A Simple Guide to the Refrigeration Cycle and How Air ... - ACHR …
WEBSep 15, 2020 · It takes low-pressure gas refrigerant coming into it, and turns it into high-pressure gas by the time the refrigerant leaves, increasing the chemical’s temperature as well. A refrigeration system needs to be pressurized. Take away the compressor, and the refrigerant just sits in the air conditioner without moving. The Condenser.
An HVAC Technician’s Guide To R-32 | 2020-11-12 | ACHR News
WEBNovember 12, 2020. Change is coming once again to the HVACR industry, as there is a growing movement to transition from R-410A to lower-GWP refrigerants. California, for example, is proposing a GWP limit of 750 for all new stationary air conditioning systems (residential and commercial) in California starting Jan. 1, 2023, and other states are ...
Understanding Vacuum Level Measurements | ACHR News
WEBJul 19, 2022 · Since a vacuum level of 25,400 microns equals 28.92 inches Hg vacuum, very low vacuum levels can be easily read. A vacuum level of 500 microns would represent a system under a very deep vacuum. Regardless of the measurement used, technicians should pull the necessary vacuum to ensure the system they are working on is properly …
R-454B Emerges As A Replacement For R-410A - ACHR News
WEBAug 2, 2020 · PRIMARY SOLUTION: Carrier recently announced that it had chosen R-454B as its primary lower-GWP solution to replace R-410A — such as the unit shown here — in all of its ducted residential and light commercial packaged solutions sold in North America. August 2, 2020. The big debate in the HVACR industry right now is which refrigerant (s ...
A guide to understanding filter-drier functions and types
WEBMay 2, 2000 · This article offers acr technicians a description of the basic function of these devices and differences between the various types currently available. A filter-drier in a refrigeration or air conditioning system has two essential functions: one, to adsorb system contaminants, such as water, which can create acids, and two, to provide physical ...
Refrigerant Pressures, States, And Conditions | ACHR News
WEBApr 28, 2005 · Refrigerant Pressures, States, And Conditions. April 28, 2005. This is the first in a series of columns addressing advanced basics in the understanding of the refrigeration cycle. All of these columns deal with refrigerant pressures, states, and conditions as applied to a refrigeration system with a refrigerant like R-134a that is not a …
A Closer Look at Several Alternatives to R-22 - ACHR News
WEBJun 29, 2020 · By Joanna R. Turpin. NON-FLOODED USE: ComStar’s RS-44b can be used to replace R-22 in all non-flooded, high-, medium-, and low-temperature systems down to minus 20°F evaporating temperature. June 29, 2020. While it became illegal to produce or import virgin R-22 into the U.S. as of Jan. 1, 2020, it didn’t mean that the refrigerant …
The Essentials Of Working With R-410A | ACHR News
WEBNovember 2, 2003. Several major manufacturers are producing comfort air conditioning equipment using refrigerant 410A. The trend towards the use of R-410A continues to grow and there is a demand for technicians who are comfortable working with this higher-pressure replacement for refrigerant 22. Due to the differences between R-22 and the …
What Causes High Compressor Discharge Temperature? | ACHR …
WEBFeb 6, 2006 · This discharge temperature should never exceed 225°F. Carbonization and oil breakdown can occur if compressor discharge temperatures exceed 225°. The three causes for high discharge temperatures are: High condensing temperature. Low evaporator pressures and temperatures. High compression ratios.
All You Need To Know About HVAC Capillary Tubes, Part 1
WEBDec 9, 2019 · Capillary tube metering devices are found mainly in domestic and small commercial applications that experience somewhat constant heat loads on their evaporators. These systems also have small refrigerant flow rates and usually employ fully hermetic compressors. Manufacturers use capillary tubes due to their simplicity and low …
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