Increase of performance up to COP 10 with EnergyMachines™ optimal heat exchanger technology
EnergyMachines™ is a result of several years of development. The integrated energy system is based on the same technology as a heat exchanger. It efficiently extracts energy from the hot temperature liquid after the condenser to pre-heat domestic hot water. The result is high performance and a high energy exchange.
A heat pump and a cooling unit are basically the same kind of machine. The difference is that a heat pump extracts heat from a relatively low-temperature area (for example the ground or outdoor air), and pumping it into a higher temperature area. While a cooling unit extracts energy from a high temperature area and adds mechanical energy to lift the temperature level so that it can be transferred to, for example, outdoor air.
COP measures the performance of cooling units and heat pumps
The coefficient of performance (COP) is used to compare the performance of cooling units and heat pumps. COP describes the ratio between the transported thermal energy and the added mechanical energy. A heat pumps which lifts the thermal energy from 0° C to 60° C has a COP factor of 2,5. This means that the thermal energy is 2,5 times higher than the mechanical energy input. If the heat pump lifts the thermal energy from 0° C to 30° C, it has a COP factor of 5.
Heat exchangers that work in both directions provide a higher COP
Commercial real estate’s often have a simultaneous demand for heating and cooling. The cooling demand can be satisfied by producing water with 10° C and heat demand by producing water of 40° C. When both sides of a heat exchanger, hot side and cold side, are used at the same time, the amount of the thermal energy doubles in relation to the applied mechanical energy. This gives COP 10.
EnergyMachines™ utilise waste heat to increase the performance
EnergyMachines™ integrated energy system uses subcooling technology, which gives an increased performance for both the production of domestic hot water and when the heat demand reaches temperatures between 45 and 60° C. In comparison with conventional heat pumps, this is a performance increase of 30-50 per cent
Subcooling technology can be described as an elevator. A certain amount of energy is used for the elevator to go up to the sixth floor. Subcooling works as a generator, which utilise some of the energy consumed on the way up when the elevator goes back down.