Testing Capabilities
At KRN, we operate a fully equipped, state-of-the-art Quality & Reliability Laboratory designed to ensure consistent performance, durability, safety, and compliance with global standards. Our advanced testing infrastructure supports end-to-end validation across material, mechanical, thermal, dimensional, corrosion-resistance, cleanliness, and surface-coating performance parameters.
Every component is evaluated under controlled and traceable conditions to ensure it meets stringent customer expectations and industry specifications such as ASTM, ISO, BIS, JIS, and various OEM standards.
Psychrometric Testing
The Multi Chamber Test Facility is capable of testing HVAC systems under extreme indoor (5°C to +50°C) and outdoor (-20°C to +60°C) conditions with humidity up to 95%. It supports testing up to 55 TR for VRF and chillers, complies with IS/ISO/AHRI/EN/GB/SASO standards, and covers a wide range of domestic and commercial air-conditioning products.
| Multi Chamber Test Facility - Capabilities | |
|---|---|
| Temperature - Indoor Room | 5 to +50 °C |
| Temperature - Outdoor Room | -20 to +60 °C |
| RH % | 30 to 95 % |
| Air Flow range (CFM) | 150 to 16000 |
| Test Capacity - Lab A (Cooling & Heating) | 0.5 to 12 TR |
| Test Capacity - Lab B (Cooling & Heating) | 5 to 40 TR |
| Multi Chamber - Combined Lab A & B |
VRF - 55 TR Chiller 55 TR (Air Cooled) |
| Test Standards | All applicable - IS / ISO / AHRI / EN / GB / SASO |
| Refrigerants | R 32, R 454B, R 410 & R 290 |
| Voltage | 30 to 600 Volts |
| Frequency | 10 to 100 HZ |
| Products |
Coils/fan coils Domestic Air conditioners - Window, Wall mounted, Cassette, Floor standing, Console, High Static Commercial Air Conditioners: Ducted, Packages, Roof top units, Inverter AC, AHU, Chillers Heat pumps, Domestic air coolers, Precision air conditioners Bus, Truck and Train AC |
Helium Leak Test System
(Coarse & Fine Leak Detection)
High-precision helium-based leak detection system with both sniffer and vacuum chamber testing modes.
Detects coarse leaks and fine leaks with accuracy of 1 gram/year with high repeatability.
Ensures airtightness, refrigerant retention, and long-term refrigeration system reliability.
Supports custom leak thresholds as per OEM specifications.
Contamination Testing Setup
Used for evaluation of
o Solid / insoluble particles
o Oil / soluble contamination
o Oil / soluble contamination
Ensures compliance with international cleanliness standards for refrigeration and air-conditioning components.
Helps prevent
o Blockages in capillaries and expansion devices
o Compressor failures due to wear or lubrication issues
o Reduction of refrigerant/oil performance due to contamination
o Compressor failures due to wear or lubrication issues
o Reduction of refrigerant/oil performance due to contamination
Salt Spray Test Chamber
Accelerated corrosion testing compliant with ASTM B117, ISO 9227, and JIS Z 2371 standards.
Used to evaluate:
o Base material corrosion behavior
o Coating/paint system performance
o Long-term surface finish durability
o Protection levels in harsh environments
o Coating/paint system performance
o Long-term surface finish durability
o Protection levels in harsh environments
Essential for:
o Powder-coated components
o Painted & plated parts
o Aluminum & galvanized components
o Painted & plated parts
o Aluminum & galvanized components
Burst Testing Setup
Determines the maximum pressure capacity, structural robustness, and safety limit of components.
Applicable for:
o Heat exchangers
o Finned tubes
o WOT condensers
o Roll-bond evaporators
o Frost-free evaporators
o Other refrigeration system components
o Finned tubes
o WOT condensers
o Roll-bond evaporators
o Frost-free evaporators
o Other refrigeration system components
Helps validate:
o Safety thresholds
o Design structural margins
o Compliance with global level standards and OEM requirements
o Design structural margins
o Compliance with global level standards and OEM requirements
Pressure Cycle Test Setup
Automated system for cyclic pressure loading to simulate real-world pressure fluctuations.
Used for:
o Fatigue life assessment
o Joint integrity verification
o Brazed & welded joint durability
o Joint integrity verification
o Brazed & welded joint durability
Capabilities include:
o Adjustable peak pressures
o Variable cycle counts
o Programmable waveform profiles
o Variable cycle counts
o Programmable waveform profiles
Ensures components meet long-term reliability and endurance standards.
Powder Coating Testing Setup
Complete coating performance verification with:
Cross-hatch adhesion test – checks coating bond integrity
Impact resistance test – evaluates mechanical shock resistance
Conical mandrel test – tests flexibility & crack resistance
Film thickness measurement – ensures uniform coating deposition
Gloss & visual appearance evaluation (optional)
Ensures durable, corrosion-resistant, and defect-free coatings that meet decorative and functional requirements.
Ensures durable, corrosion-resistant, and defect-free coatings that meet decorative and functional requirements.
VMS (Video Measuring System)
High-accuracy, non-contact optical measuring system used for precision dimensional analysis.
Specifically used for: Finned / technical copper tube profiles & Critical tolerance verification
Capabilities:
o 2D measurement
o High magnification for micro-features
o Automated measurement programs
o High magnification for micro-features
o Automated measurement programs
Guarantees compliance with tight dimensional tolerances required for heat exchanger manufacturing.
Air Pressure & Oil Pressure Drop Testing Setup
Provides precise measurement of air-side and oil-side pressure drop for:
o Bar & plate heat exchangers
o Oil coolers
o Multi-channel evaporators & condensers
o Oil coolers
o Multi-channel evaporators & condensers
Used to verify:
o Internal channel flow behavior
o Hydraulic/air-side resistance characteristics
o Thermal performance prediction accuracy
o Hydraulic/air-side resistance characteristics
o Thermal performance prediction accuracy
Ensures optimum heat transfer performance and design conformity before approval.
Eddy Current Test Setup
A non-destructive testing (NDT) system used for:
o Crack detection in aluminum tubes
o Inspection of finned & technical copper tubes
o Identification of surface/sub-surface defects
o Inspection of finned & technical copper tubes
o Identification of surface/sub-surface defects
Ideal for high-speed, high-volume inspection.