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Home » metering devices

Articles Tagged with ''metering devices''

TXV.

Reasons Why TXVs Overfeed Refrigerant

Proper TXV settings will keep refrigeration and air conditioning systems operating efficiently
John Tomczyk
July 27, 2022
Making sure the TXV is metering the right amount of refrigerant into the evaporator and is not overfeeding the coil is one way technicians can help their customers’ refrigeration and air conditioning systems operate safely and more efficiently.
Read More
Refrigerant charge.

Determining the Correct Refrigerant Charge

Several methods can be used to ensure the right amount is used in a refrigeration system
Joe Marchese
May 24, 2022
When adding refrigerant to a refrigeration system, there are several different methods a technician can use to determine the correct amount needed.
Read More
Static Pressure Measurement Device.

Time to Consider Pascals for Static Pressure Measurements

David Richardson
David Richardson
April 15, 2022
Is it time for our industry to consider using pascals for static pressure measurements? What would the transition from inches of water column to pascals look like and how hard would it be?
Read More
An internal cut-away of the low ambient control valve.

Cold Weather Control of Condensing Units

Frigid conditions require low ambient controls to ensure optimal performance
John Tomczyk
November 21, 2020
Condensing units that are exposed to low ambient conditions must have some sort of low ambient control installed on them.
Read More
The Professor John Tomczyk

Overcharge Symptoms Differ Due To Metering Devices

TXVs, AXVs, and capillary tube systems will have varying evaporator pressures
John Tomczyk
September 23, 2020
There are varying types of symptoms that can occur when a refrigeration system has an overcharge of refrigerant.
Read More
HVAC Capillarry Tubes

All You Need to Know About HVAC Capillary Tubes, Part 2

Servicing these simple metering devices takes special skill
John Tomczyk
January 13, 2020
In this article, we will look take a closer look at capillary tube systems, as well as how to properly clean them.
Read More
HVAC Capillarry Tubes

All You Need To Know About HVAC Capillary Tubes, Part 1

Sizing these cost-effective metering devices is crucial to system performance
John Tomczyk
December 9, 2019
Most systems employing capillary tubes as metering devices do not require high-side receivers, which add to cost savings.
Read More
Heat Metering Makes Centralized Hydronic Heat a Viable Option - The ACHR News

Heat Metering Makes Centralized Hydronic Heat a Viable Option

Technology, standards, and training usher in hydronic “golden era”
Angela Harris - The ACHR News
Angela D. Harris
July 15, 2019
Decreased equipment requirements and the increased potential for lesser maintenance costs have contractors looking into hydronic heat metering.
Read More
meter-achr-news

Flir Systems Inc.: Environment Meter

April 29, 2019
Based on hygrometer technology, this product identifies deviations from ambient rh levels, which can cause static hazards at manufacturing sites and discomfort in homes and offices.
Read More

ABCs of Externally Equalized TXVs

Devices can improve evaporator efficiency in refrigeration and air conditioning systems
John Tomczyk
January 14, 2019
The TXV also simultaneously controls a set amount of evaporator superheat while, under these same conditions, assuming the range and capacity of the valve is not exceeded.
Read More
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