JANKA ENGINEERING s.r.o. test-room

The measurement of performance parameters of our products is an integral part of the quality management system of the manufacturing process. It is impossible to develop any quality product without this measurement. Therefore we have been testing our products since the time JANKA was established. Three small test rooms in three factories were operated in JANKA facilities in the 1980s. These small test rooms were replaced with a single large test room later on. Our test room is one of the most up-to date test rooms in Europe these days and has the capacity for testing of the parameters and values shown in the chart below. This test room is one of the key aspects why JANKA has continued as a top producer of air-handling and air–conditioning equipment.

We run these measurements in the test-room:

Fans characteristic

• Air volume / pressure characteristic
• Characteristic flow / efficiency

Sound parameters

• Sound pressure and power in discharge
• Sound pressure and power in suction
• Sound pressure and power to outside

Vibrometers

• Power of mechanical vibration of parts of machine in x, y, z axis

Recuperative exchangers characteristic

• Rotation and plate
• Heat efficiency
• Humidity / efficiency – it is accuracy of humidity
• Air penetration through leakage
• Pressure drop

Air-handling equipments pressure drop

• Pressure drop in air flow volume

Tightness of air-handling equipments

• Air ducts
• Chambers of air-handling units
• Others - filters (for example)

Thermal bridges

• On casing of air handling unit

Long term testing of new devices in concrete cell

• Extreme speed fans
• Small fans destructive tests

Limiting conditions

• Measured units are limited by test room area
• If using the test track then limit length for units
• (the size KLM25 and larger) is 3m
• Maximal electrical power of fan is 30 kilowatts
• Exhaust position of tested units is also limited

Fan characteristics

• Guarantee and operating point
• Electrical power input of devices

Sound parameters

• Sound pressure and power in discharge
• Sound pressure and power in suction
• Sound pressure and power to outside

Vibrometer

• Power of mechanical vibration of parts of machine in x, y, z axis
• Effective speed

Recuperative exchangers characteristic

• Operation point

Air-handling equipments pressure drop

• Measuring of noise level in the coach
• Pressure drop in air flow volume

Tightness of air-handling equipments

• Air ducts
• Chambers of air-handling units

Cooperation in the development new products

• Developmental tests
• Certification Measurement
• Verification of product parameters that are put into production

Factory test

• Verification of products parameters that are put into production
• If required by customer is for promotional purposes possible to take video or photo documentation of measurement

Accuracy of measurement

Quantity	Test way of measuring	Accuracy
Air flow	Screening route	1,5%
Pressure	Inverter	1,0%
Input power	Two wattmeter	1,0%
Speed	Frequency sensor	0,5%
Temperature	Resistive thermometer	1,0%
Vibration power	Vibrometer	5,0%

Standards and measuring equipment

Measured quantities	Standard	Measuring equipment
Air flow and pressure	ČSN 12 3061 ČSN EN 62056-31 ČSN ISO 5167-1	Measuring route with curtain Frequency inverter Central Ahlborn - physical quantities Orbit Merret – electrical quantities
Tightness Deflection on the skin and vibration	ČSN EN 1886	Fan with conical input nozzle frequency inverter Central Ahlborn- physical quantities
Vibration	ČSN 12 3063 ČSN 12 2011	Vibration meter Bruel and Kjaer, type 2260
Sound power in discharge	ČSN 12 3062	Measuring route with damper and curtain Frequency inverter Vibration meter Bruel and Kjaer, type 2260
Thermal bridges	ČSN EN 1886	Central Ahlborn - physical quantities Orbit Merret – electrical quantities
Watertightness	There is any exact process	Frequency inverter

Test-room

Ing. Jaroslav Karel, (+420) 251 088 743, jaroslav.karel@janka.cz