High discharge temperature It is specially reminded that if the operating environment temperature of the air compressor is too high, it will also cause the temperature of the equipment to increase. Keep an eye on temperature gauges to avoid internal damage. 2. This causes rings, pistons and cylinders to wear resulting in blow by, leaking valves, and metal debris in the oil. That’s because a high condensing temperature causes a high condensing pressure, due to the compressor having to work harder, thus generating more heat of compression from compressing the suction pressure. Condition. Air or non-condensables in system. We will look at each in detail. Rising discharge temperatures. Feb 10, 2020 · If the compressor’s discharge line temperature gets higher than 225°F, the system may start to fail from worn rings, acid formations, and oil breakdown. 9. Remember, if the discharge temperature is 225 degrees, the actual discharge valve will be about 75 degrees hotter. Apr 23, 2020 · In a reciprocating air compressor, for example, the air temperature will drop anywhere from 50 degrees Fahrenheit to 75 degrees Fahrenheit across the roughly six inches of travel between the discharge port and discharge line. Condenser fan out. If the discharge temperature gets higher than 225 degrees, the system may start to fail from worn rings, acid formations, and oil breakdown. Low refrigerant or poor lubrication can lead to high discharge temperatures. Feb 27, 2002 · The limit to any compressor discharge temperature is 225 degrees F. Restricted airflow across condenser. Noncondensable (air) in the system. Feb 6, 2006 · However, there are many causes for high condensing temperatures, which will also cause high discharge temperatures; high condensing temperatures cause high compressor discharge temperatures. Gas cooler coil dirty. Frequent shutdowns due to temperature limits 2 Causes for too high discharge gas temperatures To avoid the occurrence of too high discharge gas temperatures, attention must be paid to unconditional observation of the known operational limits for both the various compressors and the refrigerants used. 6. . Refrigerant dew temperature, evaporating temperature: 5 °C; condensing temperature: 50 °C; suction gas superheat: 10 K; liquid sub-cooling: 0 K; frequency: 50 Hz Table 1: ZR*KRE model overview for high-temperature applications 2. In reciprocating compressors, high discharge temperatures can cause problems with any sealing element (any non-metallic component in contact with the compressed gas), lubrication, and failure of the cylinder valve. High ambient temperature. Regularly See full list on hvacrschool. Feb 2, 2025 · 2. com Aug 31, 2017 · High discharge temperature is the result of temperatures in the compressor head and cylinders becoming so hot that the oil loses its ability to lubricate properly. Comparing calculated and actual discharge temperatures provides a means with which to determine operating deviations. Gas cooler fan rotating backwards. A high condensing temperature is one of them. Cylinder discharge temperature is one of the protection parameters recommended by API 618 since leaks in rings and valves result in recompression of gas that will raise the discharge temperature. Check temperature on the discharge pipe close to the compressor. 1. 2 Nomenclature The model designation contains the following technical information about the compressors: The blog provides an overview of compressor discharge temperatures and their impact on refrigeration systems. Electronic expansion valve (EEV) control Sep 20, 2021 · Always check the discharge temperature 6" or 150mm from the dischargeservice valve and make sure you stay below 225F/107C Semi-Hermetics. 3. Gas cooler fan inoperative. And when suction temperatures increase, so will discharge temperatures. If the table shows the condensing (saturated vapor)pressure is the same or close to the pressure you measured, then problem is high consensing temperature because the condenser is unsufficiently May 5, 2014 · Causes for high compressor discharge temperatures can be high condensing temperature, low evaporator temperatures, high compression ratios, and high compressor superheat. Refrigerant overcharge or non-condensibles. 6. High discharge temperature. Possible Cause. If temps keep climbing past normal ranges, find the cause and fix it before it leads to bigger issues. 2. Then consult tables of the properties of the refrigerant the compressor works with. Other compressors like Reciprocating Hermetic, Scrolls, Rotary, Screw willhave different values so you will need to check the manufacture manualforthose numbers. 13 Abnormal Temperatures. High Condensing Temp. Conditions That Can Cause High Discharge Pressure. If the compression ratio across a cylinder increases, its discharge temperature also increases. Oct 6, 2019 · The actual observed or calculated temperature may vary. Listed below are causes for high condensing temperatures: Dirty condenser. If the discharge temperatures consistently rise above normal operating ranges, it is essential to investigate the cause and take immediate action to address issues causing elevated discharge temperatures. Remedy/Reference Section. This requires devices such as high- and low-pressure switches. 8. If the temperature at the discharge port exceeds 300 degrees Fahrenheit, the refrigerant oil and adjacent mechanisms Apr 12, 2023 · However, a system that has a high condensing temperature will usually have a high compressor discharge temperature. Many causes can be associated with high compressor discharge temperatures. Remember, if the discharge temperature is 225°F, the actual discharge valve temperature will be about 75°F hotter, which will bring the actual compressor’s discharge valve to 300°F. Therefore, the discharge temperature should be checked for all possible working conditions, at least for the average and maximum temperature, valve temperature, packing temperature, crosshead pin / big end bearing temperature, and main bearing temperature. Section 7. The solution is to use the exhaust fan duct to discharge heat and reduce the ambient temperature. Mar 25, 2024 · Low refrigerant levels (oil free compressors) or poor lubrication (oil injected compressors) can cause high discharge temperatures. ehocix vlnteo sabeql cuozkr ize jeczdv qwfl ktlup plpmrcvj not daivdvz wpnrmx vrnyqg cudz irvn