Community Research and Development Information Service - CORDIS


A simplified technico-economic model has been proposed to assess the performance versus cost of solar systems coupled with long term storage and heat pumps. The system takes into account 26 independent variables (design parameters, weather data, cost factors) which are represented in the model by what could be defined as their first order influence. The model relies very much on the notation of equivalent or effective value of a parameter which in some cases should be obtained by an independent subroutine. With this approach, simple analytical expressions can be derived for the determination of the efficiencies of the various systems and subsystems which can then be used as guidelines for the sizing, performance and cost evaluation of the global system. From a certain number of numerical examples based on reasonable cost factors, some rather clear indications can be shown concerning both the charging and the discharging processes of solar energy from large stores. The heat pump represents a very flexible backup system which tends to attenuate the influence of those parameters to which a solar storage system may be sensitive such as the scale effect, temperature of utilization, minimum cycle temperature.

Additional information

Bibliographic Reference: EUR 8681 EN (1984) MF, 58 P., BFR 120, BLOW-UP COPY BFR 290, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123028900 / Last updated on: 1987-01-01
Available languages: en