iggie
Active Member
I see many people here building cold rooms and kegerators and keezers and they all look marvelous. Of course, now I want to build one of my own. I keep wondering about the design of refrigerators. This is probably going to be confusing and long winded so please bear with me.
My understanding of refrigeration:
Refrigeration works on the principle of "absorbing" heat with a gas and then transferring it out of the desired room where it is compressed back to a liquid form so that it will release it's heat in a dispersion coil. These are endo and exothermic reaction properties inherent to certain gasses and some are better at this than others.
So with that in mind, I have these questions:
1.) Hot air rises correct? Then why on earth are the evaporator coils of refrigeration units usually on the BACK interior walls of refrigerators? Wouldn't logic dictate that, in order to make more efficient use of your endothermic reaction, your evaporator coils be on the uppermost portion of your refrigerated unit with fans just slightly above these coils to gently encourage the warmer air towards the coils and their output then deflected out and away from the coils along the ceiling?
2.) Why is a window style air conditioner ideal for cold rooms instead of building it much like a giant walk in cooler based on a (by my possibly sloppy logic) more efficient refrigeration model?
I ask these questions because I'm looking into building a walk in cooler built to my specifications with the most efficient cooling properties possible. I know that I don't know everything there is to know about refrigeration and I have lots to learn. But I guess my google-fu is weak. I've been searching for answers on this topic for approx. 48 hours now and have yielded some ... less than satisfactory results. Any inputs would be appreciated and I can sketch out what I'm envisioning if anyone is having a hard time seeing what I'm talking about.
Here's to hoping I don't get flamed.
*edit* If this is in the wrong forum, please move me. I just figured that since I'm wanting to build this myself, it should be in the DIY forum.
My understanding of refrigeration:
Refrigeration works on the principle of "absorbing" heat with a gas and then transferring it out of the desired room where it is compressed back to a liquid form so that it will release it's heat in a dispersion coil. These are endo and exothermic reaction properties inherent to certain gasses and some are better at this than others.
So with that in mind, I have these questions:
1.) Hot air rises correct? Then why on earth are the evaporator coils of refrigeration units usually on the BACK interior walls of refrigerators? Wouldn't logic dictate that, in order to make more efficient use of your endothermic reaction, your evaporator coils be on the uppermost portion of your refrigerated unit with fans just slightly above these coils to gently encourage the warmer air towards the coils and their output then deflected out and away from the coils along the ceiling?
2.) Why is a window style air conditioner ideal for cold rooms instead of building it much like a giant walk in cooler based on a (by my possibly sloppy logic) more efficient refrigeration model?
I ask these questions because I'm looking into building a walk in cooler built to my specifications with the most efficient cooling properties possible. I know that I don't know everything there is to know about refrigeration and I have lots to learn. But I guess my google-fu is weak. I've been searching for answers on this topic for approx. 48 hours now and have yielded some ... less than satisfactory results. Any inputs would be appreciated and I can sketch out what I'm envisioning if anyone is having a hard time seeing what I'm talking about.
Here's to hoping I don't get flamed.
*edit* If this is in the wrong forum, please move me. I just figured that since I'm wanting to build this myself, it should be in the DIY forum.