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Showing results for tags 'p-h diagram'.
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Introduction to using the Pressure-Enthalpy Chart to diagnose refrigerator sealed system problems
Samurai Appliance Repair Man posted a file in Appliance Repair Manual Pot Luck Supper
Version 1.0.0
42 downloads
This is an excellent short (14 pages) technical article written by Dave Demma, a Senior Application Engineer with Sporlan. He explains how to use the pressure-enthalpy (P-H) chart to understand how a refrigeration cycle works and how to apply this to various troubleshooting scenarios. Don't let the "engineer" scare you-- the math is minimal and simple, nothing more complicated than arithmetic: adding, subtracting, multiplying, and dividing. The explanations are clear, plain and non-geeky and he uses lots of illustrations. It really is a masterpiece of teaching and making something complex understandable by anyone, regardless of your technical background. If you understand or are at least familiar with the P-H chart (which we covered in detail in the Refrigerator Sealed System Thermodynamics webinar series), you'll get a much better understanding for saturation, superheat, subcooling, and system pressures. This copy has my highlights of key points. -
New Appliance Service Manual added: Introduction to using the Pressure-Enthalpy Chart to diagnose refrigerator sealed system problems
Samurai Appliance Repair Man posted a topic in Appliance Service Manual Requests Forum
Introduction to using the Pressure-Enthalpy Chart to diagnose refrigerator sealed system problems View File This is an excellent short (14 pages) technical article written by Dave Demma, a Senior Application Engineer with Sporlan. He explains how to use the pressure-enthalpy (P-H) chart to understand how a refrigeration cycle works and how to apply this to various troubleshooting scenarios. Don't let the "engineer" scare you-- the math is minimal and simple, nothing more complicated than arithmetic: adding, subtracting, multiplying, and dividing. The explanations are clear, plain and non-geeky and he uses lots of illustrations. It really is a masterpiece of teaching and making something complex understandable by anyone, regardless of your technical background. If you understand or are at least familiar with the P-H chart (which we covered in detail in the Refrigerator Sealed System Thermodynamics webinar series), you'll get a much better understanding for saturation, superheat, subcooling, and system pressures. This copy has my highlights of key points. Submitter Samurai Appliance Repair Man Submitted 01/30/2018 Category Appliance Repair Manual Pot Luck Supper -
[Webinar] Basic Refrigeration Sealed System Thermodynamics
Samurai Appliance Repair Man posted an event in Tech Training
untilWho: Professional Appliantologists, Senior Appliantology Fellows, and Legacy Tech members at Appliantology Master Samurai Tech Academy students enrolled in the Refrigerator Repair course Mr. Appliance® Academy students enrolled in Bundle 1 What: Basic Refrigeration System Thermodynamics We're venturing down the rabbit hole- this webinar is the first part in a multi-part webinar series on understanding how the sealed system in a refrigerator works. In this first session, we're going to be laying foundational concepts that will be used in subsequent webinars. So if you miss this one, you'll be lost in the later sessions. In this first part, we're going to discuss and understand: Pressure and vacuum units of measurement Energy and work: BTU vs. BTUH Latent and sensible heats Saturation temperature Boiling point and phase change Enthalpy The Pressure-Enthalpy (P-H) diagram Using the P-H diagram to analyze an ideal refrigeration cycle Refrigerant pressure-temperature saturation tables Superheat and subcooling We'll also look at pressures, superheats, and subcooling at various points around a real-world R134a refrigeration system and plot these on a P-H diagram. You'll need a set of R134a P-T tables or the Danfoss app. When: Monday, October 2, 2017, at 7PM Eastern Time SHARP (adjust your time zone accordingly). Where: All of our web meetings are powered by Join.me. For the connection details, see below. Master Samurai Tech Academy Students: RSVP here. Mr. Appliance® Academy Bundle 1 Students: RSVP here. Professional Appliantologists, Senior Appliantology Fellows, and Legacy Techs: fill out the form below to request connection details:<a data-cke-saved-href="https://mastersamuraitech.wufoo.com/forms/mur05y20li0deq/" href="https://mastersamuraitech.wufoo.com/forms/mur05y20li0deq/">Fill out my Wufoo form!</a> How: Here are three tips to ensure that the webinars are a smooth, cool experience for you: Arrive early to make sure your connection is working! Also, if you show up late for the webinar, you'll be lost. Enter your name at the "knock to enter" window on the meeting page- if you leave it blank, you won't be able to enter. Watch this ultra-short video on how to use your Join.me control console.