Energy efficient buildings and combined thermal systems for electricity production, heating, refrigeration and air conditioning

Abstract

<jats:p>Thermal characteristics of energy efficient buildings are analyzed and energy demands are estimated. A concept of combined compressor – ejector thermal system for simultaneous production of electricity, heating, refrigeration and air conditioning is exposed. The performance characteristics of the natural gas prime motor – electric generator are assessed and optimum construction of the combined compressor – ejector refrigeration / heat pump unit is proposed to satisfy the energy demands for electricity, heating, cooling and air conditioning. Basic thermal calculations, material and energy balances of the complete thermal system are carried out and optimizing procedures for the thermal system components are given. A comparison of the proposed thermal systems and energy (natural gas) consumption with the conventional thermal systems and energy consumption for electricity, heating (natural gas - boiler), cooling (electricity – compressor refrigeration system) and air conditioning is made.</jats:p>