Special Conditions Application Cases
Heat source tower heating, gas cooling recovery, air separation cold energy recovery - innovative coolant application solutions and real cases in non-standard operating conditions.
• 4 Special Condition Types • 4 Special Condition Types • 5 Selection Comparisons
Innovative Coolant Applications in Non-Standard Conditions
Beyond conventional cold storage, HVAC, and industrial refrigeration, coolants play an irreplaceable role in many special operating conditions. From heat source tower heating to gas cooling recovery, from air separation cold energy recovery to boiler exhaust heat recovery, each special condition places unique demands on coolant performance.
This topic compiles 2025 special condition technical support cases, showcasing coolant application solutions and precautions in non-standard scenarios.
Special Conditions Application Scenarios
Gas/Heat Source Tower Heating
Requirement: Need to accommodate both low-temperature freeze protection and heat pump operating conditions. Analysis: Assess whether system pump configuration is suitable; increased viscosity may cause insufficient flow. Solution: Recommend replacing with LM-8 (-50℃ freezing point) and adjusting pump configuration. Key: Evaluate both low-temperature viscosity and high-temperature stability.
CO2/H2S Gas Cooling Recovery
Requirement: Gas condensation recovery processes involve freeze protection and corrosion resistance. Solution: CO2 post-compression cooling recommends LM-4. H2S requires an intermediate heat exchange medium to avoid direct contact freezing. Key: Different gases have significantly different condensation temperatures and corrosivity.
Boiler Exhaust Heat Recovery
Requirement: Evaluate economic feasibility of heat recovery. Analysis: On-site assessment of exhaust gas temperature and available heat. Conclusion: Payback period should be within 2 years; in most cases, economic requirements cannot be met. Key: Economic viability is the primary consideration.
Air Separation Cold Energy Recovery
Requirement: Cold energy from liquid nitrogen depressurization needs to be recovered. Solution: Recover cold energy through an intermediate medium. Recommend LM-8. Key: System should use stainless steel materials to handle low temperatures and potential corrosion.
Special Conditions Real Cases
Beijing Zhongran Senchuang · Beijing
Source tower heating poor performance; system uses methanol-glycol mixture with 30°C flash point
Analyzed undersized pump; flow insufficient after viscosity increase. Recommended LM-8 (-50°C freezing point) with pump adjustment
Youdao Chemical · Shandong Weifang
Customer needs coolant at -60°C with concentrated nitric acid in system
Concentrated nitric acid is strongly oxidizing; no suitable product available
Guizhou Jiangshan Crop Science · Guizhou Weng'an
LM-495 requires reserve alkalinity >12mL, pH 7.5-9.5, density 1.10-1.15
Customized parameters per customer requirements
Shanghai Nuoleng · -
LM-11D water contamination; cannot cool below -40°C; water content 104ppm
Recommended physical separation followed by molecular sieve drying
Special Conditions Selection Comparison
| Condition Type | Recommended Product | Key Considerations | Material Recommendation |
|---|---|---|---|
| Heat source tower heating | LM-8 | Low-temp freeze protection + high-temp stability | Stainless steel |
| CO2 cooling recovery | LM-4 | Condensation temperature matching | Carbon steel/stainless steel |
| H2S cooling | Intermediate heat transfer medium | Avoid direct contact freezing | Stainless steel (sealed) |
| Air separation cold recovery | LM-8 | Ultra-low temperature stability | Stainless steel |
| Exhaust heat recovery | - | Economic assessment (payback < 2 years) | - |
1.Heat source tower conditions require evaluating both low-temperature viscosity (affects pumping) and high-temperature stability (prevents decomposition). the LM-8 -50 to 120C wide range is ideal.
2.Gas cooling recovery requires special attention to matching gas condensation temperature with coolant freezing point. H2S and other special gases require intermediate heat exchange to avoid direct contact.
3.Cold energy recovery systems should use stainless steel to handle low temperatures and potential corrosion. LM-8 performs excellently in air separation cold energy recovery.
4.Heat recovery projects must undergo economic assessment first - projects with payback periods exceeding 2 years are generally not worth investing in.
Special Conditions FAQ
Cause: Need to balance low-temperature freeze protection and heat pump operation
Solution: Analyze whether system pump configuration is suitable; flow may be insufficient after viscosity increase. Recommend replacing with LM-8 (-50°C freezing point) and adjusting pump configuration
Cause: Gas condensation recovery process involves freeze protection and corrosion resistance
Solution: CO2 post-compression cooling: recommend LM-4. H2S: use intermediate heat transfer medium to avoid direct contact freezing
Cause: Need to evaluate economic feasibility of heat recovery
Solution: On-site assessment of exhaust temperature and recoverable heat. Payback period should be within 2 years. Most cases cannot meet economic requirements
Cause: Cold energy from liquid nitrogen pressure reduction needs recovery
Solution: Recover cold energy through intermediate medium. Recommend LM-8; system should use stainless steel materials
Related Topics
Full-range coolant selection strategy
Primary product for special conditions
System design essentials for special conditions
PCM applications in special conditions
Post time: Aug-27-2026