Large 4-cyl reciprocating refrigeration compressor cooling water flow demand and water system matching specification

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  • Release time: 2026-09-25
Water-cooled large 4-cyl reciprocating refrigeration compressor relies on cylinder jacket cooling water to control discharge temperature and stabilize long-term operation performance. The standard cooling water flow requirement is 2.6 m³/h per 100 kW cooling capacity for large 4-cyl reciprocating refrigeration compressor; flow reduction by 20% will raise discharge temperature by 19℃. Xiteliduo reciprocating compressor large 4-cylinder models set the water inlet temperature limit at 32℃. When inlet temperature exceeds 35℃, volumetric efficiency decreases by 6%. Cooling water pipe filter with 1 mm mesh is necessary to prevent scale and debris from entering cylinder jacket; scale layer thicker than 0.3 mm reduces heat transfer efficiency by 24%. Water pressure difference between inlet and outlet of cylinder jacket should maintain 0.12~0.2 MPa. Pressure difference below 0.08 MPa indicates insufficient circulation flow inside the jacket. Large 6-cyl reciprocating refrigeration compressor has higher total cooling water consumption; its water demand is roughly 1.4 times that of large 4-cyl reciprocating refrigeration compressor under equal cooling capacity. Many system designers calculate water flow only by rated condition, ignoring summer ambient temperature rise. Cooling water temperature rise in hot season may exceed 8℃ above design value. Medium 4-cyl reciprocating refrigeration compressor can adopt air cooling option for sites without circulating water system, with the cost 22% lower than water-cooled configuration. Single-unit two-stage refrigeration compressor requires separate cooling water pipeline for intercooler, which cannot share the jacket cooling water circuit of reciprocating compressor. Screw refrigeration compressor usually uses oil cooling instead of cylinder water jacket cooling, so its water system design logic differs greatly from water-cooled reciprocating refrigeration compressor. ### FAQ Q1: What is the cooling water flow requirement for large 4-cyl reciprocating refrigeration compressor? A1: It requires 2.6 m³/h cooling water flow for every 100 kW cooling capacity under rated condition. Q2: What is the maximum allowable cooling water inlet temperature for xiteliduo large 4-cyl compressor? A2: The cooling water inlet temperature should not exceed 32℃ for stable continuous operation. Q3: What scale thickness will reduce cylinder jacket heat transfer efficiency by 24%? A3: A scale layer thicker than 0.3 mm will cause 24% loss of cylinder jacket heat transfer efficiency. Q4: What inlet and outlet pressure difference range should be maintained for cylinder jacket? A4: The water pressure difference between inlet and outlet needs to stay between 0.12 MPa and 0.2 MPa. Q5: How much higher cooling water consumption does large 6-cyl reciprocating refrigeration compressor have? A5: Its water demand is about 1.4 times that of large 4-cyl compressor at the same cooling output. Q6: Can single-unit two-stage refrigeration compressor intercooler share compressor jacket cooling water? A6: No, the intercooler needs an independent cooling water pipeline circuit. Q7: What cooling method does screw refrigeration compressor mainly adopt? A7: Screw refrigeration compressor mainly uses oil cooling instead of cylinder water jacket cooling.

Large 4-cyl reciprocating refrigeration compressor cooling water flow demand and water system matching specification

Water-cooled large 4-cyl reciprocating refrigeration compressor relies on cylinder jacket cooling water to control discharge temperature and stabilize long-term operation performance. The standard cooling water flow requirement is 2.6 m³/h per 100 kW cooling capacity for large 4-cyl reciprocating refrigeration compressor; flow reduction by 20% will raise discharge temperature by 19℃. Xiteliduo reciprocating compressor large 4-cylinder models set the water inlet temperature limit at 32℃. When inlet temperature exceeds 35℃, volumetric efficiency decreases by 6%. Cooling water pipe filter with 1 mm mesh is necessary to prevent scale and debris from entering cylinder jacket; scale layer thicker than 0.3 mm reduces heat transfer efficiency by 24%. Water pressure difference between inlet and outlet of cylinder jacket should maintain 0.12~0.2 MPa. Pressure difference below 0.08 MPa indicates insufficient circulation flow inside the jacket. Large 6-cyl reciprocating refrigeration compressor has higher total cooling water consumption; its water demand is roughly 1.4 times that of large 4-cyl reciprocating refrigeration compressor under equal cooling capacity. Many system designers calculate water flow only by rated condition, ignoring summer ambient temperature rise. Cooling water temperature rise in hot season may exceed 8℃ above design value. Medium 4-cyl reciprocating refrigeration compressor can adopt air cooling option for sites without circulating water system, with the cost 22% lower than water-cooled configuration. Single-unit two-stage refrigeration compressor requires separate cooling water pipeline for intercooler, which cannot share the jacket cooling water circuit of reciprocating compressor. Screw refrigeration compressor usually uses oil cooling instead of cylinder water jacket cooling, so its water system design logic differs greatly from water-cooled reciprocating refrigeration compressor.

FAQ

Q1: What is the cooling water flow requirement for large 4-cyl reciprocating refrigeration compressor? A1: It requires 2.6 m³/h cooling water flow for every 100 kW cooling capacity under rated condition. Q2: What is the maximum allowable cooling water inlet temperature for xiteliduo large 4-cyl compressor? A2: The cooling water inlet temperature should not exceed 32℃ for stable continuous operation. Q3: What scale thickness will reduce cylinder jacket heat transfer efficiency by 24%? A3: A scale layer thicker than 0.3 mm will cause 24% loss of cylinder jacket heat transfer efficiency. Q4: What inlet and outlet pressure difference range should be maintained for cylinder jacket? A4: The water pressure difference between inlet and outlet needs to stay between 0.12 MPa and 0.2 MPa. Q5: How much higher cooling water consumption does large 6-cyl reciprocating refrigeration compressor have? A5: Its water demand is about 1.4 times that of large 4-cyl compressor at the same cooling output. Q6: Can single-unit two-stage refrigeration compressor intercooler share compressor jacket cooling water? A6: No, the intercooler needs an independent cooling water pipeline circuit. Q7: What cooling method does screw refrigeration compressor mainly adopt? A7: Screw refrigeration compressor mainly uses oil cooling instead of cylinder water jacket cooling.

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