Physics: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. Higher discharge pressure could result in increased energy consumption and due to that less efficiency.[1] High discharge pressure is generally considered a negative except for the very rare cases where it can be used to achieve a certain pressure in the system. Additionally, higher discharge pressure can damage components.[2] The discharge pressure is affected by several factors: size and speed of the condenser fan, ambient temperature,[3] condition and cleanliness of the condenser coil, and the size of the discharge line. An extremely high discharge pressure coupled with an extremely low suction pressure is an indicator of a refrigerant restriction. High discharge pressure could result in multiple types of cavitation, including suction cavitation and discharge cavitation[4] which can lead to reduced system efficiency, wear on components, increased noise and vibration and ultimately system failure.[5] You can measure the discharge pressure of the system by installing a pressure gauge on the discharge line.[6] Carefully monitoring the pressure can prevent component damage and failure.
References
- ↑ Ying, Pingting; Tang, Hesheng; Chen, Lei; Ren, Yan; Kumar, Anil (2023-01-01). "Dynamic modeling and vibration characteristics of multibody system in axial piston pump". Alexandria Engineering Journal 62: 523–540. doi:10.1016/j.aej.2022.07.046. ISSN 1110-0168. https://linkinghub.elsevier.com/retrieve/pii/S1110016822004987.
- ↑ chemicalengineeringsite (2016-10-23). "Reciprocating Compressor Trips and Safety Aspects" (in en-US). https://chemicalengineeringsite.in/reciprocating-compressor-trips-safety/.
- ↑ Administrator (2024-09-08). "Car AC Pressure Chart: R134a Low & High Side Pressures" (in en-US). https://www.electronicshub.org/ac-pressure-chart/#:~:text=High-Side%20Pressure%20(Discharge%20Pressure):%20At%20a%20temperature,might%20be%20around%20225%20to%20250%20psi..
- ↑ Klimes, Mike (2017-05-02). "Understanding and avoiding pump cavitation" (in en). https://www.piprocessinstrumentation.com/pumps-motors-drives/article/15563623/understanding-and-avoiding-pump-cavitation.
- ↑ "Using Cavitation for Refrigerant Vaporization and Pressurization in Residential HVAC Systems". https://infinityturbine.com/cavitation-compressor-pump-for-hvac-refrigeration-by-infinity-turbine.amp.html.
- ↑ "Gauge Pressure Monitoring" (in en-US). https://midwestinstrument.com/applications/gauge-pressure-monitoring/.
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