Can Waste Heat from an Oven Power an Absorption Refrigerator?

AI Thread Summary
Using waste heat from a tunnel oven can effectively power an absorption refrigerator, with the LiBr-H2O system recommended as the optimal refrigerant. To implement this, it's essential to ensure the heat source reaches a minimum temperature to maintain system efficiency. The Carnot efficiency formula provides a framework for understanding the temperature requirements, with T1 representing the heat source temperature. Proper integration of the refrigerant into the system is crucial for effective operation. Utilizing waste heat not only enhances energy efficiency but also reduces operational costs.
Qonjex
Messages
2
Reaction score
0
Hello people I need your help.

I am kind new to refrigeration and I want to design one. I have a waste exhaust heat from the Exhaust of the tunnel oven that I have designed. Now I want to use that waste heat as the heat source for the Absorption refrigerator.

Q1: what's the best solution I can use as a refrigerant?

Q2: how can I put that solution into the system?

Thank you a lot.
 
Engineering news on Phys.org
For absorption refrigerator, you can use LiBr-H2O system.
 
Thank you very much. What is minimum temperature that I should apply as a heat source to make the system work?
 
Carnot Efficiency of absorption cycle = ((T1-T2)/T1) * (T4/(T3-T4))
T1 = temperature of heat source
T4 = temperature of refrigerated space
T2 = T3 = ambient temperature
All values are in kelvin
 
Last edited:
LiBr-H2O system is the best.
 
I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them. The math I'm using is: FA = MA / 2 = ? t-force MB * SIN(of the incline degree) = ? If MB is greater then FA, it pulls FA up as MB moves down the incline. BUT... If I reverse the 2:1 pulley. Then the math changes to... FA = MA * 2 = ? t-force MB * SIN(of the incline degree) = ? If FA is greater then MB, it pulls MB up the incline as FA moves down. It's confusing...
Hi. I noticed that all electronic devices in my household that also tell time eventually lag behind, except the ones that get synchronized by radio signal or internet. Most of them are battery-powered, except my alarm clock (which runs slow as well). Why does none of them run too fast? Deliberate design (why)? Wrong temperature for quartz crystal? Decreasing battery voltage? Or just a coincidence?
Back
Top