Programmable Thermostat (1 Heat – 1 Cool) [9700I]

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2 Responses to “Programmable Thermostat (1 Heat – 1 Cool) [9700I]”

1. guillranke paparamp says:

   2011/08/16 at 11:05 pm

   The COP or the coefficient of performance (measure of energy in over energy out) of a heat pump system is dependent on many factors. The best document to use to gain an understanding is the VDI guidelines 4640 which is a German standard but written in due language English. The basic factors which will affect a design will be the soil conditions, the flow temperature of the heating circuit and the heat pump. With a heat pump connected to standard radiators you would be better off using a gas boiler. A heat pump working with special underfloor heating with a flow temp of 35 degrees COP will be in the region of 4-5. If you regenerate the ground source with summer solar or cooling COP can be as high as 10.
2. isaad ger says:

   2011/10/03 at 8:55 am

   International auditors due in Athens, unions stage 24-hour strike