We help the Černý Most Shopping Centre with the selection of heat pumps

The research team Renewable Energy Sources of the CTU UCEEB has prepared a technical study of the deployment of heat pumps for heating in the building of the Černý Most Shopping Centre, which will serve for further decision-making of the investor about environmentally friendly solutions.

As part of the study, a detailed analysis of the heat demand and hourly heat outputs calculated for the climatic conditions of a typical meteorological year for a given location was carried out. We used the hourly data to model realistic operation of high-temperature heat pumps with natural refrigerants with low global warming potential (GWP) in three conceptually different variants: a two-stage air-to-water heat pump (R744), a cascaded combination of air-to-water (R290) and water-to-water (R600a) heat pumps with an embedded water circuit, and a cascaded air-to-water heat pump with a refrigerant pair (R744/R290).

From the energy balance of the individual variants, we determined the required capacities to cover the heat demand of the Černý Most Shopping Centre and the capacities of the backup sources (electric boilers). On the basis of the required capacities, we have determined the rough investment costs for each variant. We also determined the electricity requirements for the operation of the heat pumps and, using the current electricity price data, we calculated the operating costs, including service and maintenance. The results of the study will be used by the investor to make further decisions on eco-saving measures.