
Products of EG-Solar: Solar Refrigeration
Systems
Solar Refrigeration Systems. ...
This process can be repeated many times, with intermittent
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www.eg-solar.de/english/products/solarrefrig.htm
- 11k
Absorptionrefrigeration system
for mobile applications utilizing ...
File Format: PDF/Adobe Acrobat
... compared to those for residential
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www.springerlink.com/index/B88BK6BE6YPMTK85.pdf
Syllabus - 4th Class
... Emergency boiler operation. Soot blowers.
Continuous and intermittent blowdown. ... Absorption
Refrigeration: Absorption refrigeration
systems, components, auxiliaries. ...
www.gov.mb.ca/labour/safety/mechanic/trades/syl4th.html
- 29k
MSc(Eng) SEE
... of absorption refrigeration.
Theory of mixtures; absorption continuous cycle; mathematical
and graphical analysis of the cycle; intermittent
systems; lithium ...
www.erc.uct.ac.za/sustainable.htm - 31k
Pons Michel, adsorption, refrigeration,
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.. second the efficiency of the intermittent
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www.limsi.fr/Individu/mpons/than.htm - 23k
Sustainable Village - Products - Isaac
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... Isaac" is the acronym for Intermittent
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- 14k
ICR0210 DYNAMIC MODELLING OF A SMALL-SCALE
NH3/H2O ABSORPTION...
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... Washington, DC 1 ICR0210 DYNAMIC MODELLING
OF A SMALL-SCALE NH3/H2O ABSORPTION CHILLER
Dong-Seon Kim, Lei Wang, Cees HM Machielsen Refrigeration
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www.ocp.tudelft.nl/eth/Research/ EnergyThermodynamics/SolarAC/ICR210.pdf
Power Engineering
... Operation 63 Sootblowers 64 Continuous
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Kaminski Wiki: SolarIcemakers
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www.istori.com/cgi-bin/wiki?SolarIcemakers -
6k
Ch. 11 pre-print
File Format: PDF/Adobe Acrobat - View as HTML
... exclusively for direct-fired absorption
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1108.4
Intermittent Control of the Ventilation ...
www.iapmo.org/common/ROP_UMC/ Preprint_UMC_2003/preprint_ch11.pdf
My Documents\ICOM\149\083
File Format: PDF/Adobe Acrobat - View as HTML
An intermittent operation of ...
The lean (dilute) absorption
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www.desline.com/articoli/4706.pdf
Abstracts
... Tsuguo OKAMOTOï¼ŚToru
TORII [Keywords] solar heat, solar energy, nighttime cooling,
absorption refrigeration, intermittentabsorptionrefrigerator
A lot of ...
www.bme.en.a.u-tokyo.ac.jp/ Imou/Japanese/abstracts(J).htm
- 35k
Magdy Abou Rayan
... Investigation of AbsorptionRefrigeration
System Using Solar Energy. (Defended 1987)
M. Sc. Continuous Operation of the IntermittentAbsorption
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www.mans.eun.eg/faceng/mechanical/rayan.htm -
65k
CLASS 62 REFRIGERATION 62 -
File Format: PDF/Adobe Acrobat - View as HTML
... non-refrigerant fluid flow 106 ..Intermittent
operating of ... sorption cycle 107 ..With
absorption liquid circulation ...
function portions of refrigeration cycle 114 ...
www.uspto.gov/go/classification/uspc062/sched062.pdf
Class 062: REFRIGERATION ( Manual of US
Patent Classification )
Intermittent operating of generation and
sorption cycle. ... With absorption liquid
circulation aided by system ... diverse
function portions of refrigeration cycle. ...
www.uspto.gov/web/offices/ac/ido/oeip/taf/moc/062.htm
- 101k
US Patent Class 62-- REFRIGERATION
... 106, DF, .~.~ Intermittent
operating of generation and ... 107, DF, .~.~ With absorption
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function portions of refrigeration cycle. ...
www.patentec.com/data/class/62.html - 98k
... basis, while LPG fridges are refilled
on a more intermittent basis. ... Table 3: Indicative
Cooling and Refrigeration Technologies
and Costs (US ... Absorption Fridges. ...
www.eurorex.com/ugtoges/cool.htm - 28k
IcyBall Patent #1,740,737
... more particularly to units which are
separable from the refrigerator boxes or ... it operates
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systems, that ...
www.ggw.org/~cac/IcyBall/IB1740737/IB1740737.html
- 40k
Patent Links for Alternative Energy,
Cold Fusion, Fusion, anti ...
... Yozo 4538424 Air cooling unit for
vehicle Meyers, Joseph 4744224 Intermittent solar
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Erickson, Donald C. 5490398 High ...
www.butlerlabs.com/patentlinks.htm - 81k
Operational results of an intermittentabsorption
cooling unit
File Format: PDF/Adobe Acrobat
... This study aims to design and construct
a prototype for an intermittent
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and to examine its implementation. ...
doi.wiley.com/10.1002/er.822
Commercial, Chemical and Dev. Co, -
process intensification
...
... If the usage is intermittent
the interval can be ... carbon bed adsorption Rs 7.47 /kg,
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www.arc-max.com/ccdc/index2. php?act=voc&subact=vocpaper
- 29k
solar energy in small-scale milk collection
and processing
... The principles of an intermittentabsorptionrefrigerator
are illustrated in Fig.
15. The equipment consists essentially of two
containers connected by a tube. ...
www.fao.org/DOCREP/003/X6541E/X6541E03.htm -
29k
August 2001 Web News
... a new 70 kW microturbine with an ammonia-water
absorptionrefrigeration
system ... effective
on motors that run continuously and have intermittent
loads, including ...
www.ecmweb.com/mag/electric_august_web_news/
- 77k
Thermo Group - Publications
.. of potato and pineapple- Effect of intermittent
infrared radiation ... for understanding
the behaviour or absorption chillers,
Intl J of
Refrigeration, 23, 491 ...
serve.me.nus.edu.sg/thermo/thermo_pu.html - 17k
Solar Energy Materials and Solar Cells,
Volume: 76, Issue: 3 ...
... Modeling of an intermittent
solar absorptionrefrigeration system operating
with ammonia–lithium nitrate mixture.
Rivera, CO; Rivera, W. pp. 417-427. ...
elsevier.lib.sjtu.edu.cn/cgi-bin/sciserv. pl?collection=journals&journal=09270248&issue=v76i0003
- 34k
AN ENERGY EFFICIENT SOLAR ICE-MAKER
File Format: PDF/Adobe Acrobat - View as HTML
... above, the system works in an intermittent
way ... mode, the other would be set in for
absorption. ... a dual-purpose;
that is, water heating and refrigeration with one ...
fsec.ucf.edu/ed/iasee/isree/s22236.pdf
F4H
File Format: PDF/Adobe Acrobat - View as HTML
... reversing systems and apparatus—See
intermittent
&c HG1S . . ... sulphuric-acid and
like evaporation and absorption systems
and ... F4H Refrigeration &c—cont F4H ...
www.patent.gov.uk/patent/reference/ukc/f/f4h.pdf
200 Market Street, Portland December
Data Acquisition Report
File Format: PDF/Adobe Acrobat - View as HTML
... Heat Recovery Heat Exchanger and Absorption
Chiller Figure ... finally a Yazaki nominal
10 refrigeration ton (RT ... and
Table 2. Data collection was also intermittent. ...
www.bpa.gov/.../Tech/DG_CHP/200Market/Files/
NAEAPerformance%20report200%20Market%20Street%20Dec%2020021.pdf
Experimental analysis of the absorption
and desorption rates of ...
File Format: PDF/Adobe Acrobat
... 2. DESCRIPTION The small-scale intermittentabsorption
rig, shown in Figure 1 ... separated
from each other and the atmosphere by refrigeration
ball values. ...
doi.wiley.com/10.1002/ (SICI)1099-114X(19981010)22:12%3C1099::AID-ER450%3E3.3.CO;2-B
Emissions and environmental impacts
from air conditioning and ...
File Format: PDF/Adobe Acrobat
... 1 Chillers are refrigeration
machines that cool water ... by a vapor- compression (reverse
Rankine), absorption, or other ...
sum of operating and intermittent losses d ...
arch.rivm.nl/env/int/ipcc/ docs/IPCC-TEAP99/files/m99a3-3.pdf
Emissions and Environmental Impacts
from Air-Conditioning and ...
File Format: PDF/Adobe Acrobat
... Intermittent: Also recurring,
these releases include those ... 1 Chillers are refrigeration
machines that ... compression (reverse
Rankine),
absorption, or other ...
members.cox.net/jamesmcalm/Calm-Emissions_ and_Impacts_from_ACR_Systems--IPCC_TEAP-Petten-1999.pdf
1 2 GENERAL INFORMATION Introduction:
This syllabus has been
...
File Format: PDF/Adobe Acrobat - View as HTML
... Continuous and intermittent
blowdown v. Chemical and mechanical cleaning, boil ... 13
14 K. Absorption Refrigeration
i. Absorptionrefrigeration systems, components ...
www.sopeec.org/StudyGuide/NEW%20FOURTH%20_ 4N_%20CLASS%20ENGINEERS-2002.pdf
Facilities Management and Services
Training Center
File Format: PDF/Adobe Acrobat - View as HTML
... The difference between an absorption
chiller and a vapor ... at the pressure required
to create the refrigeration effect. ...
mild with only a few intermittent days of ...
www.philsch.k12.pa.us/offices/facilities/ images_dept_training/newsletter_august_2003.pdf
outside of the building by continuous
ducts. 1106.7.2 A mechanical
...
File Format: PDF/Adobe Acrobat - View as HTML
... for dire ct - fi red absorption
equipment
... ven- tilation throughout the entire refrigeration
machinery room ... 1108.4 Intermittent
Control of the Ventilation Systems ...
www.iapmo.org/common/CA-Errata_Mech_2002/chap11.pdf
Effects of Intermittent Desiccation
on Nutrient Economy and Growth ...
File Format: PDF/Adobe Acrobat
... a thermostatically controlled refrigeration
unit working ... and only marginally increased
absorption in continuously ...
where there was intermittent desiccation, but ...
aob.oupjournals.org/cgi/reprint/79/3/299.pdf
HPC'01 : "Absorption"
... Shanghai Jiaotong University, Institute
of
refrigeration and cryogenics ... small scale
direct fired absorption chiller ...
almost near to the intermittent running time ...
hpc.01.free.fr/session/absorp.htm - 30k
Solar Hydrogen Project at Neunburg vorm
Wald, Germany
File Format: PDF/Adobe Acrobat - View as HTML
... gas -fired heating boiler, catalytic
heater,
absorptionrefrigeration unit with ... oxidized
- longterm-operating experience, notably in intermittent
working (over ...
www.solarhydrogen.com/pdfs/eng/publications_e_01.pdf
Solar Hydrogen Project at Neunburg vorm Wald,
Germany
File Format: PDF/Adobe Acrobat - View as HTML
Systematic testing of heating units and an absorption
-type refrigeration unit at ... an
energy storage medium, because sunlight is an
intermittent
phenomenon ...
www.solarhydrogen.com/pdfs/eng/press_e_04.pdf
Analysis of a solar heat pipe heating
and absorption cooling ...
... A comprehensive survey of literature
was completed to establish the existing state
of knowledge on intermittent absorptionrefrigeration,
flat-plate solar heat ...
adsabs.harvard.edu/abs/1982PhDT........30M
September 2003
File Format: PDF/Adobe Acrobat
... c. Soot blowers, continuous and intermittent
blowdown. ... BK. ABSORPTION REFRIGERATION:
a. Absorption refrigeration systems,
components, auxiliaries. ...
www.tssa.org/boilers/certification/4th_class_oe.pdf
Energy Conversion and Management, Volume:
37, Issue: 1, January
...
... Investigation of thermal performance
of a solar powered absorption refrigeration
system. ... of cycle performance for a
two stage
intermittent solar refrigerator ...
else.hebis.de/cgi-bin/sciserv.pl?collection=journals&
journal=01968904&issue=v37i0001 - 48k
PTO Manual of Classification for US
patents
.. refrigerant fluid flow 106 ..Intermittent
operating of ... sorption cycle 107 ..With
absorption liquid circulation ...
function portions of refrigeration cyclee 114 ...
www.ibiblio.org/patents/class/CLASS62.html -
32k
Heat engine - encyclopedia article about
Heat engine. Free access ...
... combustion engine' normally refers
to engines in which combustion is intermittent
and there ... Refrigeration; Carnot
refrigerator;
Absorptionrefrigerator;
Heat pump ...
encyclopedia.thefreedictionary.com/heat%20engine
- 39k
List of Publications for Jesse Killion
... heat and mass transfer in falling-film
absorption
," International Journal of Refrigeration,
Vol ... Two-Phase Pressure Drop in the
Intermittent
Flow Regime ...
www.prism.gatech.edu/~gtg990m/pubs.html - 14k
Modul 3.1
... A complete schematic of a solar absorptionrefrigeration
system is shown in figure ... generally
added to the solar collector to offset the intermittent
nature of ...
www.courses.ait.ac.th/ED06.22/ course1/lecs/module3/m31o98.html
- 40k
LHT - BC - Work
... The intermittent cold production
of the reaction cooling device is ... pair in the combination
with absorption devices /16 ...
J. Refrigeration, Vol.20, No.6, pp.390-401 ...
www.fs.uni-lj.si/lht/clani/teksti/bc_doktorat.html
- 24k
Efficient and Better Managed Industrial
Processes
... down and take in heat. The system
is then an intermittent absorption
refrigerator. Adsorption, Absorbates and
Adsorbents When a ...
www.mmsunshine4.freeserve.co.uk/ebmip/n1.htm
- 5k
Energy Matters - Fall 2003
File Format: PDF/Adobe Acrobat - View as HTML
... The hammers’ intermittent
air demand and insufficient compressed ... to produce an
average 300 tons of refrigeration. ...
An absorption unit requiring 5,400 lbs/hr ...
www.nrel.gov/docs/fy04osti/34705.pdf
MSN Encarta - Search View - Solar
Energy
.. the heat that drives the cooling process
(see
Refrigeration).
...Absorption
coolers must
be adapted to operate at the ... Because
of the
intermittent nature of solar ...
encarta.msn.com/text_761554832__1/Solar_Energy.html
- 21k
LGIB guide to the WSSD
... renewable energy technologies are
intermittent
electricity generation ... storage, heat
fired absorption cooling for air conditioning/
refrigeration,
and other ...
www.lgib.gov.uk/popupwok19.htm - 11k
NEWSLETTER
File Format: PDF/Adobe Acrobat - View as HTML
... are summarised in the following: •
Heat and mass transfer in refrigeration equip-
ment (19 ... Absorption (4) Assessment
of an intermittent solar solid ...
www.jsmf.gr.jp/ICeM/No20.pdf
Chapter 7: Energy Management
... be a by-product of the absorption
unit, and ... work best where demand is intermittent,
such as ... methane production for cooking
and
refrigeration, and generation of ...
www.nps.gov/dsc/dsgncnstr/gpsd/ch7.html - 21k
CENTRO DE INVESTIGACION EN ENERGÃŤA
- [ Translate this page ]
... Rivera, W.; and Rivera, CO, "Modelling
of a CPC working as agenerator-absorber
in an intermittent solar absorptionrefrigeration
system operating with the ...
www.smf.mx/Catalogo03/MEXICO/CIE/cie.html - 51k
Program and Registration
File Format: PDF/Adobe Acrobat - View as HTML
... EnergÃa, Temixco, Morelos,
México â€Modelling of a CPC Working as the Generator-Absorber
of an Intermittent Solar AbsorptionRefrigeration
System Operating ...
www.solarpaces2002.ethz.ch/ doc/SolarPaces2002_lowres.pdf
REALISATION EXPERIMENTALE Dâ€UN
REFRIGERATEUR SOLAIRE A ...
File Format: PDF/Adobe Acrobat - View as HTML
... 2. PRINCIPE DE LA REFRIGERATION
SOLAIRE PAR ... à adsorption à cycle intermittent
quaritherme
étudiée ...
sélective permettant une bonne
absorption du rayonnement
...
www.fst.ac.ma/fier/43.PDF
MODULE 15
File Format: PDF/Adobe Acrobat - View as HTML
... Absorption Cooling An absorptionrefrigeration
system may be ... Typically, absorption
chillers use 2 to 2½ kg ...
generators and users, have intermittent rather than ...
www.siemp.co.zw/Acrobat%20Files/module15.PDF
The Commercial Storage of Fruits,
Vegetables, and
File Format: PDF/Adobe Acrobat - View as HTML
... This can be done by intermittent
operation of fans or by keeping the ... A few facilities
use absorption refrigeration, although
this is only cost-effective if ...
www.ba.ars.usda.gov/hb66/011precooling.pdf
Bubble Pump Design for Single Pressure
Absorption
File Format: PDF/Adobe Acrobat - View as HTML
... 2 Single Pressure AbsorptionRefrigeration
.....
3 The Platen-Munters ...
www.me.gatech.edu/energy/SusanThesis.pdf
Handbook Publications
... Cycle to Improve COP of Aqua-ammonia
AbsorptionRefrigeration
System", ASHRAE ... of a
Cylindrical Parabolic Collector Operated with
Intermittent
Tracking", In SUN ...
www.rit.edu/~taleme/publications.htm - 68k
BR&E - Technical Papers - Copyright
2001
.. They also comment on how intermittent
methanol injection was first used to ... wash has
a temperature of –50°F.
Ammonia
absorptionrefrigeration maintains the ...
www.bre.com/technicalpapers/ technicalpaper.asp?articlenumber=15
- 101k
Hydrogen gas (H ) can be used for cooking,
water heating, space ...
File Format: PDF/Adobe Acrobat - View as HTML
... Perhaps an absorption refrigerator
could be applied to ... Water absorption on these so-called
molecular ... back-flow preventer (for
intermittent
operation), upstream ...
www.homepower.com/files/Hp67p42.pdf
New version
... adsorbs various odors, usually by
principle of absorption. ... HERMETIC SYSTEM: Refrigeration
system which has a ... INTERMITTENT
CYCLE: Cycle which repeats itself at ...
www.koreapat.co.kr/mecterm.html - 43k
Sorption
Refrigeration Research
in SJTU
File Format: PDF/Adobe Acrobat - View as HTML
... Various adsorption refrigeration
cycles have been investigated in SJTU, the typical
examples are intermittent solar adsorption
cycle (Li,Wang,2002), two bed ...
www.sorption.sjtu.edu.cn/works/news/ Sorption%20Refrigeration%20Research%20in%20SJTU20020507.pdf
Solar-Gas Solid Sorption Refrigerator
File Format: PDF/Adobe Acrobat
... absorption coefficient of a
solar receiver up to 92%. This system needs to have
a solar oriented mechanism to move solar concentrator.
Solar/gas refrigerator ...
www.kluweronline.com/article.asp?PIPS=354854&PDF=1
Authors
File Format: PDF/Adobe Acrobat - View as HTML
... type of chiller using vapour compression
refrigeration.
...
is produced in the process
of absorption. ... effective capacity
of an intermittent or unreliable
...
www.wwf.org.au/News_and_information/ Publications/PDF/Report/cef_chapter1.pdf
-
Direct Heat
File Format: PDF/Adobe Acrobat
... the need for storage tanks required
with intermittent pump operation. ... energy using
lithium bromide and ammonia absorptionrefrigeration
systems (Rafferty, 1989 ...
geoheat.oit.edu/pdf/tp23.pdf
Solar Energy, Volume: 69, Issue: 1,
2000
.. non-equilibrium model for an intermittent
adsorption cooling system. Zhang, LZ pp.
27-35. ... Multi-pressure absorption
cycles in solar refrigeration: A technical ...
else.hebis.de/cgi-bin/sciserv.pl?collection=journals&
journal=0038092x&issue=v69i0001 - 25k
DIVISION OF MECHANICAL ENGINEERING (ME)
File Format: PDF/Adobe Acrobat - View as HTML
... Vapour Page 13. 18-Nov-02 428 absorptionrefrigeration
system. Ammonia water
and Lithium Bromide water systems. Steam jet
refrigeration
system. ...
karunya.ac.in/Syllabus/Mech-be.pdf
Some Recommended Links to Intermittent Absorption
Refrigeration:
http://www.mmsunshine4.freeserve.co.uk/ebmip/n1.htm
http://rcl.eng.ohio-state.edu/~christ-r/ceat/theory/theory.html
http://www.linkhoek.nl/industrie/absorption-refrigeration.html
