HVAC & Refrigeration Blog

2019-10-22

CONTAMINATION PROBLEMS OF THE REFRIGERATION CIRCUIT: HUMIDITY

Humidity is one of the main contaminants that are generally found in a refrigeration circuit.

Read Article

2019-10-03

Causes of Excessive Heating of Refrigeration Compressors

The main causes of excessive heating of a compressor can be the following: a very high compression ratio (low suction pressure and high discharge pressure), a low refrigerant charge, an operation below the permitted capacity reduction limits.

Read Article

2019-09-04

Excessive Heating of Refrigeration Compressors

Excessive heating of the compressor leads to a decrease in the viscosity of the oil and one

Read Article

2019-08-01

Lowering of the Oil Levels in Refrigeration Compressors

Lowering the oil level in the cup of a compressor causes a lack of lubrication and of cooling, which results in an abnormal increase in operating temperature, in the seizure of bearings and in the connecting rod block

Read Article

2019-07-09

Cause of Oil Dilution in Refrigeration Compressors

The migration of the refrigerant into a non-functioning refrigeration system is one of the main causes of oil dilution.

Read Article

2019-05-15

Lubrication Problems in Refrigeration Compressors

The most common problems regarding lubrication are: oil dilution, lowering of oil level and loss of viscosity due to excessive heating of the compressor. Oil dilution is certainly the most common problem in refrigeration systems.

Read Article

2019-04-23

Damage Analysis in Refrigeration Compressors - Part II

Let us first examine the mechanical failures caused by liquid shots. Disassembling a compressor, for example, showed that the intake valve was damaged following an attempt to compress coolant or oil, or both.

Read Article

2019-03-18

The Eco-Friendly Air Conditioner that Does Not Use Refrigerant Gases: Incoming Revolution?

A German team has developed a device that acts as an air conditioner and heat pump, thanks to a metal alloy 'equipped with memory'.<br /><br/>A group of German researchers has developed a heating and cooling system that has twice the

Read Article

2019-03-11

Damage Analysis in Refrigeration Compressors - Part I

In a refrigeration system the compressor is rarely the direct cause of mechanical accidents. When a damage of a certain amount occurs in a system equipped with reciprocating compressors, it is therefore important to know the operating conditions thor

Read Article

2018-12-28

Phase-Down in the Recovery of Refrigerant Gases: Does It Still Make Sense? Who Decides if the Results are Adequate? - Part 2

What is important to clarify, after what we’ve addressed in the previous article, is that every gas, if recycled, can not end up in equipment similar to those from which it was extracted.

Read Article

2018-12-13

Phase-Down in the Recovery of Refrigerant Gases: Recycling and Regeneration According to EN378 - Part 1

How many times have we heard that the United States innovate, China copies and the European Union regulates? A lot. How true is all this for the temperature conditioning market? Same.

Read Article

2018-11-20

Blue is Better: Not Just a Slogan for Frascold, but a Made in Italy Excellence

<b>Let's start by talking about history: what distinguishes Frascold and what contributes to its identity?</b><br /><br />We are a company with 80 years of history and from the beginning we cover the whole cold chain (including shipping), we have mor

Read Article