1. Product Overview
MRAC-LC series is cooling-only air cooled modular chiller independently developed by Shenzhen Monchrui Industrial Development Co., Ltd., specially designed for 24/7 non-stop constant cooling demands. No heating circuit and no supporting cooling tower / cooling water pump required, greatly cutting civil construction and water circulation investment.
Two standard single models available: MRAC065ALC (65kW) and MRAC130ALC (130kW). Compact cabinet saves installation space, multiple units can be combined in parallel for capacity expansion. Equipped with imported 500-stage PMV electronic expansion valve & PID dynamic temperature control system plus intelligent defrost logic for stable operation under low ambient temperature. Hydraulic system supports ethylene glycol anti-freeze solution with official concentration-freezing point table, suitable for northern outdoor equipment rooms and industrial production lines with year-round cooling demand. Widely used in IDC server rooms, precision testing labs, chemical & pharmaceutical workshops, laser & injection molding automatic equipment constant cooling.
2. Single Unit Basic Performance Table
Single Model | Nominal Cooling Capacity(kW) | Rated Input Power(kW) |
|---|---|---|
MRAC065ALC | 65 | 20.3 |
MRAC130ALC | 130 | 41 |
3. Ethylene Glycol Concentration-Freezing Point-Density Table
Ethylene glycol aqueous solution oxidizes and acidifies during long-term operation, corroding carbon steel, stainless steel and copper pipelines. Corrosion & scale inhibitor additive is mandatory. Initial mixing concentration shall be 5% higher than system minimum anti-freeze temperature. Glycol volatilizes and depletes regularly, concentration inspection & replenishment every quarter 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 Product Advantages
4.1 24/7 Non-Stop Cooling, Intelligent Defrost For Low Temperature
Only refrigeration cycle configured, all power output for chilled water without energy diversion from heating loop. Built-in intelligent defrost logic judges defrost cycle by ambient humidity and system pressure, avoiding high-pressure shutdown caused by heat exchanger frosting in cold winter. Wide adjustable chilled water temperature range meets low-temperature constant cooling for chips, reagents and precision processing equipment.
4.2 500-Stage PMV Valve & PID Precise Temperature Control
Imported 500-level electronic pulse throttle valve with real-time PID algorithm dynamically adjusts refrigerant flow according to cooling load fluctuation. Ultra-small water temperature fluctuation stably meets ±0.5℃ high-precision constant temperature requirement for labs and IDCs, preventing equipment failure and defective production caused by unstable water temperature.
4.3 Compact Modular Layout, Phased Expansion & Tower-Free Design
Slim single unit with small footprint; multiple units run under group control. Clients install basic capacity first and expand modules later to lower upfront cost. Faulty module will be isolated without full-system cooling interruption. No cooling tower, water pool or auxiliary pump required, cutting construction and maintenance cost significantly.
4.4 Complete Standardized Ethylene Glycol Anti-Freeze Solution For Northern Outdoor Use
Full glycol operation specification and freezing point chart with construction guidance provided:
Antifreeze must be mixed with composite additive for corrosion resistance, scale inhibition and foam suppression to avoid pipeline perforation & leakage;
Initial concentration = minimum system anti-freeze temperature + 5% safety margin;
Inspect glycol concentration quarterly and replenish in time if depleted;
Eliminate pipe cracking risk for outdoor units in northern sub-zero winter, realize stable all-year cooling.
5. Mandatory Standard Installation Specifications
(1) Vibration Damping & Pipe Connection Rules
Concrete foundation plus rubber dampers must be laid under every unit; direct floor placement is forbidden.
Air dampers, external electrical boxes and water pipes shall not be rigidly fixed to ground, which will invalidate damping and amplify running noise.
(2) Noise Area Layout Restrictions
Install units far from noise-sensitive zones including residential buildings, hotel guest rooms, meeting rooms and offices.
Rooftop units cannot be placed close to building edges to avoid noise transmission downstairs and complaints.
Extra sound insulation enclosures required for pedestrian-heavy public zones such as pedestrian streets and industrial parks.
(3) Airflow & Corridor Installation Requirements
Reserve sufficient ventilation space at fan outlet; walls, pipes and equipment shall not block hot air exhaust to prevent high-pressure protection shutdown from hot air recirculation.
For narrow corridor installation, place fan heat dissipation side towards windows and walls to guarantee smooth air circulation.
(4) Maintenance Access Reservation
Standard service passage reserved around each unit for regular heat exchanger cleaning, filter replacement, electronic valve and compressor maintenance.
6. Main Application Scenarios
IDC Data Center Server Rooms: Year-round heat dissipation for servers & switches without cooling tower;
Precision R&D Labs: Low-temperature constant cooling for electronic testing, biological reagents and optical instruments;
Chemical & Pharmaceutical Workshops: 24-hour temperature control for reaction kettles and fermentation equipment;
Industrial Automatic Production Lines: Water cooling system for injection molding, laser cutting and machine tools;
Northern Outdoor Equipment Rooms: Stable cooling under sub-zero winter with glycol anti-freeze system to prevent pipe cracking.
7. Quality Control & Supporting Services
All MRAC-LC units pass full hydraulic, electrical and refrigeration performance inspection before delivery, standard water filter & water differential pressure switch equipped as factory default. 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 planning, 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.
