1. Product Overview
MRAC065ALC is a compact cooling-only single air cooled chiller under Monchrui MRAC-LC series with nominal cooling capacity 65kW. Designed exclusively for small-scale 24/7 constant cooling demand, it has no heating circuit and requires no supporting cooling tower or cooling water pump, which greatly reduces investment on water pool and circulating pipeline civil engineering.
With slim and compact cabinet for small footprint, the unit can operate standalone or be paralleled with identical units for capacity expansion. Equipped with imported 500-stage PMV electronic expansion valve & PID dynamic temperature control system plus built-in intelligent low-temperature defrost logic for stable outdoor operation in cold winter. Hydraulic circuit supports ethylene glycol anti-freeze solution with official concentration-freezing point table, enabling 24-hour stable constant cooling for small server rooms, precision labs and miniature automatic production lines in northern cold regions.
2. MRAC065ALC Single Unit Rated Performance Table
Item | Parameter |
|---|---|
Model | MRAC065ALC |
Nominal Cooling Capacity | 65kW |
Rated Input Power | 20.3kW |
Unit Type | Cooling-only all-year air cooled module |
Throttle Component | Imported 500-stage PMV electronic expansion valve |
Temperature Control | PID dynamic precise regulation |
Supporting Hydraulic System | Ethylene glycol low-temperature anti-freeze circuit |
3. Ethylene Glycol Concentration-Freezing Point-Density Table (MRAC065ALC Standard)
Ethylene glycol aqueous solution oxidizes and acidifies during long-term operation, corroding carbon steel, stainless steel and copper pipes. Corrosion & scale inhibitor additive must be mixed. Initial mixing concentration shall be 5% higher than system minimum anti-freeze temperature. Glycol depletes gradually, quarterly concentration test & replenishment is required.
Freezing Point(℃) | Glycol Concentration(%) | Density @20℃(g/cm³) | Freezing Point(℃) | Glycol Concentration(%) | Density @20℃(g/cm³) |
|---|---|---|---|---|---|
-10 | 25.4 | 1.034 | -48 | 56.5 | 1.077 |
-14 | 29.6 | 1.041 | -56 | 61.2 | 1.081 |
-20 | 36.4 | 1.0506 | -68 | 66.3 | 1.087 |
-26 | 42.2 | 1.059 | -40 | 85.4 | 1.104 |
-35 | 49.6 | 1.068 | -20 | 97.5 | 1.112 |
-44 | 54.6 | 1.074 | -13.1 | 100 | 1.113 |
4. Four Core Advantages of MRAC065ALC
4.1 Standard 65kW Small Cooling Capacity For Medium & Mini Projects
65kW cooling output matches mini IDC server rooms, 2~5 sets precision testing equipment and small injection molding/laser production lines. Compact body fits regular equipment rooms, rooftops and building corridors. If cooling demand grows later, additional identical MRAC065ALC units can be paralleled without full machine replacement.
4.2 PID + 500-Stage Valve, ±0.5℃ High Precision Constant Temp
Imported 500-level electronic pulse throttle valve with real-time PID algorithm dynamically adjusts refrigerant flow according to equipment load fluctuation. Ultra-small chilled water temperature fluctuation meets strict cooling requirements for biological reagents, optical chips and testing instruments, avoiding equipment failure and test data deviation caused by unstable water temperature.
4.3 Intelligent Low-Temp Defrost, Non-Stop Cooling In Sub-Zero Ambient
Multi-dimensional intelligent defrost logic judges defrost cycle by ambient temperature, system pressure and running time to prevent heat exchanger frosting and high-pressure shutdown. The unit runs 24h continuously to produce chilled water even in outdoor uninsulated equipment rooms in northern winter.
4.4 Compact Tower-Free Design, Glycol Anti-Freeze For Cold Northern Areas
No cooling tower needed, eliminating investment on water tank, circulation pump and complex outdoor pipelines. Standard glycol-compatible water circuit with complete official mixing rules thoroughly solves pipe cracking risk in winter. Mature vibration isolation structure lowers installation cost and reduces routine maintenance workload.
5. Mandatory Installation Specifications For MRAC065ALC
(1) Vibration Damping & Pipe Mandatory Rules
Concrete foundation plus rubber dampers must be laid under the unit; direct floor placement forbidden. Air dampers, external electrical boxes and water pipes cannot be rigidly connected to ground, which will invalidate damping and sharply raise running noise.
(2) Noise Zone Layout Rules
Install far from residential buildings, hotel guest rooms, meeting rooms and offices. Rooftop units shall not be placed close to building edges to avoid downward noise transmission & complaints. Extra sound insulation enclosures for pedestrian-heavy public zones.
(3) Airflow & Corridor Installation Standard
Reserve enough ventilation space at fan outlet; walls & equipment shall not block hot air recirculation. For narrow corridor installation, fan heat dissipation side faces windows to guarantee smooth air convection.
(4) Maintenance Access Reservation
Standard service passage reserved around the unit for regular heat exchanger cleaning, filter replacement, electronic valve & compressor maintenance.
6. Application Scenarios For MRAC065ALC
Mini IDC Server Rooms: Year-round heat dissipation for medium & small server clusters without cooling tower;
Precision Testing Labs: Low-temperature constant cooling for miniature electronic, biological & optical experimental equipment;
Small Industrial Production Lines: Water cooling system for tiny injection molding, laser engraving & machine tools;
Northern Mini Equipment Rooms: Stable operation under sub-zero winter with glycol anti-freeze to prevent pipe cracking;
Small Pharmaceutical & Chemical Devices: Continuous temperature control for miniature reaction kettles & testing instruments.
7. Quality Control & Supporting Services
Every MRAC065ALC unit passes 100% full inspection of hydraulic, electrical and refrigeration systems before delivery, with standard water filter & water differential pressure switch equipped. Complete dimension drawings, water circuit schematics and glycol anti-freeze construction guides are provided. Professional HVAC FAE engineers deliver one-stop technical service including pre-project cooling load calculation, machine room layout, noise reduction design and on-site commissioning.
The company reserves the right to adjust product specifications, appearance and functional optimization without prior notice. Customers may request the latest full datasheet before order confirmation.
