Testing of heat pumps
Refrigeration Center COCH in Krakow performs certified testing of heat pumps operating in air/water, water/water, refrigerant/water, direct evaporation refrigerant/water systems. Tests are carried out to determine energy and performance characteristics for factory-made units with integral or separate condensers, factory-made units with fixed or freely adjustable capacity, stand-alone interlocked units, and two-piece and multi-piece interlocked units.
Tests of heat pumps performed at COCH are covered by the accreditation of the Polish system of testing laboratories (accreditation of the Polish Center for Accreditation No. AB 308), and the license to use the ILAC MRA international mark, of mutual recognition of test reports issued by accredited laboratories around the world.
Details of heat pump testing and certification
1. Tests are carried out to determine energy characteristics
1.1 Testing of heat pumps with electrically driven compressors for space heating according to EN 14511:
- Heating/cooling capacity,
- Electric power consumed,
- Heating efficiency ratio COP
- Cooling efficiency ratio EER
1.22 Testing of heat pumps with electrically driven compressors of the ground (direct evaporation)/water (refrigerant) type for space heating according to EN 15879-1:
- Heating/cooling capacity
- Electric power consumed,
- Heating efficiency ratio COP
- Cooling efficiency ratio EER
1.3 Testing of heat pumps with electrically driven compressors for domestic hot water preparation (according to EN 16147):
- Warm-up period,
- Determination of standby power consumption,
- Determination of useful energy,
- Determination of COP efficiency index,
- Electricity consumption,
- Determination of reference hot water temperature and maximum hot water volume.
- Determination of the seasonal heating efficiency index SCOPDHW,
- Determination of seasonal energy efficiency of space heating ηs;
A heat pump for domestic hot water preparation is, according to EN 16147, a heat pump as defined in EN 14511-1, connected to a hot water storage tank or with such a tank built in.
1.4 Testing of heat pumps with electrically driven compressors for space heating and cooling under partial load conditions and calculation of seasonal efficiency according to PN-EN 14825 and Commission Regulation (EU) No. 813/2013 of August 2, 2013, Commission Regulation (EU) No. 811/2013 of February 18, 2013, Directive 2009/125/EC of the European Parliament and of the Council
- Heating efficiency under partial load conditions
- Determination of the seasonal heating efficiency index SCOP,
- Determination of seasonal space heating energy efficiency ηs,
- Determination of seasonal cooling efficiency ratio SEER
2. Performance testing of heat pumps
in accordance with the requirements of EN 14511-4
- Testing of the range of application specified by the manufacturer
- Test when the flow of heat transfer agents is closed
- Test at total failure of the electricity supply
- Inspection of the defrosting system
- Evaluation of condensate drainage and casing sweating test
3. Leakage and strength tests of heat pump installations
- Testing according to PN-EN 378-2, PN-EN 14276-1, PN-EN 14276-2 standards
- Tests to assess compliance with the PED directive
COCH is a notified body within the scope of the PED 2014/68/EC directive. Identification number assigned to the COCH certification body by the European Commission – 1462
4. Acoustic and noise testing
5. Safety tests for the use of electrical equipment for household and similar use – heat pumps, air conditioners and dehumidifiers
These tests complement the testing of equipment such as electric heat pumps, air conditioners and dehumidifiers.
These tests focus on determining and evaluating the characteristics of the device in order to classify it as a safe device for use. This consists of tests to check the operation of the unit under controlled conditions and abnormal conditions with overloading of the compressor motor and fan, and electrical circuits. In addition, mechanical strength, resistance to high temperature, use of components, correctness of grounding connections, among others, are evaluated. The tests are performed in accordance with PN-EN 60335-2-40.
6. KEYMARK for heat pumps – HP KEYMARK
7. Other tests
The laboratory also performs other non-standard tests, for example, in thermo-climate chambers or others within the framework of available testing capabilities, and it is also possible to design and manufacture new test stands for specific tests, as agreed with the customer.
