What is the maximum discharge line temperature for Copeland compressors?

What is the discharge temperature limit of Copeland® compressors? Typically the maximum DLT is 225 ˚F. However, this temperature can vary depending on specific applications.

What is the maximum compressor discharge temperature?

The limit to any compressor discharge temperature is 225 degrees F. If the discharge temperature gets higher than 225 degrees, the system may start to fail from worn rings, acid formations, and oil breakdown.

What is Copeland's maximum discharge line temperature 6 from the compressor?

Copeland 17-1260

Undoubtedly with operating wear, the temperature conditions become even more severe. Table 1 data is calculated based on laboratory testing, but individual installations vary, and the goal should be to maintain temperatures on the discharge line six inches from the compressor at 225°F or less.

How hot should discharge line be?

It is desirable to limit discharge temperatures to below 250°F to 275°F (121°C to 135°C) to assure adequate packing life and to avoid lube oil degradation. At temperatures above 300°F (149°C), eventual lube oil degradation is likely, and if oxygen is present, ignition is possible.

What is discharge temperature of air compressor?

For the health of the air compressor, the temperature at the discharge line should never exceed 225 degrees Fahrenheit. Anything hotter at the discharge line would put the discharge port dangerously above the 300 degrees Fahrenheit level.

Refrigerant Compression and Temperature

What is high discharge temperature?

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. This causes rings, pistons and cylinders to wear resulting in blow by, leaking valves, and metal debris in the oil.

How do you calculate the discharge temperature of a compressor?

What can cause high condensing temperatures?

What causes low discharge line temperature?

There is also low Discharge Superheat to consider. The most common cause of low Discharge Superheat is flooding to the compressor. That condition will more than likely be associated with an Electronic Expansion Valve over feeding the evaporator. It could also point to an Accurator or check valve issue.

Where is the discharge temperature located?

The compressor's discharge line temperature can be measured by placing an insulated thermistor on the discharge line about 3 inches from the compressor. This discharge line temperature is a measure of the superheated refrigerant's vapor temperature.

What is discharge temperature sensor?

The Discharge Air Temperature sensor is used to measure the temperature of the air that is emitted from the air ducts.

What is discharge thermistor?

The discharge gas thermistor is wired in series with the motor thermistor chain. On compressors ZHW08K1P and ZHW16K1P, a temperature sensor is located internally in the discharge port of the fixed scroll. Excessive discharge gas temperature will cause the drive to trip the compressor.

What is a normal temperature for a discharge gas line on a reciprocating compressor?

In standard practice, it is advisable to never exceed operating discharge temperatures of 176.7°C (350°F), however, many compressor packages will consist of components limiting discharge temperature to no more than 148.9°C (300°F).

What is a normal discharge pressure?

Since at the discharge of the refrigeration compressor the condenser is located, normal discharge pressure can also be defined as the pressure at which the refrigerant condenses with specified amount of sub-cooling at the available cooling utility.

What is the max permissible compressor discharge temperature as per API 618?

In hydrogen rich applications, API 618 (1995) limits discharge temperatures to 275F (135C). For natural gas service the maximum discharge temperature limit is 350F (175C); although in most cases a more practical limit is 300F (149C). Air compressors may run at discharge temperatures in excess of 400F (204C).

How do you fix high temperature discharge?

Discharge temperature is greatly affected by the compression ratio, the larger the compression ratio, the higher the discharge temperature. Reducing the compression ratio can significantly reduce the discharge temperature, including increasing the suction pressure and reducing the discharge pressure.

What would happen to the discharge line temperature with a decrease in suction line temperature?

What would happen to the discharge line temperature with a decrease in suction line temperature? It's possible to cause less of a discharge temp increase if the superheat is low, but if it's low due to low charge, restriction or underfeeding it can cause more of a discharge temp increase.

What is compressor discharge pressure?

Discharge pressure (also called high side pressure or head pressure) is the pressure generated on the output side of a gas compressor in a refrigeration or air conditioning system.

How do you check condensing temperature?

Condensation temperature = cooling water outlet temperature + 5 °C Air Cooling : Evaporation temperature = cooling water outlet temperature -5 ~ 10 °C, Condensation temperature = ambient temperature + 10 ~ 15 °C.

Why is my discharge pressure so high?

One common cause of high discharge pressure is the cooling medium (air or water) flowing across the condenser: either there is not enough or the temperature of the cooling medium is too high. This is normally easy to identify with a simple visual inspection of the condenser.

How do you calculate the discharge pressure of a compressor?

Compression process. Compression ratio (R) – is the pressure ratio at discharge to suction pressure: R = Pd/Ps (where Pd and Ps are absolute). One stage compressor has only one R value.

What is the final suction temperature of refrigerant?

A refrigeration evaporator is operating with R-22 refrigerant at 69 PSIG suction pressure; its saturation temperature is 40°F. This is the temperature at which the refrigerant evaporates from a liquid into vapor.

At what temperature does R134a condense?

For a simple circuit, using the working fluid Refrigerant R134a, evaporating at −5°C and condensing at 35°C, the pressures and enthalpies will be as shown in Fig. 2.3: Enthalpy of fluid entering evaporator =249.7 kJ/kg. Enthalpy of saturated vapour leaving evaporator =395.6 kJ/kg.

What is the temperature of a compressor?

Optimal Temperature for Air Compressor Mechanical Performance. The ideal operating temperature for an air compressor is between 50 and 85-degrees Fahrenheit. Within this range, mechanical components are not at risk of freezing or overheating due to ambient conditions.

Is temperature constant in a condenser?

Temperature profile inside the condenser

The temperature of the refrigerant decreases during the desuperheating and sub-cooling processes, but remains constant during the condensing process (see Figure 7.3).