Method and apparatus for increasing refrigerant inlet temperature and increasing cogeneration plant efficiency utilizing heat pump principles

摘要

Methods and apparatus for increasing the efficiency of a low or high temperature heating system. The device comprises a main heat dissipating unit (ie a cogeneration unit with a fuel cell (FC) or an internal combustion engine (ICE)) used for cogeneration and available waste / renewable energy from the surrounding environment (A) At least one secondary heat dissipation unit (i.e. a heat pump (HP)) utilizing at least one of the heat sources (HS), wherein the heat generated by the heat pump preheats the heat medium in the reflux line of the closed loop heating system Preferably, the main heat dissipating unit is used to heat the heat transfer medium to the required temperature level of the heat distribution network. The device according to the invention can comprise one or more heat pumps (HP) of the same or different type and one or more main heat dissipating units in series, in parallel or in cascaded connection loops. [Selected figure] Figure 1