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What is the difference between COP and SCOP?

07.05.2024 r.

What is COP? What is SCOP? These are questions that customers ask when choosing a heat pump for their building. At the JBG HT Academy, we explain the difference between COP and SCOP and which indicator to consider when purchasing a heat pump.

What is COP?

COP (Coefficient of Performance) is an indicator that determines the energy efficiency of a heat pump in heating mode. The COP value is determined as the ratio of the amount of heat delivered by the pump to the amount of electrical energy consumed by it. The higher the COP, the more efficient and cost-effective the heat pump is.

What is SCOP?

SCOP (Seasonal Coefficient of Performance) takes into account the efficiency of the heat pump over the entire heating season, i.e., under different weather conditions and temperatures. When calculating SCOP, data from various weather conditions and temperatures over the entire heating season are considered. This allows for a more accurate assessment of how the pump performs under different operating conditions.

How are COP and SCOP measured?

The COP of a heat pump is tested under controlled laboratory conditions where parameters such as external and internal temperatures can be precisely controlled. In contrast, calculating SCOP requires analyzing data collected from various weather conditions and temperatures over the entire heating season. Both of these indicators are essential in assessing the performance of a heat pump.

What to consider when buying a heat pump?

When choosing a heat pump, it is worth considering both COP and SCOP. COP allows you to assess efficiency under ideal conditions, while SCOP provides a better understanding of performance under real-world conditions, taking into account variable weather conditions. By choosing a heat pump with high COP and SCOP, you can achieve greater energy savings while also caring for the natural environment.

Heat pumps with high COP and SCOP

One of the heat pumps with high COP and SCOP parameters is the inverter heat pump JBG HT 15K (ZHHS). The COP for a temperature of 35 degrees Celsius is 5.35, while the COP is 3.19. The SCOP index for a temperature of 35 degrees Celsius is 5.39 and 3.98 for a temperature of 55 degrees Celsius. Such high COP and SCOP indices translate into high energy efficiency of the heat pump and contribute to reducing the building's demand for electrical energy.

 


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