REDUCTION OF CO2 EMISSIONS BY HEATING RESIDENTIAL BUILDINGS WITH LOW-COST HEAT PUMPS
The heating by a heat pump provides the chance for reduction of CO2 emissions at the heating of residential buildings. The minimizing of investment costs serves for a higher acceptance for this technique. An important point of view is the combination of a heat pump with reduced capacity with a cost-efficient additional heating as a mono-energetic system. There are two technical concepts of the low cost heat pump: Compact heat pump unit with a vertical earth probe with brine, reduced heating capacity and additional electrical heating. All the possible requirements can be realized by such a heat pump unit. If there is no demand for cooling in the summertime the vertical earth probe working as heat pipe combined with a compact heat pump with reduced heating capacity and additional electrical heating is the best solution. The brine pump is not needed and the heating pump takes over the heat transport from the heat pump which is installed nearby the earth probe to the heating system.