[Gasification] Gasification or Pyrolysis + Absorption Chiller for Fruit

[Big Daddy]

Gentlemen,

 

I live in the tropics (Puerto Vallarta), and have a very keen desire to
power a refrigeration system from gas. I always assumed it would be some
sort of ammonia refrigeration system, or a super-big version of an RV
fridge. Currently, I build charcoal retorts and charcoal gasifiers. Just
haven't had time to dive into the refrigeration sciences yet.

 

Additionally, there may be a way to use "waste heat" from a retort vs.
direct flame. I just don't have the numbers yet, but am very interested in
this thread.

 

Thank you guys!

 

Troy

 

From: Gasification [mailto:gasification-bounces at lists.bioenergylists.org] On
Behalf Of Tom Miles
Sent: Thursday, August 14, 2014 10:27 AM
To: 'Discussion of biomass pyrolysis and gasification'
Subject: Re: [Gasification] Gasification or Pyrolysis + Absorption Chiller
for Fruit

 

Oscar,

 

Thanks. This is a good start. 

 

Tom 

 

From: Gasification [mailto:gasification-bounces at lists.bioenergylists.org] On
Behalf Of Oscar Jimenez Cabeza
Sent: Thursday, August 14, 2014 11:14 AM
To: 'Discussion of biomass pyrolysis and gasification'
Subject: Re: [Gasification] Gasification or Pyrolysis + Absorption Chiller
for Fruit

 

Dear Tom,

 

I have always been interested in generating cold by using producer gas. I
think it has been an issue which has unfortunately deserved little
attention, when compared to power and heat production.

In order to answer your question,  I am sending my preliminary estimates on
the practical refrigeration capacity you are asking for.

 

1.       Assuming 2.5 tpd of biomass to be gasified, it should deliver
roughly 240 m3/h of producer gas.

2.       Considering a COP value of 0.6 for the chiller.

3.       LHV of the gas of 5000  kJ/m3.

 

My modest estimates of the refrigeration  capacity should be around 200 kW.

 

I hope those figures could be of help to you.

 

Kindest regards.

 

Oscar.

 

 

 

De: Gasification [mailto:gasification-bounces at lists.bioenergylists.org] En
nombre de Tom Miles
Enviado el: jueves, 14 de agosto de 2014 12:08
Para: 'Discussion of biomass pyrolysis and gasification'
Asunto: [Gasification] Gasification or Pyrolysis + Absorption Chiller for
Fruit

 

In the tropics there are needs for making char and cooling fruit. Has anyone
coupled a small pyrolyzer or gasifier up with a boiler and an absorption
chiller? What sizes and capacities make sense? We're looking at a fuel input
of 2-3 tpd. How much char can I make and what practical refrigeration
capacity can I generate? I am assuming that the chiller can get down to
about 36 F (2 C). The cooler the better. 

 

Thanks

 

Tom


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