[Gasification] "Absorption/Sorption" recovery of any waste heat to ice and hot water

[Peter Singfield]

Here is how to make some of that lost heat "productive"

The "physics" of this process:

http://www.limsi.fr/Individu/mpons/than.htm

Using ammonia as the working fluid -- you will get very low temperatures --
but need "hot" waste heat.

Using Alcohol as working fluid -- you do not get such low temps -- but you
can use lower temperature waste heats -- 

Here is an example -- but they want $25 for the "paper" - -so only the
abstract.

If you wish to understand the terms involved -- read the Url at top first.

http://apps.isiknowledge.com/CEL/CIW.cgi?&CustomersID=AIP&Func=Links&ImgLogo
=http%3A%2F%2Fimages.isiknowledge.com%2FImages%2FLinks%2FWOK3%2Ftbretpub.gif
&PointOfEntry=FullRecord&PublisherID=AIP&ReturnLink=http%3A%2F%2Flink.aip.or
g%2Flink%2F%3FSLE%2F124%2F70%2F1&ServiceName=TransferToWos&ServiceUser=Links
&UT=000175330200012&e=bB6I681Llp9_hQKIcUHrk.J6UUCI76oSH5qJzxNCwY5gs7pkB0XBBo
YqOrtkqtgB

Title: A combined cycle of heating and adsorption refrigeration: Theory and
experiment 
Author(s): Wang RZ, Li M, Xu YX, Wu JY, Shou HB 
Source: JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME 124
(1): 70-76 FEB 2002 
Document Type: Article 
Language: English 
Cited References: 11      Times Cited: 0
Abstract: A combined cycle capable of heating and adsorption-refrigeration
is proposed, and the experimental prototype has been installed. The system
consists of a heater, a water bath, an activated carbon-methanol adsorption
bed and an ice box. This system has been tested with electric heating, and
has been found that with 61 MJ heating, the 120 kg water in the bath can be
heated from 22degreesC to 92degreesC, of while 9 kg ice at -1.5degreesC is
made. The calculated COPsystem is 0.0591 and COPcycle is 0.41. After
reconstruction to a real hybrid household water heater-refrigerator, when
55 MJ heating is added to 120 kg of 21degreesC water and the condensing
temperature is controlled at about 30degreesC. The result is the 4 kg water
contained inside the methanol refrigerant evaporator was iced to
-2degreesC. The cooling capacity of the ice and the refrigerant in the
evaporator will maintain the 100 liter cold box for about three days below
5degreesC. The experiments show the potential of the application of the
solar powered hybrid water heater and refrigerator theoretical simulation
has been done, which is in good agreement with experimental results. This
research shows that the hybrid solar water heating and ice-making is
reasonable, and the combined cycle of heating and cooling is meaningful for
real applications of adsorption systems. 
Addresses: 
Wang RZ (reprint author), Shanghai Jiao Tong Univ, Inst Refrigerat &
Cryogenics, Shanghai 200030, Peoples R China

Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogenics, Shanghai 200030,
Peoples R China

Publisher: ASME-AMER SOC MECHANICAL ENG, THREE PARK AVE, NEW YORK, NY
10016-5990 USA 
Subject Category: Energy & Fuels; Engineering, Mechanical 
IDS Number: 547JX 

ISSN: 0199-6231 

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If you just want to do a small refrigeration -- using present state of the
art Absorption refrigeration -- based on Ammonia -- check out this Url:

http://www.lpappliances.com/G-Absorp.html

The first thought that went through my mind after looking that site over was:

Find a Chinese supplier for the complete system!!

China is really into developing absorption systems of all kinds these days.

If you wish to know more about where the big units are going -- such a
building air conditioning using solar absorption system -- check out this url:

http://www.solarserver.de/solarmagazin/artikeljuni2002-e.html

Sorption-assisted air conditioning

Read all about it -- in Germany.

France is big on this technology -- and I even found the abstracts from
1981 -- which must be when I first heard about this in Canada.

This site is in France:

http://www.limsi.fr/Individu/mpons/indexENG.html

And Pons is the "man" that has dedicated his life to it. Lot's of links --
lot's of info -- and at no costs.

Basically -- waste heat (or solar) can be converted into hot water and ice.

So -- you can use waste heat from a gasifier to cool the product gas flow
-- then heat it back up again. 

All with no moving parts!!

So that makes this posting On-Topic.

The: "International Adsorption Society" based in Belgium has an interesting
site:

http://ias.vub.ac.be/

But i have yet to get around to "mining" it.



Peter/Belize