Charging Refrigeration System : Carnot Cycle Refrigerator : Beverage Refrigeration.
Charging Refrigeration System
- a cooling system for chilling or freezing (usually for preservative purposes)
- uses HFC-134A refrigerant and has a self-contained 115 volt, 60 hertz, single phase hermetically sealed condensing unit with adjustable cold pan pressure control.
- Record the cost of something as an amount payable by (someone) or on (an account)
- Demand (an amount) as a price from someone for a service rendered or goods supplied
- Accuse (someone) of something, esp. an offense under law
- (charge) to make a rush at or sudden attack upon, as in battle; "he saw Jess charging at him with a pitchfork"
- (charge) an impetuous rush toward someone or something; "the wrestler's charge carried him past his adversary"; "the battle began with a cavalry charge"
- (charge) (criminal law) a pleading describing some wrong or offense; "he was arrested on a charge of larceny"
charging refrigeration system - Basic Refrigeration
Basic Refrigeration & Charging Procedures
Refrigerant pressures, states and conditions are covered, as well as how they apply to the refrigeration system. Vapor pressures, subcooling, superheat, saturation, latent heat, and sensible heat are explained and applied to the refrigeration cycle. Basic system components, their functions and applications are included. Detailed explanations of each point in the refrigeration cycle will clarify questions the reader may have.
Definitions and system applications of subcooling and superheat are also included in this module. Condenser subcooling, total subcooling, evaporator superheat and total superheat are explained with examples as they apply to the basic refrigeration cycle. Friction and static pressure losses, with examples and applications, gives the reader a thorough understanding of how much subcooling is needed in any system.
Advanced topics such as; liquid pressure amplification, superheat suppression, floating head pressure, and refrigerant control systems are included.
This module includes a detailed explanation of refrigerant metering devices which include; thermostatic expansion valves, automatic expansion valves, and capillary tubes. Application, sizing, and troubleshooting under varying system operating conditions are explained.
System charging procedures as they apply to these various types of air conditioning and/or refrigeration systems are included. Charging charts and charging curves with examples of system applications give the reader a thorough understanding of system charging when reading this module.
Keesha coming out of the cage
Today was the day that Koji was going back to the vet to have the fecal loop done to get a fresh stool sample to test for Tritrichomonas foetus as a possible cause of his diarrhea and his habit of mostly pooing outside of the potty box. Well, he was sitting on me happy as a clam about 20 mins before we were supposed to go to the vet. WHY didn't I pick him up and put him in the cage then? He has sat in that thing for 5 hours when we went on vacation together. He hopped off me and went in to get something to eat, I get up and look at the cage sitting on the dining room table which I so carefully put there 2 nights before so he would forget about the rattle of the cage when it was actually time to put him in it. Who should be sitting in the cage all nice and cozy? Keesha! and she did NOT want to come out. So I tried to get her out and the cage rattled and Koji disappeared. I got Keesha out of the cage but Koji was nowhere to be seen. It's 10 after 3 by this stage and I HAD to leave by 3:15 to get him to the vet on time. Do I call and cancel? I did a walk around up and down the stairs and I could not see him. I had managed to get a couple of stool samples that happened over night, on the carpet upstairs and on the dining room Pergo floor, as Plan B. I had put them in the container and then in the fridge for preservation so I thought, ok I will take those samples and go anyway. I got there 5 mins late and spoke to the vet and I got all emotional as this is taking a toll on me. She said the refrigeration might have killed the possible offending party, so we decided to not test those samples and talked about possible other steps IF he does not have TF, but we both hope that he does so we know what we are dealing with and can try and treat it. Mind you we might not be able to get rid of it. Sometimes it stays in their systems all their lives, but we can give him a dose of whatever the medicine is that MIGHT get rid of it. She was kind enough to not charge me. I am going to sprinkle the medicine the other vet gave me in human sized capsules on the dry food and hope he gets some of it in his system. Keesha will too of course, so let's hope she doesn't get constipated! So IF I can catch him, we have another appointment on Wednesday night at 9pm to do the fecal loop for the fresh sample to test. I pull in my parking space and he is sitting on the kitty condo looking out the front window, I try to be mad at him for being a brat, but do you think I can? I tried to ignore him but he comes and sits on me while I am typing this blog. I WILL get him help, he shall be CURED! Some day......
A newly build -85°C chest freezer's control panel
A newly build -85°C chest freezer, here being put through its paces during its all important testing phase before near future delivery to a research facility. During one test, its set point was set to -100°C. See the freezer easily reaching -97°C in an ambient of 24°C. Preceding the test phase, the freezer’s refrigeration systems were placed under vacuum. On completion, the systems received their all-important charge of refrigerants.
charging refrigeration system
For professionals in the air-conditioning and refrigeration installation and repair trade, this book is an essential toolbox guide. Covers compressors, controls, components, motors, pipe, tube, valves and fittings, whole systems, and ozone-friendly refrigerants. Describes physics of vapor-compression and absorption cycles, and operation and installation of complete systems.
Complete coverage of tubing: choosing, bending, and installing. Full description of all popular metering devices and electrical and electronic controls, heavily illustrated.
20 pages of troubleshooting for vapor-compression and ammonia systems, metering devices, oil-control systems, for air- and water-cooled condensers, motors and pumps. Standard ACR procedures include draining and adding oil, system startup and cleanup, detecting leaks, recovering refrigerant, drying, evacuating and charging a system, and periodic maintenance.